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logger.go
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/
logger.go
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package log
import (
"fmt"
"log"
"os"
"github.com/go-logr/stdr"
"github.com/uptrace/opentelemetry-go-extra/otelzap"
"go.opentelemetry.io/otel"
"go.uber.org/zap"
"github.com/synyx/tuwat/pkg/config"
)
func Initialize(cfg *config.Config) func() {
logger, err := cfg.Logger.Build(
zap.WithCaller(true),
zap.AddStacktrace(zap.ErrorLevel),
)
if err != nil {
fmt.Println("failed to set up logging system:", err)
os.Exit(1)
}
var reversionFunctions []func()
revert := func(reversionFunctions []func()) func() {
return func() {
for _, f := range reversionFunctions {
f()
}
}
}
reversionFunctions = append(reversionFunctions, zap.ReplaceGlobals(logger))
logrLogger := NewLogrZapBridge(logger)
otel.SetLogger(logrLogger)
reversionFunctions = append(reversionFunctions, func() { otel.SetLogger(stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile))) })
stdLogger := newStdLoggerBridge(logger)
reversionFunctions = append(reversionFunctions, stdLogger.ReplaceGlobals())
otelLogger := otelzap.New(
logger,
otelzap.WithMinLevel(zap.DebugLevel),
otelzap.WithCaller(true),
otelzap.WithStackTrace(false),
otelzap.WithTraceIDField(true),
)
reversionFunctions = append(reversionFunctions, otelzap.ReplaceGlobals(otelLogger))
otelLogger.Info("initialized logger", zap.String("environment", cfg.Environment))
return revert(reversionFunctions)
}