diff --git a/.gitignore b/.gitignore index 7b0ff1e7e..558cddceb 100644 --- a/.gitignore +++ b/.gitignore @@ -18,5 +18,25 @@ bin # Vim .swp +#VScode +.vscode/ + # Other TAGS + +# nodejs +node_modules/ +npm-debug.log +.nyc_output/ +build/ + +#backup files +*-- +*_backup + +#log files +*.log + +#istanbul files +coverage/ + diff --git a/.npmignore b/.npmignore new file mode 100644 index 000000000..9505ba945 --- /dev/null +++ b/.npmignore @@ -0,0 +1,4 @@ +/bin +/coverage +/doc +/test diff --git a/AUTHORS b/AUTHORS index e068e731e..3aa6d434a 100644 --- a/AUTHORS +++ b/AUTHORS @@ -1 +1,6 @@ -Google Inc. \ No newline at end of file +#CESAR's team (www.cesar.org.br): +Fabio Silva +Djonathas Cardoso +Luana Martins dos Santos +Eduardo Emery +Eldrey Seolin Galindo diff --git a/README.md b/README.md index b2808a59d..1983dec59 100644 --- a/README.md +++ b/README.md @@ -1,13 +1,17 @@ -# OpenCensus - A stats collection and distributed tracing framework +# OpenCensus Core Node.js [![Gitter chat][gitter-image]][gitter-url] -OpenCensus is a toolkit for collecting application performance and behavior data. It currently -includes 3 apis: stats, tracing and tags. +OpenCensus for Node.js is an implementation of OpenCensus, a toolkit for collecting application performance and behavior monitoring data. The library is in alpha stage and the API is subject to change. -Please join [gitter](https://gitter.im/census-instrumentation/Lobby) for help or feedback on this -project. +Please join [gitter](https://gitter.im/census-instrumentation/Lobby) for help or feedback on this project. + +## Useful links +- For more information on OpenCensus, visit: +- To checkout the OpenCensus for Node.js, visit: +- For help or feedback on this project, join us on [gitter](https://gitter.im/census-instrumentation/Lobby) [gitter-image]: https://badges.gitter.im/census-instrumentation/lobby.svg [gitter-url]: https://gitter.im/census-instrumentation/lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge + diff --git a/docs/design/opencensus.nodejs.first.design.pdf b/docs/design/opencensus.nodejs.first.design.pdf new file mode 100644 index 000000000..c2117c5c3 Binary files /dev/null and b/docs/design/opencensus.nodejs.first.design.pdf differ diff --git a/lerna.json b/lerna.json new 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"census-instrumentation/opencensus-node", + "scripts": { + "postinstall": "npm run bootstrap;npm run build;", + "build": "node_modules/.bin/lerna run build", + "test": "node_modules/.bin/lerna run test", + "bootstrap": "node_modules/.bin/lerna bootstrap", + "bump": "node_modules/.bin/lerna publish" + }, + "keywords": [ + "opencensus", + "nodejs", + "tracing", + "profiling" + ], + "author": "Google Inc.", + "license": "Apache-2.0", + "engines": { + "node": ">=6.0" + }, + "files": [ + "build/src/**/*.js", + "build/src/**/*.d.ts", + "doc", + "CHANGELOG.md", + "LICENSE", + "README.md" + ], + "publishConfig": { + "access": "public" + }, + "devDependencies": { + "@types/node": "^9.4.7", + "lerna": "^2.10.1", + "typescript": "^2.7.2" + } +} diff --git a/packages/opencensus-core/.npmignore b/packages/opencensus-core/.npmignore new file mode 100644 index 000000000..9505ba945 --- /dev/null +++ b/packages/opencensus-core/.npmignore @@ -0,0 +1,4 @@ +/bin +/coverage +/doc +/test diff --git a/packages/opencensus-core/AUTHORS b/packages/opencensus-core/AUTHORS new file mode 100644 index 000000000..3aa6d434a --- /dev/null +++ b/packages/opencensus-core/AUTHORS @@ -0,0 +1,6 @@ +#CESAR's team (www.cesar.org.br): +Fabio Silva +Djonathas Cardoso +Luana Martins dos Santos +Eduardo Emery +Eldrey Seolin Galindo diff --git a/packages/opencensus-core/LICENSE b/packages/opencensus-core/LICENSE new file mode 100644 index 000000000..d64569567 --- /dev/null +++ b/packages/opencensus-core/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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OpenCensus Core Node.js +[![Gitter chat][gitter-image]][gitter-url] + +OpenCensus for Node.js is an implementation of OpenCensus, a toolkit for collecting application performance and behavior monitoring data. + +The library is in alpha stage and the API is subject to change. + +Please join [gitter](https://gitter.im/census-instrumentation/Lobby) for help or feedback on this project. + +## Useful links +- For more information on OpenCensus, visit: +- To checkout the OpenCensus for Node.js, visit: +- For help or feedback on this project, join us on [gitter](https://gitter.im/census-instrumentation/Lobby) + +[gitter-image]: https://badges.gitter.im/census-instrumentation/lobby.svg +[gitter-url]: https://gitter.im/census-instrumentation/lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge diff --git a/packages/opencensus-core/package-lock.json b/packages/opencensus-core/package-lock.json new file mode 100644 index 000000000..91a86ae4c --- /dev/null +++ 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compile", + "pretest": "npm run compile", + "posttest": "npm run check" + }, + "keywords": [ + "opencensus", + "nodejs", + "tracing", + "profiling" + ], + "author": "Google Inc.", + "license": "Apache-2.0", + "engines": { + "node": ">=6.0" + }, + "files": [ + "build/src/**/*.js", + "build/src/**/*.d.ts", + "doc", + "CHANGELOG.md", + "LICENSE", + "README.md" + ], + "publishConfig": { + "access": "public" + }, + "devDependencies": { + "@types/continuation-local-storage": "^3.2.1", + "@types/debug": "0.0.30", + "@types/mocha": "^2.2.48", + "@types/node": "^9.4.7", + "@types/semver": "^5.5.0", + "@types/shimmer": "^1.0.1", + "@types/uuid": "^3.4.3", + "gts": "^0.5.4", + "mocha": "^5.0.4", + "ncp": "^2.0.0", + "ts-node": "^4.0.0", + "typescript": "~2.6.1", + "nyc": "11.6.0" + }, + "dependencies": { + "continuation-local-storage": "^3.2.1", + "debug": "^3.1.0", + "intercept-stdout": "^0.1.2", + "log-driver": "^1.2.7", + "semver": "^5.5.0", + "shimmer": "^1.2.0", + "uuid": "^3.2.1" + } +} diff --git a/packages/opencensus-core/scripts/compile.ts b/packages/opencensus-core/scripts/compile.ts new file mode 100644 index 000000000..da139552f --- /dev/null +++ b/packages/opencensus-core/scripts/compile.ts @@ -0,0 +1,22 @@ +import * as path from 'path'; +import { forkP } from './utils'; +import * as ts from 'typescript'; +import * as semver from 'semver'; + +export interface CompileOptions { + strict: boolean; + languageLevel: string; +} + +export async function compile(options: CompileOptions) { + let { strict, languageLevel } = options; + if (languageLevel === 'auto') { + languageLevel = semver.satisfies(process.version, '>=7.5') ? 'es2017' : 'es2015'; + } + await forkP(`node_modules/.bin/tsc`, [ + '-p', + strict ? '.' : './tsconfig.full.json', + '--target', + languageLevel + ]); +} diff --git a/packages/opencensus-core/scripts/tsconfig.json b/packages/opencensus-core/scripts/tsconfig.json new file mode 100644 index 000000000..e4b33561a --- /dev/null +++ b/packages/opencensus-core/scripts/tsconfig.json @@ -0,0 +1,10 @@ +{ + "extends": "../node_modules/gts/tsconfig-google.json", + "compilerOptions": { + "rootDir": "..", + "outDir": "../build" + }, + "include": [ + "*.ts" + ] +} \ No newline at end of file diff --git a/packages/opencensus-core/src/common/console-logger.ts b/packages/opencensus-core/src/common/console-logger.ts new file mode 100644 index 000000000..decd19bfb --- /dev/null +++ b/packages/opencensus-core/src/common/console-logger.ts @@ -0,0 +1,124 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as util from 'util'; + +import * as types from './types'; + +const logDriver = require('log-driver'); + + +/** + * This class implements a console logger. + */ +export class ConsoleLogger implements types.Logger { + // tslint:disable:no-any + private logger: any; + static LEVELS = ['silent', 'error', 'warn', 'info', 'debug', 'silly']; + level: string; + + + // TODO: reevaluate options to accept numbers as a parameter + + /** + * Constructs a new ConsoleLogger instance + * @param options A logger configuration object. + */ + constructor(options?: types.LoggerOptions|string|number) { + let opt: types.LoggerOptions = {}; + if (typeof options === 'number') { + if (options < 0) { + options = 0; + } else if (options > ConsoleLogger.LEVELS.length) { + options = ConsoleLogger.LEVELS.length - 1; + } + opt = {level: ConsoleLogger.LEVELS[options]}; + } else if (typeof options === 'string') { + opt = {level: options}; + } else { + opt = options || {}; + } + this.level = opt.level; + this.logger = + logDriver({levels: ConsoleLogger.LEVELS, level: opt.level || 'silent'}); + } + + /** + * Logger error function. + * @param message menssage erro to log in console + * @param args arguments to log in console + */ + // tslint:disable:no-any + error(message: any, ...args: any[]): void { + this.logger.error(util.format(message, ...args)); + } + + /** + * Logger warning function. + * @param message menssage warning to log in console + * @param args arguments to log in console + */ + // tslint:disable:no-any + warn(message: any, ...args: any[]): void { + this.logger.warn(util.format(message, ...args)); + } + + /** + * Logger info function. + * @param message menssage info to log in console + * @param args arguments to log in console + */ + // tslint:disable:no-any + info(message: any, ...args: any[]): void { + this.logger.info(util.format(message, ...args)); + } + + /** + * Logger debug function. + * @param message menssage debug to log in console + * @param args arguments to log in console + */ + // tslint:disable:no-any + debug(message: any, ...args: any[]): void { + this.logger.debug(util.format(message, ...args)); + } + + /** + * Logger silly function. + * @param message menssage silly to log in console + * @param args arguments to log in console + */ + // tslint:disable:no-any + silly(message: any, ...args: any[]): void { + this.logger.silly(util.format(message, ...args)); + } +} + + +// TODO: reevaluate the need to create a new logger instance on every call to +// logger(); + +/** + * Function logger exported to others classes. + * @param options A logger options or strig to logger in console + */ +const logger = (options?: types.LoggerOptions|string|number) => { + const aLogger = new ConsoleLogger(options); + logger['logger'] = aLogger; + return aLogger; +}; + +export {logger}; diff --git a/packages/opencensus-core/src/common/types.ts b/packages/opencensus-core/src/common/types.ts new file mode 100644 index 000000000..5eb987e04 --- /dev/null +++ b/packages/opencensus-core/src/common/types.ts @@ -0,0 +1,30 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +// tslint:disable:no-any +export type LogFunction = (message: any, ...args: any[]) => void; + +/** Defines an logger interface. */ +export interface Logger { + error: LogFunction; + warn: LogFunction; + info: LogFunction; + debug: LogFunction; + silly: LogFunction; +} + +/** Defines an logger options interface. */ +export interface LoggerOptions { level?: string; } diff --git a/packages/opencensus-core/src/exporters/console-exporter.ts b/packages/opencensus-core/src/exporters/console-exporter.ts new file mode 100644 index 000000000..9c1f17f5c --- /dev/null +++ b/packages/opencensus-core/src/exporters/console-exporter.ts @@ -0,0 +1,73 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as loggerTypes from '../common/types'; +import * as modelTypes from '../trace/model/types'; + +import {ExporterBuffer} from './exporter-buffer'; +import * as types from './types'; + +/** Do not send span data */ +export class NoopExporter implements types.Exporter { + logger: loggerTypes.Logger; + onEndSpan(root: modelTypes.RootSpan) {} + publish(rootSpans: modelTypes.RootSpan[]) {} +} + +/** Format and sends span