{"id":22237,"date":"2025-11-04T12:36:46","date_gmt":"2025-11-04T12:36:46","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=22237"},"modified":"2025-11-04T12:36:46","modified_gmt":"2025-11-04T12:36:46","slug":"%e5%a4%a7typescript%e6%99%82%e4%bb%a3%e3%82%92%e6%94%af%e3%81%88%e3%82%8basynclocalstorage%e3%81%ab%e3%82%88%e3%82%8b%e3%83%aa%e3%82%af%e3%82%a8%e3%82%b9%e3%83%88%e3%82%b9%e3%82%b3%e3%83%bc%e3%83%97","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/22237\/","title":{"rendered":"\u5927TypeScript\u6642\u4ee3\u3092\u652f\u3048\u308bAsyncLocalStorage\u306b\u3088\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u7ba1\u7406 – LayerX \u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0"},"content":{"rendered":"\n<\/p>\n
\n

LayerX AI Agent \u30d6\u30ed\u30b0\u30ea\u30ec\u30fc\u00a038\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n

\u3053\u3093\u306b\u3061\u306f\u3001LayerX \u30d0\u30af\u30e9\u30af\u4e8b\u696d\u90e8 Platform Engineering \u90e8 Enabling \u30b0\u30eb\u30fc\u30d7\u306b\u65b0\u5352\u5165\u793e\u3057\u305f\u00a0shibutani<\/a>\u00a0\u3068\u7533\u3057\u307e\u3059\u3002<\/p>\n

\u5f0a\u793e\u3067\u306f\u65e9\u304f\u304b\u3089LLM\u3092\u7d44\u307f\u8fbc\u3093\u3060\u6a5f\u80fd\u958b\u767a\u3092\u884c\u3063\u3066\u304a\u308a\u3001\u591a\u304f\u306eAI\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059<\/a>\u3002\u4e00\u90e8\u306e\u30d7\u30ed\u30c0\u30af\u30c8\u3067\u306f\u3001\u305d\u3046\u3044\u3063\u305fAI\u6a5f\u80fd\u306e\u958b\u767a\u306b\u304a\u3044\u3066Vercel AI SDK\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u3088\u3046\u306a\u80cc\u666f\u3082\u3042\u308a\u3001\u3053\u308c\u307e\u3067\u306fGo\u8a00\u8a9e\u3092\u4e2d\u5fc3\u3068\u3057\u305f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u304c\u4e3b\u6d41\u3067\u3042\u3063\u305f\u5f0a\u793e\u3067\u3082TypeScript\u3092\u7528\u3044\u305f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u3092\u884c\u3046\u30b1\u30fc\u30b9\u304c\u767b\u5834\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n

TypeScript\u306b\u304a\u3051\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u7ba1\u7406<\/h2>\n

\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u30ed\u30b0\u3084\u30c6\u30ec\u30e1\u30c8\u30ea\u306e\u9001\u4fe1\u306a\u3069\u69d8\u3005\u306a\u5834\u6240\u3067\u30e6\u30fc\u30b6\u30fcID\u306a\u3069\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306bLLM\u3092\u7528\u3044\u305f\u30d7\u30ed\u30c0\u30af\u30c8\u958b\u767a\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u7cbe\u5ea6\u6539\u5584\u306e\u305f\u3081\u306b\u30e6\u30fc\u30b6\u30fc\u306e\u884c\u52d5\u3092\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3067\u304d\u308bTraceID\u306a\u3069\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u91cd\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

