feat: Long Tasks instrumentation (#757)

Co-authored-by: Valentin Marchaud <contact@vmarchaud.fr>

.github/component_owners.yml

@@ -44,6 +44,9 @@ components:
     - rauno56
   plugins/web/opentelemetry-instrumentation-document-load:
     - obecny
+  plugins/web/opentelemetry-instrumentation-long-task:
+    - mhennoch
+    - t2t2
   plugins/web/opentelemetry-instrumentation-user-interaction:
     - obecny
   propagators/opentelemetry-propagator-aws-xray:

plugins/web/opentelemetry-instrumentation-long-task/.eslintignore

@@ -0,0 +1 @@
+build

plugins/web/opentelemetry-instrumentation-long-task/.eslintrc.js

@@ -0,0 +1,9 @@
+module.exports = {
+    "env": {
+        "mocha": true,
+        "commonjs": true,
+        "browser": true,
+        "jquery": true
+    },
+    ...require('../../../eslint.config.js')
+}

plugins/web/opentelemetry-instrumentation-long-task/README.md

@@ -0,0 +1,59 @@
+# OpenTelemetry Long Task Instrumentation for web
+
+[![NPM Published Version][npm-img]][npm-url]
+[![dependencies][dependencies-image]][dependencies-url]
+[![devDependencies][devDependencies-image]][devDependencies-url]
+[![Apache License][license-image]][license-image]
+
+This instrumentation creates spans from tasks that take more than 50 milliseconds using the [Long Task API][mdn-long-task].
+All of the data reported via [`PerformanceLongTaskTiming`][mdn-performance-long-task-timing] is included as span attributes.
+
+Compatible with OpenTelemetry JS API and SDK `1.0+`.
+
+## Installation
+
+```bash
+npm install --save @opentelemetry/instrumentation-long-task
+```
+
+## Usage
+
+```js
+import { ConsoleSpanExporter, SimpleSpanProcessor } from '@opentelemetry/sdk-trace-base';
+import { WebTracerProvider } from '@opentelemetry/sdk-trace-web';
+import { LongTaskInstrumentation } from '@opentelemetry/instrumentation-long-task';
+import { registerInstrumentations } from '@opentelemetry/instrumentation';
+
+const provider = new WebTracerProvider();
+
+provider.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
+
+registerInstrumentations({
+  tracerProvider: provider,
+  instrumentations: [
+    new LongTaskInstrumentation(),
+  ],
+});
+```
+
+## Useful links
+
+- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
+- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
+- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]
+
+## License
+
+Apache 2.0 - See [LICENSE][license-url] for more information.
+
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
+[license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
+[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
+[dependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js-contrib.svg?path=plugins%2Fweb%2Fopentelemetry-instrumentation-long-task
+[dependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js-contrib?path=plugins%2Fweb%2Fopentelemetry-instrumentation-long-task
+[devDependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js-contrib.svg?path=plugins%2Fweb%2Fopentelemetry-instrumentation-long-task&type=dev
+[devDependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js-contrib?path=plugins%2Fweb%2Fopentelemetry-instrumentation-long-task&type=dev
+[npm-url]: https://www.npmjs.com/package/@opentelemetry/instrumentation-long-task
+[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Finstrumentation-long-task.svg
+[mdn-long-task]: https://developer.mozilla.org/en-US/docs/Web/API/Long_Tasks_API
+[mdn-performance-long-task-timing]: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceLongTaskTiming

plugins/web/opentelemetry-instrumentation-long-task/karma.conf.js

@@ -0,0 +1,25 @@
+/*!
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const karmaWebpackConfig = require('../../../karma.webpack');
+const karmaBaseConfig = require('../../../karma.base');
+
+module.exports = (config) => {
+  config.set(Object.assign({}, karmaBaseConfig, {
+    frameworks: karmaBaseConfig.frameworks.concat(['jquery-1.8.3']),
+    webpack: karmaWebpackConfig,
+  }))
+};

