Setting RUST_LOG=error does not displays some metrics

[manaljain6667]

Describe the bug
Setting RUST_LOG=error does not displays some metrics

To Reproduce
Steps to reproduce the behavior:

Run following command from router/examples/telemetry to reproduce the behavior:

RUST_LOG=error cargo run -- -s ../graphql/supergraph.graphql -c otlp.router.yaml

when setting RUST_LOG=error

when setting RUST_LOG=info

[xuorig]

This is most likely due to the Metric's layer which uses tracing events for metrics. If the EnvFilter does not enable the event the metrics layer won't see it.

[harshitkumar31]

Hi @xuorig , in our case we want to see all the metrics exposed in the prometheus route irrespective of the log level set.
Is there a way to achieve this? Because logs can get pretty chatty, and we'd still want to be able to monitor the health and these metrics for router.

[bnjjj]

We now have new macros to generate metrics and it won't be affected by the log level anymore. We have to migrate all our current metrics to that new mechanism