data to the console. */ +export class ConsoleExporter implements types.Exporter { + /** Buffer object to store the spans. */ + private buffer: ExporterBuffer; + private logger: loggerTypes.Logger; + + /** + * Constructs a new ConsoleLogExporter instance. + * @param config Exporter configuration object to create a console log + * exporter. + */ + constructor(config: types.ExporterConfig) { + this.buffer = new ExporterBuffer(this, config); + this.logger = config.logger; + } + + /** + * Event called when a span is ended. + * @param root Ended span. + */ + onEndSpan(root: modelTypes.RootSpan) { + this.buffer.addToBuffer(root); + } + + /** + * Sends the spans information to the console. + * @param rootSpans + */ + publish(rootSpans: modelTypes.RootSpan[]) { + rootSpans.map((root) => { + const ROOT_STR = `RootSpan: {traceId: ${root.traceId}, spanId: ${ + root.id}, name: ${root.name} }`; + const SPANS_STR: string[] = root.spans.map( + (span) => [`\t\t{spanId: ${span.id}, name: ${span.name}}`].join( + '\n')); + const result: string[] = []; + + result.push( + ROOT_STR + '\n\tChildSpans:\n' + + `${SPANS_STR.join('\n')}`); + console.log(`${result}`); + }); + } +} diff --git a/packages/opencensus-core/src/exporters/exporter-buffer.ts b/packages/opencensus-core/src/exporters/exporter-buffer.ts new file mode 100644 index 000000000..42e081ba8 --- /dev/null +++ b/packages/opencensus-core/src/exporters/exporter-buffer.ts @@ -0,0 +1,124 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as uuidv4 from 'uuid/v4'; +import * as logger from '../common/console-logger'; +import * as loggerTypes from '../common/types'; +import * as configTypes from '../trace/config/types'; +import * as modelTypes from '../trace/model/types'; +import * as types from './types'; + + +/** Controls the sending of traces to exporters. */ +export class ExporterBuffer { + /** The service to send the collected spans. */ + private exporter: types.Exporter; + /** Maximum size of a buffer. */ + private bufferSize: number; + /** Max time for a buffer can wait before being sent */ + private bufferTimeout: number; + /** Manage when the buffer timeout needs to be reseted */ + private resetTimeout = false; + /** Indicates when the buffer timeout is running */ + private bufferTimeoutInProgress = false; + /** An object to log information to */ + private logger: loggerTypes.Logger; + /** Trace queue of a buffer */ + private queue: modelTypes.RootSpan[] = []; + + /** + * Constructs a new Buffer instance. + * @param exporter The service to send the collected spans. + * @param config A buffer configuration object to create a buffer. + */ + constructor(exporter: types.Exporter, config: configTypes.BufferConfig) { + this.exporter = exporter; + this.logger = config.logger || logger.logger(); + this.bufferSize = config.bufferSize; + this.bufferTimeout = config.bufferTimeout; + return this; + } + + /** + * Set the buffer size value. + * @param bufferSize The new buffer size. + */ + setBufferSize(bufferSize: number) { + this.bufferSize = bufferSize; + return this; + } + + getBufferSize(): number { + return this.bufferSize; + } + + getQueue(): modelTypes.RootSpan[] { + return this.queue; + } + /** + * Add a rootSpan in the buffer. + * @param root RootSpan to be added in the buffer. + */ + addToBuffer(root: modelTypes.RootSpan) { + this.queue.push(root); + this.logger.debug('ExporterBuffer: added new rootspan'); + + if (this.queue.length > this.bufferSize) { + this.flush(); + } + + if (this.bufferTimeoutInProgress) { + this.resetBufferTimeout(); + } else { + this.setBufferTimeout(); + } + + return this; + } + + /** Reset the buffer timeout */ + private resetBufferTimeout() { + this.logger.debug('ExporterBuffer: reset timeout'); + this.resetTimeout = true; + } + + /** Start the buffer timeout, when finished calls flush method */ + private setBufferTimeout() { + this.logger.debug('ExporterBuffer: set timeout'); + this.bufferTimeoutInProgress = true; + + setTimeout(() => { + if (this.queue.length === 0) { + return; + } + + if (this.resetTimeout) { + this.resetTimeout = false; + this.setBufferTimeout(); + } else { + this.bufferTimeoutInProgress = false; + this.flush(); + } + }, this.bufferTimeout); + } + + /** Send the trace queue to all exporters */ + private flush() { + this.exporter.publish(this.queue); + this.queue = []; + return this; + } +} diff --git a/packages/opencensus-core/src/exporters/types.ts b/packages/opencensus-core/src/exporters/types.ts new file mode 100644 index 000000000..7974402ce --- /dev/null +++ b/packages/opencensus-core/src/exporters/types.ts @@ -0,0 +1,31 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + + +import * as loggerTypes from '../common/types'; +import * as configTypes from '../trace/config/types'; +import * as modelTypes from '../trace/model/types'; + +/** Defines an exporter interface. */ +export interface Exporter extends modelTypes.OnEndSpanEventListener { + /** + * Sends a list of root spans to the service. + * @param rootSpans A list of root spans to publish. + */ + publish(rootSpans: modelTypes.RootSpan[]): void; +} + +export type ExporterConfig = configTypes.BufferConfig; diff --git a/packages/opencensus-core/src/index-classes.ts b/packages/opencensus-core/src/index-classes.ts new file mode 100644 index 000000000..c072bc87f --- /dev/null +++ b/packages/opencensus-core/src/index-classes.ts @@ -0,0 +1,32 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +// all classes + +// domain models impls +export * from './trace/model/root-span'; +export * from './trace/model/span'; +export * from './trace/model/tracer'; + +// sampler impl +export * from './trace/sampler/sampler'; + +// base instrumetation class +export * from './trace/instrumentation/base-plugin'; + +// console exporter and buffer impls +export * from './exporters/exporter-buffer'; +export * from './exporters/console-exporter'; diff --git a/packages/opencensus-core/src/index-types.ts b/packages/opencensus-core/src/index-types.ts new file mode 100644 index 000000000..d09fa413a --- /dev/null +++ b/packages/opencensus-core/src/index-types.ts @@ -0,0 +1,24 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +// all types +export * from './trace/types'; +export * from './trace/model/types'; +export * from './trace/config/types'; +export * from './trace/sampler/types'; +export * from './trace/instrumentation/types'; +export * from './exporters/types'; +export * from './common/types'; diff --git a/packages/opencensus-core/src/index.ts b/packages/opencensus-core/src/index.ts new file mode 100644 index 000000000..5d9e34ff0 --- /dev/null +++ b/packages/opencensus-core/src/index.ts @@ -0,0 +1,22 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + + +import * as logger from './common/console-logger'; +import * as classes from './index-classes'; +import * as types from './index-types'; + +export {classes, logger, types}; diff --git a/packages/opencensus-core/src/internal/clock.ts b/packages/opencensus-core/src/internal/clock.ts new file mode 100644 index 000000000..3e80f7270 --- /dev/null +++ b/packages/opencensus-core/src/internal/clock.ts @@ -0,0 +1,77 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + + +/** + * The Clock class is used to record the duration and endTime for spans. + */ +export class Clock { + /** Indicates if the clock is endend. */ + private endedLocal = false; + /** Indicates the clock's start time. */ + private startTimeLocal: Date; + /** The time in high resolution in a [seconds, nanoseconds]. */ + private hrtimeLocal: [number, number]; + /** The duration between start and end of the clock. */ + private diff: [number, number] = null; + + /** Constructs a new SamplerImpl instance. */ + constructor() { + this.startTimeLocal = new Date(); + this.hrtimeLocal = process.hrtime(); + } + + /** Ends the clock. */ + end(): void { + if (this.endedLocal) { + return; + } + this.diff = process.hrtime(this.hrtimeLocal); + this.endedLocal = true; + } + + /** Gets the duration of the clock. */ + get duration(): number { + if (!this.endedLocal) { + return null; + } + const ns = this.diff[0] * 1e9 + this.diff[1]; + return ns / 1e6; + } + + + /** Starts the clock. */ + get startTime(): Date { + return this.startTimeLocal; + } + + /** + * Gets the time so far. + * @returns A Date object with the current duration. + */ + get endTime(): Date { + let result: Date = null; + if (this.ended) { + result = new Date(this.startTime.getTime() + this.duration); + } + return result; + } + + /** Indicates if the clock was ended. */ + get ended(): boolean { + return this.endedLocal; + } +} diff --git a/packages/opencensus-core/src/internal/cls-ah.ts b/packages/opencensus-core/src/internal/cls-ah.ts new file mode 100644 index 000000000..8e273454c --- /dev/null +++ b/packages/opencensus-core/src/internal/cls-ah.ts @@ -0,0 +1,148 @@ +/** + * Copyright 2018 Google LLC + * + * 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. + */ + +// Original file from Stackdriver Trace Agent for Node.js +// https://github.com/GoogleCloudPlatform/cloud-trace-nodejs + +import * as asyncHook from 'async_hooks'; +import {Context, Func, Namespace as CLSNamespace} from 'continuation-local-storage'; +import {EventEmitter} from 'events'; +import * as shimmer from 'shimmer'; + +const wrappedSymbol = Symbol('context_wrapped'); +let contexts: {[asyncId: number]: Context;} = {}; +let current: Context = {}; + +asyncHook.createHook({init, before, destroy}).enable(); + +const EVENT_EMITTER_METHODS: Array = + ['addListener', 'on', 'once', 'prependListener', 'prependOnceListener']; + +class AsyncHooksNamespace implements CLSNamespace { + get name(): string { + throw new Error('Not implemented'); + } + + get active(): Context { + throw new Error('Not implemented'); + } + + createContext(): Context { + throw new Error('Not implemented'); + } + + get(k: string) { + return current[k]; + } + + set(k: string, v: T): T { + current[k] = v; + return v; + } + + run(fn: Func): Context { + this.runAndReturn(fn); + return current; + } + + runAndReturn(fn: Func): T { + const oldContext = current; + current = {}; + const res = fn(); + current = oldContext; + return res; + } + + bind(cb: Func): Func { + // TODO(kjin): Monitor https://github.com/Microsoft/TypeScript/pull/15473. + // When it's landed and released, we can remove these `any` casts. + // tslint:disable-next-line:no-any + if ((cb as any)[wrappedSymbol] as boolean || !current) { + return cb; + } + const boundContext = current; + const contextWrapper = function(this: {}) { + const oldContext = current; + current = boundContext; + const res = cb.apply(this, arguments) as T; + current = oldContext; + return res; + }; + // tslint:disable-next-line:no-any + (contextWrapper as any)[wrappedSymbol] = true; + Object.defineProperty(contextWrapper, 'length', { + enumerable: false, + configurable: true, + writable: false, + value: cb.length + }); + return contextWrapper; + } + + // This function is not technically needed and all tests currently pass + // without it (after removing call sites). While it is not a complete + // solution, restoring correct context before running every request/response + // event handler reduces the number of situations in which userspace queuing + // will cause us to lose context. + bindEmitter(ee: NodeJS.EventEmitter): void { + const ns = this; + EVENT_EMITTER_METHODS.forEach((method) => { + if (ee[method]) { + shimmer.wrap(ee, method, (oldMethod) => { + return function(this: {}, event: string, cb: Func) { + return oldMethod.call(this, event, ns.bind(cb)); + }; + }); + } + }); + } +} + +const namespace = new AsyncHooksNamespace(); + +// AsyncWrap Hooks + +function init( + uid: number, provider: string, parentUid: number, parentHandle: {}) { + contexts[uid] = current; +} + +function before(uid: number) { + if (contexts[uid]) { + current = contexts[uid]; + } +} + +function destroy(uid: number) { + delete contexts[uid]; +} + +export function createNamespace(): CLSNamespace { + return namespace; +} + +export function destroyNamespace(): void { + current = {}; + contexts = {}; +} + +export function getNamespace(): CLSNamespace { + return namespace; +} + +export function reset(): void { + throw new Error('Not implemented'); +} diff --git a/packages/opencensus-core/src/internal/cls.ts b/packages/opencensus-core/src/internal/cls.ts new file mode 100644 index 000000000..15384f2bc --- /dev/null +++ b/packages/opencensus-core/src/internal/cls.ts @@ -0,0 +1,59 @@ +/** + * Copyright 2018 Google LLC + * + * 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. + */ + +// Original file from Stackdriver Trace Agent for Node.js +// https://github.com/GoogleCloudPlatform/cloud-trace-nodejs + +import * as CLS from 'continuation-local-storage'; +import * as semver from 'semver'; + +import * as cls_ah from './cls-ah'; + +export type Namespace = CLS.Namespace; +export type Func = CLS.Func; + +const useAsyncHooks: boolean = semver.satisfies( + process.version, '>=8'); //&& + // !!process.env.GCLOUD_TRACE_NEW_CONTEXT; + +import * as Debug from 'debug'; +const debug = Debug('opencensus'); +debug('useAsyncHooks = %s', useAsyncHooks); + +const cls: typeof CLS = useAsyncHooks ? cls_ah : CLS; + + +const TRACE_NAMESPACE = 'opencensus.io'; + +/** + * Stack traces are captured when a root span is started. Because the stack + * trace height varies on the context propagation mechanism, to keep published + * stack traces uniform we need to remove the top-most frames when using the + * c-l-s module. Keep track of this number here. + */ +export const ROOT_SPAN_STACK_OFFSET = useAsyncHooks ? 0 : 2; + +export function createNamespace(): CLS.Namespace { + return cls.createNamespace(TRACE_NAMESPACE); +} + +export function destroyNamespace(): void { + cls.destroyNamespace(TRACE_NAMESPACE); +} + +export function getNamespace(): CLS.Namespace { + return cls.getNamespace(TRACE_NAMESPACE); +} diff --git a/packages/opencensus-core/src/internal/util.ts b/packages/opencensus-core/src/internal/util.ts new file mode 100644 index 000000000..358727af1 --- /dev/null +++ b/packages/opencensus-core/src/internal/util.ts @@ -0,0 +1,40 @@ +/** + * Copyright 2018 Google LLC + * + * 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. + */ + +// Code snippets from Stackdriver Trace Agent +// https://github.com/GoogleCloudPlatform/cloud-trace-nodejs + +import * as crypto from 'crypto'; + + +// TODO: rethink this snippet aproach + +// Use 6 bytes of randomness only as JS numbers are doubles not 64-bit ints. +const SPAN_ID_RANDOM_BYTES = 6; + +// Use the faster crypto.randomFillSync when available (Node 7+) falling back to +// using crypto.randomBytes. +const spanIdBuffer = Buffer.alloc(SPAN_ID_RANDOM_BYTES); +const randomFillSync = crypto.randomFillSync; +const randomBytes = crypto.randomBytes; +const spanRandomBuffer = randomFillSync ? + () => randomFillSync(spanIdBuffer) : + () => randomBytes(SPAN_ID_RANDOM_BYTES); + +export function randomSpanId() { + // tslint:disable-next-line:ban Needed to parse hexadecimal. + return parseInt(spanRandomBuffer().toString('hex'), 16).toString(); +} \ No newline at end of file diff --git a/packages/opencensus-core/src/trace/config/types.ts b/packages/opencensus-core/src/trace/config/types.ts new file mode 100644 index 000000000..12947ebdd --- /dev/null +++ b/packages/opencensus-core/src/trace/config/types.ts @@ -0,0 +1,72 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import {Logger} from '../../common/types'; +import {Exporter} from '../../exporters/types'; +import {PluginNames} from '../instrumentation/types'; + +/** Interface configuration for a buffer. */ +export interface BufferConfig { + /** Maximum size of a buffer. */ + bufferSize?: number; + /** Max time for a buffer can wait before being sent */ + bufferTimeout?: number; + /** A logger object */ + logger?: Logger; +} + +/** Defines tracer configuration parameters */ +export interface TracerConfig { + /** Determines the samplin rate. Ranges from 0.0 to 1.0 */ + samplingRate?: number; + /** Determines the ignored (or blacklisted) URLs */ + ignoreUrls?: Array; + /** A logger object */ + logger?: Logger; +} + +/** Available configuration options. */ +export interface TracingConfig { + /** level of logger - 0:disable, 1: error, 2: warn, 3: info, 4: debug */ + logLevel?: number; + + /** + * The maximum number of characters reported on a label value. + */ + maximumLabelValueSize?: number; + + /** + * A list of trace instrumentations plugins to load. + * Each key is the name of the module to trace, and its + * value is the name of the package which has the plugin + * implementation. + * Ex.: + * plugins: { + * 'http': '@opencensus/opencensus-instrumentation-http', + * 'mongodb-core': '@opencensus/opencensus-instrumentation-mongodb-core', + * ... + * } + * Any user-provided value will be added to the default list. + * It will override any default plugin for the same key. + */ + plugins?: PluginNames; + /** An exporter object */ + exporter?: Exporter; + /** An instance of a logger */ + logger?: Logger; +} + +export type Config = TracingConfig&TracerConfig&BufferConfig; diff --git a/packages/opencensus-core/src/trace/instrumentation/base-plugin.ts b/packages/opencensus-core/src/trace/instrumentation/base-plugin.ts new file mode 100644 index 000000000..9021aface --- /dev/null +++ b/packages/opencensus-core/src/trace/instrumentation/base-plugin.ts @@ -0,0 +1,69 @@ +/** + * Copyright 2018, OpenCensus 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. + */ +import * as shimmer from 'shimmer'; +import * as modelTypes from '../model/types'; +import * as types from './types'; + +// TODO: improve Jsdoc comments + +/** This class represent the base to patch plugin. */ +export abstract class BasePlugin implements types.Plugin { + /** Exporters from the nodejs module to be instrumented */ + // tslint:disable:no-any + protected moduleExporters: any; + /** The module name */ + protected moduleName: string; + /** A tracer object. */ + protected tracer: modelTypes.Tracer; + /** The module version. */ + protected version: string; + + /** + * Constructs a new BasePlugin instance. + * @param moduleName The module name. + */ + constructor(moduleName: string) { + this.moduleName = moduleName; + } + + /** + * Sets modified plugin to the context. + * @param moduleExporters object moduleExporters to set as context + * @param tracer tracer relating to context + * @param version module version description + */ + // tslint:disable:no-any + protected setPluginContext( + moduleExporters: any, tracer: modelTypes.Tracer, version: string) { + this.moduleExporters = moduleExporters; + this.tracer = tracer; + this.version = version; + } + + + // TODO: review this implementation + // From the perspective of an instrumentation module author, + // that applyUnpatch is abstract makes it seem like patching is optional, + // while unpatching is not. It should be the other way around + + // tslint:disable:no-any + applyPatch(moduleExporters: any, tracer: modelTypes.Tracer, version: string): + any { + this.setPluginContext(moduleExporters, tracer, version); + } + + abstract applyUnpatch(): void; +} diff --git a/packages/opencensus-core/src/trace/instrumentation/types.ts b/packages/opencensus-core/src/trace/instrumentation/types.ts new file mode 100644 index 000000000..b81fe70be --- /dev/null +++ b/packages/opencensus-core/src/trace/instrumentation/types.ts @@ -0,0 +1,41 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import {Tracer} from '../model/types'; + +/** Interface Plugin to apply patch. */ +export interface Plugin { + /** + * Method to apply the instrumentation patch + * @param moduleExporters exporters from the module to patch + * @param tracer a tracer instance + * @param version version of the current instaled module to patch + */ + // tslint:disable:no-any + applyPatch(moduleExporters: any, tracer: Tracer, version: string): any; + /** Method to unpatch the instrumentation */ + applyUnpatch(): void; +} + + +/** + * Type PluginNames: each key should be the name of the module to trace, + * and its value should be the name of the package which has the + * plugin implementation. + */ +export type PluginNames = { + [pluginName: string]: string; +}; diff --git a/packages/opencensus-core/src/trace/model/root-span.ts b/packages/opencensus-core/src/trace/model/root-span.ts new file mode 100644 index 000000000..4c73e7e06 --- /dev/null +++ b/packages/opencensus-core/src/trace/model/root-span.ts @@ -0,0 +1,122 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as uuid from 'uuid'; + +import * as logger from '../../common/console-logger'; +import {Clock} from '../../internal/clock'; + +import {Span} from './span'; +import {SpanBase} from './span-base'; +import * as types from './types'; + + +/** Defines a root span */ +export class RootSpan extends SpanBase implements types.RootSpan { + /** A tracer object */ + private tracer: types.Tracer; + /** A list of child spans. */ + private spansLocal: types.Span[]; + /** It's trace ID. */ + private traceIdLocal: string; + + /** + * Constructs a new RootSpanImpl instance. + * @param tracer A tracer object. + * @param context A trace options object to build the root span. + */ + constructor(tracer: types.Tracer, context?: types.TraceOptions) { + super(); + this.tracer = tracer; + this.traceIdLocal = + context && context.spanContext && context.spanContext.traceId ? + context.spanContext.traceId : + (uuid.v4().split('-').join('')); + this.name = context && context.name ? context.name : 'undefined'; + if (context && context.spanContext) { + this.parentSpanId = context.spanContext.spanId || ''; + } + this.spansLocal = []; + this.type = context && context.type ? context.type : null; + this.logger = tracer.logger || logger.logger(); + } + + /** Gets span list from rootspan instance. */ + get spans(): types.Span[] { + return this.spansLocal; + } + + /** Gets trace id from rootspan instance. */ + get traceId(): string { + return this.traceIdLocal; + } + + /** Starts a rootspan instance. */ + start() { + super.start(); + this.logger.debug( + 'starting %s %o', this.className, + {traceId: this.traceId, id: this.id, parentSpanId: this.parentSpanId}); + } + + // TODO: review end() behavior if it should throw an error when it is called + // before start() + /** Ends a rootspan instance. */ + end() { + super.end(); + + for (const span of this.spansLocal) { + if (!span.ended && span.started) { + span.truncate(); + } + } + + this.tracer.onEndSpan(this); + } + + + /** + * Starts a new child span in the root span. + * @param name Span name. + * @param type Span type. + * @param parentSpanId Span parent ID. + */ + startChildSpan(name: string, type: string, parentSpanId?: string): + types.Span { + if (this.ended) { + this.logger.debug( + 'calling %s.startSpan() on ended %s %o', this.className, + this.className, {id: this.id, name: this.name, type: this.type}); + return null; + } + if (!this.started) { + this.logger.debug( + 'calling %s.startSpan() on un-started %s %o', this.className, + this.className, {id: this.id, name: this.name, type: this.type}); + return null; + } + const newSpan = new Span(this); + if (name) { + newSpan.name = name; + } + if (type) { + newSpan.type = type; + } + newSpan.start(); + this.spansLocal.push(newSpan); + return newSpan; + } +} diff --git a/packages/opencensus-core/src/trace/model/span-base.ts