Go\u8a00\u8a9e\u306b\u304a\u3044\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306b\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3067context.Context\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u305d\u306e\u969b\u306b\u306f\u3001\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u5f15\u6570\u306b\u660e\u793a\u7684\u306bcontext.Context\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6e21\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u3088\u3046\u306a\u5f15\u6570\u306b\u3088\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u7ba1\u7406\u304c\u4e00\u822c\u5316\u3057\u3066\u3044\u308b\u7406\u7531\u3068\u3057\u3066\u306f3rd Party\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u542b\u3081\u3066\u591a\u304f\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u304ccontext.Context\u3092\u5f15\u304d\u53d7\u3051\u308b\u5f62\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u308c\u306b\u3088\u3063\u3066\u3001\u958b\u767a\u8005\u306f\u3068\u308a\u3042\u3048\u305acontext.Context\u306b\u60c5\u5831\u3092\u5165\u308c\u3066\u304a\u3051\u3070\u3088\u3044\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u3057\u304b\u3057\u3001TypeScript(ECMAScript\/Node.js)\u306b\u304a\u3044\u3066\u306f\u305d\u306e\u3088\u3046\u306a\u5f15\u6570\u306b\u3088\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u7ba1\u7406\u304cGo\u8a00\u8a9e\u307b\u3069\u4e00\u822c\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u3067\u306f\u3001TypeScript\u306b\u304a\u3044\u3066\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u306e\u65b9\u6cd5\u304c\u6b21\u306e\u7ae0\u3067\u7d39\u4ecb\u3059\u308bAsyncLocalStorage\u3067\u3059\u3002<\/p>\n

AsyncLocalStorage<\/h2>\n

Node.js\u306e\u516c\u5f0f\u30b5\u30a4\u30c8<\/a>\u306b\u3088\u308b\u3068AsyncLocalStorage\u3068\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n

\n

These classes are used to associate state and propagate it throughout callbacks and promise chains. They allow storing data throughout the lifetime of a web request or any other asynchronous duration. It is similar to thread-local storage in other languages.<\/p>\n<\/blockquote>\n

AsyncLocalStorage\u306fNode.js\u304c\u63d0\u4f9b\u3059\u308b\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3067\u3042\u308a\u3001\u540c\u671f\u95a2\u6570\u306b\u304a\u3051\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3084\u3001\u975e\u540c\u671f\u95a2\u6570\u306b\u304a\u3051\u308bPromise\u30c1\u30a7\u30fc\u30f3\u306e\u4e2d\u3067\u30c7\u30fc\u30bf\u304c\u4fdd\u6301\u3055\u308c\u308b\u305f\u3081\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u306e\u306b\u6d3b\u7528\u3067\u304d\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n

\u305d\u308c\u3067\u306f\u3001AsyncLocalStorage\u306e\u5177\u4f53\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u9806\u3092\u8ffd\u3063\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002AsyncLocalStorage\u306e\u57fa\u672c\u7684\u306a\u8981\u7d20\u306fstore\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001run\u95a2\u6570\u3001enterWith\u95a2\u6570\u3067\u3059\u3002<\/p>\n

store\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fAsyncLocalStorage\u306b\u30bb\u30c3\u30c8\u3055\u308c\u305f\u5024\u305d\u306e\u3082\u306e\u3092\u6307\u3057\u307e\u3059\u3002store\u306e\u5f62\u5f0f\u306b\u7279\u306b\u6c7a\u307e\u308a\u306f\u306a\u304f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u5024\u3092\u76f4\u63a5\u5165\u529b\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u304c\u3001\u4e00\u822c\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u306f\u30ad\u30fc\u30d0\u30ea\u30e5\u30fc\u578b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5165\u529b\u3059\u308b\u3053\u3068\u304c\u307b\u3068\u3093\u3069\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

run\u95a2\u6570\u306fstore\u306b\u65b0\u3057\u3044\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3001\u305d\u306e\u5024\u306e\u6709\u52b9\u7bc4\u56f2\u3092\u6c7a\u5b9a\u3059\u308b\u95a2\u6570\u3067\u3059\u3002run\u95a2\u6570\u306e\u7b2c\u4e8c\u5f15\u6570\u3067\u6307\u5b9a\u3055\u308c\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u3057\u304f\u306f\u975e\u540c\u671f\u95a2\u6570\u306e\u4e2d\u3067\u306f\u65b0\u3057\u3044store\u306e\u5024\u304c\u53d6\u5f97\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5144\u5f1f\u95a2\u4fc2\u306b\u3042\u308brun\u95a2\u6570\u306e\u9593\u3067\u306fstore\u306e\u5024\u306f\u5171\u6709\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n

