retrace takes a stdouttrace-generated JSON file on stdin and re-exports the traces via oltptracehttp.

This allows you to capture traces offline or in environments where it's difficult to use otel in the intended way.

For example, if you have a file produced by stdouttrace at /tmp/trace.json and want to view it in otel-desktop-viewer, you can do this:

$ otel-desktop-viewer &

$ export OTEL_EXPORTER_OTLP_ENDPOINT="https://localhost:4318"
$ export OTEL_TRACES_EXPORTER="otlp"
$ export OTEL_EXPORTER_OTLP_PROTOCOL="http/protobuf"

$ retrace < /tmp/trace.json

go install github.com/jonjohnsonjr/retrace@latest