{"id":23585,"date":"2024-12-19T09:43:01","date_gmt":"2024-12-19T01:43:01","guid":{"rendered":"https:\/\/aif.amtbbs.org\/?p=23585"},"modified":"2024-12-19T09:43:01","modified_gmt":"2024-12-19T01:43:01","slug":"langchain-runnable%e6%9e%b6%e6%9e%84%e5%ae%9e%e6%88%98%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/aif.amtbbs.org\/index.php\/2024\/12\/19\/23585\/","title":{"rendered":"LangChain Runnable\u67b6\u6784\u5b9e\u6218\u89e3\u6790"},"content":{"rendered":"<div class=\"article-desc\">\u672c\u6587\u5c06\u5e26\u4f60\u6df1\u5165\u4e86\u89e3LangChain\u6846\u67b6\u80cc\u540e\u7684\u57fa\u7840\u67b6\u6784\u5e76\u63d0\u4f9b\u57fa\u672c\u5b9e\u6218\u4ee3\u7801\uff0c\u4ee5\u53ca\u5f00\u53d1\u590d\u6742\u7684\u57fa\u4e8eAI\u4ee3\u7406\u7cfb\u7edf\u65f6\u76f4\u63a5\u53ef\u7528\u7684\u901a\u7528\u4ee3\u7801\u3002<\/div>\n<div id=\"postspictures\" class=\"article-content\">\n<div id=\"container\" class=\"container am-engine\" data-v-1d7a5742=\"\" data-element=\"root\">\n<p>&nbsp;<\/p>\n<p>LangChain\u6846\u67b6\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u5b83\u5927\u5927\u52a0\u5feb\u4e86LLM\u5728\u9879\u76ee\u548c\u4ee3\u7406\u5f00\u53d1\u4e2d\u7684\u6709\u6548\u4f7f\u7528\u3002\u8be5\u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u7ea7\u62bd\u8c61\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u7acb\u5373\u5f00\u59cb\u4f7f\u7528\u6a21\u578b\u5e76\u5c06\u5176\u96c6\u6210\u5230\u4ed6\u4eec\u7684\u4ea7\u54c1\u4e2d\u3002\u4f46\u662f\u53e6\u4e00\u65b9\u9762\uff0c\u4e86\u89e3LangChain\u7684\u6838\u5fc3\u6982\u5ff5\uff08\u4f8b\u5982Runnable\u7684\u67b6\u6784\uff09\u5bf9\u4e8e\u6784\u5efaLLM\u4ee3\u7406\u548c\u94fe\u7684\u5f00\u53d1\u4eba\u5458\u975e\u5e38\u6709\u76ca\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7ed3\u6784\u5316\u7684\u65b9\u6cd5\u548c\u5bf9\u4f7f\u7528\u6846\u67b6\u7684\u6d1e\u5bdf\u529b\u3002<\/p>\n<p><img data-dominant-color=\"b9b9bb\" data-has-transparency=\"false\" style=\"--dominant-color: #b9b9bb;\" loading=\"lazy\" decoding=\"async\" class=\"not-transparent alignnone size-full wp-image-23587\" src=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/8a31e440-5d7d-4b2c-92e3-929cfbed344c-300x200-1.png\" width=\"300\" height=\"200\" alt=\"\" srcset=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/8a31e440-5d7d-4b2c-92e3-929cfbed344c-300x200-1.png 300w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/8a31e440-5d7d-4b2c-92e3-929cfbed344c-300x200-1-150x100.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<h3>LangChain\u67b6\u6784\u57fa\u7840<\/h3>\n<p>LangChain\u4e2d\u7684Runnable\u67b6\u6784\u57fa\u4e8e\u547d\u4ee4\u6a21\u5f0f\u7684\u539f\u7406\u6784\u5efa\uff0c\u547d\u4ee4\u6a21\u5f0f\u662f\u4e00\u79cd\u5c06\u8bf7\u6c42\u5c01\u88c5\u4e3a\u5bf9\u8c61\u7684\u884c\u4e3a\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8fd9\u79cd\u8bbe\u8ba1\u6709\u52a9\u4e8e\u53c2\u6570\u5316\u3001\u6392\u961f\u548c\u52a8\u6001\u6267\u884c\u547d\u4ee4\uff0c\u4f7fRunnable\u5bf9\u8c61\u5728\u5404\u79cd\u5de5\u4f5c\u6d41\u4e2d\u6a21\u5757\u5316\u3001\u53ef\u7ec4\u5408\u548c\u53ef\u7ba1\u7406\u3002<\/p>\n<p><img data-dominant-color=\"f7f7f7\" data-has-transparency=\"false\" style=\"--dominant-color: #f7f7f7;\" loading=\"lazy\" decoding=\"async\" class=\"not-transparent alignnone size-full wp-image-23588\" src=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/b683966b9a6a.png\" width=\"554\" height=\"143\" srcset=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/b683966b9a6a.png 554w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/b683966b9a6a-300x77.png 300w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/b683966b9a6a-150x39.png 150w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>Runnable\u5bf9\u8c61\u7279\u522b\u9002\u5408\u5de5\u4f5c\u6d41\u7ba1\u7406\u3001\u987a\u5e8f\u4efb\u52a1\u6267\u884c\u3001\u5904\u7406\u6761\u4ef6\u903b\u8f91\u4ee5\u53ca\u4e0e\u5916\u90e8\u7cfb\u7edf\u4ea4\u4e92\uff0c\u5b83\u4eec\u63d0\u4f9b\u7075\u6d3b\u6027\u3001\u53ef\u91cd\u7528\u6027\u548c\u6a21\u5757\u5316\u3002\u4f60\u53ef\u4ee5\u52a8\u6001\u5730\u5c06\u4efb\u52a1\u94fe\u63a5\u5728\u4e00\u8d77\u4ee5\u521b\u5efa\u590d\u6742\u7684\u884c\u4e3a\u573a\u666f\uff0c\u540c\u65f6\u4fdd\u6301\u5e72\u51c0\u4e14\u6613\u4e8e\u7ba1\u7406\u7684\u4ee3\u7801\u7ed3\u6784\u3002<\/p>\n<p><img data-dominant-color=\"f4f4f4\" data-has-transparency=\"true\" style=\"--dominant-color: #f4f4f4;\" loading=\"lazy\" decoding=\"async\" class=\"has-transparency alignnone size-full wp-image-23589\" src=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/97f3854ee317.png\" width=\"553\" height=\"160\" alt=\"Runnable\u94fe\u7684\u53ef\u80fd\u914d\u7f6e\u4e4b\u4e00\" srcset=\"https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/97f3854ee317.png 553w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/97f3854ee317-300x87.png 300w, https:\/\/aiforumimage.oss-cn-shanghai.aliyuncs.com\/wp-content\/uploads\/2024\/12\/97f3854ee317-150x43.png 150w\" sizes=\"auto, (max-width: 553px) 100vw, 553px\" \/><span class=\"data-image-title\">Runnable\u94fe\u7684\u53ef\u80fd\u914d\u7f6e\u4e4b\u4e00<\/span><\/p>\n<p>LangChain\u4e2d\u6267\u884c\u7279\u5b9a\u4efb\u52a1\u7684\u5927\u591a\u6570\u9ad8\u7ea7\u5bf9\u8c61\u90fd\u5b9e\u73b0\u4e86Runnable\u7c7b\u3002\u4f60\u8ba1\u5212\u5305\u542b\u5728\u94fe\u4e2d\u7684\u4efb\u4f55\u5bf9\u8c61\u4e5f\u5fc5\u987b\u4ee5\u67d0\u79cd\u65b9\u5f0f\u5b9e\u73b0Runnable\u7c7b\u3002\u6709\u8da3\u7684\u662f\uff0cRunnable\u5145\u5f53\u547d\u4ee4\u7684\u62bd\u8c61\u6216\u4e00\u4e2a\u5177\u4f53\u547d\u4ee4\uff0c\u540c\u65f6\u4e5f\u5145\u5f53\u4e86\u4e00\u4e2a\u8c03\u7528\u8005\u548c\u63a5\u6536\u8005\u89d2\u8272\u3002<\/p>\n<p>\u4e00\u4e2a\u503c\u5f97\u6ce8\u610f\u7684\u4f8b\u5b50\u662f\u6b64\u7c7b\u4e2d\u63d0\u4f9b\u7684\u7ba1\u9053\u65b9\u6cd5\uff0c\u5b83\u4e13\u95e8\u7528\u4e8e\u521b\u5efa\u94fe\u3002\u6b64\u65b9\u6cd5\u5141\u8bb8\u65e0\u7f1d\u7ec4\u5408\u591a\u4e2aRunnable\uff0c\u4f7f\u5176\u6210\u4e3a\u5728LangChain\u4e2d\u6784\u5efa\u548c\u6267\u884c\u5de5\u4f5c\u6d41\u7684\u57fa\u77f3\u3002<\/p>\n<p>\u5728\u4e0a\u56fe\u4e2d\uff0c\u4f60\u53ef\u4ee5\u770b\u5230Runnable\u5982\u4f55\u4e0e\u5176\u5404\u79cd\u5b9e\u73b0\u4e00\u8d77\u8fd0\u884c\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u5728\u672c\u6587\u4e2d\u8be6\u7ec6\u7814\u7a76\u8fd9\u4e9b\u5b9e\u73b0\u3002<\/p>\n<h3>\u521b\u5efaRunnable<\/h3>\n<p>\u5b9e\u9645\u4e0a\uff0c\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u521b\u5efaRunnable\uff1a\u901a\u8fc7RunnableLambda\u6216\u6269\u5c55\u57faRunnable\u7c7b\u3002<\/p>\n<h4>\u5c06RunnableLambda\u7528\u4e8e\u7b80\u5355\u51fd\u6570<\/h4>\n<p>\u521b\u5efaRunnable\u7684\u6700\u7b80\u5355\u65b9\u6cd5\u662f\u4f7f\u7528RunnableLambda\u3002\u6b64\u7c7b\u5141\u8bb8\u4f60\u5c06\u4efb\u4f55\u51fd\u6570\u5305\u88c5\u4e3aRunnable\uff0c\u4ece\u800c\u5141\u8bb8\u52a8\u6001\u884c\u4e3a\u800c\u65e0\u9700\u81ea\u5b9a\u4e49\u7c7b\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_0\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5b9a\u4e49\u4e00\u4e2a\u7b80\u5355\u51fd\u6570<\/span>\r\n<span class=\"token keyword\">const<\/span> toUpperCase <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token parameter\">string<\/span> <span class=\"token operator\">=&gt;<\/span> text<span class=\"token punctuation\">.<\/span><span class=\"token function\">toUpperCase<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5c06\u51fd\u6570\u5305\u88c5\u4e3aRunnable<\/span>\r\n<span class=\"token keyword\">const<\/span> upperCaseRunnable <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>toUpperCase<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u8c03\u7528Runnable<\/span>\r\n<span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> upperCaseRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"hello world\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/\u8f93\u51fa\uff1a \"HELLO WORLD\"<\/span><\/code><\/pre>\n<ul id=\"code_id_0\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3>\u6269\u5c55Runnable\u57fa\u7c7b<\/h3>\n<p>\u5bf9\u4e8e\u66f4\u9ad8\u7ea7\u7684\u4f7f\u7528\u573a\u666f\uff0c\u4f60\u53ef\u4ee5\u6269\u5c55Runnable\u57fa\u7c7b\u3002\u6b64\u65b9\u6cd5\u53ef\u5b8c\u5168\u63a7\u5236\u6267\u884c\u751f\u547d\u5468\u671f\uff0c\u5305\u62ec\u8c03\u7528\u3001\u6279\u5904\u7406\u548c\u6d41\u7b49\u65b9\u6cd5\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_1\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> Runnable <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">GreetUserRunnable<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">Runnable<\/span><span class=\"token operator\">&lt;<\/span>string<span class=\"token punctuation\">,<\/span> string<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n lc_namespace <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"GreetUser\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n <span class=\"token function\">onStart<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">input<\/span><span class=\"token operator\">:<\/span> string <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Starting with input: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token punctuation\">.