b/packages/opencensus-core/src/trace/model/span-base.ts new file mode 100644 index 000000000..2e0fcb83e --- /dev/null +++ b/packages/opencensus-core/src/trace/model/span-base.ts @@ -0,0 +1,218 @@ +/** + * Copyright 2018, OpenCensus 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. + */ +import {Logger} from '../../common/types'; +import {Clock} from '../../internal/clock'; +import {randomSpanId} from '../../internal/util'; + +import * as types from './types'; + + +/** Defines a base model for spans. */ +export abstract class SpanBase implements types.Span { + protected className: string; + /** The clock used to mesure the beginning and ending of a span */ + private clock: Clock = null; + /** Indicates if this span was started */ + private startedLocal = false; + /** Indicates if this span was ended */ + private endedLocal = false; + /** Indicates if this span was forced to end */ + private truncated = false; + /** The Span ID of this span */ + readonly id: string; + /** An object to log information to */ + logger: Logger; + /** A set of attributes, each in the format [KEY]:[VALUE] */ + attributes: types.Attributes = {}; + /** A text annotation with a set of attributes. */ + annotations: types.Annotation[] = []; + /** An event describing a message sent/received between Spans */ + messageEvents: types.MessageEvent[] = []; + /** Pointers from the current span to another span */ + links: types.Link[] = []; + /** If the parent span is in another process. */ + remoteParent: boolean; + /** The span ID of this span's parent. If it's a root span, must be empty */ + parentSpanId: string = null; + /** The resource name of the span */ + name: string = null; + /** Type of span. Used to specify additional relationships between spans */ + type: string = null; + /** A final status for this span */ + status: number; + + /** Constructs a new SpanBaseModel instance. */ + constructor() { + this.className = this.constructor.name; + this.id = randomSpanId(); + } + + /** Gets the trace ID. */ + abstract get traceId(): string; + + + /** Indicates if span was started. */ + get started(): boolean { + return this.startedLocal; + } + + /** Indicates if span was ended. */ + get ended(): boolean { + return this.endedLocal; + } + + /** + * Gives a timestamp that indicates the span's start time in RFC3339 UTC + * "Zulu" format. + */ + get startTime(): Date { + if (!this.clock) { + this.logger.debug('calling startTime() on null clock'); + return null; + } + + return this.clock.startTime; + } + + /** + * Gives a timestap that indicates the span's end time in RFC3339 UTC + * "Zulu" format. + */ + get endTime(): Date { + if (!this.clock) { + this.logger.debug('calling endTime() on null clock'); + return null; + } + + return this.clock.endTime; + } + + /** + * Gives a timestap that indicates the span's duration in RFC3339 UTC + * "Zulu" format. + */ + get duration(): number { + if (!this.clock) { + this.logger.debug('calling duration() on null clock'); + return null; + } + + return this.clock.duration; + } + + /** Gives the TraceContext of the span. */ + get spanContext(): types.SpanContext { + return { + traceId: this.traceId.toString(), + spanId: this.id.toString(), + parentSpanId: this.parentSpanId + } as types.SpanContext; + } + + /** + * Adds an atribute to the span. + * @param key Describes the value added. + * @param value The result of an operation. + */ + addAttribute(key: string, value: string|number|boolean) { + this.attributes[key] = value; + } + + /** + * Adds an annotation to the span. + * @param description Describes the event. + * @param timestamp A timestamp that maks the event. + * @param attributes A set of attributes on the annotation. + */ + addAnnotation( + description: string, timestamp: number, attributes?: types.Attributes) { + this.annotations.push({ + 'description': description, + 'timestamp': timestamp, + 'attributes': attributes, + } as types.Annotation); + } + + /** + * Adds a link to the span. + * @param traceId The trace ID for a trace within a project. + * @param spanId The span ID for a span within a trace. + * @param type The relationship of the current span relative to the linked. + * @param attributes A set of attributes on the link. + */ + addLink( + traceId: string, spanId: string, type: string, + attributes?: types.Attributes) { + this.links.push({ + 'traceId': traceId, + 'spanId': spanId, + 'type': type, + 'attributes': attributes + } as types.Link); + } + + /** + * Adds a message event to the span. + * @param type The type of message event. + * @param id An identifier for the message event. + */ + addMessageEvent(type: string, id: string) { + this.messageEvents.push({ + 'type': type, + 'id': id, + } as types.MessageEvent); + } + + /** Starts the span. */ + start() { + if (this.started) { + this.logger.debug( + 'calling %s.start() on already started %s %o', this.className, + this.className, {id: this.id, name: this.name, type: this.type}); + return; + } + this.clock = new Clock(); + this.startedLocal = true; + } + + /** Ends the span. */ + end(): void { + if (this.ended) { + this.logger.debug( + 'calling %s.end() on already ended %s %o', this.className, + this.className, {id: this.id, name: this.name, type: this.type}); + return; + } + if (!this.started) { + this.logger.debug( + 'calling %s.end() on un-started %s %o', this.className, + this.className, {id: this.id, name: this.name, type: this.type}); + return; + } + this.startedLocal = false; + this.endedLocal = true; + this.clock.end(); + } + + + /** Forces the span to end. */ + truncate() { + this.truncated = true; + this.end(); + this.logger.debug( + 'truncating %s %o', this.className, {id: this.id, name: this.name}); + } +} \ No newline at end of file diff --git a/packages/opencensus-core/src/trace/model/span.ts b/packages/opencensus-core/src/trace/model/span.ts new file mode 100644 index 000000000..9842b199a --- /dev/null +++ b/packages/opencensus-core/src/trace/model/span.ts @@ -0,0 +1,73 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as logger from '../../common/console-logger'; + +import {SpanBase} from './span-base'; +import * as types from './types'; + + +/** Defines a Span. */ +export class Span extends SpanBase implements types.Span { + private root: types.RootSpan; + + /** + * Constructs a new SpanImpl instance. + * @param root + */ + constructor(root: types.RootSpan) { + super(); + this.root = root; + this.logger = this.root.logger || logger.logger(); + } + + /** Gets trace id of span. */ + get traceId(): string { + return this.root.traceId; + } + + /** Gets trace context of span. */ + get spanContext(): types.SpanContext { + return { + traceId: this.traceId.toString(), + spanId: this.id.toString(), + options: 1 // always traced + }; + } + + /** Starts the span instance. */ + start() { + super.start(); + this.logger.debug( + 'starting span %o', + {traceId: this.traceId, spanId: this.id, name: this.name}); + } + + + + /** Ends the span. */ + end(): void { + super.end(); + this.logger.debug('ending span %o', { + spanId: this.id, + traceId: this.traceId, + name: this.name, + startTime: this.startTime, + endTime: this.endTime, + duration: this.duration + }); + } +} diff --git a/packages/opencensus-core/src/trace/model/tracer.ts b/packages/opencensus-core/src/trace/model/tracer.ts new file mode 100644 index 000000000..4d5267e15 --- /dev/null +++ b/packages/opencensus-core/src/trace/model/tracer.ts @@ -0,0 +1,223 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as logger from '../../common/console-logger'; +import * as loggerTypes from '../../common/types'; +import * as cls from '../../internal/cls'; +import * as configTypes from '../config/types'; +import {Sampler} from '../sampler/sampler'; +import * as samplerTypes from '../sampler/types'; + +import {RootSpan} from './root-span'; +import {Span} from './span'; +import * as types from './types'; + + +/** + * This class represent a tracer. + */ +export class Tracer implements types.Tracer { + /** Indicates if the tracer is active */ + private activeLocal: boolean; + /** Manage context automatic propagation */ + private contextManager: cls.Namespace; + /** A configuration for starting the tracer */ + private config: configTypes.TracerConfig; + /** A list of end span event listeners */ + private eventListenersLocal: types.OnEndSpanEventListener[] = []; + /** A list of ended root spans */ + private endedTraces: types.RootSpan[] = []; + /** Bit to represent whether trace is sampled or not. */ + private readonly IS_SAMPLED = 0x1; + /** A sampler used to make sample decisions */ + sampler: samplerTypes.Sampler; + /** A configuration for starting the tracer */ + logger: loggerTypes.Logger = logger.logger(); + + + /** Constructs a new TraceImpl instance. */ + constructor() { + this.activeLocal = false; + this.contextManager = cls.createNamespace(); + this.clearCurrentTrace(); + } + + /** Gets the current root span. */ + get currentRootSpan(): types.RootSpan { + return this.contextManager.get('rootspan'); + } + + /** Sets the current root span. */ + set currentRootSpan(root: types.RootSpan) { + this.contextManager.set('rootspan', root); + } + + /** + * Starts a tracer. + * @param config A tracer configuration object to start a tracer. + */ + start(config: configTypes.TracerConfig): types.Tracer { + this.activeLocal = true; + this.config = config; + this.logger = this.config.logger || logger.logger(); + this.sampler = new Sampler().probability(config.samplingRate); + return this; + } + + /** Stops the tracer. */ + stop(): types.Tracer { + this.activeLocal = false; + return this; + } + + /** Gets the list of event listners. */ + get eventListeners(): types.OnEndSpanEventListener[] { + return this.eventListenersLocal; + } + + /** Indicates if the tracer is active or not. */ + get active(): boolean { + return this.activeLocal; + } + + /** + * Starts a root span. + * @param options A TraceOptions object to start a root span. + * @param fn A callback function to run after starting a root span. + */ + startRootSpan( + options: types.TraceOptions, fn: (root: types.RootSpan) => T): T { + return this.contextManager.runAndReturn((root) => { + let newRoot = null; + if (this.active) { + let propagatedSample = null; + + // if there is a context propagation, keep the decistion + if (options && options.spanContext) { + if (options.spanContext.options) { + propagatedSample = + ((options.spanContext.options & this.IS_SAMPLED) !== 0); + } + if (!propagatedSample) { + options.spanContext = null; + } + } + const aRoot = new RootSpan(this, options); + const sampleDecision: boolean = propagatedSample ? + propagatedSample : + this.sampler.shouldSample(aRoot.traceId); + + if (sampleDecision) { + aRoot.start(); + this.currentRootSpan = aRoot; + newRoot = aRoot; + } + } else { + this.logger.debug('Tracer is inactive, can\'t start new RootSpan'); + } + return fn(newRoot); + }); + } + + /** + * Is called when a span is ended. + * @param root The ended span. + */ + onEndSpan(root: types.RootSpan): void { + if (this.active) { + if (!root) { + return this.logger.debug('cannot end trace - no active trace found'); + } + if (this.currentRootSpan !