v4.0.0

Warning

Major refactoring with breaking changes.

Breaking

• Relocate ccache wrapper and parser to a dedicated package
• Rework command-line argument parsing with Cobra, Viper and Venom

Added

• Add Github Actions workflow to build and publish multi-platform Docker images
• Add a contributing guide
• Setup Hashicorp Copywrite to automate license header management
• Allow configuring the exporter via command-line flags, environment variables and configuration file
• Add subcommand to display the exporter and ccache versions
• Automate release creation and artifact upload

Changed

• Require Go 1.23
• Switch base Docker image from Alpine Linux to Debian 12 Bookworm
• Update example Docker Compose stack
• Update Prometheus' Makefile.common and Promu configuration
• Update CI workflow, move vulncheck step to a dedicated workflow
• Publish Docker images to the Github Container Registry (ghcr.io)

v3.1.0

Added

• Add metrics for remote storage (e.g. Redis)
• Add test cases for Debian 12 and Ubuntu 24.04
• Update configuration parser to support new output format for max_size values
• Add Go vulnerability checker to the CI workflow

Changed

• Require Go 1.22
• Refactor and document testdata generation utilities
• Update example Docker Compose stack and dashboard

v3.0.0

Major refactoring with breaking changes.

Added

• Add support for ccache 3.7 and above, that comes with a new format for machine-readable statistics
• Add utilities to generate reference testdata using ccache on long-term-support Debian and Ubuntu releases

Changed

• Switch to main as the default Git branch
• Refactor ccache wrapper and shell abstractions to handle both formats:
  • pre-3.7 mixed configuration/statistics output (--show-stats)
  • 3.7 and above statistics (--print-stats) output
• Split Configuration and Statistics data
• Add a dedicated configuration parser
• Relocate Prometheus collector
• Bump Go to 1.19 for CI, Promu and Docker builds
• Switch to Github Actions
• Rewrite README and CHANGELOG in Markdown
• Refactor tests and test helpers to make it easier to add golden test cases
• Update Prometheus Makefile library

v3.0.0-alpha.2

Release 3.0.0-alpha.2

v2.0.0

Major refactoring.

Added

• Allow to specify the path to the ccache binary
• Setup promu from cross-platform exporter builds
• Add license information to all Go source headers
• Document all exported types and methods

Changed

• Explicitly handle or silence errors
• Relocate parser code to this repository
• Refactor and simplify parser tests by switching to table-driven testing
• Refactor the codebase to adopt a flat package structure, with more idiomatic
  type and method names
• Trim build paths

v2.0.0-rc1

Release v2.0.0-rc1

v1.1.0

Add support for ccache 3.5

v1.0.0

Initial release