How to export logs on grpc endpoint?

[bangbaew]

According to the Official OpenTelemetry Website , if I set OTEL_EXPORTER_OTLP_ENDPOINT env, it will apply to all OTEL_EXPORTER_OTLP_TRACES_ENDPOINT, OTEL_EXPORTER_OTLP_METRICS_ENDPOINT, OTEL_EXPORTER_OTLP_LOGS_ENDPOINT, but this crate seems to apply to only OTEL_EXPORTER_OTLP_TRACES_ENDPOINT as shown on startup, I wanna export Axum logs to OpenTelemetry Collector endpoint, which is then exported to Loki.

I could do this in Actix Web using opentelemetry_appender_log crate, I wonder how to achieve this in Axum?

[davidB]

I could do this in Actix Web using opentelemetry_appender_log crate, I wonder how to achieve this in Axum?

Currently, I don't know. I'll look at how actixweb does (I'm also interested, but currently I used a dedicated agent fluentd/fluentbit for logs). And last time I look at opentelemetry on rust, metrics was is beta iirc, and logs in alpha or not supported. From Rust | OpenTelemetry: metrics & log are in alpha, and traces in beta.

PR is welcome, if you want to contribute.

[davidB]

Maybe this crate could do the work (not tested): opentelemetry-appender-tracing - crates.io: Rust Package Registry

[cozyGalvinism]

I created a PR for adding a log exporter using that opentelemetry-appender-tracing crate (#333).

[davidB]

Thanks to @cozyGalvinism,

His PR was merged and released as part of init-tracing-opentelemetry 0.37.