https://github.com/eddeccc/span-exporter-showcase

https://github.com/eddeccc/span-exporter-showcase

Last synced: 28 days ago
JSON representation

• Host: GitHub
• URL: https://github.com/eddeccc/span-exporter-showcase
• Owner: EddeCCC
• License: apache-2.0
• Created: 2024-03-04T09:35:03.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-03-04T10:42:58.000Z (10 months ago)
• Last Synced: 2024-03-04T12:01:53.475Z (10 months ago)
• Language: Java
• Size: 79.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# span-exporter-showcase

## Origin

The project originates from [inspectit-eum-server](https://github.com/inspectIT/inspectit-ocelot-eum-server).

In summary, the server is used to receive data (metrics & traces) collected from browsers and process them as OpenTelemetry-data.

This showcase extracts only the part responsible for traces.

---

## Data flow

The showcase provides one REST endpoint: `/spans`

It expects to receive span proto data, which will be converted to OpenTelemetry SDK spans. 

After that, the SDK spans will be exported via OTLP to a collector.

## Data origin

The received span proto data is created by [opentelemetry-exporter-trace-otlp-http](https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/exporter-trace-otlp-http)

More precisely, we use this plugin to generate traces:

https://github.com/NovatecConsulting/boomerang-opentelemetry-plugin

There is an example for such data in the [test resources](src/test/resources/ot-trace-array-v0.48.0.json).

## Test case

The test class [OtlpGrpcTraceExporterIntTest](src/test/java/rocks/inspectit/oce/eum/server/exporters/tracing/OtlpGrpcTraceExporterIntTest.java) 

tries to send data to the `/spans` and checks if the expected trace data will be exported by OTLP.

The test `verifyTraceWithArrayValueSent()` fails with a `java.lang.ClassCastException`.