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package.build.esm.instrument.fetch.js.map Maven / Gradle / Ivy

{"version":3,"file":"fetch.js","sources":["../../../src/instrument/fetch.ts"],"sourcesContent":["/* eslint-disable @typescript-eslint/no-explicit-any */\nimport type { HandlerDataFetch } from '@sentry/types';\n\nimport { isError } from '../is';\nimport { addNonEnumerableProperty, fill } from '../object';\nimport { supportsNativeFetch } from '../supports';\nimport { timestampInSeconds } from '../time';\nimport { GLOBAL_OBJ } from '../worldwide';\nimport { addHandler, maybeInstrument, triggerHandlers } from './handlers';\n\ntype FetchResource = string | { toString(): string } | { url: string };\n\n/**\n * Add an instrumentation handler for when a fetch request happens.\n * The handler function is called once when the request starts and once when it ends,\n * which can be identified by checking if it has an `endTimestamp`.\n *\n * Use at your own risk, this might break without changelog notice, only used internally.\n * @hidden\n */\nexport function addFetchInstrumentationHandler(\n  handler: (data: HandlerDataFetch) => void,\n  skipNativeFetchCheck?: boolean,\n): void {\n  const type = 'fetch';\n  addHandler(type, handler);\n  maybeInstrument(type, () => instrumentFetch(undefined, skipNativeFetchCheck));\n}\n\n/**\n * Add an instrumentation handler for long-lived fetch requests, like consuming server-sent events (SSE) via fetch.\n * The handler will resolve the request body and emit the actual `endTimestamp`, so that the\n * span can be updated accordingly.\n *\n * Only used internally\n * @hidden\n */\nexport function addFetchEndInstrumentationHandler(handler: (data: HandlerDataFetch) => void): void {\n  const type = 'fetch-body-resolved';\n  addHandler(type, handler);\n  maybeInstrument(type, () => instrumentFetch(streamHandler));\n}\n\nfunction instrumentFetch(onFetchResolved?: (response: Response) => void, skipNativeFetchCheck: boolean = false): void {\n  if (skipNativeFetchCheck && !supportsNativeFetch()) {\n    return;\n  }\n\n  fill(GLOBAL_OBJ, 'fetch', function (originalFetch: () => void): () => void {\n    return function (...args: any[]): void {\n      const { method, url } = parseFetchArgs(args);\n      const handlerData: HandlerDataFetch = {\n        args,\n        fetchData: {\n          method,\n          url,\n        },\n        startTimestamp: timestampInSeconds() * 1000,\n      };\n\n      // if there is no callback, fetch is instrumented directly\n      if (!onFetchResolved) {\n        triggerHandlers('fetch', {\n          ...handlerData,\n        });\n      }\n\n      // We capture the stack right here and not in the Promise error callback because Safari (and probably other\n      // browsers too) will wipe the stack trace up to this point, only leaving us with this file which is useless.\n\n      // NOTE: If you are a Sentry user, and you are seeing this stack frame,\n      //       it means the error, that was caused by your fetch call did not\n      //       have a stack trace, so the SDK backfilled the stack trace so\n      //       you can see which fetch call failed.\n      const virtualStackTrace = new Error().stack;\n\n      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access\n      return originalFetch.apply(GLOBAL_OBJ, args).then(\n        async (response: Response) => {\n          if (onFetchResolved) {\n            onFetchResolved(response);\n          } else {\n            triggerHandlers('fetch', {\n              ...handlerData,\n              endTimestamp: timestampInSeconds() * 1000,\n              response,\n            });\n          }\n\n          return response;\n        },\n        (error: Error) => {\n          triggerHandlers('fetch', {\n            ...handlerData,\n            endTimestamp: timestampInSeconds() * 1000,\n            error,\n          });\n\n          if (isError(error) && error.stack === undefined) {\n            // NOTE: If you are a Sentry user, and you are seeing this stack frame,\n            //       it means the error, that was caused by your fetch call did not\n            //       have a stack trace, so the SDK backfilled the stack trace so\n            //       you can see which fetch call failed.\n            error.stack = virtualStackTrace;\n            addNonEnumerableProperty(error, 'framesToPop', 1);\n          }\n\n          // NOTE: If you are a Sentry user, and you are seeing this stack frame,\n          //       it means the sentry.javascript SDK caught an error invoking your application code.\n          //       This is expected behavior and NOT indicative of a bug with sentry.javascript.\n          throw error;\n        },\n      );\n    };\n  });\n}\n\nasync function resolveResponse(res: Response | undefined, onFinishedResolving: () => void): Promise {\n  if (res && res.body) {\n    const body = res.body;\n    const responseReader = body.getReader();\n\n    // Define a maximum duration after which we just cancel\n    const maxFetchDurationTimeout = setTimeout(\n      () => {\n        body.cancel().then(null, () => {\n          // noop\n        });\n      },\n      90 * 1000, // 90s\n    );\n\n    let readingActive = true;\n    while (readingActive) {\n      let chunkTimeout;\n      try {\n        // abort reading if read op takes more than 5s\n        chunkTimeout = setTimeout(() => {\n          body.cancel().then(null, () => {\n            // noop on error\n          });\n        }, 5000);\n\n        // This .read() call will reject/throw when we abort due to timeouts through `body.cancel()`\n        const { done } = await responseReader.read();\n\n        clearTimeout(chunkTimeout);\n\n        if (done) {\n          onFinishedResolving();\n          readingActive = false;\n        }\n      } catch (error) {\n        readingActive = false;\n      } finally {\n        clearTimeout(chunkTimeout);\n      }\n    }\n\n    clearTimeout(maxFetchDurationTimeout);\n\n    responseReader.releaseLock();\n    body.cancel().then(null, () => {\n      // noop on error\n    });\n  }\n}\n\nfunction streamHandler(response: Response): void {\n  // clone response for awaiting stream\n  let clonedResponseForResolving: Response;\n  try {\n    clonedResponseForResolving = response.clone();\n  } catch {\n    return;\n  }\n\n  // eslint-disable-next-line @typescript-eslint/no-floating-promises\n  resolveResponse(clonedResponseForResolving, () => {\n    triggerHandlers('fetch-body-resolved', {\n      endTimestamp: timestampInSeconds() * 1000,\n      response,\n    });\n  });\n}\n\nfunction hasProp(obj: unknown, prop: T): obj is Record {\n  return !!obj && typeof obj === 'object' && !!(obj as Record)[prop];\n}\n\nfunction getUrlFromResource(resource: FetchResource): string {\n  if (typeof resource === 'string') {\n    return resource;\n  }\n\n  if (!resource) {\n    return '';\n  }\n\n  if (hasProp(resource, 'url')) {\n    return resource.url;\n  }\n\n  if (resource.toString) {\n    return resource.toString();\n  }\n\n  return '';\n}\n\n/**\n * Parses the fetch arguments to find the used Http method and the url of the request.\n * Exported for tests only.\n */\nexport function parseFetchArgs(fetchArgs: unknown[]): { method: string; url: string } {\n  if (fetchArgs.length === 0) {\n    return { method: 'GET', url: '' };\n  }\n\n  if (fetchArgs.length === 2) {\n    const [url, options] = fetchArgs as [FetchResource, object];\n\n    return {\n      url: getUrlFromResource(url),\n      method: hasProp(options, 'method') ? String(options.method).toUpperCase() : 'GET',\n    };\n  }\n\n  const arg = fetchArgs[0];\n  return {\n    url: getUrlFromResource(arg as FetchResource),\n    method: hasProp(arg, 'method') ? 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