<\/span>input<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n\r\n <span class=\"token function\">onEnd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">result<\/span><span class=\"token operator\">:<\/span> string <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Finished with result: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token punctuation\">.<\/span>result<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n\r\n <span class=\"token function\">onError<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">error<\/span><span class=\"token operator\">:<\/span> unknown<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Error occurred: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token punctuation\">(<\/span>error <span class=\"token keyword\">as<\/span> Error<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>message<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n <span class=\"token comment\">\/\/\u81ea\u5b9a\u4e49\u6267\u884c\u903b\u8f91<\/span>\r\n <span class=\"token keyword\">async<\/span> <span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">onStart<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">input<\/span><span class=\"token operator\">:<\/span> name <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> greeting <span class=\"token operator\">=<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Hello, <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>name<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">!<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">onEnd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">result<\/span><span class=\"token operator\">:<\/span> greeting <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">return<\/span> greeting<span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>error<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">onError<\/span><span class=\"token punctuation\">(<\/span>error<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">throw<\/span> error<span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<ul id=\"code_id_1\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<li>22.<\/li>\n<li>23.<\/li>\n<li>24.<\/li>\n<li>25.<\/li>\n<li>26.<\/li>\n<li>27.<\/li>\n<li>28.<\/li>\n<li>29.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3>\u4f7f\u7528Runnable\u6784\u5efa\u5de5\u4f5c\u6d41<\/h3>\n<p>LangChain\u4e2d\u7684Runnable\u67b6\u6784\u901a\u8fc7\u6309\u529f\u80fd\u5206\u7ec4\u7684\u4e13\u7528Runnable\u8fdb\u884c\u4e86\u6269\u5c55\uff0c\u4f7f\u5176\u7528\u9014\u5e7f\u6cdb\u4e14\u9002\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<h4>\u8def\u7531\u548c\u5206\u652f\u7c7b\u578b<\/h4>\n<p>\u6839\u636e\u6761\u4ef6\u6216\u8f93\u5165\u7ba1\u7406\u6267\u884c\u6d41\u7a0b\u7684Runnable\u6709\uff1a<\/p>\n<h4>RouterRunnable<\/h4>\n<p>\u6839\u636e\u7ed9\u5b9a\u7684\u952e\u503c\u5c06\u8f93\u5165\u5b9a\u5411\u5230\u7279\u5b9a\u7684Runnable\uff0c\u7c7b\u4f3c\u4e8eswitch-case\u8bed\u53e5\u3002\u9002\u7528\u4e8e\u57fa\u4e8e\u8fd0\u884c\u65f6\u53c2\u6570\u7684\u52a8\u6001\u4efb\u52a1\u6267\u884c\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_2\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RouterRunnable<span class=\"token punctuation\">,<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> router <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RouterRunnable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">runnables<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">billing<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">query<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Billing Department: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>query<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">technical<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">query<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Technical Support: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>query<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">general<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">query<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">General Inquiry: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>query<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u8def\u7531\u4e00\u4e2a\u8d26\u5355\u95ee\u9898<\/span>\r\n<span class=\"token keyword\">const<\/span> result1 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> router<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">key<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"billing\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">input<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"I have a question about my invoice.\"<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa: \"Billing Department: I have a question about my invoice.\"<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u8def\u7531\u4e00\u4e2a\u6280\u672f\u95ee\u9898<\/span>\r\n<span class=\"token keyword\">const<\/span> result2 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> router<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">key<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"technical\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">input<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"My internet is not working.\"<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa: \"Technical Support: My internet is not working.\"<\/span><\/code><\/pre>\n<ul id=\"code_id_2\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableBranch<\/h4>\n<p>\u6839\u636e\u6761\u4ef6\u68c0\u67e5\u4ece\u591a\u4e2a\u9009\u9879\u4e2d\u6267\u884c\u7279\u5b9a\u7684Runnable\uff0c\u4f7f\u5de5\u4f5c\u6d41\u80fd\u591f\u9002\u5e94\u4e0d\u540c\u7684\u8f93\u5165\u573a\u666f\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_3\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">const<\/span> branch <span class=\"token operator\">=<\/span> RunnableBranch<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n <span class=\"token punctuation\">[<\/span>\r\n <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">user<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">age<\/span><span class=\"token operator\">:<\/span> number <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> user<span class=\"token punctuation\">.<\/span>age <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Hey <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>user<span class=\"token punctuation\">.<\/span>name<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">, check out our new teen collection!<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">[<\/span>\r\n <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">user<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">age<\/span><span class=\"token operator\">:<\/span> number <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> user<span class=\"token punctuation\">.<\/span>age <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">18<\/span> <span class=\"token operator\">&amp;&amp;<\/span> user<span class=\"token punctuation\">.<\/span>age <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Hi <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>user<span class=\"token punctuation\">.<\/span>name<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">, explore our trendy outfits for young adults!<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Hello <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>user<span class=\"token punctuation\">.<\/span>name<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">, discover our premium range!<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> branch<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"Alice\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">age<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">25<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa: \"Hi Alice, explore our trendy outfits for young adults!\"<\/span><\/code><\/pre>\n<ul id=\"code_id_3\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>\u6570\u636e\u64cd\u4f5c\u548c\u5206\u914d\u7c7b\u578b<\/h4>\n<p>\u8f6c\u6362\u6216\u51c6\u5907\u6570\u636e\u4ee5\u7528\u4e8e\u540e\u7eed\u4efb\u52a1\u7684Runnable\u6709\uff1a<\/p>\n<h4>RunnableAssign<\/h4>\n<p>\u901a\u8fc7\u6dfb\u52a0\u65b0\u5b57\u6bb5\u6216\u66f4\u65b0\u73b0\u6709\u5b57\u6bb5\u6765\u589e\u5f3a\u6216\u4fee\u6539\u8f93\u5165\u6570\u636e\uff0c\u4e3a\u540e\u7eed\u5904\u7406\u6b65\u9aa4\u505a\u597d\u51c6\u5907\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_4\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableAssign<span class=\"token punctuation\">,<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> getGeolocation <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">x<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">ip<\/span><span class=\"token operator\">:<\/span> string <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6a21\u62df\u4e00\u4e2aAPI\u8c03\u7528\u6765\u83b7\u53d6\u5730\u7406\u5b9a\u4f4d<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">location<\/span><span class=\"token operator\">:<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Location for IP <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>x<span class=\"token punctuation\">.