mirror of
https://github.com/denoland/deno.git
synced 2024-12-11 10:07:54 -05:00
feat: Instrument Deno.serve (#26964)
Add basic trace to Deno.serve. Also updates a bit of the testing infra to make it easier to deal with.
This commit is contained in:
parent
3f0e7c6dde
commit
f64aa29099
6 changed files with 254 additions and 152 deletions
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@ -34,8 +34,11 @@ const {
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ObjectHasOwn,
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ObjectPrototypeIsPrototypeOf,
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PromisePrototypeCatch,
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SafePromisePrototypeFinally,
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PromisePrototypeThen,
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String,
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StringPrototypeIncludes,
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StringPrototypeSlice,
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Symbol,
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TypeError,
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TypedArrayPrototypeGetSymbolToStringTag,
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@ -513,11 +516,7 @@ function fastSyncResponseOrStream(
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* This function returns a promise that will only reject in the case of abnormal exit.
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*/
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function mapToCallback(context, callback, onError) {
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return async function (req) {
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const asyncContext = getAsyncContext();
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setAsyncContext(context.asyncContext);
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try {
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let mapped = async function (req, span) {
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// Get the response from the user-provided callback. If that fails, use onError. If that fails, return a fallback
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// 500 error.
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let innerRequest;
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@ -526,6 +525,20 @@ function mapToCallback(context, callback, onError) {
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innerRequest = new InnerRequest(req, context);
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const request = fromInnerRequest(innerRequest, "immutable");
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innerRequest.request = request;
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if (span) {
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span.updateName(request.method);
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span.setAttribute("http.request.method", request.method);
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const url = new URL(request.url);
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span.setAttribute("url.full", request.url);
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span.setAttribute(
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"url.scheme",
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StringPrototypeSlice(url.protocol, 0, -1),
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);
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span.setAttribute("url.path", url.pathname);
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span.setAttribute("url.query", StringPrototypeSlice(url.search, 1));
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}
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response = await callback(
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request,
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new ServeHandlerInfo(innerRequest),
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@ -563,6 +576,14 @@ function mapToCallback(context, callback, onError) {
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response = internalServerError();
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}
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}
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if (span) {
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span.setAttribute(
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"http.response.status_code",
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String(response.status),
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);
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}
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const inner = toInnerResponse(response);
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if (innerRequest?.[_upgraded]) {
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// We're done here as the connection has been upgraded during the callback and no longer requires servicing.
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@ -594,10 +615,40 @@ function mapToCallback(context, callback, onError) {
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}
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fastSyncResponseOrStream(req, inner.body, status, innerRequest);
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};
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if (internals.telemetry.tracingEnabled) {
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const { Span, enterSpan, endSpan } = internals.telemetry;
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const origMapped = mapped;
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mapped = function (req, _span) {
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const oldCtx = getAsyncContext();
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setAsyncContext(context.asyncContext);
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const span = new Span("deno.serve");
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try {
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enterSpan(span);
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return SafePromisePrototypeFinally(
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origMapped(req, span),
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() => endSpan(span),
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);
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} finally {
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setAsyncContext(asyncContext);
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// equiv to exitSpan.
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setAsyncContext(oldCtx);
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}
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};
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} else {
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const origMapped = mapped;
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mapped = function (req, span) {
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const oldCtx = getAsyncContext();
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setAsyncContext(context.asyncContext);
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try {
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return origMapped(req, span);
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} finally {
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setAsyncContext(oldCtx);
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}
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};
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}
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return mapped;
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}
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type RawHandler = (
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@ -795,7 +846,7 @@ function serveHttpOn(context, addr, callback) {
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// Attempt to pull as many requests out of the queue as possible before awaiting. This API is
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// a synchronous, non-blocking API that returns u32::MAX if anything goes wrong.
