/
printf.go
53 lines (41 loc) · 1.39 KB
/
printf.go
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package testlogging
import (
"bytes"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"github.com/kopia/kopia/internal/zaplogutil"
"github.com/kopia/kopia/repo/logging"
)
// Printf returns a logger that uses given printf-style function to print log output.
func Printf(printf func(msg string, args ...interface{}), prefix string) *zap.SugaredLogger {
return PrintfLevel(printf, prefix, zapcore.DebugLevel)
}
// PrintfLevel returns a logger that uses given printf-style function to print log output for logs of a given level or above.
func PrintfLevel(printf func(msg string, args ...interface{}), prefix string, level zapcore.Level) *zap.SugaredLogger {
writer := printfWriter{printf, prefix}
return zap.New(
zapcore.NewCore(
zaplogutil.NewStdConsoleEncoder(zaplogutil.StdConsoleEncoderConfig{}),
writer,
level,
),
).Sugar()
}
// PrintfFactory returns LoggerForModuleFunc that uses given printf-style function to print log output.
func PrintfFactory(printf func(msg string, args ...interface{})) logging.LoggerFactory {
return func(module string) *zap.SugaredLogger {
return Printf(printf, "["+module+"] ")
}
}
type printfWriter struct {
printf func(msg string, args ...interface{})
prefix string
}
func (w printfWriter) Write(p []byte) (int, error) {
n := len(p)
w.printf("%s%s", w.prefix, bytes.TrimRight(p, "\n"))
return n, nil
}
func (w printfWriter) Sync() error {
return nil
}