43 lines
981 B
Go
43 lines
981 B
Go
package logger
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import (
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"log"
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"os"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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// Log level is retrieved from environment variable LOG_LEVEL, defaulting to "info" otherwise.
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// To activate this facility, add a blank import to this package.
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func init() {
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level := os.Getenv("LOG_LEVEL")
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if level == "" {
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level = "info"
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}
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initializeZapGlobals(level)
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}
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func initializeZapGlobals(level string) {
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var zapLevel zapcore.Level
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if err := zapLevel.UnmarshalText([]byte(level)); err != nil {
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log.Fatalf("failed to parse logger level: %v", err)
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}
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log.Printf("setting logging level to '%s'.\n", zapLevel.String())
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cfg := zap.NewProductionConfig()
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cfg.Level = zap.NewAtomicLevelAt(zapLevel)
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cfg.OutputPaths = []string{"stdout"}
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cfg.ErrorOutputPaths = []string{"stderr"}
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cfg.EncoderConfig.EncodeTime = zapcore.RFC3339NanoTimeEncoder
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logger, err := cfg.Build()
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if err != nil {
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log.Fatalf("failed to initialize logger: %v", err)
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}
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zap.ReplaceGlobals(logger)
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}
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