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while ((req = op_http_try_wait(rid)) !== null) {
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PromisePrototypeCatch(callback(req), promiseErrorHandler);
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PromisePrototypeCatch(callback(req, undefined), promiseErrorHandler);
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}
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currentPromise = op_http_wait(rid);
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if (!ref) {
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@ -815,7 +866,7 @@ function serveHttpOn(context, addr, callback) {
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if (req === null) {
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break;
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}
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PromisePrototypeCatch(callback(req), promiseErrorHandler);
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PromisePrototypeCatch(callback(req, undefined), promiseErrorHandler);
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}
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try {
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@ -1,6 +1,6 @@
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { core, primordials } from "ext:core/mod.js";
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import { core, internals, primordials } from "ext:core/mod.js";
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import {
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op_crypto_get_random_values,
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op_otel_instrumentation_scope_create_and_enter,
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@ -32,11 +32,9 @@ const {
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ObjectDefineProperty,
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WeakRefPrototypeDeref,
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String,
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StringPrototypePadStart,
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ObjectPrototypeIsPrototypeOf,
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DataView,
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DataViewPrototypeSetUint32,
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SafeWeakRef,
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TypedArrayPrototypeGetBuffer,
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} = primordials;
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const { AsyncVariable, setAsyncContext } = core;
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@ -404,7 +402,7 @@ export class Span {
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span.#asyncContext = NO_ASYNC_CONTEXT;
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};
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exitSpan = (span: Span) => {
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endSpan = (span: Span) => {
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const endTime = now();
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submit(
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span.#spanId,
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@ -449,39 +447,11 @@ export class Span {
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const currentSpan: Span | {
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spanContext(): { traceId: string; spanId: string };
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} = CURRENT.get()?.getValue(SPAN_KEY);
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if (!currentSpan) {
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const buffer = new Uint8Array(TRACE_ID_BYTES + SPAN_ID_BYTES);
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if (currentSpan) {
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if (DETERMINISTIC) {
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DataViewPrototypeSetUint32(
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new DataView(TypedArrayPrototypeGetBuffer(buffer)),
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TRACE_ID_BYTES - 4,
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COUNTER,
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true,
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);
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COUNTER += 1;
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DataViewPrototypeSetUint32(
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new DataView(TypedArrayPrototypeGetBuffer(buffer)),
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TRACE_ID_BYTES + SPAN_ID_BYTES - 4,
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COUNTER,
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true,
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);
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COUNTER += 1;
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} else {
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op_crypto_get_random_values(buffer);
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}
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this.#traceId = TypedArrayPrototypeSubarray(buffer, 0, TRACE_ID_BYTES);
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this.#spanId = TypedArrayPrototypeSubarray(buffer, TRACE_ID_BYTES);
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this.#spanId = StringPrototypePadStart(String(COUNTER++), 16, "0");
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} else {
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this.#spanId = new Uint8Array(SPAN_ID_BYTES);
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if (DETERMINISTIC) {
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DataViewPrototypeSetUint32(
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new DataView(TypedArrayPrototypeGetBuffer(this.#spanId)),
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SPAN_ID_BYTES - 4,
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COUNTER,
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true,
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);
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COUNTER += 1;
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} else {
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op_crypto_get_random_values(this.#spanId);
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}
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// deno-lint-ignore prefer-primordials
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@ -493,6 +463,16 @@ export class Span {
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this.#traceId = context.traceId;
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this.#parentSpanId = context.spanId;
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}
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} else {
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if (DETERMINISTIC) {
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this.#traceId = StringPrototypePadStart(String(COUNTER++), 32, "0");
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this.#spanId = StringPrototypePadStart(String(COUNTER++), 16, "0");
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} else {
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const buffer = new Uint8Array(TRACE_ID_BYTES + SPAN_ID_BYTES);
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op_crypto_get_random_values(buffer);
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this.#traceId = TypedArrayPrototypeSubarray(buffer, 0, TRACE_ID_BYTES);
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this.#spanId = TypedArrayPrototypeSubarray(buffer, TRACE_ID_BYTES);
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}
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}
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}
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@ -717,4 +697,16 @@ export function bootstrap(
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}
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}
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export const telemetry = { SpanExporter, ContextManager };
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export const telemetry = {
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SpanExporter,
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ContextManager,
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};
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internals.telemetry = {
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Span,
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enterSpan,
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exitSpan,
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endSpan,
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get tracingEnabled() {
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return TRACING_ENABLED;
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},
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};
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@ -835,9 +835,9 @@ fn op_otel_span_set_dropped(
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#[smi] dropped_events_count: u32,
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) {
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if let Some(temporary_span) = state.try_borrow_mut::<TemporarySpan>() {
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temporary_span.0.dropped_attributes_count = dropped_attributes_count;
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temporary_span.0.links.dropped_count = dropped_links_count;
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temporary_span.0.events.dropped_count = dropped_events_count;
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temporary_span.0.dropped_attributes_count += dropped_attributes_count;
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temporary_span.0.links.dropped_count += dropped_links_count;
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temporary_span.0.events.dropped_count += dropped_events_count;
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}
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}
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@ -2,30 +2,18 @@
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"steps": [
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{
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"args": "run -A main.ts basic.ts",
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"envs": {
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"DENO_UNSTABLE_OTEL_DETERMINISTIC": "1"
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},
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"output": "basic.out"
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},
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{
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"args": "run -A main.ts natural_exit.ts",
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"envs": {
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"DENO_UNSTABLE_OTEL_DETERMINISTIC": "1"
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},
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"output": "natural_exit.out"
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},
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{
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"args": "run -A main.ts deno_dot_exit.ts",
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"envs": {
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"DENO_UNSTABLE_OTEL_DETERMINISTIC": "1"
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},
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"output": "deno_dot_exit.out"
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},
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{
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"args": "run -A main.ts uncaught.ts",
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"envs": {
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"DENO_UNSTABLE_OTEL_DETERMINISTIC": "1"