<\/span>ip<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> runnableAssign <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RunnableAssign<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> getGeolocation <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> runnableAssign<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"John Doe\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">ip<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"192.168.1.1\"<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: { name: \"John Doe\", ip: \"192.168.1.1\", getGeolocation: { location: \"Location for IP 192.168.1.1\" } }<\/span><\/code><\/pre>\n<ul id=\"code_id_4\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnablePick<\/h4>\n<p>\u4ece\u8f93\u5165\u6570\u636e\u4e2d\u9009\u62e9\u5e76\u63d0\u53d6\u7279\u5b9a\u5b57\u6bb5\uff0c\u4ece\u800c\u53ef\u4ee5\u5bf9\u76f8\u5173\u4fe1\u606f\u8fdb\u884c\u91cd\u70b9\u5904\u7406\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_5\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnablePick <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> orderData <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">orderId<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"12345\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">customerEmail<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"customer@example.com\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">items<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">productId<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"A1\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">quantity<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">2<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">totalAmount<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">99.99<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">shippingAddress<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"123 Main St\"<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> receiptInfoRunnable <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RunnablePick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">\"orderId\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"customerEmail\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"totalAmount\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> receiptInfoRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>orderData<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: { orderId: '12345', customerEmail: 'customer@example.com', totalAmount: 99.99 }<\/span><\/code><\/pre>\n<ul id=\"code_id_5\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnablePassthrough<\/h4>\n<p>\u4e0d\u505a\u4efb\u4f55\u66f4\u6539\u5730\u4f20\u9012\u8f93\u5165\u6570\u636e\uff0c\u8fd9\u5bf9\u4e8e\u7ef4\u62a4\u5de5\u4f5c\u6d41\u4e2d\u7684\u6570\u636e\u5b8c\u6574\u6027\u975e\u5e38\u6709\u7528\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_6\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">const<\/span> chain <span class=\"token operator\">=<\/span> RunnableSequence<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">question<\/span><span class=\"token operator\">:<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RunnablePassthrough<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token function-variable function\">context<\/span><span class=\"token operator\">:<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token function\">loadContextFromStore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\r\n prompt<span class=\"token punctuation\">,<\/span>\r\n llm<span class=\"token punctuation\">,<\/span>\r\n outputParser<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">const<\/span> response <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> chain<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>\r\n <span class=\"token string\">\"I can pass a single string instead of an object since I'm using `RunnablePassthrough`.\"<\/span>\r\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<ul id=\"code_id_6\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableMap<\/h4>\n<p>\u5c06\u8f6c\u6362\u5e94\u7528\u4e8e\u6620\u5c04\u5bf9\u8c61\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bb5\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u952e\u503c\u5bf9\u7684\u5355\u72ec\u5904\u7406\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_7\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">const<\/span> sensorDataRunnable <span class=\"token operator\">=<\/span> RunnableMap<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">temperature<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">temp<\/span><span class=\"token operator\">:<\/span> number <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Temperature is <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token punctuation\">.<\/span>temp<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">\u00b0C<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">humidity<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">humidity<\/span><span class=\"token operator\">:<\/span> number <span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Humidity is <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token punctuation\">.<\/span>humidity<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">%<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> sensorDataRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">temp<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">22<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">humidity<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">45<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: { temperature: 'Temperature is 22\u00b0C', humidity: 'Humidity is 45%' }<\/span><\/code><\/pre>\n<ul id=\"code_id_7\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>\u5e8f\u5217\u548c\u5de5\u4f5c\u6d41\u7ec4\u5408\u7c7b\u578b<\/h4>\n<p>\u53ef\u6309\u987a\u5e8f\u6784\u9020\u548c\u6267\u884c\u4efb\u52a1\u7684Runnable\uff0c\u652f\u6301\u521b\u5efa\u590d\u6742\u7684\u5de5\u4f5c\u6d41\uff1a<\/p>\n<h4>RunnableSequence<\/h4>\n<p>\u4ee5\u7ebf\u6027\u65b9\u5f0f\u94fe\u63a5\u591a\u4e2aRunnable\uff0c\u5176\u4e2d\u4e00\u4e2aRunnable\u7684\u8f93\u51fa\u6210\u4e3a\u4e0b\u4e00\u4e2aRunnable\u7684\u8f93\u5165\uff0c\u5f62\u6210\u9010\u6b65\u5904\u7406\u7684\u7ba1\u9053\u7ed3\u6784\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_8\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">const<\/span> imageProcessingChain <span class=\"token operator\">=<\/span> RunnableSequence<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n readImageRunnable<span class=\"token punctuation\">,<\/span>\r\n resizeImageRunnable<span class=\"token punctuation\">,<\/span>\r\n applyFilterRunnable<span class=\"token punctuation\">,<\/span>\r\n saveImageRunnable<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> imageProcessingChain<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'path\/to\/input\/image.jpg'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<ul id=\"code_id_8\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableEach<\/h4>\n<p>\u5c06Runnable\u5e94\u7528\u4e8e\u96c6\u5408\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u7c7b\u4f3c\u4e8e\u6570\u7ec4\u4e0a\u7684\u6620\u5c04\u51fd\u6570\uff0c\u5141\u8bb8\u6279\u5904\u7406\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_9\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableEach<span class=\"token punctuation\">,<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> personalizeEmail <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Dear <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>name<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">, we have an offer for you!<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">const<\/span> sendEmail <span class=\"token operator\">=<\/span> emailSendingRunnable<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5047\u8bbe\u8fd9\u662f\u5728\u5176\u4ed6\u5730\u65b9\u5b9a\u4e49\u7684<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> emailChain <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RunnableEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">bound<\/span><span class=\"token operator\">:<\/span> personalizeEmail<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipe<\/span><span class=\"token punctuation\">(<\/span>sendEmail<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> emailChain<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Alice\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Bob\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Carol\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5c06\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u5230\uff1aAlice, Bob, and Carol.