Although we try not to break functionality, we reserve the right to reorganize the code at will and may occasionally cause breaks if they are warranted. As such we expect the tag of this module will stay less than v1.0.0.

For any major changes we will try to give advance notice in the CHANGES section of Vault's CHANGELOG.md.

Metrics Emission and Compatibility

This module can emit metrics using either github.com/armon/go-metrics or github.com/hashicorp/go-metrics. Choosing between the libraries is controlled via build tags.

Build Tags

armonmetrics - Using this tag will cause metrics to be routed to armon/go-metrics
hashicorpmetrics - Using this tag will cause all metrics to be routed to hashicorp/go-metrics

If no build tag is specified, the default behavior is to use armon/go-metrics.

Deprecating armon/go-metrics

Emitting metrics to armon/go-metrics is officially deprecated. Usage of armon/go-metrics will remain the default until mid-2025 with opt-in support continuing to the end of 2025.

Migration To migrate an application currently using the older armon/go-metrics to instead use hashicorp/go-metrics the following should be done.

Upgrade libraries using armon/go-metrics to consume hashicorp/go-metrics/compat instead. This should involve only changing import statements. All repositories in the hashicorp namespace will be migrated by February of 2025.
Update the application's library dependencies to those that have the compatibility layer configured.
Update the application to use hashicorp/go-metrics for configuring metrics export instead of armon/go-metrics
- Replace all application imports of github.com/armon/go-metrics with github.com/hashicorp/go-metrics
- Instrument your build system to build with the hashicorpmetrics tag.