== root) { + this.logger.debug( + 'currentRootSpan != root on notifyEnd. Need more investigation.'); + } + this.notifyEndSpan(root); + } + } + + /** + * Registers an end span event listener. + * @param listener The listener to register. + */ + registerEndSpanListener(listner: types.OnEndSpanEventListener) { + this.eventListenersLocal.push(listner); + } + + private notifyEndSpan(root: types.RootSpan) { + if (this.active) { + this.logger.debug('starting to notify listeners the end of rootspans'); + if (this.eventListenersLocal && this.eventListenersLocal.length > 0) { + for (const listener of this.eventListenersLocal) { + listener.onEndSpan(root); + } + } + } else { + this.logger.debug('this tracer is inactivate cant notify endspan'); + } + } + + /** Clears the current root span. */ + clearCurrentTrace() { + this.currentRootSpan = null; + } + + /** + * Starts a span. + * @param name The span name. + * @param type The span type. + */ + startChildSpan(name?: string, type?: string): types.Span { + let newSpan: types.Span = null; + if (!this.currentRootSpan) { + this.logger.debug( + 'no current trace found - must start a new root span first'); + } else { + newSpan = this.currentRootSpan.startChildSpan(name, type); + } + return newSpan; + } + + /** + * Binds the trace context to the given function. + * This is necessary in order to create child spans correctly in functions + * that are called asynchronously (for example, in a network response + * handler). + * @param fn A function to which to bind the trace context. + */ + wrap(fn: types.Func): types.Func { + if (!this.active) { + return fn; + } + const namespace = this.contextManager; + return namespace.bind(fn); + } + + /** + * Binds the trace context to the given event emitter. + * This is necessary in order to create child spans correctly in event + * handlers. + * @param emitter An event emitter whose handlers should have + * the trace context binded to them. + */ + wrapEmitter(emitter: NodeJS.EventEmitter): void { + if (!this.active) { + return; + } + const namespace = this.contextManager; + namespace.bindEmitter(emitter); + } +} diff --git a/packages/opencensus-core/src/trace/model/types.ts b/packages/opencensus-core/src/trace/model/types.ts new file mode 100644 index 000000000..5bf8e3509 --- /dev/null +++ b/packages/opencensus-core/src/trace/model/types.ts @@ -0,0 +1,277 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as loggerTypes from '../../common/types'; +import * as configTypes from '../config/types'; +import * as samplerTypes from '../sampler/types'; + + + +/** Default type for functions */ +// tslint:disable:no-any +export type Func = (...args: any[]) => T; + +/** Maps a label to a string, number or boolean. */ +export interface Attributes { [attributeKey: string]: string|number|boolean; } + +/** A text annotation with a set of attributes. */ +export interface Annotation { + /** A user-supplied message describing the event. */ + description: string; + /** A timestamp that maks the event. */ + timestamp: number; + /** A set of attributes on the annotation. */ + attributes: Attributes; +} + +/** An event describing a message sent/received between Spans. */ +export interface MessageEvent { + /** Indicates whether the message was sent or received. */ + type: string; + /** An identifier for the MessageEvent's message. */ + id: string; +} + +/** + * A pointer from the current span to another span in the same trace or in a + * different trace. + */ +export interface Link { + /** The trace ID for a trace within a project. */ + traceId: string; + /** The span ID for a span within a trace. */ + spanId: string; + /** The relationship of the current span relative to the linked. */ + type: string; + /** A set of attributes on the link. */ + attributes: Attributes; +} + +/** Defines the trace options */ +export interface TraceOptions { + /** Root span name */ + name: string; + /** Trace context */ + spanContext?: SpanContext; + /** Span type */ + type?: string; +} + +/** Defines the span context */ +export interface SpanContext { + /** Trace ID */ + traceId: string; + /** Span ID */ + spanId: string; + /** Options */ + options?: number; +} + +/** Defines an end span event listener */ +export interface OnEndSpanEventListener { + /** Happens when a span is ended */ + onEndSpan(span: RootSpan): void; +} + +/** Interface for Span */ +export interface Span { + /** The Span ID of this span */ + readonly id: string; + + /** If the parent span is in another process. */ + remoteParent: boolean; + + /** The span ID of this span's parent. If it's a root span, must be empty */ + parentSpanId: string; + + /** The resource name of the span */ + name: string; + + /** Type of span. Used to specify additional relationships between spans */ + type: string; + + /** An object to log information to */ + logger: loggerTypes.Logger; + + /** A final status for this span */ + status: number; + + /** A set of attributes, each in the format [KEY]:[VALUE] */ + attributes: Attributes; + + /** A text annotation with a set of attributes. */ + annotations: Annotation[]; + + /** An event describing a message sent/received between Spans. */ + messageEvents: MessageEvent[]; + + /** Pointers from the current span to another span */ + links: Link[]; + + /** Constructs a new SpanBaseModel instance. */ + readonly traceId: string; + + /** Indicates if span was started. */ + readonly started: boolean; + + /** Indicates if span was ended. */ + readonly ended: boolean; + + /** + * Gives a timestap that indicates the span's start time in RFC3339 UTC + * "Zulu" format. + */ + readonly startTime: Date; + + /** + * Gives a timestap that indicates the span's end time in RFC3339 UTC + * "Zulu" format. + */ + readonly endTime: Date; + + /** + * Gives a timestap that indicates the span's duration in RFC3339 UTC + * "Zulu" format. + */ + readonly duration: number; + + /** Gives the TraceContext of the span. */ + readonly spanContext: SpanContext; + + /** + * Adds an atribute to the span. + * @param key Describes the value added. + * @param value The result of an operation. + */ + addAttribute(key: string, value: string): void; + + /** + * Adds an annotation to the span. + * @param description Describes the event. + * @param timestamp A timestamp that maks the event. + * @param attributes A set of attributes on the annotation. + */ + addAnnotation( + description: string, timestamp: number, attributes?: Attributes): void; + + /** + * Adds a link to the span. + * @param traceId The trace ID for a trace within a project. + * @param spanId The span ID for a span within a trace. + * @param type The relationship of the current span relative to the linked. + * @param attributes A set of attributes on the link. + */ + addLink( + traceId: string, spanId: string, type: string, + attributes?: Attributes): void; + + /** + * Adds a message event to the span. + * @param type The type of message event. + * @param id An identifier for the message event. + */ + addMessageEvent(type: string, id: string): void; + + /** Starts a span. */ + start(): void; + + /** Ends a span. */ + end(): void; + + /** Forces to end a span. */ + truncate(): void; +} + +/** Interface for RootSpan */ +export interface RootSpan extends Span { + /** Get the span list from RootSpan instance */ + readonly spans: Span[]; + + /** Starts a new Span instance in the RootSpan instance */ + startChildSpan(name: string, type: string): Span; +} + + +/** Interface for Tracer */ +export interface Tracer extends OnEndSpanEventListener { + /** Get and set the currentRootSpan to tracer instance */ + currentRootSpan: RootSpan; + + /** A sampler that will decide if the span will be sampled or not */ + sampler: samplerTypes.Sampler; + + /** A configuration for starting the tracer */ + logger: loggerTypes.Logger; + + /** Get the eventListeners from tracer instance */ + readonly eventListeners: OnEndSpanEventListener[]; + + /** Get the active status from tracer instance */ + readonly active: boolean; + + /** + * Start a tracer instance + * @param config Configuration for tracer instace + * @returns A tracer instance started + */ + start(config: configTypes.TracerConfig): Tracer; + + /** Stop the tracer instance */ + stop(): Tracer; + + /** + * Start a new RootSpan to currentRootSpan + * @param options Options for tracer instance + * @param fn Callback function + * @returns The callback return + */ + startRootSpan(options: TraceOptions, fn: (root: RootSpan) => T): T; + + /** + * Start a new Span instance to the currentRootSpan + * @param name Span name + * @param type Span type + * @returns The new Span instance started + */ + startChildSpan(name?: string, type?: string): Span; + + /** + * Register a OnEndSpanEventListener on the tracer instance + * @param listener An OnEndSpanEventListener instance + */ + registerEndSpanListener(listener: OnEndSpanEventListener): void; + + /** Clear the currentRootSpan from tracer instance */ + clearCurrentTrace(): void; + + /** + * Binds the trace context to the given function. + * This is necessary in order to create child spans correctly in functions + * that are called asynchronously (for example, in a network response + * handler). + * @param fn A function to which to bind the trace context. + */ + wrap(fn: Func): Func; + + /** + * Binds the trace context to the given event emitter. + * This is necessary in order to create child spans correctly in event + * handlers. + * @param emitter An event emitter whose handlers should have + * the trace context binded to them. + */ + wrapEmitter(emitter: NodeJS.EventEmitter): void; +} diff --git a/packages/opencensus-core/src/trace/sampler/sampler.ts b/packages/opencensus-core/src/trace/sampler/sampler.ts new file mode 100644 index 000000000..91ed245c4 --- /dev/null +++ b/packages/opencensus-core/src/trace/sampler/sampler.ts @@ -0,0 +1,90 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import {randomSpanId} from '../../internal/util'; +import * as types from './types'; + + +const MIN_NUMBER = Number.MIN_VALUE; +const MAX_NUMBER = Number.MAX_VALUE; + + +/** This class represent the probability of a tracer. */ +export class Sampler implements types.Sampler { + private idUpperBound: number; + description: string; + + /** + * Constructs a new Sampler instance. + */ + constructor() {} + + /** + * Sets idUpperBound with MAX_NUMBER that is equivalent the probability be 1 + * @returns a Sampler object + */ + always(): Sampler { + this.description = 'always'; + this.idUpperBound = MAX_NUMBER; + return this; + } + + /** + * Sets idUpperBound with MIN_NUMBER that is equivalent the probability be 0 + * @returns a Sampler object + */ + never(): Sampler { + this.description = 'never'; + this.idUpperBound = MIN_NUMBER; + return this; + } + + /** + * Sets idUpperBound with the probability. If probability + * parameter is bigger then 1 set always. If probability parameter less + * than 0, set never. + * @param probability probability between 0 and 1 + * @returns a Sampler object + */ + probability(probability: number): Sampler { + if (probability >= 1.0) { + return this.always(); + } else if (probability <= 0) { + return this.never(); + } + this.description = `probability.