b3-propagation
opentelemetry-js-contrib
b3-propagation | opentelemetry-js-contrib | |
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3 | 8 | |
518 | 602 | |
1.0% | 2.3% | |
2.7 | 9.5 | |
3 months ago | 5 days ago | |
TypeScript | ||
Apache License 2.0 | Apache License 2.0 |
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b3-propagation
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OpenTelemetry in 2023
I've been playing with OTEL for a while, with a few backends like Jaeger and Zipkin, and am trying to figure out a way to perform end to end timing measurements across a graph of services triggered by any of several events.
Consider this scenario: There is a collection of services that talk to one another, and not all use HTTP. Say agent A0 makes a connection to agent A1, this is observed by service S0 which triggers service S1 to make calls to S2 and S3, which propagate elsewhere and return answers.
If we limit the scope of this problem to services explicitly making HTTP calls to other services, we can easily use the Propagators API [1] and use X-B3 headers [2] to propagate the trace context (trace ID, span ID, parent span ID) across this graph, from the origin through to the destination and back. This allows me to query the metrics collector (Jaeger or Zipkin) using this trace ID, look at the timestamps originating at the various services and do a T_end - T_start to determine the overall time taken by one call for a round trip across all the related services.
However, this breaks when a subset of these functions cannot propagate the B3 trace IDs for various reasons (e.g., a service is watching a specific state and acts when the state changes). I've been looking into OTEL and other related non-OTEL ways to capture metrics, but it appears there's not much research into this area though it does not seem like a unique or new problem.
Has anyone here looked at this scenario, and have you had any luck with OTEL or other mechanisms to get results?
[1] https://opentelemetry.io/docs/specs/otel/context/api-propaga...
[2] https://github.com/openzipkin/b3-propagation
[3] https://www.w3.org/TR/trace-context/
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OpenTelemetry and Istio: Everything you need to know
(Note that OpenTelemetry uses, by default, the W3C context propagation specification, while Istio uses the B3 context propagation specification – this can be modified).
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Spring Cloud Sleuth in action
The default format for context propagation is B3 so we use headers X-B3-TraceId and X-B3-SpanId
opentelemetry-js-contrib
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OpenTelemetry in 2023
[2] https://github.com/open-telemetry/opentelemetry-js-contrib/t...
- OpenTelemetry-based traces for every web page with zero code change.
- How to trace database query with OpenTelemetry and Zipkin for a Node.js app?
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How to Instrument AWS Services with OpenTelemetry
@opentelemetry/instrumentation-aws-lambda
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How to solve "Cannot redefine property: handler" on AWS Lambda
As suggested in both opentelemetry-js-contrib and aws-otel-lambda issues, the solution is changing ES6 export to CommonJS module.exports.
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How To Use OpenTelemetry With AWS Lambda
More information about this can be found here and in the instrumentation docs.
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GraphQL - Diving Deep
Opentelemetry has recently made support for GraphQL available. You can find it here
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The Stack #3
Now, the exciting thing is that there is now a reference implementation to the same using GraphQL which you can find here and also an example to help you out with the same here
What are some alternatives?
trace-context-w3c - W3C Trace Context purpose of and what kind of problem it came to solve.
apollo-server - 🌍 Spec-compliant and production ready JavaScript GraphQL server that lets you develop in a schema-first way. Built for Express, Connect, Hapi, Koa, and more.
zipkin - Zipkin is a distributed tracing system
mercurius - Implement GraphQL servers and gateways with Fastify
spring-cloud-sleuth-in-action - 🍀 Spring Cloud Sleuth in Action
Hasura - Blazing fast, instant realtime GraphQL APIs on your DB with fine grained access control, also trigger webhooks on database events.
odigos - Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF
react-relay - Relay is a JavaScript framework for building data-driven React applications.
community - OpenTelemetry community content
Hoppscotch - Open source API development ecosystem.
oteps - OpenTelemetry Enhancement Proposals
aws-otel-lambda - AWS Distro for OpenTelemetry - AWS Lambda