import<\/span> {<\/span> AsyncLocalStorage }<\/span> from<\/span> 'node:async_hooks'<\/span>;\n\nconst<\/span> storage = new<\/span> AsyncLocalStorage{ key<\/span>: string<\/span> }<\/span>>();\n\nstorage.run({<\/span> key<\/span>: 'value1'<\/span> }<\/span>, () <\/span>=><\/span> {<\/span>\n  console<\/span>.log(storage.getStore()!.key<\/span>); \n}<\/span>);\n\nconsole<\/span>.log<\/span>(storage.getStore()!.key<\/span>) \n\nstorage.run({<\/span> key<\/span>: 'value2'<\/span> }<\/span>, () <\/span>=><\/span> {<\/span>\n  console<\/span>.log(storage.getStore()!.key<\/span>); \n}<\/span>);\n<\/pre>\n
enterWith\u95a2\u6570\u3082\u540c\u69d8\u306bstore\u306b\u65b0\u3057\u3044\u5024\u3092\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002run\u95a2\u6570\u3068\u306e\u5927\u304d\u306a\u9055\u3044\u3068\u3057\u3066\u306f\u3001enterWith\u95a2\u6570\u3067\u306f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u5fc5\u8981\u3068\u3057\u307e\u305b\u3093\u3002\u305d\u306e\u70b9\u306f\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u306e\u3088\u3046\u306b\u601d\u3048\u307e\u3059\u304c\u3001\u5024\u306e\u30b9\u30b3\u30fc\u30d7\u304c\u308f\u304b\u308a\u3065\u3089\u3044\u3068\u3044\u3046\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u4e0b\u8a18\u306e\u3088\u3046\u306b\u3001\u3042\u308b\u6642\u70b9\u3067\u306f\u5024\u304c\u542b\u307e\u308c\u3066\u3044\u305f\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u4ed6\u306e\u51e6\u7406\u306b\u3088\u3063\u3066\u610f\u56f3\u305b\u305aundefined\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u3053\u3068\u304c\u8d77\u3053\u308a\u3048\u307e\u3059\u3002<\/p>\n
import<\/span> {<\/span> AsyncLocalStorage }<\/span> from<\/span> 'node:async_hooks'<\/span>;\n\nconst<\/span> storage = new<\/span> AsyncLocalStorage{ key<\/span>: string<\/span> }<\/span>>();\n\nstorage.enterWith({<\/span> key<\/span>: 'value1'<\/span> }<\/span>);\nconsole<\/span>.log<\/span>(storage.getStore()!.key<\/span>); \n\nstorage.enterWith({<\/span> key<\/span>: undefined<\/span> }<\/span>);\nconsole<\/span>.log<\/span>(storage.getStore()!.key<\/span>); \n<\/pre>\n
AsyncLocalStorage\u81ea\u4f53\u306f\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3001\u5168\u3066\u306e\u7b87\u6240\u304b\u3089\u305d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u7d4c\u7531\u3067store\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\u305d\u306e\u969b\u306e\u30b9\u30b3\u30fc\u30d7\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u5024\u304cstore\u7d4c\u7531\u3067\u53d6\u308a\u51fa\u305b\u308b\u3068\u3044\u3046\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u306b\u3088\u3063\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u4f7f\u3044\u3084\u3059\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u8a2d\u8a08\u3092\u76ee\u6307\u3057\u3066<\/h2>\n
\u3053\u3053\u304b\u3089\u306fAsyncLocalStorage\u3092\u7528\u3044\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u30e1\u30bf\u30c7\u30fc\u30bf\u7ba1\u7406\u3092\u884c\u3046\u30af\u30e9\u30b9\u3092\u8a2d\u8a08\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u305d\u306e\u969b\u306e\u5927\u304d\u306a\u8ad6\u70b9\u3068\u3057\u3066\u3001store\u306b\u5bfe\u3057\u3066\u65b0\u3057\u3044\u5024\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306b\u3001run\u95a2\u6570\u3092\u4f7f\u3046\u304b\u3001\u305d\u308c\u3068\u3082enterWith\u95a2\u6570\u3092\u4f7f\u3046\u304b\u3068\u3044\u3046\u8ad6\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