<\/span><\/code><\/pre>\n<ul id=\"code_id_9\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableParallel<\/h4>\n<p>\u5728\u540c\u4e00\u8f93\u5165\u4e0a\u540c\u65f6\u6267\u884c\u591a\u4e2aRunnable\uff0c\u4ece\u800c\u5b9e\u73b0\u5e76\u53d1\u5904\u7406\u4ee5\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_10\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableLambda<span class=\"token punctuation\">,<\/span> RunnableParallel <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> calculateMean <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">.<\/span><span class=\"token function\">reduce<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">a<span class=\"token punctuation\">,<\/span> b<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> a <span class=\"token operator\">+<\/span> b<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> data<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> calculateMedian <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> sorted <span class=\"token operator\">=<\/span> data<span class=\"token punctuation\">.<\/span><span class=\"token function\">slice<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">a<span class=\"token punctuation\">,<\/span> b<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> a <span class=\"token operator\">-<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">const<\/span> mid <span class=\"token operator\">=<\/span> Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">floor<\/span><span class=\"token punctuation\">(<\/span>sorted<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">return<\/span> sorted<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">%<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">!==<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">?<\/span> sorted<span class=\"token punctuation\">[<\/span>mid<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">:<\/span> <span class=\"token punctuation\">(<\/span>sorted<span class=\"token punctuation\">[<\/span>mid <span class=\"token operator\">-<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">+<\/span> sorted<span class=\"token punctuation\">[<\/span>mid<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> calculateMode <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> <span class=\"token literal-property property\">frequency<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">[<\/span>key<span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">]<\/span><span class=\"token operator\">:<\/span> number <span class=\"token punctuation\">}<\/span> <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">let<\/span> maxFreq <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">let<\/span> <span class=\"token literal-property property\">modes<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n data<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n frequency<span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span>frequency<span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">||<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">+<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>frequency<span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&gt;<\/span> maxFreq<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n maxFreq <span class=\"token operator\">=<\/span> frequency<span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n modes <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>frequency<span class=\"token punctuation\">[<\/span>item<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">===<\/span> maxFreq<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n modes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">return<\/span> modes<span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> analysisChain <span class=\"token operator\">=<\/span> RunnableParallel<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">mean<\/span><span class=\"token operator\">:<\/span> calculateMean<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">median<\/span><span class=\"token operator\">:<\/span> calculateMedian<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">mode<\/span><span class=\"token operator\">:<\/span> calculateMode<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> analysisChain<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: { mean: 2.4, median: 2, mode: [2] }<\/span><\/code><\/pre>\n<ul id=\"code_id_10\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<li>22.<\/li>\n<li>23.<\/li>\n<li>24.<\/li>\n<li>25.<\/li>\n<li>26.<\/li>\n<li>27.<\/li>\n<li>28.<\/li>\n<li>29.<\/li>\n<li>30.<\/li>\n<li>31.<\/li>\n<li>32.<\/li>\n<li>33.<\/li>\n<li>34.<\/li>\n<li>35.<\/li>\n<li>36.<\/li>\n<li>37.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>\u9519\u8bef\u5904\u7406\u3001\u5f39\u6027\u548c\u914d\u7f6e\u7c7b\u578b<\/h4>\n<p>\u901a\u8fc7\u91cd\u8bd5\u673a\u5236\u548c\u56de\u9000\u9009\u9879\u589e\u5f3a\u7a33\u5065\u6027\u7684Runnable\u6709\uff1a<\/p>\n<h4>RunnableBinding<\/h4>\n<p>\u901a\u8fc7\u9884\u8bbe\u67d0\u4e9b\u53c2\u6570\u6216\u914d\u7f6e\u521b\u5efa\u81ea\u5b9a\u4e49Runnable\uff0c\u5141\u8bb8\u9488\u5bf9\u7279\u5b9a\u4e0a\u4e0b\u6587\u5b9a\u5236\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7ec4\u4ef6\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_11\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableConfig<span class=\"token punctuation\">,<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> <span class=\"token function-variable function\">queryDatabase<\/span> <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">query<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">,<\/span> config<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> RunnableConfig<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> dbConfig <span class=\"token operator\">=<\/span> config<span class=\"token operator\">?.<\/span>configurable<span class=\"token operator\">?.<\/span>dbConfig<span class=\"token punctuation\">;<\/span>\r\n <span class=\"token comment\">\/\/\u4f7f\u7528dbConfig\u5efa\u7acb\u8fde\u63a5\u5e76\u6267\u884c\u67e5\u8be2<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Executed query on <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>dbConfig<span class=\"token punctuation\">.<\/span>host<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>query<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> runnable <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>queryDatabase<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u7ed1\u5b9a\u7528\u5728\u4e0d\u540c\u73af\u5883\u4e2d\u7684\u914d\u7f6e<\/span>\r\n<span class=\"token keyword\">const<\/span> prodRunnable <span class=\"token operator\">=<\/span> <span class=\"token function\">runnable<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">configurable<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">dbConfig<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">host<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">'prod.db.example.com'<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">const<\/span> testRunnable <span class=\"token operator\">=<\/span> <span class=\"token function\">runnable<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">configurable<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">dbConfig<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">host<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">'test.db.example.com'<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result1 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> prodRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"SELECT * FROM users;\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: \"Executed query on prod.db.example.com: SELECT * FROM users;\"<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> result2 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> testRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"SELECT * FROM users;\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: \"Executed query on test.db.example.com: SELECT * FROM users;\"<\/span><\/code><\/pre>\n<ul id=\"code_id_11\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableRetry<\/h4>\n<p>\u6839\u636e\u6307\u5b9a\u7684\u91cd\u8bd5\u7b56\u7565\u5728\u5931\u8d25\u65f6\u81ea\u52a8\u91cd\u8bd5Runnable\uff0c\u589e\u5f3a\u5bf9\u77ac\u6001\u9519\u8bef\u7684\u6062\u590d\u80fd\u529b\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_12\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableLambda <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> fetchWeatherData <span class=\"token operator\">=<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>location<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6a21\u62df\u4e00\u4e2a\u53ef\u80fd\u4f1a\u5931\u8d25\u7684API\u8c03\u7528<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">random<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0.7<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Network error\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Weather data for <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>location<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> fetchWeatherLambda <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>fetchWeatherData<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5e94\u7528\u91cd\u8bd5\u903b\u8f91<\/span>\r\n<span class=\"token keyword\">const<\/span> fetchWeatherWithRetry <span class=\"token operator\">=<\/span> fetchWeatherLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">withRetry<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">stopAfterAttempt<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">5<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> fetchWeatherWithRetry<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"New York\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>res<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>error<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Failed to fetch weather data after retries:\"<\/span><span class=\"token punctuation\">,<\/span> error<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<ul id=\"code_id_12\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4>RunnableWithFallbacks<\/h4>\n<p>\u5982\u679c\u4e3bRunnable\u5931\u8d25\uff0c\u5219\u63d0\u4f9b\u8981\u6267\u884c\u7684\u66ff\u4ee3Runnable\uff0c\u4ee5\u786e\u4fdd\u5de5\u4f5c\u6d41\u7a0b\u53ef\u4ee5\u7ee7\u7eed\u6216\u6b63\u5e38\u964d\u7ea7\u3002<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_13\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> RunnableLambda<span class=\"token punctuation\">,<\/span> RunnableWithFallbacks <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> primaryDataSource <span class=\"token operator\">=<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>id<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6a21\u62df\u5931\u8d25\u6545\u969c<\/span>\r\n <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Primary data source is unavailable\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> secondaryDataSource <span class=\"token operator\">=<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>id<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Data for <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>id<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> from secondary source<\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> primaryRunnable <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>primaryDataSource<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">const<\/span> fallbackRunnable <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>secondaryDataSource<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5e26\u56de\u9000\u7684\u8bbe\u7f6e<\/span>\r\n<span class=\"token keyword\">const<\/span> dataRunnable <span class=\"token operator\">=<\/span> primaryRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">withFallbacks<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>fallbackRunnable<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> res <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> dataRunnable<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"item123\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c: \"Data for item123 from secondary source\"<\/span><\/code><\/pre>\n<ul id=\"code_id_13\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3>\u6574\u5408<\/h3>\n<p>\u5728\u524d\u9762\u7684\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u63a2\u8ba8\u4e86\u5355\u4e2aRunnable\u53ca\u5176\u5728\u6784\u5efa\u6a21\u5757\u5316\u5de5\u4f5c\u6d41\u4e2d\u7684\u4f5c\u7528\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u5982\u4f55\u7ec4\u5408\u8fd9\u4e9bRunnable\u6765\u521b\u5efa\u5168\u9762\u7684\u5b9e\u9645\u5e94\u7528\u7a0b\u5e8f\u3002\u4ee5\u4e0b\u4e09\u4e2a\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u96c6\u6210\u591a\u4e2aRunnable\u6765\u89e3\u51b3\u590d\u6742\u95ee\u9898\u3002<\/p>\n<h4>\u793a\u4f8b1\uff1a\u667a\u80fd\u6587\u6863\u5904\u7406\u7ba1\u9053<\/h4>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u5047\u5b9a\u6709\u4e00\u5bb6\u516c\u53f8\u5e0c\u671b\u81ea\u52a8\u5904\u7406\u53d1\u7968\u3001\u6536\u636e\u548c\u5408\u540c\u7b49\u4f20\u5165\u6587\u6863\u3002\u5f00\u53d1\u7684\u8f6f\u4ef6\u7cfb\u7edf\u76ee\u6807\u662f\u5bf9\u6587\u6863\u7c7b\u578b\u8fdb\u884c\u5206\u7c7b\u3001\u63d0\u53d6\u76f8\u5173\u6570\u636e\u3001\u9a8c\u8bc1\u6570\u636e\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5e76\u4e14\u80fd\u591f\u59a5\u5584\u5904\u7406\u9519\u8bef\uff0c\u5e76\u5728\u53d1\u751f\u77ac\u65f6\u6545\u969c\u65f6\u91cd\u8bd5\u64cd\u4f5c\u3002<\/p>\n<p>\u4f7f\u7528\u7684Runnable\u6709RunnableSequence\u3001RouterRunnable\u3001RunnableParallel\u3001RunnableRetry\u3001RunnableWithFallbacks\u3001RunnableAssign\u3001RunnableLambda\u7b49\uff0c\u5173\u952e\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_14\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span>\r\n RunnableSequence<span class=\"token punctuation\">,<\/span>\r\n RouterRunnable<span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u5b9a\u4e49\u4e00\u4e2a\u7edf\u4e00\u7684\u8f93\u51fa\u7c7b\u578b<\/span>\r\ntype UnifiedOutput <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">type<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">;<\/span>\r\n amount<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">;<\/span>\r\n dueDate<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">;<\/span>\r\n client<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">;<\/span>\r\n parties<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n term<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">;<\/span>\r\n total<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> number<span class=\"token punctuation\">;<\/span>\r\n items<span class=\"token operator\">?<\/span><span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa41\uff1aOCR\u5904\u7406\uff08\u7528\u51fd\u6570\u6a21\u62df\uff09<\/span>\r\n<span class=\"token keyword\">const<\/span> ocrRunnable <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">imageBuffer<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6a21\u62dfOCR\u5904\u7406<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token string\">\"Extracted text: Invoice for Acme Corp\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa42\uff1a\u6587\u4ef6\u5206\u7c7b<\/span>\r\n<span class=\"token keyword\">const<\/span> classifyDocument <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">text<\/span><span class=\"token operator\">:<\/span> string<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6a21\u62df\u6587\u4ef6\u5206\u7c7b<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Invoice\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string\">\"invoice\"<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Contract\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token string\">\"contract\"<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token string\">\"receipt\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa43\uff1a\u6bcf\u79cd\u6587\u6863\u7c7b\u578b\u7684\u6570\u636e\u63d0\u53d6Runnables<\/span>\r\n<span class=\"token keyword\">const<\/span> extractInvoiceData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>\r\n <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>UnifiedOutput<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u63d0\u53d6\u7279\u5b9a\u4e8e\u53d1\u7968\u7684\u6570\u636e<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">type<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"invoice\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">amount<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">dueDate<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"2024-12-31\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">client<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"Acme Corp\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> extractContractData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>\r\n <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>UnifiedOutput<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u63d0\u53d6\u7279\u5b9a\u4e8e\u5408\u540c\u7684\u6570\u636e<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">type<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"contract\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">parties<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Company A\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Company B\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">term<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"2 years\"<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> extractReceiptData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span>\r\n <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>text<span class=\"token operator\">:<\/span> string<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> Promise<span class=\"token