69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package main
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import (
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"context"
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"fmt"
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"os/signal"
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"syscall"
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"github.com/spf13/viper"
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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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// newLogger constructs a zap.Logger instance for the current application.
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// Panics on failure.
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//
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// Logger is built from zap's production logging configuration with:
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// - parameterized level (debug by default)
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// - console encoding
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// - ISO8601 time encoding
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//
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// Logger records a stack trace for all messages at or above fatal level.
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//
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// See also zapcore.Level, zap.NewProductionConfig, zap.AddStacktrace.
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func newLogger(v *viper.Viper) *zap.Logger {
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var lvl zapcore.Level
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lvlStr := v.GetString(cfgLoggerLevel)
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err := lvl.UnmarshalText([]byte(lvlStr))
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if err != nil {
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panic(fmt.Sprintf("incorrect logger level configuration %s (%v), "+
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"value should be one of %v", lvlStr, err, [...]zapcore.Level{
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zapcore.DebugLevel,
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zapcore.InfoLevel,
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zapcore.WarnLevel,
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zapcore.ErrorLevel,
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zapcore.DPanicLevel,
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zapcore.PanicLevel,
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zapcore.FatalLevel,
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}))
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}
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c := zap.NewProductionConfig()
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c.Level = zap.NewAtomicLevelAt(lvl)
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c.Encoding = "console"
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c.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
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l, err := c.Build(
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zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel)),
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)
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if err != nil {
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panic(fmt.Sprintf("build zap logger instance: %v", err))
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}
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return l
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}
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func main() {
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var (
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v = newSettings()
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l = newLogger(v)
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g, _ = signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
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a = newApp(g, l, v)
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)
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go a.Server(g)
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a.Wait()
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}
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