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| Original file line number | Diff line number | Diff line change |
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| # Overview | ||
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| This is a simple example that demonstrates tracing HTTP request, with an app written in TypeScript and transpiled to ES Modules. | ||
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| ## Installation | ||
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| ```sh | ||
| # from this directory | ||
| npm install | ||
| npm run build | ||
| npm start | ||
| ``` | ||
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| In a separate terminal, `curl localhost:3000`. | ||
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| See two spans in the console (one manual, one for http instrumentation) | ||
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| ## Useful links | ||
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| - For more information on OpenTelemetry, visit: <https://opentelemetry.io/> | ||
| - For more information on OpenTelemetry for Node.js, visit: <https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-trace-node> | ||
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| ## LICENSE | ||
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| Apache License 2.0 |
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| import { registerInstrumentations } from '@opentelemetry/instrumentation'; | ||
| import { trace, DiagConsoleLogger, DiagLogLevel, diag } from '@opentelemetry/api'; | ||
| import { HttpInstrumentation } from '@opentelemetry/instrumentation-http'; | ||
| import { NodeTracerProvider } from '@opentelemetry/sdk-trace-node'; | ||
| import { | ||
| ConsoleSpanExporter, | ||
| SimpleSpanProcessor, | ||
| } from '@opentelemetry/sdk-trace-base'; | ||
| import { Resource } from '@opentelemetry/resources'; | ||
| import { SemanticResourceAttributes } from '@opentelemetry/semantic-conventions'; | ||
| import http from 'http'; | ||
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| diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG); | ||
| const tracerProvider = new NodeTracerProvider({ | ||
| resource: new Resource({ | ||
| [SemanticResourceAttributes.SERVICE_NAME]: 'esm-http-ts-example', | ||
| }), | ||
| }); | ||
| const exporter = new ConsoleSpanExporter(); | ||
| const processor = new SimpleSpanProcessor(exporter); | ||
| tracerProvider.addSpanProcessor(processor); | ||
| tracerProvider.register(); | ||
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| registerInstrumentations({ | ||
| instrumentations: [new HttpInstrumentation()], | ||
| }); | ||
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| const hostname = '0.0.0.0'; | ||
| const port = 3000; | ||
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| const server = http.createServer((req, res) => { | ||
| res.statusCode = 200; | ||
| res.setHeader('Content-Type', 'text/plain'); | ||
| const tracer = trace.getTracer('esm-tracer'); | ||
| tracer.startActiveSpan('manual', span => { | ||
| span.end(); | ||
| }); | ||
| res.end('Hello, World!\n'); | ||
| }); | ||
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| server.listen(port, hostname, () => { | ||
| console.log(`Server running at http://${hostname}:${port}/`); | ||
| }); |
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| { | ||
| "name": "esm-http-ts", | ||
| "private": true, | ||
| "version": "0.38.0", | ||
| "description": "Example of HTTP integration with OpenTelemetry using ESM and TypeScript", | ||
| "main": "build/index.js", | ||
| "type": "module", | ||
| "scripts": { | ||
| "build": "tsc --build", | ||
| "start": "node --experimental-loader=@opentelemetry/instrumentation/hook.mjs ./build/index.js" | ||
| }, | ||
| "repository": { | ||
| "type": "git", | ||
| "url": "git+ssh://[email protected]/open-telemetry/opentelemetry-js.git" | ||
| }, | ||
| "keywords": [ | ||
| "opentelemetry", | ||
| "http", | ||
| "tracing", | ||
| "esm", | ||
| "typescript" | ||
| ], | ||
| "engines": { | ||
| "node": ">=14" | ||
| }, | ||
| "author": "OpenTelemetry Authors", | ||
| "license": "Apache-2.0", | ||
| "bugs": { | ||
| "url": "https://github.com/open-telemetry/opentelemetry-js/issues" | ||
| }, | ||
| "homepage": "https://github.com/open-telemetry/opentelemetry-js/tree/main/examples/", | ||
| "dependencies": { | ||
| "@opentelemetry/api": "1.4.0", | ||
| "@opentelemetry/exporter-trace-otlp-proto": "0.38.0", | ||
| "@opentelemetry/instrumentation": "0.38.0", | ||
| "@opentelemetry/instrumentation-http": "0.38.0", | ||
| "@opentelemetry/resources": "1.9.1", | ||
| "@opentelemetry/sdk-trace-base": "1.9.1", | ||
| "@opentelemetry/sdk-trace-node": "1.9.1", | ||
| "@opentelemetry/semantic-conventions": "1.9.1" | ||
| } | ||
| } |
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| { | ||
| "compilerOptions": { | ||
| /* Language and Environment */ | ||
| "target": "ES2020" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */, | ||
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| /* Modules */ | ||
| "module": "ESNext" /* Specify what module code is generated. */, | ||
| "rootDir": "." /* Specify the root folder within your source files. */, | ||
| "moduleResolution": "node" /* Specify how TypeScript looks up a file from a given module specifier. */, | ||
| "resolveJsonModule": true /* Enable importing .json files. */, | ||
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| /* Emit */ | ||
| "outDir": "build" /* Specify an output folder for all emitted files. */, | ||
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| /* Interop Constraints */ | ||
| "allowSyntheticDefaultImports": true /* Allow 'import x from y' when a module doesn't have a default export. */, | ||
| "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */, | ||
| "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */, | ||
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| /* Completeness */ | ||
| "skipLibCheck": true /* Skip type checking all .d.ts files. */ | ||
| }, | ||
| "include": ["**/*.ts", "**/*.js", "*.config.js"], | ||
| "exclude": ["node_modules"] | ||
| } |
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