run\u95a2\u6570\u3092\u4f7f\u3046\u5834\u5408\u3001run\u95a2\u6570\u306e\u4e2d\u3067\u5f15\u6570\u3068\u3057\u3066\u6307\u5b9a\u3055\u308c\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u4e2d\u3067\u306e\u307f\u65b0\u3057\u3044store\u304c\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001store\u306e\u30b9\u30b3\u30fc\u30d7\u304c\u308f\u304b\u308a\u3084\u3059\u304f\u3001\u6697\u9ed9\u7684\u306astore\u306e\u6c5a\u67d3\u304c\u8d77\u3053\u308a\u3065\u3089\u3044\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e00\u65b9\u3067\u3001\u5024\u304c\u8ffd\u52a0\u3055\u308c\u308b\u305f\u3073\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u4e2d\u3067\u5f8c\u7d9a\u306e\u51e6\u7406\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n
enterWith\u95a2\u6570\u3092\u4f7f\u3046\u5834\u5408\u306b\u306f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u304c\u4e0d\u8981\u3068\u306a\u308b\u4e00\u65b9\u3067\u3001\u65b0\u3057\u3044\u5024\u304c\u8ffd\u52a0\u3055\u308c\u305fstore\u306e\u30b9\u30b3\u30fc\u30d7\u304c\u308f\u304b\u308a\u3065\u3089\u304f\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30cf\u30f3\u30c9\u30e9\u306e\u4e0a\u6d41\u3067\u4f7f\u7528\u3055\u308c\u305f\u5834\u5408\u3001\u4ed6\u306e\u30c6\u30ca\u30f3\u30c8\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30b9\u30b3\u30fc\u30d7\u304c\u5171\u6709\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u305d\u3053\u3067\u3001enterWith\u306f\u30c6\u30b9\u30c8\u306a\u3069\u9650\u3089\u308c\u305f\u76ee\u7684\u3067\u306e\u307f\u5229\u7528\u3059\u308b\u3079\u304d\u3082\u306e\u3068\u5b9a\u3081\u3001run\u95a2\u6570\u3092\u4e2d\u5fc3\u3068\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u8a2d\u8a08\u3092\u884c\u3046\u3053\u3068\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u3055\u3089\u306b\u3001\u5f0a\u793e\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u3067\u306f\u3053\u308c\u307e\u3067Go\u8a00\u8a9e\u304c\u4e2d\u5fc3\u7684\u306b\u5229\u7528\u3055\u308c\u3066\u304d\u305f\u305f\u3081\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306bGo\u8a00\u8a9e\u306econtext.Context\u306b\u8fd1\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u8a2d\u8a08\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n
import<\/span> {<\/span> AsyncLocalStorage }<\/span> from<\/span> 'node:async_hooks'<\/span>;\n\nexport<\/span> type <\/span>ContextKey<\/span>T> <\/span>=<\/span> {<\/span>\n  id<\/span>: unique symbol<\/span>;<\/span>\n  readonly<\/span> $_type<\/span>?: T<\/span>;<\/span> \n}<\/span>;\n\nexport<\/span> class<\/span> ContextCalledOutsideOfContextError extends<\/span> Error<\/span> {<\/span>\n  constructor<\/span>() {<\/span>\n    super<\/span>('Context was accessed outside of an active AsyncLocalStorage scope.'<\/span>);\n  }<\/span>\n}<\/span>\n\nclass<\/span> Context {<\/span>\n  \n  private<\/span> readonly<\/span> storage<\/span> = new<\/span> AsyncLocalStorageMapsymbol, unknown<\/span>>>();\n\n  \n\n\n  public<\/span> withValue<\/span>T, R<\/span>, Args<\/span> extends<\/span> unknown<\/span>[]>(\n    key<\/span>: <\/span>ContextKey<\/span>T>,<\/span>\n    value<\/span>: <\/span>T<\/span>,<\/span>\n    fn<\/span>: <\/span>(...args<\/span>: <\/span>Args<\/span>) =><\/span> <\/span>R<\/span>,<\/span>\n    <\/span>...args<\/span>: <\/span>Args<\/span>\n  <\/span>): R<\/span> {<\/span>\n    const<\/span> parent = this<\/span>.storage.getStore();\n    const<\/span> newStore = parent<\/span> ? new<\/span> Map<\/span>(parent<\/span>) : new<\/span> Map<\/span>symbol, unknown<\/span>>();\n    newStore.set<\/span>(key.id<\/span>, value);\n    return<\/span> this<\/span>.storage.run(newStore, fn, ...args);\n  }<\/span>\n\n  \n\n\n\n  public<\/span> getValue<\/span>T>(key<\/span>: <\/span>ContextKey<\/span>T>): T<\/span> |<\/span> undefined<\/span> {<\/span>\n    const<\/span> store = this<\/span>.storage.getStore();\n    if<\/span> (!store) {<\/span>\n      throw<\/span> new<\/span> ContextCalledOutsideOfContextError();\n    }<\/span>\n    if<\/span> (!store.has<\/span>(key.id<\/span>)) {<\/span>\n      return<\/span> undefined<\/span>;\n    }<\/span>\n    return<\/span> store.get<\/span>(key.id<\/span>) as<\/span> T<\/span>;\n  }<\/span>\n}<\/span>\n\nexport<\/span> const<\/span> context = new<\/span> Context();\n<\/pre>\n
\u7279\u306b\u3053\u3060\u308f\u3063\u3066\u3044\u308b\u306e\u304c\u3001getValue\u95a2\u6570\u306e\u90e8\u5206\u3067\u3059\u3002Go\u8a00\u8a9e\u306econtext.Context\u306b\u304a\u3044\u3066\u5024\u3092\u53d6\u5f97\u3059\u308b\u969b\u306f\u3001\u540c\u6642\u306b\u5024\u306e\u578b\u30c1\u30a7\u30c3\u30af\u3092\u30e9\u30f3\u30bf\u30a4\u30e0\u3067\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3001\u578b\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3 (\u4f8b: foo.(string)<\/code>) \u3092\u5b9f\u884c\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u3057\u304b\u3057\u3001TypeScript\u306b\u304a\u3044\u3066\u306f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092\u9664\u304d\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u306b\u304a\u3051\u308b\u53b3\u5bc6\u306a\u578b\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
\u305d\u3053\u3067\u3001\u4e8b\u5f8c\u7684\u306b\u578b\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u306e\u3067\u306f\u306a\u304f\u3001\u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3059\u308bkey\u306e\u578b\u306b\u3001\u5bfe\u5fdc\u3059\u308b\u5024\u306e\u578b\u3092\u542b\u3081\u3066\u3001\u53c2\u7167\u30fb\u633f\u5165\u3068\u3082\u306b\u578b\u5b89\u5168\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u578b\u30ac\u30fc\u30c9\u95a2\u6570\u306a\u3069\u306e\u5b9f\u88c5\u8005\u306b\u4f9d\u5b58\u3059\u308b\u5f62\u3067\u306e\u578b\u30c1\u30a7\u30c3\u30af\u3092\u884c\u308f\u305a\u306b\u3001\u578b\u5b89\u5168\u306b\u5024\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\nexport<\/span> const<\/span> tenantIdKey: ContextKey<\/span>string> = {<\/span> id<\/span>: Symbol<\/span>('tenantId'<\/span>) }<\/span>;\n\ncontext.withValue(tenantIdKey, 't_123'<\/span>, async<\/span> () <\/span>=><\/span> {<\/span>  }<\/span>);\n<\/pre>\n
\u5f0a\u793e\u3067\u306e\u6d3b\u7528\u4f8b<\/h2>\n
\u5f0a\u793e\u3067\u306fWorkflow Engine\u306eTemporal\u3068Vercel\u306eAI SDK\u3092\u7d44\u307f\u5408\u308f\u305b\u305fAgent\u6a5f\u80fd\u958b\u767a\u3092\u884c\u3063\u3066\u3044\u307e\u3059<\/a>\u3002\u305d\u306e\u969b\u306b\u3001Temporal Activity\u306eInterceptor\u306b\u304a\u3044\u3066TraceId\u306a\u3069\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u3092Context\u306b\u8ffd\u52a0\u3057\u3001\u540c\u4e00\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u3067\u5b9f\u884c\u3055\u308c\u308bOpenTelemetry\u306eSpanProcessor\u306b\u304a\u3044\u3066Context\u304b\u3089\u53d6\u308a\u51fa\u3057\u305fTraceID\u3092\u4ed8\u4e0e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\nclass<\/span> Interceptor