(${probability})`; + this.idUpperBound = probability * MAX_NUMBER; + return this; + } + + /** + * Checks if trace belong the sample. + * @param traceId Used to check the probability + * @returns a boolean. True if the traceId is in probability + * False if the traceId is not in probability. + */ + shouldSample(traceId: string): boolean { + const LOWER_BYTES = traceId ? traceId.substring(16) : '0'; + // tslint:disable-next-line:ban Needed to parse hexadecimal. + const LOWER_LONG = parseInt(LOWER_BYTES, 16); + + if (LOWER_LONG <= this.idUpperBound) { + return true; + } else { + return false; + } + } +} \ No newline at end of file diff --git a/packages/opencensus-core/src/trace/sampler/types.ts b/packages/opencensus-core/src/trace/sampler/types.ts new file mode 100644 index 000000000..4942aa4dc --- /dev/null +++ b/packages/opencensus-core/src/trace/sampler/types.ts @@ -0,0 +1,55 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import {Logger} from '../../common/types'; +import {Exporter} from '../../exporters/types'; +import {PluginNames} from '../instrumentation/types'; + +/** This interface represent the probability of a tracer. */ +export interface Sampler { + /** + * A Sampler description name + */ + description: string; + /** + * Sets idUpperBound with MAX_NUMBER that is equivalent the probability be 1. + * @returns a Sampler object. + */ + always(): Sampler; + + /** + * Sets idUpperBound with MIN_NUMBER that is equivalent the probability be 0. + * @returns a Sampler object. + */ + never(): Sampler; + + /** + * Sets idUpperBound with the probability. If probability + * parameter is bigger then 1 set always. If probability parameter less + * than 0, set never. + * @param probability probability between 0 and 1. + * @returns a Sampler object. + */ + probability(probability: number): Sampler; + + /** + * Checks if trace belong the sample. + * @param traceId Used to check the probability. + * @returns a boolean. True if the traceId is in probability + * False if the traceId is not in probability. + */ + shouldSample(traceId: string): boolean; +} diff --git a/packages/opencensus-core/src/trace/types.ts b/packages/opencensus-core/src/trace/types.ts new file mode 100644 index 000000000..77f1bb864 --- /dev/null +++ b/packages/opencensus-core/src/trace/types.ts @@ -0,0 +1,47 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as exportersTypes from '../exporters/types'; + +import * as configTypes from './config/types'; +import * as modelTypes from './model/types'; +import * as samplerTypes from './sampler/types'; + +/** Main interface for tracing. */ +export interface Tracing { + /** Object responsible for managing a trace. */ + readonly tracer: modelTypes.Tracer; + + /** Service to send collected traces to. */ + readonly exporter: exportersTypes.Exporter; + + /** + * Enables the tracing process. + * @param userConfig A configuration object. + * @returns The tracing object. + */ + start(userConfig?: configTypes.Config): Tracing; + + /** Stops tracing. */ + stop(): void; + + /** + * Registers an exporter to send the collected traces to. + * @param exporter The exporter to send the traces to. + * @returns The tracing object. + */ + registerExporter(exporter: exportersTypes.Exporter): Tracing; +} diff --git a/packages/opencensus-core/test/test-console-exporter.ts b/packages/opencensus-core/test/test-console-exporter.ts new file mode 100644 index 000000000..82bc79a2e --- /dev/null +++ b/packages/opencensus-core/test/test-console-exporter.ts @@ -0,0 +1,100 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import {ConsoleExporter, NoopExporter} from '../src/exporters/console-exporter'; +import {ExporterBuffer} from '../src/exporters/exporter-buffer'; +import {RootSpan} from '../src/trace/model/root-span'; +import {Tracer} from '../src/trace/model/tracer'; + +const tracer = new Tracer().start({}); +const DEFAULT_BUFFER_SIZE = 3; +const DEFAULT_BUFFER_TIMEOUT = 20000; // time in milliseconds +const defaultBufferConfig = { + bufferSize: DEFAULT_BUFFER_SIZE, + bufferTimeout: DEFAULT_BUFFER_TIMEOUT +}; + +const createRootSpans = (): RootSpan[] => { + const rootSpans = []; + for (let i = 0; i < DEFAULT_BUFFER_SIZE + 1; i++) { + const rootSpan = new RootSpan(tracer, {name: `rootSpan.${i}`}); + rootSpan.start(); + for (let j = 0; j < 10; j++) { + rootSpan.startChildSpan(`childSpan.${i}.${j}`, 'client'); + } + rootSpans.push(rootSpan); + } + return rootSpans; +}; + + +describe('NoopExporter', () => { + /** Should do nothing when calling onEndSpan() */ + describe('onEndSpan()', () => { + it('should do anything', () => { + const exporter = new NoopExporter(); + const rootSpan = new RootSpan(tracer); + exporter.onEndSpan(rootSpan); + assert.ok(true); + }); + }); + + /** Should do anything when calling publish() */ + describe('publish()', () => { + it('should do anything', () => { + const exporter = new NoopExporter(); + const rootSpan = new RootSpan(tracer); + const queue: RootSpan[] = []; + queue.push(rootSpan); + + exporter.publish(queue); + assert.ok(true); + }); + }); +}); + +describe('ConsoleLogExporter', () => { + /** Should end a span */ + describe('onEndSpan()', () => { + it('should end a span', () => { + const exporter = new ConsoleExporter(defaultBufferConfig); + tracer.registerEndSpanListener(exporter); + // const rootSpan = new RootSpan(tracer); + const rootSpans = createRootSpans(); + for (const rootSpan of rootSpans) { + rootSpan.end(); + } + assert.ok(true); + }); + }); + + /** Should publish the rootspan in queue */ + describe('publish()', () => { + it('should publish the rootspans in queue', () => { + const exporter = new ConsoleExporter(defaultBufferConfig); + const rootSpan = new RootSpan(tracer); + rootSpan.startChildSpan('name', 'type', rootSpan.traceId); + const queue: RootSpan[] = []; + queue.push(rootSpan); + + exporter.publish(queue); + assert.ok(true); + }); + }); +}); \ No newline at end of file diff --git a/packages/opencensus-core/test/test-console-logger.ts b/packages/opencensus-core/test/test-console-logger.ts new file mode 100644 index 000000000..7f28435d3 --- /dev/null +++ b/packages/opencensus-core/test/test-console-logger.ts @@ -0,0 +1,154 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import * as logger from '../src/common/console-logger'; +import {ConsoleLogger} from '../src/common/console-logger'; +import {Logger} from '../src/common/types'; + + +const LEVELS = ['silent', 'error', 'warn', 'info', 'debug', 'silly']; +let consoleTxt = ''; + +// TODO: Review test cases: Maybe testing the info log level is sufficient +// because it already shows that lower levels will log, and higher levels won't. + +describe('ConsoleLogger', () => { + const intercept = require('intercept-stdout'); + const unhookIntercept = intercept((txt) => { + consoleTxt = txt; + return txt; + }); + + /** Should create a new ConsoleLogger */ + describe('new ConsoleLogger()', () => { + it('should log with default levels', () => { + const consoleLogger = logger.logger(); + assert.equal(LEVELS.length, ConsoleLogger.LEVELS.length); + }); + + it('should log with error', () => { + const consoleLogger = logger.logger(1); + assert.strictEqual(LEVELS[1], consoleLogger.level); + }); + }); + + /** Should logger only error log */ + describe('error logger', () => { + const consoleLogger = logger.logger(LEVELS[1]); + + it('should log error', () => { + consoleTxt = ''; + consoleLogger.error('error test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('error'); + + assert.ok(validateString >= 0); + }); + + it('should not log warn', () => { + consoleTxt = ''; + consoleLogger.warn('warn test logger'); + unhookIntercept(); + + const validateString = consoleTxt.indexOf('warn'); + + assert.equal(validateString, -1); + }); + + it('should not log info', () => { + consoleTxt = ''; + consoleLogger.info('info test logger'); + unhookIntercept(); + + const validateString = consoleTxt.indexOf('info'); + + assert.equal(validateString, -1); + }); + + it('should not log debug', () => { + consoleTxt = ''; + consoleLogger.debug('debug test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('debug'); + + assert.equal(validateString, -1); + }); + + it('should not log silly', () => { + consoleTxt = ''; + consoleLogger.silly('silly test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('silly'); + + assert.equal(validateString, -1); + }); + }); + + /** Should disable logger */ + describe('silent logger', () => { + const consoleLogger = logger.logger(0); + + it('should not log error', () => { + consoleTxt = ''; + consoleLogger.error('error test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('error'); + + assert.equal(validateString, -1); + }); + + it('should not log warn', () => { + consoleTxt = ''; + consoleLogger.warn('warn test logger'); + unhookIntercept(); + + const validateString = consoleTxt.indexOf('warn'); + + assert.equal(validateString, -1); + }); + + it('should not log info', () => { + consoleTxt = ''; + consoleLogger.info('info test logger'); + unhookIntercept(); + + const validateString = consoleTxt.indexOf('info'); + + assert.equal(validateString, -1); + }); + + it('should not log debug', () => { + consoleTxt = ''; + consoleLogger.debug('debug test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('debug'); + + assert.equal(validateString, -1); + }); + + it('should not log silly', () => { + consoleTxt = ''; + consoleLogger.silly('silly test logger'); + unhookIntercept(); + const validateString = consoleTxt.indexOf('silly'); + + assert.equal(validateString, -1); + }); + }); +}); diff --git a/packages/opencensus-core/test/test-exporter-buffer.ts b/packages/opencensus-core/test/test-exporter-buffer.ts new file mode 100644 index 000000000..bf0fb68ed --- /dev/null +++ b/packages/opencensus-core/test/test-exporter-buffer.ts @@ -0,0 +1,117 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import * as logger from '../src/common/console-logger'; +import {NoopExporter} from '../src/exporters/console-exporter'; +import {ExporterBuffer} from '../src/exporters/exporter-buffer'; +import {RootSpan} from '../src/trace/model/root-span'; +import {Tracer} from '../src/trace/model/tracer'; + + +const exporter = new NoopExporter(); +const DEFAULT_BUFFER_SIZE = 3; +const DEFAULT_BUFFER_TIMEOUT = 2000; // time in milliseconds +const tracer = new Tracer().start({}); + +const defaultBufferConfig = { + bufferSize: DEFAULT_BUFFER_SIZE, + bufferTimeout: DEFAULT_BUFFER_TIMEOUT, + logger: logger.logger() +}; + + +const createRootSpans = (num: number): RootSpan[] => { + const rootSpans = []; + for (let i = 0; i < num; i++) { + const rootSpan = new RootSpan(tracer, {name: `rootSpan.${i}`}); + rootSpan.start(); + for (let j = 0; j < 10; j++) { + rootSpan.startChildSpan(`childSpan.${i}.${j}`, 'client'); + } + rootSpans.push(rootSpan); + } + return rootSpans; +}; + +describe('ExporterBuffer', () => { + /** + * Should create a Buffer with exporter, DEFAULT_BUFFER_SIZE and + * DEFAULT_BUFFER_TIMEOUT + */ + describe('new ExporterBuffer()', () => { + it('should create a Buffer instance', () => { + const buffer = new ExporterBuffer(exporter, defaultBufferConfig); + assert.ok(buffer instanceof ExporterBuffer); + }); + }); + + /** + * Should return the Buffer + */ + describe('setBufferSize', () => { + it('should set BufferSize', () => { + const buffer = new ExporterBuffer(exporter, defaultBufferConfig); + const newBufferSize = DEFAULT_BUFFER_SIZE + 10; + const bufferResize = buffer.setBufferSize(newBufferSize); + assert.ok(bufferResize instanceof ExporterBuffer); + assert.strictEqual(bufferResize.getBufferSize(), newBufferSize); + }); + }); + + /** + * Should add one item to the Buffer + */ + describe('addToBuffer', () => { + it('should add one item to the Buffer', () => { + const buffer = new ExporterBuffer(exporter, defaultBufferConfig); + buffer.addToBuffer(new RootSpan(tracer)); + assert.strictEqual(buffer.getQueue().length, 1); + }); + }); + + /** + * Should force flush + */ + describe('addToBuffer force flush ', () => { + it('should force flush', () => { + const buffer = new ExporterBuffer(exporter, defaultBufferConfig); + const rootSpans = createRootSpans(DEFAULT_BUFFER_SIZE); + for (const rootSpan of rootSpans) { + buffer.addToBuffer(rootSpan); + } + assert.strictEqual(buffer.getQueue().length, buffer.getBufferSize()); + buffer.addToBuffer(new RootSpan(tracer)); + assert.strictEqual(buffer.getQueue().length, 0); + }); + }); + + /** + * Should flush by timeout + */ + describe('addToBuffer force flush by timeout ', () => { + it('should flush by timeout', () => { + const buffer = new ExporterBuffer(exporter, defaultBufferConfig); + buffer.addToBuffer(new RootSpan(tracer)); + assert.strictEqual(buffer.getQueue().length, 1); + setTimeout(() => { + assert.strictEqual(buffer.getQueue().length, 