The native journal handler only put the bare msg string in MESSAGE,
so default `journalctl` output lost all slog attributes (env, name,
ip_version, etc.) that were visible with the old TextHandler path.
Wrap the slog-journal handler so each record's MESSAGE is rendered
through slog.TextHandler — producing the same `level=INFO msg="..."
key=val` format as before — while still emitting every attribute as
a structured journal field for `journalctl -o verbose` / field-based
filtering.
Also fix go.mod: slog-journal is a direct dependency.
When stderr is connected to journald, switch from the plain text handler
to the native journal protocol via github.com/systemd/slog-journal. Each
record now carries PRIORITY, MESSAGE, and slog attributes as structured
fields, so journalctl -p and LogLevelMax= in unit files filter by
severity instead of dropping everything at once.
Detection follows systemd.exec(5): parse JOURNAL_STREAM as <dev>:<ino>
and fstat(2) stderr to confirm the match, guarding against processes
that inherit the env var but have stderr redirected elsewhere. The
fstat path is Linux-only; other platforms fall through to the existing
text handler.
Also honour DEBUG_INVOCATION by raising stderr to Debug level, matching
the behaviour of systemd.service(5) RestartMode=debug.
Factor the resource detector list into internal/otlpresource so
the logger's OTLP provider and the trace provider describe the
same process with the same attributes.
OTLP log records now carry the full resource (process.pid,
service.name, service.version, host.*, os.*, etc.) instead of
no resource attributes at all.
Add BearerTokenFunc to support dynamic bearer token authentication
for OTLP exporters. Tokens are injected per-request via gRPC
PerRPCCredentials and HTTP custom RoundTripper.
- Add BearerTokenFunc type and Config field in tracerconfig
- Implement bearerCredentials (gRPC) and bearerRoundTripper (HTTP)
- Wire bearer auth into all exporter creation functions
- Add getHTTPClient helper for DRY HTTP client configuration
- Upgrade OpenTelemetry SDK to v1.39.0 for WithHTTPClient support
Add independent log level control for stderr and OTLP loggers.
Both can be configured via environment variables or programmatically
at runtime.
- Add SetLevel() and SetOTLPLevel() for runtime control
- Add ParseLevel() to convert strings to slog.Level
- Support LOG_LEVEL and OTLP_LOG_LEVEL env vars
- Maintain backward compatibility with DEBUG env var
- Add comprehensive test coverage
Remove sync.Once reset that caused "unlock of unlocked mutex" panic.
Redesign initialization to use only checkReadiness goroutine for
retry attempts, eliminating race condition while preserving retry
functionality for TLS/tracing setup delays.
Add buffering exporter to queue OTLP logs until tracing is configured.
Support TLS configuration for OpenTelemetry log export with client
certificate authentication. Improve logfmt formatting and tracing setup.
- Add package-level documentation with usage examples and architecture details
- Document all public types, functions, and methods following godoc conventions
- Remove unused logger.Error type and NewError function
- Apply consistent documentation style across all packages
Packages updated:
- apitls: TLS certificate management with automatic renewal
- config: Environment-based configuration system
- config/depenv: Deployment environment handling
- ekko: Enhanced Echo web framework wrapper
- kafka: Kafka client wrapper with TLS support
- logger: Structured logging with OpenTelemetry integration
- tracing: OpenTelemetry distributed tracing setup
- types: Shared data structures for NTP Pool project
- xff/fastlyxff: Fastly CDN IP range management
All tests pass after documentation changes.