plugins/web/opentelemetry-instrumentation-long-task/package.json

@@ -0,0 +1,91 @@
+{
+  "name": "@opentelemetry/instrumentation-long-task",
+  "version": "0.27.0",
+  "description": "OpenTelemetry long task API automatic instrumentation package.",
+  "main": "build/src/index.js",
+  "module": "build/esm/index.js",
+  "types": "build/src/index.d.ts",
+  "repository": "open-telemetry/opentelemetry-js-contrib",
+  "scripts": {
+    "lint": "eslint . --ext .ts",
+    "lint:fix": "eslint . --ext .ts --fix",
+    "clean": "tsc --build --clean tsconfig.json tsconfig.esm.json",
+    "codecov:browser": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../",
+    "precompile": "tsc --version && lerna run version --scope @opentelemetry/instrumentation-user-interaction --include-filtered-dependencies",
+    "prewatch": "npm run precompile",
+    "version:update": "node ../../../scripts/version-update.js",
+    "compile": "npm run version:update && tsc --build tsconfig.json tsconfig.esm.json",
+    "prepare": "npm run compile",
+    "tdd": "karma start",
+    "test:browser": "nyc karma start --single-run",
+    "watch": "tsc --build --watch tsconfig.json tsconfig.esm.json"
+  },
+  "keywords": [
+    "opentelemetry",
+    "web",
+    "tracing",
+    "profiling",
+    "metrics",
+    "stats"
+  ],
+  "author": "OpenTelemetry Authors",
+  "license": "Apache-2.0",
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "files": [
+    "build/esm/**/*.js",
+    "build/esm/**/*.map",
+    "build/esm/**/*.d.ts",
+    "build/src/**/*.js",
+    "build/src/**/*.map",
+    "build/src/**/*.d.ts",
+    "doc",
+    "LICENSE",
+    "README.md"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "devDependencies": {
+    "@babel/core": "7.15.0",
+    "@opentelemetry/api": "1.0.2",
+    "@opentelemetry/sdk-trace-base": "1.0.1",
+    "@types/jquery": "3.5.6",
+    "@types/mocha": "7.0.2",
+    "@types/node": "14.17.9",
+    "@types/sinon": "10.0.2",
+    "@types/webpack-env": "1.16.2",
+    "babel-loader": "8.2.2",
+    "codecov": "3.8.3",
+    "gts": "3.1.0",
+    "istanbul-instrumenter-loader": "3.0.1",
+    "karma": "5.2.3",
+    "karma-chrome-launcher": "3.1.0",
+    "karma-coverage-istanbul-reporter": "3.0.3",
+    "karma-jquery": "0.2.4",
+    "karma-mocha": "2.0.1",
+    "karma-spec-reporter": "0.0.32",
+    "karma-webpack": "4.0.2",
+    "mocha": "7.2.0",
+    "nyc": "15.1.0",
+    "rimraf": "3.0.2",
+    "sinon": "11.1.2",
+    "ts-loader": "8.3.0",
+    "ts-mocha": "8.0.0",
+    "typescript": "4.3.5",
+    "webpack": "4.46.0",
+    "webpack-cli": "4.7.2",
+    "webpack-merge": "5.8.0",
+    "zone.js": "0.11.4"
+  },
+  "dependencies": {
+    "@opentelemetry/core": "^1.0.0",
+    "@opentelemetry/instrumentation": "^0.27.0",
+    "@opentelemetry/sdk-trace-web": "^1.0.0"
+  },
+  "peerDependencies": {
+    "@opentelemetry/api": "^1.0.2"
+  },
+  "sideEffects": false
+}

plugins/web/opentelemetry-instrumentation-long-task/src/index.ts

@@ -0,0 +1,17 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export * from './instrumentation';

plugins/web/opentelemetry-instrumentation-long-task/src/instrumentation.ts

@@ -0,0 +1,135 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { hrTime } from '@opentelemetry/core';
+import {
+  InstrumentationBase,
+  InstrumentationConfig,
+} from '@opentelemetry/instrumentation';
+import { VERSION } from './version';
+
+// Currently missing in typescript DOM definitions
+interface PerformanceLongTaskTiming extends PerformanceEntry {
+  attribution: TaskAttributionTiming[];
+}
+
+interface TaskAttributionTiming extends PerformanceEntry {
+  containerType: string;
+  containerSrc: string;
+  containerId: string;
+  containerName: string;
+}
+
+const LONGTASK_PERFORMANCE_TYPE = 'longtask';
+
+export class LongTaskInstrumentation extends InstrumentationBase {
+  readonly component: string = 'long-task';
+  readonly version: string = VERSION;
+  moduleName = this.component;
+
+  private _observer?: PerformanceObserver;
+
+  /**
+   *
+   * @param config
+   */
+  constructor(config: InstrumentationConfig = {}) {
+    super('@opentelemetry/instrumentation-long-task', VERSION, config);
+  }
+
+  init() {}
+
+  private isSupported() {
+    if (
+      typeof PerformanceObserver === 'undefined' ||
+      !PerformanceObserver.supportedEntryTypes
+    ) {
+      return false;
+    }
+
+    return PerformanceObserver.supportedEntryTypes.includes(
+      LONGTASK_PERFORMANCE_TYPE
+    );
+  }
+
+  private _createSpanFromEntry(entry: PerformanceLongTaskTiming) {
+    const span = this.tracer.startSpan(LONGTASK_PERFORMANCE_TYPE, {
+      startTime: hrTime(entry.startTime),
+    });
+    span.setAttribute('component', this.component);
+    span.setAttribute('longtask.name', entry.name);
+    span.setAttribute('longtask.entry_type', entry.entryType);
+    span.setAttribute('longtask.duration', entry.duration);
+
+    if (Array.isArray(entry.attribution)) {
+      entry.attribution.forEach((attribution, index) => {
+        const prefix =
+          entry.attribution.length > 1
+            ? `longtask.attribution[${index}]`
+            : 'longtask.attribution';
+        span.setAttribute(`${prefix}.name`, attribution.name);
+        span.setAttribute(`${prefix}.entry_type`, attribution.entryType);
+        span.setAttribute(`${prefix}.start_time`, attribution.startTime);
+        span.setAttribute(`${prefix}.duration`, attribution.duration);
+        span.setAttribute(
+          `${prefix}.container_type`,
+          attribution.containerType
+        );
+        span.setAttribute(`${prefix}.container_src`, attribution.containerSrc);
+        span.setAttribute(`${prefix}.container_id`, attribution.containerId);
+        span.setAttribute(
+          `${prefix}.container_name`,
+          attribution.containerName
+        );
+      });
+    }
+
+    span.end(hrTime(entry.startTime + entry.duration));
+  }
+
+  override enable() {
+    if (!this.isSupported()) {
+      this._diag.debug('Environment not supported');
+      return;
+    }
+
+    if (this._observer) {
+      // Already enabled
+      return;
+    }
+
+    this._observer = new PerformanceObserver(list => {
+      list
+        .getEntries()
+        .forEach(entry =>
+          this._createSpanFromEntry(entry as PerformanceLongTaskTiming)
+        );
+    });
+    this._observer.observe({
+      type: LONGTASK_PERFORMANCE_TYPE,
+      buffered: true,
+    });
+  }
+
+  override disable() {
+    if (!this._observer) {
+      return;
+    }
+
+    this._observer.disconnect();
+    this._observer = undefined;
+  }
+}