This module provides exporter for web and node to be used with opentelemetry-collector - last tested with version 0.16.0.
npm install --save @opentelemetry/exporter-collector-grpc
The CollectorTraceExporter in Node expects the URL to only be the hostname. It will not work with /v1/trace
.
const { BasicTracerProvider, SimpleSpanProcessor } = require('@opentelemetry/tracing');
const { CollectorTraceExporter } = require('@opentelemetry/exporter-collector-grpc');
const collectorOptions = {
serviceName: 'basic-service',
// url is optional and can be omitted - default is localhost:4317
url: '<collector-hostname>:<port>',
};
const provider = new BasicTracerProvider();
const exporter = new CollectorTraceExporter(collectorOptions);
provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
provider.register();
['SIGINT', 'SIGTERM'].forEach(signal => {
process.on(signal, () => provider.shutdown().catch(console.error));
});
By default, plaintext connection is used. In order to use TLS in Node.js, provide credentials
option like so:
const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const { BasicTracerProvider, SimpleSpanProcessor } = require('@opentelemetry/tracing');
const { CollectorTraceExporter } = require('@opentelemetry/exporter-collector-grpc');
const collectorOptions = {
serviceName: 'basic-service',
// url is optional and can be omitted - default is localhost:4317
url: '<collector-hostname>:<port>',
credentials: grpc.credentials.createSsl(),
};
const provider = new BasicTracerProvider();
const exporter = new CollectorTraceExporter(collectorOptions);
provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
provider.register();
['SIGINT', 'SIGTERM'].forEach(signal => {
process.on(signal, () => provider.shutdown().catch(console.error));
});
To use mutual authentication, pass to the createSsl()
constructor:
credentials: grpc.credentials.createSsl(
fs.readFileSync('./ca.crt'),
fs.readFileSync('./client.key'),
fs.readFileSync('./client.crt')
),
To generate credentials for mutual authentication, you can refer to the script used to generate certificates for tests here
The exporter can be configured to send custom metadata with each request as in the example below:
const grpc = require('@grpc/grpc-js');
const { BasicTracerProvider, SimpleSpanProcessor } = require('@opentelemetry/tracing');
const { CollectorTraceExporter } = require('@opentelemetry/exporter-collector-grpc');
const metadata = new grpc.Metadata();
// For instance, an API key or access token might go here.
metadata.set('k', 'v');
const collectorOptions = {
serviceName: 'basic-service',
// url is optional and can be omitted - default is localhost:4317
url: '<collector-hostname>:<port>',
metadata, // // an optional grpc.Metadata object to be sent with each request
};
const provider = new BasicTracerProvider();
const exporter = new CollectorTraceExporter(collectorOptions);
provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
provider.register();
['SIGINT', 'SIGTERM'].forEach(signal => {
process.on(signal, () => provider.shutdown().catch(console.error));
});
Note, that this will only work if TLS is also configured on the server.
The CollectorTraceExporter in Node expects the URL to only be the hostname. It will not work with /v1/metrics
. All options that work with trace also work with metrics.
const { MeterProvider } = require('@opentelemetry/metrics');
const { CollectorMetricExporter } = require('@opentelemetry/exporter-collector-grpc');
const collectorOptions = {
serviceName: 'basic-service',
// url is optional and can be omitted - default is localhost:4317
url: '<collector-hostname>:<port>',
};
const exporter = new CollectorMetricExporter(collectorOptions);
// Register the exporter
const provider = new MeterProvider({
exporter,
interval: 60000,
})
['SIGINT', 'SIGTERM'].forEach(signal => {
process.on(signal, () => provider.shutdown().catch(console.error));
});
// Now, start recording data
const meter = provider.getMeter('example-meter');
const counter = meter.createCounter('metric_name');
counter.add(10, { 'key': 'value' });
- Go to examples/collector-exporter-node
- run
npm run docker:start
- Open page at
http://localhost:9411/zipkin/
to observe the traces
- For more information on OpenTelemetry, visit: https://opentelemetry.io/
- For more about OpenTelemetry JavaScript: https://github.com/open-telemetry/opentelemetry-js
- For help or feedback on this project, join us in GitHub Discussions
Apache 2.0 - See LICENSE for more information.