/
http.ts
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/
http.ts
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import { getCurrentHub, Hub } from '@sentry/core';
import { EventProcessor, Integration, Span } from '@sentry/types';
import { fill, isMatchingPattern, logger, mergeAndSerializeBaggage, parseSemver } from '@sentry/utils';
import * as http from 'http';
import * as https from 'https';
import { NodeClientOptions } from '../types';
import {
cleanSpanDescription,
extractUrl,
isSentryRequest,
normalizeRequestArgs,
RequestMethod,
RequestMethodArgs,
} from './utils/http';
const NODE_VERSION = parseSemver(process.versions.node);
/**
* The http module integration instruments nodes internal http module. It creates breadcrumbs, transactions for outgoing
* http requests and attaches trace data when tracing is enabled via its `tracing` option.
*/
export class Http implements Integration {
/**
* @inheritDoc
*/
public static id: string = 'Http';
/**
* @inheritDoc
*/
public name: string = Http.id;
/**
* @inheritDoc
*/
private readonly _breadcrumbs: boolean;
/**
* @inheritDoc
*/
private readonly _tracing: boolean;
/**
* @inheritDoc
*/
public constructor(options: { breadcrumbs?: boolean; tracing?: boolean } = {}) {
this._breadcrumbs = typeof options.breadcrumbs === 'undefined' ? true : options.breadcrumbs;
this._tracing = typeof options.tracing === 'undefined' ? false : options.tracing;
}
/**
* @inheritDoc
*/
public setupOnce(
_addGlobalEventProcessor: (callback: EventProcessor) => void,
setupOnceGetCurrentHub: () => Hub,
): void {
// No need to instrument if we don't want to track anything
if (!this._breadcrumbs && !this._tracing) {
return;
}
const clientOptions = setupOnceGetCurrentHub().getClient()?.getOptions() as NodeClientOptions | undefined;
const wrappedHandlerMaker = _createWrappedRequestMethodFactory(
this._breadcrumbs,
this._tracing,
clientOptions?.tracePropagationTargets,
);
// eslint-disable-next-line @typescript-eslint/no-var-requires
const httpModule = require('http');
fill(httpModule, 'get', wrappedHandlerMaker);
fill(httpModule, 'request', wrappedHandlerMaker);
// NOTE: Prior to Node 9, `https` used internals of `http` module, thus we don't patch it.
// If we do, we'd get double breadcrumbs and double spans for `https` calls.
// It has been changed in Node 9, so for all versions equal and above, we patch `https` separately.
if (NODE_VERSION.major && NODE_VERSION.major > 8) {
// eslint-disable-next-line @typescript-eslint/no-var-requires
const httpsModule = require('https');
fill(httpsModule, 'get', wrappedHandlerMaker);
fill(httpsModule, 'request', wrappedHandlerMaker);
}
}
}
// for ease of reading below
type OriginalRequestMethod = RequestMethod;
type WrappedRequestMethod = RequestMethod;
type WrappedRequestMethodFactory = (original: OriginalRequestMethod) => WrappedRequestMethod;
/**
* Function which creates a function which creates wrapped versions of internal `request` and `get` calls within `http`
* and `https` modules. (NB: Not a typo - this is a creator^2!)
*
* @param breadcrumbsEnabled Whether or not to record outgoing requests as breadcrumbs
* @param tracingEnabled Whether or not to record outgoing requests as tracing spans
*
* @returns A function which accepts the exiting handler and returns a wrapped handler
*/
function _createWrappedRequestMethodFactory(
breadcrumbsEnabled: boolean,
tracingEnabled: boolean,
tracePropagationTargets: (string | RegExp)[] | undefined,
): WrappedRequestMethodFactory {
// We're caching results so we dont have to recompute regexp everytime we create a request.
const urlMap: Record<string, boolean> = {};
const shouldAttachTraceData = (url: string): boolean => {
if (tracePropagationTargets === undefined) {
return true;
}
if (urlMap[url]) {
return urlMap[url];
}
urlMap[url] = tracePropagationTargets.some(tracePropagationTarget =>
isMatchingPattern(url, tracePropagationTarget),
);
return urlMap[url];
};
return function wrappedRequestMethodFactory(originalRequestMethod: OriginalRequestMethod): WrappedRequestMethod {
return function wrappedMethod(this: typeof http | typeof https, ...args: RequestMethodArgs): http.ClientRequest {
// eslint-disable-next-line @typescript-eslint/no-this-alias
const httpModule = this;
const requestArgs = normalizeRequestArgs(this, args);
const requestOptions = requestArgs[0];
const requestUrl = extractUrl(requestOptions);
// we don't want to record requests to Sentry as either breadcrumbs or spans, so just use the original method
if (isSentryRequest(requestUrl)) {
return originalRequestMethod.apply(httpModule, requestArgs);
}
let span: Span | undefined;
let parentSpan: Span | undefined;
const scope = getCurrentHub().getScope();
if (scope && tracingEnabled) {
parentSpan = scope.getSpan();
if (parentSpan) {
span = parentSpan.startChild({
description: `${requestOptions.method || 'GET'} ${requestUrl}`,
op: 'http.client',
});
if (shouldAttachTraceData(requestUrl)) {
const sentryTraceHeader = span.toTraceparent();
__DEBUG_BUILD__ &&
logger.log(
`[Tracing] Adding sentry-trace header ${sentryTraceHeader} to outgoing request to "${requestUrl}": `,
);
const baggage = parentSpan.transaction && parentSpan.transaction.getBaggage();
const headerBaggageString = requestOptions.headers && requestOptions.headers.baggage;
requestOptions.headers = {
...requestOptions.headers,
'sentry-trace': sentryTraceHeader,
baggage: mergeAndSerializeBaggage(baggage, headerBaggageString),
};
} else {
__DEBUG_BUILD__ &&
logger.log(
`[Tracing] Not adding sentry-trace header to outgoing request (${requestUrl}) due to mismatching tracePropagationTargets option.`,
);
}
}
}
// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
return originalRequestMethod
.apply(httpModule, requestArgs)
.once('response', function (this: http.ClientRequest, res: http.IncomingMessage): void {
// eslint-disable-next-line @typescript-eslint/no-this-alias
const req = this;
if (breadcrumbsEnabled) {
addRequestBreadcrumb('response', requestUrl, req, res);
}
if (tracingEnabled && span) {
if (res.statusCode) {
span.setHttpStatus(res.statusCode);
}
span.description = cleanSpanDescription(span.description, requestOptions, req);
span.finish();
}
})
.once('error', function (this: http.ClientRequest): void {
// eslint-disable-next-line @typescript-eslint/no-this-alias
const req = this;
if (breadcrumbsEnabled) {
addRequestBreadcrumb('error', requestUrl, req);
}
if (tracingEnabled && span) {
span.setHttpStatus(500);
span.description = cleanSpanDescription(span.description, requestOptions, req);
span.finish();
}
});
};
};
}
/**
* Captures Breadcrumb based on provided request/response pair
*/
function addRequestBreadcrumb(event: string, url: string, req: http.ClientRequest, res?: http.IncomingMessage): void {
if (!getCurrentHub().getIntegration(Http)) {
return;
}
getCurrentHub().addBreadcrumb(
{
category: 'http',
data: {
method: req.method,
status_code: res && res.statusCode,
url,
},
type: 'http',
},
{
event,
request: req,
response: res,
},
);
}