93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package log
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import (
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"bytes"
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"os"
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"log/syslog"
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"github.com/sirupsen/logrus"
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lSyslog "github.com/sirupsen/logrus/hooks/syslog"
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"github.com/spf13/viper"
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"github.com/superseriousbusiness/gotosocial/internal/config"
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)
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// Initialize initializes the global Logrus logger, reading the desired
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// log level from the viper store, or using a default if the level
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// has not been set in viper.
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//
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// It also sets the output to log.outputSplitter,
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// so you get error logs on stderr and normal logs on stdout.
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//
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// If syslog settings are also in viper, then Syslog will be initialized as well.
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func Initialize() error {
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logrus.SetOutput(&outputSplitter{})
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logrus.SetFormatter(&logrus.TextFormatter{
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DisableColors: true,
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DisableQuote: true,
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FullTimestamp: true,
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})
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keys := config.Keys
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// check if a desired log level has been set
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logLevel := viper.GetString(keys.LogLevel)
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if logLevel != "" {
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level, err := logrus.ParseLevel(logLevel)
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if err != nil {
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return err
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}
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logrus.SetLevel(level)
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if level == logrus.TraceLevel {
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logrus.SetReportCaller(true)
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}
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}
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// check if syslog has been enabled, and configure it if so
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if syslogEnabled := viper.GetBool(keys.SyslogEnabled); syslogEnabled {
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protocol := viper.GetString(keys.SyslogProtocol)
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address := viper.GetString(keys.SyslogAddress)
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hook, err := lSyslog.NewSyslogHook(protocol, address, syslog.LOG_INFO, "")
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if err != nil {
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return err
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}
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logrus.AddHook(&trimHook{hook})
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}
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return nil
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}
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// outputSplitter implements the io.Writer interface for use with Logrus, and simply
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// splits logs between stdout and stderr depending on their severity.
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// See: https://github.com/sirupsen/logrus/issues/403#issuecomment-346437512
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type outputSplitter struct{}
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func (splitter *outputSplitter) Write(p []byte) (n int, err error) {
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if bytes.Contains(p, []byte("level=error")) {
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return os.Stderr.Write(p)
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}
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return os.Stdout.Write(p)
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}
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