otlp: Changelog¶

All notable changes to the charmlibs.interfaces.otlp library will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.1.0]¶

Initial release of charmlibs.interfaces.otlp
OtlpRequirer for consuming OTLP endpoints from a provider relation
OtlpProvider for publishing OTLP endpoints to requirer relations
OtlpEndpoint pydantic model representing a single OTLP endpoint (protocol, URL, telemetries); used to communicate the required information for a server offering an OTLP API endpoint
Support for filtering endpoints by protocol (http, grpc) and telemetry type (logs, metrics, traces)
gRPC is favoured over HTTP when multiple endpoints are available
Support for publishing LogQL and PromQL rules via OtlpRequirer.publish()
LZMA+base64 compression of rules in the requirer databag to avoid Juju databag size limits
OtlpProvider.rules() for fetching rules from all requirer relations with injected Juju topology and validation
Generic aggregator rules automatically included in every requirer’s published rule set
Python 3.10+ compatibility

Replace the requirer’s rule path interface with an interface accepting an object containing rules
Generic PromQL alert rules for requirer charms that are of the aggregator or application type

Added an insecure field to the OtlpEndpoint(s) in the databag to communicate TLS, required for some gRPC applications