woodpecker/cmd/common/logger.go

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// Copyright 2023 Woodpecker Authors
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package common
import (
"io"
"os"
"github.com/6543/logfile-open"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"github.com/urfave/cli/v2"
)
var GlobalLoggerFlags = []cli.Flag{
&cli.StringFlag{
EnvVars: []string{"WOODPECKER_LOG_LEVEL"},
Name: "log-level",
Usage: "set logging level",
Value: "info",
},
&cli.StringFlag{
EnvVars: []string{"WOODPECKER_LOG_FILE"},
Name: "log-file",
Usage: "where logs are written to. 'stdout' and 'stderr' can be used as special keywords",
Value: "stderr",
},
&cli.BoolFlag{
EnvVars: []string{"WOODPECKER_DEBUG_PRETTY"},
Name: "pretty",
Usage: "enable pretty-printed debug output",
Value: IsInteractive(), // make pretty on interactive terminal by default
},
&cli.BoolFlag{
EnvVars: []string{"WOODPECKER_DEBUG_NOCOLOR"},
Name: "nocolor",
Usage: "disable colored debug output, only has effect if pretty output is set too",
Value: !IsInteractive(), // do color on interactive terminal by default
},
}
func SetupGlobalLogger(c *cli.Context, printLvl bool) {
logLevel := c.String("log-level")
pretty := c.Bool("pretty")
noColor := c.Bool("nocolor")
logFile := c.String("log-file")
var file io.ReadWriteCloser
switch logFile {
case "", "stderr": // default case
file = os.Stderr
case "stdout":
file = os.Stdout
default: // a file was set
openFile, err := logfile.OpenFileWithContext(c.Context, logFile, 0o660)
if err != nil {
log.Fatal().Err(err).Msgf("could not open log file '%s'", logFile)
}
file = openFile
noColor = true
}
log.Logger = zerolog.New(file).With().Timestamp().Logger()
if pretty {
log.Logger = log.Output(
zerolog.ConsoleWriter{
Out: file,
NoColor: noColor,
},
)
}
// TODO: format output & options to switch to json aka. option to add channels to send logs to
lvl, err := zerolog.ParseLevel(logLevel)
if err != nil {
log.Fatal().Msgf("unknown logging level: %s", logLevel)
}
zerolog.SetGlobalLevel(lvl)
// if debug or trace also log the caller
if zerolog.GlobalLevel() <= zerolog.DebugLevel {
log.Logger = log.With().Caller().Logger()
}
if printLvl {
log.Info().Msgf("LogLevel = %s", zerolog.GlobalLevel().String())
}
}