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},
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"output": "uncaught.out"
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}
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]
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@ -1,12 +1,70 @@
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{
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"spans": [
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{
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"traceId": "10000000000000000000000000000002",
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"spanId": "1000000000000003",
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"traceId": "00000000000000000000000000000001",
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"spanId": "0000000000000002",
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"traceState": "",
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"parentSpanId": "1000000000000001",
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"parentSpanId": "",
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"flags": 1,
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"name": "inner span",
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"name": "GET",
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"kind": 1,
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"startTimeUnixNano": "[WILDCARD]",
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"endTimeUnixNano": "[WILDCARD]",
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"attributes": [
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{
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"key": "http.request.method",
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"value": {
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"stringValue": "GET"
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}
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},
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{
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"key": "url.full",
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"value": {
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"stringValue": "http://localhost:[WILDCARD]/"
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}
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},
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{
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"key": "url.scheme",
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"value": {
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"stringValue": "http"
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}
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},
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{
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"key": "url.path",
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"value": {
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"stringValue": "/"
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}
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},
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{
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"key": "url.query",
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"value": {
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"stringValue": ""
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}
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},
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{
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"key": "http.response.status_code",
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"value": {
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"stringValue": "200"
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}
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}
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],
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"droppedAttributesCount": 0,
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"events": [],
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"droppedEventsCount": 0,
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"links": [],
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"droppedLinksCount": 0,
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"status": {
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"message": "",
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"code": 0
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}
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},
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{
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"traceId": "00000000000000000000000000000001",
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"spanId": "1000000000000001",
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"traceState": "",
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"parentSpanId": "0000000000000002",
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"flags": 1,
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"name": "outer span",
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"kind": 1,
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"startTimeUnixNano": "[WILDCARD]",
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"endTimeUnixNano": "[WILDCARD]",
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@ -22,12 +80,12 @@
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}
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},
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{
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"traceId": "10000000000000000000000000000002",
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"spanId": "1000000000000001",
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"traceId": "00000000000000000000000000000001",
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"spanId": "1000000000000002",
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"traceState": "",
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"parentSpanId": "",
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"parentSpanId": "1000000000000001",
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"flags": 1,
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"name": "outer span",
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"name": "inner span",
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"kind": 1,
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"startTimeUnixNano": "[WILDCARD]",
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"endTimeUnixNano": "[WILDCARD]",
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@ -55,8 +113,8 @@
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"attributes": [],
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"droppedAttributesCount": 0,
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"flags": 1,
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"traceId": "10000000000000000000000000000002",
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"spanId": "1000000000000003"
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"traceId": "00000000000000000000000000000001",
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"spanId": "1000000000000002"
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},
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{
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"timeUnixNano": "0",
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@ -69,8 +127,8 @@
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"attributes": [],
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"droppedAttributesCount": 0,
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"flags": 1,
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"traceId": "10000000000000000000000000000002",
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"spanId": "1000000000000003"
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"traceId": "00000000000000000000000000000001",
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"spanId": "1000000000000002"
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}
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]
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}
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@ -12,26 +12,39 @@ const server = Deno.serve(
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const command = new Deno.Command(Deno.execPath(), {
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args: ["run", "-A", "-q", "--unstable-otel", Deno.args[0]],
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env: {
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DENO_UNSTABLE_OTEL_DETERMINISTIC: "1",
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OTEL_EXPORTER_OTLP_PROTOCOL: "http/json",
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OTEL_EXPORTER_OTLP_ENDPOINT: `http://localhost:${port}`,
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},
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stdout: "null",
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});
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const child = command.spawn();
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child.output().then(() => {
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server.shutdown();
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child.output()
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.then(() => server.shutdown())
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.then(() => {
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data.logs.sort((a, b) =>
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Number(
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BigInt(a.observedTimeUnixNano) - BigInt(b.observedTimeUnixNano),
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)
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);
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data.spans.sort((a, b) =>
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Number(BigInt(`0x${a.spanId}`) - BigInt(`0x${b.spanId}`))
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);
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console.log(JSON.stringify(data, null, 2));
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});
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},
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async handler(req) {
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const body = await req.json();
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if (body.resourceLogs) {
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data.logs.push(...body.resourceLogs[0].scopeLogs[0].logRecords);
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}
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if (body.resourceSpans) {
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data.spans.push(...body.resourceSpans[0].scopeSpans[0].spans);
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}
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body.resourceLogs?.forEach((rLogs) => {
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rLogs.scopeLogs.forEach((sLogs) => {
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data.logs.push(...sLogs.logRecords);
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});
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});
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body.resourceSpans?.forEach((rSpans) => {
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rSpans.scopeSpans.forEach((sSpans) => {
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data.spans.push(...sSpans.spans);
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});
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});
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return Response.json({ partialSuccess: {} }, { status: 200 });
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},
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},
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