0); + }, DEFAULT_BUFFER_TIMEOUT + 100); + }); + }); +}); \ No newline at end of file diff --git a/packages/opencensus-core/test/test-root-span.ts b/packages/opencensus-core/test/test-root-span.ts new file mode 100644 index 000000000..2a4112224 --- /dev/null +++ b/packages/opencensus-core/test/test-root-span.ts @@ -0,0 +1,256 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import {RootSpan} from '../src/trace/model/root-span'; +import {Span} from '../src/trace/model/span'; +import {Tracer} from '../src/trace/model/tracer'; +import {Annotation, Attributes, Link, MessageEvent, TraceOptions} from '../src/trace/model/types'; + +const tracer = new Tracer(); + +describe('RootSpan', () => { + /** + * Should create a RootSpan instance + */ + describe('new RootSpan()', () => { + it('should create a RootSpan instance', () => { + const root = new RootSpan(tracer); + assert.ok(root instanceof RootSpan); + }); + }); + + /** + * Should create a RootSpan instance with options + */ + describe('new RootSpan() with options', () => { + it('should create a RootSpan instance with options', () => { + const trace = new RootSpan(tracer); + const options = {name: 'test', spanContext: trace.spanContext} as + TraceOptions; + const root = new RootSpan(tracer, options); + assert.ok(root instanceof RootSpan); + }); + }); + + /** + * Should get span list from rootspan instance + */ + describe('get spans()', () => { + it('should get span list from rootspan instance', () => { + const root = new RootSpan(tracer); + // TODO: Suggetion: make sure that root.spans.length is 1, + // and that it's the same as the earlier (shadowed) span object + root.start(); + const span = root.startChildSpan('spanName', 'spanType'); + assert.strictEqual(root.spans.length, 1); + assert.strictEqual(span, root.spans[0]); + + for (const span of root.spans) { + assert.ok(span instanceof Span); + } + }); + }); + + /** + * Should get trace id from rootspan instance + */ + describe('new traceId()', () => { + it('should get trace id from rootspan instance', () => { + const root = new RootSpan(tracer); + assert.equal(root.traceId, root.spanContext.traceId); + }); + }); + + /** + * Should create and start a RootSpan instance + */ + describe('start()', () => { + it('should start a RootSpan instance', () => { + const root = new RootSpan(tracer); + root.start(); + assert.ok(root.started); + }); + }); + + /** + * Should create and start a new span instance + */ + describe('startSpan()', () => { + let root, span; + + before(() => { + root = new RootSpan(tracer); + root.start(); + span = root.startChildSpan('spanName', 'spanType'); + }); + + it('should create span instance', () => { + assert.ok(span instanceof Span); + }); + + it('should start a span instance', () => { + assert.ok(span.started); + }); + }); + + /** + * Should not start a span from a not started rootspan + */ + describe('startSpan() before start rootspan', () => { + it('should not create span', () => { + const root = new RootSpan(tracer); + const span = root.startChildSpan('spanName', 'spanType'); + assert.strictEqual(span, null); + }); + }); + + /** + * Should not create a span from a ended rootspan + */ + describe('startSpan() after rootspan ended', () => { + it('should not create span', () => { + const root = new RootSpan(tracer); + root.start(); + root.end(); + const span = root.startChildSpan('spanName', 'spanType'); + assert.strictEqual(span, null); + }); + }); + + /** + * Should end a rootspan instance + */ + describe('end()', () => { + it('should end the rootspan instance', () => { + const root = new RootSpan(tracer); + root.start(); + root.end(); + assert.ok(root.ended); + }); + }); + + /** + * Should not end a rootspan which was not started + */ + describe('end() before start rootspan', () => { + it('should not end rootspan', () => { + const root = new RootSpan(tracer); + root.end(); + assert.ok(!root.ended); + }); + }); + + /** + * Should end all spans inside rootspan + */ + describe('end() before end all spans', () => { + it('should end all spans inside rootspan', () => { + const root = new RootSpan(tracer); + root.start(); + const span = root.startChildSpan('spanName', 'spanType'); + root.end(); + + for (const span of root.spans) { + assert.ok(span.ended); + } + }); + }); + + + /** + * Should add an attrinbutes + */ + describe('addAtribute()', () => { + it('should add an attribute', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + ['String', 'Number', 'Boolean'].map(attType => { + rootSpan.addAttribute('testKey' + attType, 'testValue' + attType); + assert.equal( + rootSpan.attributes['testKey' + attType], 'testValue' + attType); + }); + }); + }); + + /** + * Should add an annotation + */ + describe('addAnnotation()', () => { + it('should add an annotation', () => { + // tslint:disable:no-any + function instanceOfAnnotation(object: any): object is Annotation { + return 'description' in object && 'timestamp' in object && + 'attributes' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + rootSpan.addAnnotation('description test', Date.now(), {} as Attributes); + + assert.ok(rootSpan.annotations.length > 0); + assert.ok(instanceOfAnnotation(rootSpan.annotations[0])); + }); + }); + + /** + * Should add a Link. + */ + describe('addLink()', () => { + it('should add a Link', () => { + // tslint:disable:no-any + function instanceOfLink(object: any): object is Link { + return 'traceId' in object && 'spanId' in object && 'type' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + const LINK_TYPE = 'CHILD_LINKED_SPAN'; + rootSpan.addLink(rootSpan.traceId, span.id, LINK_TYPE); + + assert.ok(rootSpan.links.length > 0); + assert.ok(instanceOfLink(rootSpan.links[0])); + }); + }); + + /** + * Should add a Message Event. + */ + describe('addMessageEvent()', () => { + it('should add a Message Event', () => { + // tslint:disable:no-any + function instanceOfLink(object: any): object is Link { + return 'type' in object && 'id' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + rootSpan.addMessageEvent('TYPE_UNSPECIFIED', 'message_event_test_id'); + + assert.ok(rootSpan.messageEvents.length > 0); + assert.ok(instanceOfLink(rootSpan.messageEvents[0])); + }); + }); +}); diff --git a/packages/opencensus-core/test/test-sampler.ts b/packages/opencensus-core/test/test-sampler.ts new file mode 100644 index 000000000..d7dc1195c --- /dev/null +++ b/packages/opencensus-core/test/test-sampler.ts @@ -0,0 +1,87 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import {RootSpan} from '../src/trace/model/root-span'; +import {Tracer} from '../src/trace/model/tracer'; +import {Sampler} from '../src/trace/sampler/sampler'; + +const tracer = new Tracer(); + +describe('Sampler', () => { + /** + * Should return true + */ + describe('shouldSample() always', () => { + it('should return true', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler(); + sampler.always(); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.ok(samplerShouldSampler); + }); + it('should return a always sampler for 1', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler().probability(1); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.strictEqual(sampler.description, 'always'); + assert.ok(samplerShouldSampler); + }); + it('should return a always sampler for >1', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler().probability(100); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.strictEqual(sampler.description, 'always'); + assert.ok(samplerShouldSampler); + }); + }); + /** + * Should return false + */ + describe('shouldSample() never', () => { + it('should return false', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler(); + sampler.never(); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.ok(!samplerShouldSampler); + }); + it('should return a never sampler for 0', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler().probability(0); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.strictEqual(sampler.description, 'never'); + assert.ok(!samplerShouldSampler); + }); + it('should return a never sampler for negative value', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler().probability(-1); + const samplerShouldSampler = sampler.shouldSample(root.traceId); + assert.strictEqual(sampler.description, 'never'); + assert.ok(!samplerShouldSampler); + }); + }); + + describe('shouldSample() never', () => { + it('should return a probability sampler', () => { + const root = new RootSpan(tracer); + const sampler = new Sampler().probability(0.7); + assert.ok(sampler.description.indexOf('probability') >= 0); + }); + }); +}); \ No newline at end of file diff --git a/packages/opencensus-core/test/test-span.ts b/packages/opencensus-core/test/test-span.ts new file mode 100644 index 000000000..0e987ca39 --- /dev/null +++ b/packages/opencensus-core/test/test-span.ts @@ -0,0 +1,262 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import * as mocha from 'mocha'; + +import {RootSpan} from '../src/trace/model/root-span'; +import {Span} from '../src/trace/model/span'; +import {Tracer} from '../src/trace/model/tracer'; +import {Annotation, Attributes, Link, MessageEvent} from '../src/trace/model/types'; + + +// TODO: we should evaluate a way to merge similar test cases between span and +// rootspan + +const tracer = new Tracer(); + +describe('Span', () => { + /** + * Should create a span + */ + describe('new Span()', () => { + it('should create a Span instance', () => { + const rootSpan = new RootSpan(tracer); + const span = new Span(rootSpan); + assert.ok(span instanceof Span); + }); + }); + + /** + * Should return the Trace ID + */ + describe('get traceId()', () => { + it('should return the trace id', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + const span = new Span(rootSpan); + assert.equal(span.traceId, rootSpan.traceId); + }); + }); + + /** + * Should the span context of span + */ + describe('get spanContext', () => { + it('should the span context of span', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + const context = span.spanContext; + + assert.equal(context.traceId, rootSpan.traceId); + assert.equal(context.spanId, span.id); + assert.equal(context.options, 1); + }); + }); + + /** + * startTime, endTime and durantion proprieties called before start() - no + * clock instance created + */ + describe('get time properties before start()', () => { + let span; + before(() => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + span = new Span(rootSpan); + }); + it('should get startTime() return null', () => { + assert.strictEqual(span.startTime, null); + }); + it('should get endTime() return null', () => { + assert.strictEqual(span.endTime, null); + }); + it('should get duration() return null', () => { + assert.strictEqual(span.duration, null); + }); + }); + + /** + * Should start a span instance + */ + describe('start()', () => { + it('should start a span instance', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + assert.ok(span.started); + }); + }); + + /** + * Should not change the initial startTime + */ + describe('start() an already started span', () => { + it('should not change the initial startTime', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + const span = new Span(rootSpan); + span.start(); + const initialStartTime = span.startTime; + span.start(); + + assert.equal(span.startTime, initialStartTime); + }); + }); + + /** + * Should end a span instance + */ + describe('end()', () => { + it('should end a span instance', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + span.end(); + + assert.ok(span.ended); + }); + }); + + /** + * Should not end a span instance + */ + describe('end() before start()', () => { + it('should