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91 lines
2.5 KiB
91 lines
2.5 KiB
// Copyright (c) 2021 Proton Technologies AG |
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// |
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// This file is part of ProtonMail Bridge. |
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// |
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// ProtonMail Bridge is free software: you can redistribute it and/or modify |
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// it under the terms of the GNU 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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// |
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// ProtonMail Bridge 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 General Public License for more details. |
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// |
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// You should have received a copy of the GNU General Public License |
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>. |
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package logging |
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import ( |
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"fmt" |
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"io" |
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"os" |
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"path/filepath" |
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"regexp" |
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"time" |
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"github.com/ProtonMail/proton-bridge/internal/constants" |
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"github.com/sirupsen/logrus" |
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"github.com/sirupsen/logrus/hooks/writer" |
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) |
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const ( |
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// MaxLogSize defines the maximum log size we should permit. |
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// Zendesk has a file size limit of 20MB. When the last N log files are zipped, |
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// it should fit under 20MB. So here we permit up to 10MB (most files are a few hundred kB). |
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MaxLogSize = 10 * 2 << 20 |
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// MaxLogs defines how many old log files should be kept. |
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MaxLogs = 3 |
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) |
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func Init(logsPath string) error { |
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logrus.SetFormatter(&logrus.TextFormatter{ |
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FullTimestamp: true, |
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TimestampFormat: time.StampMilli, |
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}) |
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logrus.AddHook(&writer.Hook{ |
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Writer: os.Stderr, |
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LogLevels: []logrus.Level{ |
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logrus.PanicLevel, |
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logrus.FatalLevel, |
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logrus.ErrorLevel, |
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}, |
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}) |
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rotator, err := NewRotator(MaxLogSize, func() (io.WriteCloser, error) { |
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if err := clearLogs(logsPath, MaxLogs); err != nil { |
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return nil, err |
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} |
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return os.Create(filepath.Join(logsPath, getLogName(constants.Version, constants.Revision))) |
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}) |
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if err != nil { |
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return err |
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} |
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logrus.SetOutput(rotator) |
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return nil |
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} |
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func SetLevel(level string) { |
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if lvl, err := logrus.ParseLevel(level); err == nil { |
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logrus.SetLevel(lvl) |
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} |
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if logrus.GetLevel() == logrus.DebugLevel || logrus.GetLevel() == logrus.TraceLevel { |
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// The hook to print panic, fatal and error to stderr is always |
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// added. We want to avoid log duplicates by replacing all hooks |
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_ = logrus.StandardLogger().ReplaceHooks(logrus.LevelHooks{}) |
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logrus.SetOutput(os.Stderr) |
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} |
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} |
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func getLogName(version, revision string) string { |
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return fmt.Sprintf("v%v_%v_%v.log", version, revision, time.Now().Unix()) |
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} |
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func matchLogName(name string) bool { |
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return regexp.MustCompile(`^v.*\.log$`).MatchString(name) |
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}
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