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// Copyright 2020 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package logprinter
import (
"fmt"
"io"
"os"
"go.uber.org/zap"
)
// ContextKey is key used to store values in context
type ContextKey string
// ContextKeyLogger is the key used for logger stored in context
const ContextKeyLogger ContextKey = "logger"
// Logger is a set of functions writing output to custom writters, but still
// using the global zap logger as our default config does not writes everything
// to a memory buffer.
// TODO: use also separate zap loggers
type Logger struct {
outputFmt DisplayMode // output format of logger
stdout io.Writer
stderr io.Writer
}
// NewLogger creates a Logger with default settings
func NewLogger(m string) *Logger {
return &Logger{
stdout: os.Stdout,
stderr: os.Stderr,
outputFmt: fmtDisplayMode(m),
}
}
// SetStdout redirect stdout to a custom writer
func (l *Logger) SetStdout(w io.Writer) {
l.stdout = w
}
// SetStderr redirect stderr to a custom writer
func (l *Logger) SetStderr(w io.Writer) {
l.stderr = w
}
// SetDisplayMode changes the output format of logger
func (l *Logger) SetDisplayMode(m DisplayMode) {
l.outputFmt = m
}
// SetDisplayModeFromString changes the output format of logger
func (l *Logger) SetDisplayModeFromString(m string) {
l.outputFmt = fmtDisplayMode(m)
}
// GetDisplayMode returns the current output format
func (l *Logger) GetDisplayMode() DisplayMode {
return l.outputFmt
}
// Debugf output the debug message to console
func (l *Logger) Debugf(format string, args ...any) {
zap.L().Debug(fmt.Sprintf(format, args...))
}
// Infof output the log message to console
func (l *Logger) Infof(format string, args ...any) {
zap.L().Info(fmt.Sprintf(format, args...))
printLog(l.stdout, l.outputFmt, "info", format, args...)
}
// Warnf output the warning message to console
func (l *Logger) Warnf(format string, args ...any) {
zap.L().Warn(fmt.Sprintf(format, args...))
printLog(l.stderr, l.outputFmt, "warn", format, args...)
}
// Errorf output the error message to console
func (l *Logger) Errorf(format string, args ...any) {
zap.L().Error(fmt.Sprintf(format, args...))
printLog(l.stderr, l.outputFmt, "error", format, args...)
}
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