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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package mlog
import (
"context"
"encoding/json"
"errors"
"fmt"
"os"
"github.com/mattermost/logr"
)
// defaultLog manually encodes the log to STDERR, providing a basic, default logging implementation
// before mlog is fully configured.
func defaultLog(level, msg string, fields ...Field) {
log := struct {
Level string `json:"level"`
Message string `json:"msg"`
Fields []Field `json:"fields,omitempty"`
}{
level,
msg,
fields,
}
if b, err := json.Marshal(log); err != nil {
fmt.Fprintf(os.Stderr, `{"level":"error","msg":"failed to encode log message"}%s`, "\n")
} else {
fmt.Fprintf(os.Stderr, "%s\n", b)
}
}
func defaultIsLevelEnabled(level LogLevel) bool {
return true
}
func defaultDebugLog(msg string, fields ...Field) {
defaultLog("debug", msg, fields...)
}
func defaultInfoLog(msg string, fields ...Field) {
defaultLog("info", msg, fields...)
}
func defaultWarnLog(msg string, fields ...Field) {
defaultLog("warn", msg, fields...)
}
func defaultErrorLog(msg string, fields ...Field) {
defaultLog("error", msg, fields...)
}
func defaultCriticalLog(msg string, fields ...Field) {
// We map critical to error in zap, so be consistent.
defaultLog("error", msg, fields...)
}
func defaultCustomLog(lvl LogLevel, msg string, fields ...Field) {
// custom log levels are only output once log targets are configured.
}
func defaultCustomMultiLog(lvl []LogLevel, msg string, fields ...Field) {
// custom log levels are only output once log targets are configured.
}
func defaultFlush(ctx context.Context) error {
return nil
}
func defaultAdvancedConfig(cfg LogTargetCfg) error {
// mlog.ConfigAdvancedConfig should not be called until default
// logger is replaced with mlog.Logger instance.
return errors.New("cannot config advanced logging on default logger")
}
func defaultAdvancedShutdown(ctx context.Context) error {
return nil
}
func defaultAddTarget(targets ...logr.Target) error {
// mlog.AddTarget should not be called until default
// logger is replaced with mlog.Logger instance.
return errors.New("cannot AddTarget on default logger")
}
func defaultRemoveTargets(ctx context.Context, f func(TargetInfo) bool) error {
// mlog.RemoveTargets should not be called until default
// logger is replaced with mlog.Logger instance.
return errors.New("cannot RemoveTargets on default logger")
}
func defaultEnableMetrics(collector logr.MetricsCollector) error {
// mlog.EnableMetrics should not be called until default
// logger is replaced with mlog.Logger instance.
return errors.New("cannot EnableMetrics on default logger")
}
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