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https://github.com/coreos/prometheus-operator.git
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5ce21508d6
PR #6890 removed the final bits from go-kit/log in the operator code base but forgot to redirect the klog logs to the new slog logger. `ResourceReconciler` has a dependency on klog because it uses `utilruntime.HandleError()` when it fails to sync a resource. As a consequence, the operator didn't log reconciliation failures anymore. Signed-off-by: Simon Pasquier <spasquie@redhat.com>
109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
// Copyright 2021 The prometheus-operator Authors
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//
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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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// nolint
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package log
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import (
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"flag"
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"fmt"
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"os"
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"strings"
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"github.com/go-kit/log"
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loglevel "github.com/go-kit/log/level"
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)
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const (
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LevelAll = "all"
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LevelDebug = "debug"
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LevelInfo = "info"
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LevelWarn = "warn"
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LevelError = "error"
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LevelNone = "none"
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)
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const (
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FormatLogFmt = "logfmt"
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FormatJSON = "json"
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)
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type Config struct {
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Level string
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Format string
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}
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func RegisterFlags(fs *flag.FlagSet, c *Config) {
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fs.StringVar(&c.Level, "log-level", "info", fmt.Sprintf("Log level to use. Possible values: %s", strings.Join(AvailableLogLevels, ", ")))
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fs.StringVar(&c.Format, "log-format", "logfmt", fmt.Sprintf("Log format to use. Possible values: %s", strings.Join(AvailableLogFormats, ", ")))
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}
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// NewLogger returns a log.Logger that prints in the provided format at the
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// provided level with a UTC timestamp and the caller of the log entry.
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func NewLogger(c Config) (log.Logger, error) {
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var (
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logger log.Logger
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lvlOption loglevel.Option
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)
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// For log levels other than debug, the klog verbosity level is 0.
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switch strings.ToLower(c.Level) {
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case LevelAll:
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lvlOption = loglevel.AllowAll()
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case LevelDebug:
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lvlOption = loglevel.AllowDebug()
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case LevelInfo:
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lvlOption = loglevel.AllowInfo()
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case LevelWarn:
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lvlOption = loglevel.AllowWarn()
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case LevelError:
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lvlOption = loglevel.AllowError()
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case LevelNone:
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lvlOption = loglevel.AllowNone()
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default:
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return nil, fmt.Errorf("log log_level %s unknown, %v are possible values", c.Level, AvailableLogLevels)
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}
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switch c.Format {
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case FormatLogFmt:
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logger = log.NewLogfmtLogger(log.NewSyncWriter(os.Stdout))
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case FormatJSON:
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logger = log.NewJSONLogger(log.NewSyncWriter(os.Stdout))
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default:
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return nil, fmt.Errorf("log format %s unknown, %v are possible values", c.Format, AvailableLogFormats)
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}
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logger = loglevel.NewFilter(logger, lvlOption)
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logger = log.With(logger, "ts", log.DefaultTimestampUTC)
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logger = log.With(logger, "caller", log.DefaultCaller)
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return logger, nil
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}
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// AvailableLogLevels is a list of supported logging levels
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var AvailableLogLevels = []string{
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LevelAll,
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LevelDebug,
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LevelInfo,
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LevelWarn,
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LevelError,
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LevelNone,
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}
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// AvailableLogFormats is a list of supported log formats
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var AvailableLogFormats = []string{
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FormatLogFmt,
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FormatJSON,
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}
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