prometheus-opentelemetry-collector

[EXPERIMENTAL] A Prometheus-flavored OpenTelemetry Collector distribution built with the OpenTelemetry Collector Builder (OCB).

This repository is intentionally small. Its job is to define a curated collector build, generate the distribution during local builds and CI, and fail fast when component additions or version bumps stop compiling.

Goals

• Add Prometheus exporters that can be embedded as native collector components.
• Verify that the generated collector still compiles whenever dependencies or component selections change.

Repository layout

• builder-config.yaml: the single source of truth for the distribution
• receivers/: locally maintained integrations of Prometheus exporters as collector receivers
• Makefile: local entrypoints for generation, compile checks, and cleanup
• .github/workflows/build.yaml: CI that regenerates the collector and compiles the generated Go module
• .github/workflows/test.yaml: CI that tests local receiver modules

Generated sources and binaries live in _build/ and are not committed.

Local development

make gogenerate       # update generated receiver metadata
make check-metadata   # verify generated metadata is fresh
make test             # test local receiver modules
make check            # generate and compile the collector distribution
make build            # build the collector binary
make clean            # remove generated artifacts

Adding components or bumping versions safely

1. Edit builder-config.yaml.
2. For new local receivers, add metadata.yaml, doc.go, receiver README, and generated metadata files.
3. Run make gogenerate, make check-metadata, make test, and make check.