implements<\/span> ActivityInboundCallsInterceptor {<\/span>\n  public<\/span> async<\/span> execute<\/span>(\n    input<\/span>: <\/span>ActivityExecuteInput<\/span>,<\/span>\n    next<\/span>: <\/span>Next<\/span>ActivityInboundCallsInterceptor, \"execute\"<\/span>>\n  <\/span>): Promise<\/span>unknown> {<\/span>\n    const<\/span> sessionId = randomId();\n    const<\/span> traceId = randomId();\n\n    return<\/span> await<\/span> context.withValue(\n      sessionIdKey,\n      sessionId,\n      async<\/span> (input<\/span>: <\/span>ActivityExecuteInput<\/span>) <\/span>=><\/span> {<\/span>\n        return<\/span> await<\/span> context.withValue(\n          traceIdKey,\n          traceId,\n          async<\/span> (input<\/span>: <\/span>ActivityExecuteInput<\/span>) <\/span>=><\/span> {<\/span>\n            return<\/span> await<\/span> next(input);\n          }<\/span>,\n          input\n        );\n      }<\/span>,\n      input\n    );\n  }<\/span>\n}<\/span>\n\n\nexport<\/span> class<\/span> OriginalSpanProcessor extends<\/span> SpanProcessor {<\/span>\n  public<\/span> override<\/span> onStart<\/span>(span<\/span>: <\/span>Span<\/span>,<\/span> parentContext<\/span>: <\/span>Context<\/span>): void<\/span> {<\/span>\n    super<\/span>.onStart(span, parentContext);\n\n    const<\/span> sessionId = requestContext.sessionId;\n    const<\/span> traceId = requestContext.traceId;\n\n    if<\/span> (traceId) {<\/span>\n      \n      const<\/span> spanAny = span as<\/span> any<\/span>;\n      if<\/span> (spanAny._spanContext) {<\/span>\n        spanAny._spanContext.traceId = traceId;\n      }<\/span>\n    }<\/span>\n\n    if<\/span> (sessionId) {<\/span>\n      span.setAttribute(\"session.id\"<\/span>, sessionId);\n    }<\/span>\n  }<\/span>\n}<\/span>\n\n<\/pre>\n
\u3053\u3046\u3044\u3063\u305f\u3001\u540c\u4e00\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u3067\u5b9f\u884c\u3055\u308c\u308b\u304c\u3001\u660e\u793a\u7684\u306b\u5f15\u6570\u3068\u3057\u3066\u5024\u306e\u53d7\u3051\u6e21\u3057\u304c\u96e3\u3057\u3044\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306b\u304a\u3044\u3066\u306f\u3001\u540c\u4e00\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u5185\u306e\u3069\u3053\u304b\u3089\u3067\u3082\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u3067\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u5b9f\u88c5\u306b\u4f9d\u5b58\u3057\u306a\u3044AsyncLocalStorage\u304c\u975e\u5e38\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n
\u304a\u308f\u308a\u306b<\/h2>\n
\u4eca\u56de\u306fTypeScript\u306b\u304a\u3044\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u306a\u60c5\u5831\u3092\u6271\u3046\u305f\u3081\u306e\u65b9\u6cd5\u3068\u3057\u3066AsyncLocalStorage\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u30ea\u30af\u30a8\u30b9\u30c8\u30b9\u30b3\u30fc\u30d7\u3060\u3051\u3067\u306a\u304f\u3001\u4efb\u610f\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u306b\u5bfe\u3057\u3066\u30b9\u30b3\u30fc\u30d7\u3092\u8a2d\u5b9a\u3057\u305f\u30c7\u30fc\u30bf\u5171\u6709\u304c\u53ef\u80fd\u3068\u306a\u308b\u5f37\u529b\u306a\u65b9\u6cd5\u306e\u305f\u3081\u3001\u305c\u3072\u7686\u3055\u3093\u3082\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<\/div>\n