operator\">&lt;<\/span>UnifiedOutput<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u63d0\u53d6\u7279\u5b9a\u4e8e\u6536\u636e\u7684\u6570\u636e<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">type<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">\"receipt\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">total<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">50<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">items<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Item1\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Item2\"<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> dataExtractionRouter <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RouterRunnable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">runnables<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">invoice<\/span><span class=\"token operator\">:<\/span> extractInvoiceData<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">contract<\/span><span class=\"token operator\">:<\/span> extractContractData<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">receipt<\/span><span class=\"token operator\">:<\/span> extractReceiptData<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa45\uff1a\u6570\u636e\u9a8c\u8bc1<\/span>\r\n<span class=\"token keyword\">const<\/span> validateData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> UnifiedOutput<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u6267\u884c\u9a8c\u8bc1\u903b\u8f91<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>data <span class=\"token operator\">||<\/span> <span class=\"token operator\">!<\/span>data<span class=\"token punctuation\">.<\/span>type<span class=\"token punctuation\">)<\/span>\r\n <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Validation failed: Data is missing or invalid\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">...<\/span>data<span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">isValid<\/span><span class=\"token operator\">:<\/span> <span class=\"token boolean\">true<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa46\uff1a\u4fdd\u5b58\u5230\u6570\u636e\u5e93\uff08\u4f7f\u7528\u4e00\u4e2a\u51fd\u6570\u8fdb\u884c\u6a21\u62df\uff09<\/span>\r\n<span class=\"token keyword\">const<\/span> saveToDatabase <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> UnifiedOutput<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u6a21\u62df\u4fdd\u5b58\u5230\u6570\u636e\u5e93<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Data saved: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stringify<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa47\uff1a\u6784\u5efa\u5de5\u4f5c\u6d41\u5e8f\u5217<\/span>\r\n<span class=\"token keyword\">const<\/span> documentProcessingWorkflow <span class=\"token operator\">=<\/span> RunnableSequence<span class=\"token punctuation\">.<\/span>from<span class=\"token operator\">&lt;<\/span>string<span class=\"token punctuation\">,<\/span> any<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n ocrRunnable<span class=\"token punctuation\">,<\/span>\r\n classifyDocument<span class=\"token punctuation\">,<\/span>\r\n dataExtractionRouter<span class=\"token punctuation\">,<\/span>\r\n validateData<span class=\"token punctuation\">,<\/span>\r\n saveToDatabase<span class=\"token punctuation\">.<\/span><span class=\"token function\">withRetry<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">stopAfterAttempt<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa48\uff1a\u6dfb\u52a0\u5e26\u6709\u56de\u9000\u652f\u6301\u7684\u9519\u8bef\u5904\u7406<\/span>\r\n<span class=\"token keyword\">const<\/span> workflowWithFallback <span class=\"token operator\">=<\/span> documentProcessingWorkflow<span class=\"token punctuation\">.<\/span><span class=\"token function\">withFallbacks<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">fallbacks<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span>\r\n RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token string\">\"An error occurred. Please try again later.\"<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6267\u884c\u5de5\u4f5c\u6d41<\/span>\r\n<span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">=<\/span> <span class=\"token keyword\">await<\/span> workflowWithFallback<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Document image bytes\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>result<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token comment\">\/\/\u671f\u671b\u7684\u8f93\u51fa\u7ed3\u679c: \"Data saved: { type: 'invoice', amount: 1000, dueDate: '2024-12-31', client: 'Acme Corp', isValid: true }\"<\/span>\r\n <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>error<span class=\"token operator\">:<\/span> any<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Failed to process document:\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span>error <span class=\"token keyword\">as<\/span> Error<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<ul id=\"code_id_14\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<li>22.<\/li>\n<li>23.<\/li>\n<li>24.<\/li>\n<li>25.<\/li>\n<li>26.<\/li>\n<li>27.<\/li>\n<li>28.<\/li>\n<li>29.<\/li>\n<li>30.<\/li>\n<li>31.<\/li>\n<li>32.<\/li>\n<li>33.<\/li>\n<li>34.<\/li>\n<li>35.<\/li>\n<li>36.<\/li>\n<li>37.<\/li>\n<li>38.<\/li>\n<li>39.<\/li>\n<li>40.<\/li>\n<li>41.<\/li>\n<li>42.<\/li>\n<li>43.<\/li>\n<li>44.<\/li>\n<li>45.<\/li>\n<li>46.<\/li>\n<li>47.<\/li>\n<li>48.<\/li>\n<li>49.<\/li>\n<li>50.<\/li>\n<li>51.<\/li>\n<li>52.<\/li>\n<li>53.<\/li>\n<li>54.<\/li>\n<li>55.<\/li>\n<li>56.<\/li>\n<li>57.<\/li>\n<li>58.<\/li>\n<li>59.<\/li>\n<li>60.<\/li>\n<li>61.<\/li>\n<li>62.<\/li>\n<li>63.<\/li>\n<li>64.<\/li>\n<li>65.<\/li>\n<li>66.<\/li>\n<li>67.<\/li>\n<li>68.<\/li>\n<li>69.<\/li>\n<li>70.<\/li>\n<li>71.<\/li>\n<li>72.<\/li>\n<li>73.<\/li>\n<li>74.<\/li>\n<li>75.<\/li>\n<li>76.<\/li>\n<li>77.<\/li>\n<li>78.<\/li>\n<li>79.<\/li>\n<li>80.<\/li>\n<li>81.<\/li>\n<li>82.<\/li>\n<li>83.<\/li>\n<li>84.<\/li>\n<li>85.<\/li>\n<li>86.<\/li>\n<li>87.<\/li>\n<li>88.<\/li>\n<li>89.<\/li>\n<li>90.<\/li>\n<li>91.<\/li>\n<li>92.<\/li>\n<li>93.<\/li>\n<li>94.<\/li>\n<li>95.<\/li>\n<li>96.<\/li>\n<li>97.<\/li>\n<li>98.<\/li>\n<li>99.<\/li>\n<li>100.<\/li>\n<li>101.<\/li>\n<li>102.<\/li>\n<li>103.<\/li>\n<li>104.<\/li>\n<li>105.<\/li>\n<li>106.<\/li>\n<li>107.<\/li>\n<li>108.<\/li>\n<li>109.<\/li>\n<li>110.<\/li>\n<li>111.<\/li>\n<li>112.<\/li>\n<li>113.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u5728\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u5de5\u4f5c\u6d41\u9996\u5148\u4f7f\u7528ocrRunnable\u5c06\u6587\u6863\u56fe\u50cf\u8f6c\u6362\u4e3a\u6587\u672c\u3002\u63d0\u53d6\u7684\u6587\u672c\u88ab\u5206\u7c7b\u4e3a\u6587\u6863\u7c7b\u578b\uff08\u53d1\u7968\u3001\u5408\u540c\u6216\u6536\u636e\uff09\u3002RouterRunnable\u6839\u636e\u6587\u6863\u7c7b\u578b\u5c06\u6587\u672c\u5b9a\u5411\u5230\u9002\u5f53\u7684\u6570\u636e\u63d0\u53d6Runnable\u3002\u63d0\u53d6\u7684\u6570\u636e\u7ecf\u8fc7\u9a8c\u8bc1\uff0c\u7136\u540e\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u3002RunnableRetry\u786e\u4fdd\u5728\u53d1\u751f\u77ac\u65f6\u6545\u969c\u65f6\u91cd\u8bd5\u4fdd\u5b58\u6700\u591a\u4e09\u6b21\u3002\u5982\u679c\u4efb\u4e00\u6b65\u9aa4\u5931\u8d25\uff0cRunnableWithFallbacks\u4f1a\u63d0\u4f9b\u56de\u9000\u6d88\u606f\u4ee5\u59a5\u5584\u5904\u7406\u9519\u8bef\u3002<\/p>\n<h4>\u793a\u4f8b2\uff1a\u4e2a\u6027\u5316\u63a8\u8350\u5f15\u64ce<\/h4>\n<p>\u7535\u5b50\u5546\u52a1\u5e73\u53f0\u5e0c\u671b\u6839\u636e\u7528\u6237\u7684\u6d4f\u89c8\u5386\u53f2\u548c\u504f\u597d\u4e3a\u4ed6\u4eec\u63d0\u4f9b\u4e2a\u6027\u5316\u7684\u4ea7\u54c1\u63a8\u8350\u3002<\/p>\n<p>\u4f7f\u7528\u7684Runnable\u6709RunnableParallel\u3001RunnableMap\u3001RunnableBranch\u3001RunnableWithFallbacks\u7b49\uff0c\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_15\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span>\r\n RunnableParallel<span class=\"token punctuation\">,<\/span>\r\n RunnableMap<span class=\"token punctuation\">,<\/span>\r\n RunnableBranch<span class=\"token punctuation\">,<\/span>\r\n RunnableSequence<span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa41\uff1a\u5e76\u884c\u5730\u4ece\u591a\u4e2a\u6765\u6e90\u83b7\u53d6\u7528\u6237\u6570\u636e<\/span>\r\n<span class=\"token keyword\">const<\/span> fetchUserData <span class=\"token operator\">=<\/span> RunnableParallel<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">browsingHistory<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">userId<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u6a21\u62df\u83b7\u53d6\u6d4f\u89c8\u5386\u53f2\u8bb0\u5f55<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Item1\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Item2\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">purchaseHistory<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">userId<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u6a21\u62df\u83b7\u53d6\u8d2d\u4e70\u5386\u53f2\u8bb0\u5f55<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Item3\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa42\uff1a\u6620\u5c04\u5230\u83b7\u53d6\u7684\u6570\u636e\u4e0a\u4ee5\u8fdb\u884c\u5904\u7406<\/span>\r\n<span class=\"token keyword\">const<\/span> processUserData <span class=\"token operator\">=<\/span> RunnableMap<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">browsingHistory<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">history<\/span><span class=\"token operator\">:<\/span> any<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u5904\u7406\u6d4f\u89c8\u5386\u53f2\u8bb0\u5f55<\/span>\r\n <span class=\"token keyword\">return<\/span> history<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Processed <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n <span class=\"token literal-property property\">purchaseHistory<\/span><span class=\"token operator\">:<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">history<\/span><span class=\"token operator\">:<\/span> any<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u5904\u7406\u91c7\u8d2d\u5386\u53f2\u8bb0\u5f55<\/span>\r\n <span class=\"token keyword\">return<\/span> history<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Processed <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa43\uff1a\u5b9a\u4e49\u63a8\u8350\u7b97\u6cd5<\/span>\r\n<span class=\"token keyword\">const<\/span> newUserRecommendations <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ \u9488\u5bf9\u65b0\u7528\u6237\u7684\u903b\u8f91<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Product A\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Product B\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Product C\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> returningUserRecommendations <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u57fa\u4e8e\u5386\u53f2\u8bb0\u5f55\u8fd4\u56de\u7528\u6237\u7684\u903b\u8f91<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Product X\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Product Y\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Product Z\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa44\uff1a\u57fa\u4e8e\u7528\u6237\u7c7b\u578b\u7684\u5206\u652f\u5904\u7406<\/span>\r\n<span class=\"token keyword\">const<\/span> recommendationBranch <span class=\"token operator\">=<\/span> RunnableBranch<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token literal-property property\">user<\/span><span class=\"token operator\">:<\/span> any<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> user<span class=\"token punctuation\">.<\/span>isNew<span class=\"token punctuation\">,<\/span> newUserRecommendations<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>\r\n returningUserRecommendations<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa45\uff1a\u521b\u5efa\u4e00\u4e2a\u56de\u9000\u63a8\u8350\u7cfb\u7edf<\/span>\r\n<span class=\"token keyword\">const<\/span> defaultRecommendations <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">user<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/\u9ed8\u8ba4\u7684\u63a8\u8350<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Default Product 1\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Default Product 2\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> recommendationWithFallback <span class=\"token operator\">=<\/span> recommendationBranch<span class=\"token punctuation\">.<\/span><span class=\"token function\">withFallbacks<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n defaultRecommendations<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa46\uff1a\u5bf9\u6574\u4e2a\u5de5\u4f5c\u6d41\u8fdb\u884c\u6392\u961f\u64cd\u4f5c<\/span>\r\n<span class=\"token keyword\">const<\/span> recommendationWorkflow <span class=\"token operator\">=<\/span> RunnableSequence<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n fetchUserData<span class=\"token punctuation\">,<\/span>\r\n processUserData<span class=\"token punctuation\">,<\/span>\r\n <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token operator\">...<\/span>data<span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">isNew<\/span><span class=\"token operator\">:<\/span> data<span class=\"token punctuation\">.<\/span>purchaseHistory<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">===<\/span> <span class=\"token number\">0<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n recommendationWithFallback<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u7528\u6cd5<\/span>\r\n<span class=\"token keyword\">const<\/span> userId <span class=\"token operator\">=<\/span> <span class=\"token string\">\"user123\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">const<\/span> recommendations <span class=\"token operator\">=<\/span> recommendationWorkflow<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>userId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\uff1a\u57fa\u4e8e\u7528\u6237\u6570\u636e\u7684\u4e2a\u6027\u5316\u63a8\u8350<\/span><\/code><\/pre>\n<ul id=\"code_id_15\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<li>22.<\/li>\n<li>23.<\/li>\n<li>24.<\/li>\n<li>25.<\/li>\n<li>26.<\/li>\n<li>27.<\/li>\n<li>28.<\/li>\n<li>29.<\/li>\n<li>30.<\/li>\n<li>31.<\/li>\n<li>32.<\/li>\n<li>33.<\/li>\n<li>34.<\/li>\n<li>35.<\/li>\n<li>36.<\/li>\n<li>37.<\/li>\n<li>38.<\/li>\n<li>39.<\/li>\n<li>40.<\/li>\n<li>41.<\/li>\n<li>42.<\/li>\n<li>43.<\/li>\n<li>44.<\/li>\n<li>45.<\/li>\n<li>46.<\/li>\n<li>47.<\/li>\n<li>48.<\/li>\n<li>49.<\/li>\n<li>50.<\/li>\n<li>51.<\/li>\n<li>52.<\/li>\n<li>53.<\/li>\n<li>54.<\/li>\n<li>55.<\/li>\n<li>56.<\/li>\n<li>57.<\/li>\n<li>58.<\/li>\n<li>59.<\/li>\n<li>60.<\/li>\n<li>61.<\/li>\n<li>62.<\/li>\n<li>63.<\/li>\n<li>64.<\/li>\n<li>65.<\/li>\n<li>66.<\/li>\n<li>67.<\/li>\n<li>68.<\/li>\n<li>69.<\/li>\n<li>70.<\/li>\n<li>71.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u5728\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u5de5\u4f5c\u6d41\u9996\u5148\u4f7f\u7528RunnableParallel\u540c\u65f6\u83b7\u53d6\u7528\u6237\u7684\u6d4f\u89c8\u5386\u53f2\u3001\u8d2d\u4e70\u5386\u53f2\u548c\u4e2a\u4eba\u8d44\u6599\u3002\u7136\u540e\uff0c\u4f7f\u7528RunnableMap\u5355\u72ec\u5904\u7406\u6bcf\u6761\u6570\u636e\uff0c\u4e3a\u751f\u6210\u63a8\u8350\u505a\u597d\u51c6\u5907\u3002<\/p>\n<p>RunnableBranch\u6839\u636e\u7528\u6237\u7684\u4e2a\u4eba\u8d44\u6599\u51b3\u5b9a\u4f7f\u7528\u54ea\u79cd\u63a8\u8350\u7b97\u6cd5\uff1a<\/p>\n<ul data-id=\"u738a58b-XUbNUKAe\">\n<li data-id=\"ld70c578-6iSG7LjV\">\u5982\u679c\u7528\u6237\u662f\u9ad8\u7ea7\u4f1a\u5458\uff08isPremiumMembe\u4e3atrue\uff09\uff0c\u5219\u4f7f\u7528premiumUserRecommendations\u3002<\/li>\n<li data-id=\"ld70c578-15BlW8IZ\">\u5982\u679c\u7528\u6237\u6ca1\u6709\u8d2d\u4e70\u5386\u53f2\uff08\u8868\u793a\u662f\u65b0\u7528\u6237\uff09\uff0c\u5219\u4f7f\u7528newUserRecommendations\u3002<\/li>\n<li data-id=\"ld70c578-Pbk98AjE\">\u5426\u5219\uff0c\u9ed8\u8ba4\u4e3aregularUserRecommendations\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u63a8\u8350\u8fc7\u7a0b\u4e2d\u7684\u4efb\u4e00\u6b65\u9aa4\u5931\u8d25\uff0cRunnableWithFallbacks\u53ef\u786e\u4fdd\u7cfb\u7edf\u63d0\u4f9b\u4e00\u7ec4\u9ed8\u8ba4\u63a8\u8350\uff0c\u4ece\u800c\u4fdd\u6301\u826f\u597d\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<p>\u6700\u540e\uff0cRunnableSequence\u534f\u8c03\u6574\u4e2a\u5de5\u4f5c\u6d41\uff0c\u786e\u4fdd\u6bcf\u4e2a\u6b65\u9aa4\u90fd\u6309\u6b63\u786e\u7684\u987a\u5e8f\u8fdb\u884c\u3002\u5de5\u4f5c\u6d41\u901a\u8fc7\u4f7f\u7528userId\u8c03\u7528\u6765\u6267\u884c\uff0c\u5e76\u6839\u636e\u7528\u6237\u7684\u6570\u636e\u8f93\u51fa\u4e2a\u6027\u5316\u63a8\u8350\u3002<\/p>\n<h4>\u793a\u4f8b3\uff1a\u7528\u4e8e\u5206\u6790\u7684\u6570\u636e\u5904\u7406\u7ba1\u9053<\/h4>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u5047\u5b9a\u6709\u4e00\u5bb6\u516c\u53f8\u9700\u8981\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u4ee5\u751f\u6210\u6d89\u53ca\u6570\u636e\u6e05\u7406\u3001\u8f6c\u6362\u3001\u5206\u6790\u548c\u53ef\u89c6\u5316\u7684\u5206\u6790\u62a5\u544a\u3002<\/p>\n<p>\u4f7f\u7528\u7684Runnable\u6709RunnableSequence\u3001RunnableEach\u3001RunnableRetry\u3001RunnableBinding\uff0c\u5173\u952e\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div>\n<div class=\"hljs-cto\">\n<div class=\"hljs-cto\"><button class=\"copy_btn disable\" data-clipboard-target=\"#code_id_16\">\u590d\u5236<\/button><\/p>\n<div class=\"code-toolbar\">\n<pre class=\"has-pre-numbering language-javascript\" tabindex=\"0\"><code class=\"language-javascript\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span>\r\n RunnableSequence<span class=\"token punctuation\">,<\/span>\r\n RunnableEach<span class=\"token punctuation\">,<\/span>\r\n RunnableLambda<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">\"@langchain\/core\/runnables\"<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa41\uff1a\u901a\u8fc7\u4f7f\u7528\u91cd\u8bd5\u7684\u65b9\u5f0f\u5b9a\u4e49\u6570\u636e\u83b7\u53d6<\/span>\r\n<span class=\"token keyword\">const<\/span> fetchData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">source<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ Simulate data fetching, which may fail<\/span>\r\n <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">random<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0.2<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"Data