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NIST Misses 2024 Deadline to Clear NVD Backlog
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This is the core npm package for Zipkin. It contains the public API which is used by the various plugins (instrumentations and transports).
We include TypeScript definition file which you can also use as documentation.
Please always make sure that TypeScript type definitions match source code modifications.
const zipkin = require('zipkin');
// In Node.js, the recommended context API to use is zipkin-context-cls.
const CLSContext = require('zipkin-context-cls');
const ctxImpl = new CLSContext(); // if you want to use CLS
const xtxImpl = new zipkin.ExplicitContext(); // Alternative; if you want to pass around the context manually
// Tracer will be a one to many relationship with instrumentation that use it (like express)
const tracer = new zipkin.Tracer({
ctxImpl,
recorder: new zipkin.ConsoleRecorder(), // For easy debugging. You probably want to use an actual implementation, like Kafka or Scribe.
sampler: new zipkin.sampler.CountingSampler(0.01), // sample rate 0.01 will sample 1 % of all incoming requests
traceId128Bit: true, // to generate 128-bit trace IDs. 64-bit (false) is default
localServiceName: 'my-service' // indicates this node in your service graph
});
Sometimes you have activity that precedes a remote request that you want to
capture in a trace. tracer.local
can time an operation, placing a
corresponding span ID in scope so that any downstream commands end up in the
same trace.
Here's an example tracing a synchronous function:
// A span representing checkout completes before result is returned
const result = tracer.local('checkout', () => {
return someComputation();
});
Here's an example tracing a function that returns a promise:
// A span is in progress and completes when the promise is resolved.
const result = tracer.local('checkout', () => {
return createAPromise();
});
FAQs
The core tracer for Zipkin JS
The npm package zipkin receives a total of 45,287 weekly downloads. As such, zipkin popularity was classified as popular.
We found that zipkin demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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