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79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
package logging
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// Copy-pasted from prometheus/common/promlog.
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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import (
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"flag"
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"github.com/go-kit/kit/log/level"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// Level is a settable identifier for the minimum level a log entry
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// must be have.
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type Level struct {
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s string
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Logrus logrus.Level
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Gokit level.Option
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}
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// RegisterFlags adds the log level flag to the provided flagset.
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func (l *Level) RegisterFlags(f *flag.FlagSet) {
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l.Set("info")
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f.Var(l, "log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error]")
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}
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func (l *Level) String() string {
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return l.s
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}
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// UnmarshalYAML implements yaml.Unmarshaler.
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func (l *Level) UnmarshalYAML(unmarshal func(interface{}) error) error {
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var level string
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if err := unmarshal(&level); err != nil {
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return err
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}
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return l.Set(level)
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}
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// MarshalYAML implements yaml.Marshaler.
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func (l Level) MarshalYAML() (interface{}, error) {
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return l.String(), nil
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}
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// Set updates the value of the allowed level. Implments flag.Value.
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func (l *Level) Set(s string) error {
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switch s {
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case "debug":
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l.Logrus = logrus.DebugLevel
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l.Gokit = level.AllowDebug()
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case "info":
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l.Logrus = logrus.InfoLevel
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l.Gokit = level.AllowInfo()
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case "warn":
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l.Logrus = logrus.WarnLevel
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l.Gokit = level.AllowWarn()
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case "error":
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l.Logrus = logrus.ErrorLevel
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l.Gokit = level.AllowError()
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default:
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return errors.Errorf("unrecognized log level %q", s)
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}
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l.s = s
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return nil
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}
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