not end a span instance', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.end(); + + assert.ok(!span.ended); + }); + }); + + /** + * Should not change the endTime + */ + describe('end() an already ended span', () => { + it('should not change the endTime', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + const span = new Span(rootSpan); + span.start(); + span.end(); + const initialEndTime = span.endTime; + span.end(); + + assert.equal(span.endTime.getTime(), initialEndTime.getTime()); + }); + }); + + /** + * Should add an attrinbutes + */ + describe('addAtribute()', () => { + it('should add an attribute', () => { + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + ['String', 'Number', 'Boolean'].map(attType => { + span.addAttribute('testKey' + attType, 'testValue' + attType); + assert.equal( + span.attributes['testKey' + attType], 'testValue' + attType); + }); + }); + }); + + /** + * Should add an annotation + */ + describe('addAnnotation()', () => { + it('should add an annotation', () => { + // tslint:disable:no-any + function instanceOfAnnotation(object: any): object is Annotation { + return 'description' in object && 'timestamp' in object && + 'attributes' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + span.addAnnotation('description test', Date.now(), {} as Attributes); + + assert.ok(span.annotations.length > 0); + assert.ok(instanceOfAnnotation(span.annotations[0])); + }); + }); + + /** + * Should add a Link. + */ + describe('addLink()', () => { + it('should add a Link', () => { + // tslint:disable:no-any + function instanceOfLink(object: any): object is Link { + return 'traceId' in object && 'spanId' in object && 'type' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + const LINK_TYPE = 'PARENT_LINKED_SPAN'; + span.addLink(span.traceId, rootSpan.id, LINK_TYPE); + + assert.ok(span.links.length > 0); + assert.ok(instanceOfLink(span.links[0])); + }); + }); + + /** + * Should add a Message Event. + */ + describe('addMessageEvent()', () => { + it('should add a Message Event', () => { + // tslint:disable:no-any + function instanceOfLink(object: any): object is Link { + return 'type' in object && 'id' in object; + } + + const rootSpan = new RootSpan(tracer); + rootSpan.start(); + + const span = new Span(rootSpan); + span.start(); + + span.addMessageEvent('TYPE_UNSPECIFIED', 'message_event_test_id'); + + assert.ok(span.messageEvents.length > 0); + assert.ok(instanceOfLink(span.messageEvents[0])); + }); + }); +}); \ No newline at end of file diff --git a/packages/opencensus-core/test/test-tracer.ts b/packages/opencensus-core/test/test-tracer.ts new file mode 100644 index 000000000..a5d486ed2 --- /dev/null +++ b/packages/opencensus-core/test/test-tracer.ts @@ -0,0 +1,287 @@ +/** + * Copyright 2018, OpenCensus 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. + */ + +import * as assert from 'assert'; +import {EventEmitter} from 'events'; +import * as uuid from 'uuid'; + +import {randomSpanId} from '../src/internal/util'; +import {TracerConfig} from '../src/trace/config/types'; +import {RootSpan} from '../src/trace/model/root-span'; +import {Span} from '../src/trace/model/span'; +import {Tracer} from '../src/trace/model/tracer'; +import * as types from '../src/trace/model/types'; +import {OnEndSpanEventListener} from '../src/trace/model/types'; + +class OnEndSpanClass implements OnEndSpanEventListener { + /** Counter for test use */ + testCount = 0; + /** Happens when a span is ended */ + onEndSpan(span: RootSpan): void { + this.testCount++; + } +} + +const defaultConfig: TracerConfig = { + samplingRate: 1.0 // always sampler +}; + +describe('Tracer', () => { + const options = {name: 'test'}; + + /** Should create a Tracer instance */ + describe('new Tracer()', () => { + it('should create a Tracer instance', () => { + const tracer = new Tracer(); + assert.ok(tracer instanceof Tracer); + }); + }); + + /** Should get/set the current RootSpan from tracer instance */ + describe('get/set currentRootSpan()', () => { + let tracer, rootSpan; + before(() => { + tracer = new Tracer(); + rootSpan = new RootSpan(tracer); + tracer.currentRootSpan = rootSpan; + }); + it('should get the current RootSpan from tracer instance', () => { + assert.ok(tracer.currentRootSpan instanceof RootSpan); + }); + it('should set the current RootSpan from tracer instance', () => { + assert.strictEqual(tracer.currentRootSpan, rootSpan); + }); + }); + + /** Should return a started tracer instance */ + describe('start()', () => { + let tracerStarted; + before(() => { + const tracer = new Tracer(); + assert.strictEqual(tracer.active, false); + tracerStarted = tracer.start(defaultConfig); + }); + it('should return a tracer instance', () => { + assert.ok(tracerStarted instanceof Tracer); + }); + + it('the trace was started', () => { + assert.strictEqual(tracerStarted.active, true); + }); + }); + + /** Should return an OnEndSpanEventListener list */ + describe('registerEndSpanListener() / get eventListeners()', () => { + let tracer, onEndSpan; + before(() => { + tracer = new Tracer(); + onEndSpan = new OnEndSpanClass(); + tracer.registerEndSpanListener(onEndSpan); + }); + + it('should register a new OnEndSpanEventListener on listners list', () => { + const listner = tracer.eventListeners[0]; + assert.strictEqual(tracer.eventListeners.length, 1); + assert.strictEqual(listner, onEndSpan); + }); + + it('should return an OnEndSpanEventListener list', () => { + for (const listner of tracer.eventListeners) { + assert.ok(listner instanceof OnEndSpanClass); + } + }); + }); + + /** Should stop the trace instance */ + describe('stop()', () => { + it('should stop the trace instance', () => { + const tracer = new Tracer(); + assert.strictEqual(tracer.active, false); + tracer.start(defaultConfig); + assert.strictEqual(tracer.active, true); + tracer.stop(); + assert.strictEqual(tracer.active, false); + }); + }); + + + /** Should create and start a new RootSpan instance */ + describe('startRootSpan()', () => { + let rootSpanLocal; + before(() => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + tracer.startRootSpan(null, (rootSpan) => { + rootSpanLocal = rootSpan; + }); + }); + it('should create a new RootSpan instance', () => { + assert.ok(rootSpanLocal instanceof RootSpan); + }); + it('should start the rootSpan', () => { + assert.ok(rootSpanLocal.started); + }); + }); + + /** Should create and start a new RootSpan instance with options */ + describe('startRootSpan() with options', () => { + let rootSpanLocal; + before(() => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + tracer.startRootSpan(options, (rootSpan) => { + rootSpanLocal = rootSpan; + }); + }); + it('should create a new RootSpan instance', () => { + assert.ok(rootSpanLocal instanceof RootSpan); + }); + it('should start the rootSpan', () => { + assert.ok(rootSpanLocal.started); + }); + }); + + /** Should not start the new RootSpan instance */ + describe('startRootSpan() with sampler never', () => { + it('should not start the new RootSpan instance', () => { + const tracer = new Tracer(); + const config = {samplingRate: 0} as TracerConfig; + tracer.start(config); + tracer.startRootSpan(options, (rootSpan) => { + assert.strictEqual(rootSpan, null); + }); + }); + }); + + /** Should not create the new RootSpan instance */ + describe('startRootSpan() before start()', () => { + it('should not create the new RootSpan instance, tracer not started', + () => { + const tracer = new Tracer(); + assert.strictEqual(tracer.active, false); + tracer.startRootSpan(options, (rootSpan) => { + assert.equal(rootSpan, null); + }); + }); + }); + + describe('startRootSpan() with context propagation', () => { + const traceOptions = {name: 'rootName', type: 'spanType'} as + types.TraceOptions; + + it('should create new RootSpan instance, no propagation', () => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + tracer.startRootSpan(traceOptions, (rootSpan) => { + assert.ok(rootSpan); + assert.strictEqual(rootSpan.name, traceOptions.name); + assert.strictEqual(rootSpan.type, traceOptions.type); + }); + }); + + const spanContextPropagated = { + traceId: uuid.v4().split('-').join(''), + spanId: randomSpanId(), + options: 0x1 + } as types.SpanContext; + + + it('should create the new RootSpan with propagation', () => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + traceOptions.spanContext = spanContextPropagated; + tracer.startRootSpan(traceOptions, (rootSpan) => { + assert.ok(rootSpan); + assert.strictEqual(rootSpan.name, traceOptions.name); + assert.strictEqual(rootSpan.type, traceOptions.type); + assert.strictEqual(rootSpan.traceId, spanContextPropagated.traceId); + assert.strictEqual(rootSpan.parentSpanId, spanContextPropagated.spanId); + }); + }); + + it('should create the new RootSpan with no propagation', () => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + traceOptions.spanContext.options = 0x0; + tracer.startRootSpan(traceOptions, (rootSpan) => { + assert.ok(rootSpan); + assert.strictEqual(rootSpan.name, traceOptions.name); + assert.strictEqual(rootSpan.type, traceOptions.type); + assert.notEqual(rootSpan.traceId, spanContextPropagated.traceId); + assert.notEqual(rootSpan.parentSpanId, spanContextPropagated.spanId); + }); + }); + }); + + + /** Should set the current root span to null */ + describe('clearCurrentRootSpan()', () => { + it('should set the current root span to null', () => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + tracer.startRootSpan(options, (rootSpan) => { + tracer.clearCurrentTrace(); + assert.strictEqual(tracer.currentRootSpan, null); + }); + }); + }); + + + /** Should create and start a Span instance into a rootSpan */ + describe('startChildSpan()', () => { + let span: types.Span; + before(() => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + tracer.startRootSpan(options, (rootSpan) => { + span = tracer.startChildSpan('spanName', 'spanType'); + }); + }); + it('should create a Span instance', () => { + assert.ok(span instanceof Span); + }); + it('should start a span', () => { + assert.ok(span.started); + assert.strictEqual(span.name, 'spanName'); + assert.strictEqual(span.type, 'spanType'); + }); + }); + + /** Should not create a Span instance */ + describe('startChildSpan() before startRootSpan()', () => { + it('should not create a Span instance, without a rootspan', () => { + const tracer = new Tracer(); + tracer.start(defaultConfig); + const span = tracer.startChildSpan('spanName', 'spanType'); + assert.equal(span, null); + }); + }); + + /** Should run eventListeners when the rootSpan ends */ + describe('onEndSpan()', () => { + it('should run eventListeners when the rootSpan ends', () => { + const tracer = new Tracer(); + const eventListener = new OnEndSpanClass(); + tracer.registerEndSpanListener(eventListener); + tracer.start(defaultConfig); + + tracer.startRootSpan(options, (rootSpan) => { + rootSpan.end(); + assert.equal(eventListener.testCount, tracer.eventListeners.length); + }); + }); + }); +}); \ No newline at end of file diff --git a/packages/opencensus-core/tsconfig.json b/packages/opencensus-core/tsconfig.json new file mode 100644 index 000000000..fc69b49c7 --- /dev/null +++ b/packages/opencensus-core/tsconfig.json @@ -0,0 +1,24 @@ +{ + "extends": "./node_modules/gts/tsconfig-google.json", + "compilerOptions": { + "rootDir": ".", + "outDir": "build", + "allowUnreachableCode": true, + "noUnusedParameters": false, + "noImplicitAny": false, + "noImplicitThis": false, + "noEmitOnError": false, + "pretty": true, + "strict": false, + "module": "commonjs", + "target": "es6", + "sourceMap": false + }, + "include": [ + "src/**/*.ts", + "test/**/*.ts" + ], + "exclude": [ + "node_modules" + ] +}