fetch error\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n <span class=\"token punctuation\">}<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Data from <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>source<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">withRetry<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">stopAfterAttempt<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa42\uff1a\u6570\u636e\u6e05\u7406<\/span>\r\n<span class=\"token keyword\">const<\/span> cleanData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ Perform data cleaning<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Cleaned <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa43\uff1a\u6570\u636e\u8f6c\u6362<\/span>\r\n<span class=\"token keyword\">const<\/span> transformData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ Transform data<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Transformed <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa44\uff1a\u6570\u636e\u5206\u6790<\/span>\r\n<span class=\"token keyword\">const<\/span> analyzeData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">data<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ Analyze data<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Analysis results of <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>data<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa45\uff1a\u6570\u636e\u53ef\u89c6\u5316<\/span>\r\n<span class=\"token keyword\">const<\/span> visualizeData <span class=\"token operator\">=<\/span> RunnableLambda<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">analysis<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">=&gt;<\/span> <span class=\"token punctuation\">{<\/span>\r\n <span class=\"token comment\">\/\/ Generate visualization<\/span>\r\n <span class=\"token keyword\">return<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">`<\/span><span class=\"token string\">Visualization of <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>analysis<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">`<\/span><\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/\u6b65\u9aa46\uff1a\u6b65\u9aa4\u6392\u961f<\/span>\r\n<span class=\"token keyword\">const<\/span> dataProcessingSequence <span class=\"token operator\">=<\/span> RunnableSequence<span class=\"token punctuation\">.<\/span><span class=\"token function\">from<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>\r\n cleanData<span class=\"token punctuation\">,<\/span>\r\n transformData<span class=\"token punctuation\">,<\/span>\r\n analyzeData<span class=\"token punctuation\">,<\/span>\r\n visualizeData<span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u6b65\u9aa47\uff1a\u5904\u7406\u591a\u4e2a\u6570\u636e\u6e90<\/span>\r\n<span class=\"token keyword\">const<\/span> dataSources <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\"Dataset A\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Dataset B\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"Dataset C\"<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token keyword\">const<\/span> processAllData <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RunnableEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\r\n <span class=\"token literal-property property\">bound<\/span><span class=\"token operator\">:<\/span> fetchData<span class=\"token punctuation\">.<\/span><span class=\"token function\">pipe<\/span><span class=\"token punctuation\">(<\/span>dataProcessingSequence<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\r\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n\r\n<span class=\"token comment\">\/\/ \u7528\u6cd5<\/span>\r\n<span class=\"token keyword\">const<\/span> reports <span class=\"token operator\">=<\/span> processAllData<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>dataSources<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token comment\">\/\/ \u8f93\u51fa\uff1a\u6bcf\u4e2a\u6570\u636e\u6e90\u7684\u53ef\u89c6\u5316\u7ed3\u679c\u6570\u7ec4<\/span><\/code><\/pre>\n<ul id=\"code_id_16\" class=\"pre-numbering\">\n<li>1.<\/li>\n<li>2.<\/li>\n<li>3.<\/li>\n<li>4.<\/li>\n<li>5.<\/li>\n<li>6.<\/li>\n<li>7.<\/li>\n<li>8.<\/li>\n<li>9.<\/li>\n<li>10.<\/li>\n<li>11.<\/li>\n<li>12.<\/li>\n<li>13.<\/li>\n<li>14.<\/li>\n<li>15.<\/li>\n<li>16.<\/li>\n<li>17.<\/li>\n<li>18.<\/li>\n<li>19.<\/li>\n<li>20.<\/li>\n<li>21.<\/li>\n<li>22.<\/li>\n<li>23.<\/li>\n<li>24.<\/li>\n<li>25.<\/li>\n<li>26.<\/li>\n<li>27.<\/li>\n<li>28.<\/li>\n<li>29.<\/li>\n<li>30.<\/li>\n<li>31.<\/li>\n<li>32.<\/li>\n<li>33.<\/li>\n<li>34.<\/li>\n<li>35.<\/li>\n<li>36.<\/li>\n<li>37.<\/li>\n<li>38.<\/li>\n<li>39.<\/li>\n<li>40.<\/li>\n<li>41.<\/li>\n<li>42.<\/li>\n<li>43.<\/li>\n<li>44.<\/li>\n<li>45.<\/li>\n<li>46.<\/li>\n<li>47.<\/li>\n<li>48.<\/li>\n<li>49.<\/li>\n<li>50.<\/li>\n<li>51.<\/li>\n<li>52.<\/li>\n<li>53.<\/li>\n<li>54.<\/li>\n<li>55.<\/li>\n<li>56.<\/li>\n<li>57.<\/li>\n<\/ul>\n<div class=\"toolbar\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6b64\u5de5\u4f5c\u6d41\u5904\u7406\u6765\u81ea\u4e0d\u540c\u6765\u6e90\u7684\u591a\u4e2a\u6570\u636e\u96c6\u7684\u6570\u636e\u5904\u7406\u3002\u9996\u5148\uff0c\u5b9a\u4e49\u4e00\u4e2a\u4f7f\u7528RunnableBinding\u7ed1\u5b9a\u5230\u7279\u5b9a\u6570\u636e\u6e90\u7684fetchData\u53ef\u8fd0\u884c\u7a0b\u5e8f\u3002\u6bcf\u4e2a\u6570\u636e\u83b7\u53d6\u64cd\u4f5c\u90fd\u4f7f\u7528RunnableRetry\u5305\u88c5\uff0c\u901a\u8fc7\u91cd\u8bd5\u6700\u591a\u4e09\u6b21\u6765\u5904\u7406\u77ac\u65f6\u6545\u969c\u3002<\/p>\n<p>\u4ece\u6bcf\u4e2a\u6e90\u83b7\u53d6\u7684\u6570\u636e\u7ecf\u8fc7RunnableSequence\u5b9a\u4e49\u7684\u4e00\u7cfb\u5217\u5904\u7406\u6b65\u9aa4\uff1a<\/p>\n<ol data-id=\"o9d5df12-MBDeNdlk\">\n<li data-id=\"ld70c578-D4eUYRgO\">\u6570\u636e\u6e05\u7406\uff1a\u5220\u9664\u6216\u66f4\u6b63\u9519\u8bef\u6570\u636e\u3002<\/li>\n<li data-id=\"ld70c578-ZqjklZ0a\">\u6570\u636e\u8f6c\u6362\uff1a\u5c06\u6570\u636e\u8f6c\u6362\u4e3a\u9002\u5408\u5206\u6790\u7684\u683c\u5f0f\u3002<\/li>\n<li data-id=\"ld70c578-fFCrgBWM\">\u6570\u636e\u5206\u6790\uff1a\u6267\u884c\u5206\u6790\u8ba1\u7b97\u3002<\/li>\n<li data-id=\"ld70c578-YdFEpFBc\">\u6570\u636e\u53ef\u89c6\u5316\uff1a\u751f\u6210\u9488\u5bf9\u5206\u6790\u7ed3\u679c\u7684\u53ef\u89c6\u5316\u8868\u793a\u3002<\/li>\n<\/ol>\n<p>\u5728\u6b64\uff0c\u4f7f\u7528RunnableEach\u6765\u5e76\u884c\u5904\u7406\u591a\u4e2a\u6570\u636e\u96c6\u3002\u8fd9\u4e2a\u5bf9\u8c61\u5c06\u76f8\u540c\u7684\u5904\u7406\u987a\u5e8f\u5e94\u7528\u4e8e\u6bcf\u4e2a\u6570\u636e\u96c6\u4e0a\u3002<\/p>\n<h3>\u7ed3\u8bba<\/h3>\n<p>\u603b\u4f53\u6765\u770b\uff0cLangChain\u4e2d\u7684Runnable\u67b6\u6784\u662f\u6784\u5efa\u6d89\u53ca\u5927\u578b\u8bed\u8a00\u6a21\u578b\uff08LLM\uff09\u7684\u590d\u6742\u6a21\u5757\u5316\u5de5\u4f5c\u6d41\u7684\u5f3a\u5927\u57fa\u7840\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u63a2\u8ba8\u4e86\u5982\u4f55\u521b\u5efa\u548c\u7ec4\u5408\u5404\u79cdRunnable\u4ee5\u5e94\u5bf9\u5404\u79cd\u6311\u6218\uff1a<\/p>\n<ul data-id=\"u738a58b-9RjdBRLk\">\n<li data-id=\"ld70c578-reANaobb\">\u8def\u7531\u548c\u5206\u652f\uff1a\u5229\u7528RouterRunnable\u548cRunnableBranch\u53ef\u4ee5\u6839\u636e\u8fd0\u884c\u65f6\u6761\u4ef6\u5b9e\u73b0\u52a8\u6001\u6267\u884c\u8def\u5f84\u3002<\/li>\n<li data-id=\"ld70c578-ECfhiflQ\">\u6570\u636e\u64cd\u4f5c\u548c\u5206\u914d\uff1aRunnableAssign\u3001RunnablePick\u548cRunnableMap\u7b49\u5de5\u5177\u63d0\u4f9b\u7075\u6d3b\u7684\u6570\u636e\u8f6c\u6362\u529f\u80fd\uff0c\u4e3a\u540e\u7eed\u5904\u7406\u6b65\u9aa4\u51c6\u5907\u8f93\u5165\u3002<\/li>\n<li data-id=\"ld70c578-MGFnkMF6\">\u5e8f\u5217\u548c\u5de5\u4f5c\u6d41\u7ec4\u5408\uff1a\u901a\u8fc7\u4f7f\u7528RunnableSequence\u3001RunnableEach\u548cRunnableParallel\u94fe\u63a5\u4efb\u52a1\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u534f\u8c03\u6d41\u7a0b\uff0c\u65e0\u8bba\u5b83\u4eec\u662f\u9700\u8981\u987a\u5e8f\u6267\u884c\u8fd8\u662f\u5e76\u884c\u5904\u7406\u3002<\/li>\n<li data-id=\"ld70c578-T8eWMbsQ\">\u9519\u8bef\u5904\u7406\u548c\u5f39\u6027\uff1a\u501f\u52a9RunnableRetry\u548cRunnableWithFallbacks\uff0c\u5de5\u4f5c\u6d41\u53ef\u4ee5\u4f18\u96c5\u5730\u5904\u7406\u9519\u8bef\u5e76\u63d0\u4f9b\u56de\u9000\u673a\u5236\u3002<\/li>\n<\/ul>\n<p>\u603b\u4e4b\uff0cRunnable\u63d0\u5021\u4e86\u4e00\u79cd\u7ed3\u6784\u5316\u7684\u65b9\u6cd5\u6765\u6784\u5efaLLM\u4ee3\u7406\u548c\u94fe\u3002\u6700\u540e\uff0c\u5728\u4f60\u8ba1\u5212\u5c06LangChain\u96c6\u6210\u5230\u5b9e\u9645\u9879\u76ee\u4e2d\u65f6\uff0c\u8bf7\u8ba4\u771f\u8003\u8651Runnables\u5982\u4f55\u589e\u5f3a\u4f60\u7684\u5de5\u4f5c\u6d41\uff0c\u4f7f\u5176\u66f4\u7075\u6d3b\u3001\u66f4\u6709\u5f39\u6027\u4e14\u66f4\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n<\/div>\n<p>\u6587\u7ae0\u6765\u81ea\uff1a51CTO<\/p>\n<\/div>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_23585\" class=\"pvc_stats total_only  \" data-element-id=\"23585\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg 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