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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| /* | ||
| 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 logging | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "log" | ||
| "time" | ||
|
|
||
| "github.com/blendle/zapdriver" | ||
| "github.com/go-logr/logr" | ||
| "github.com/go-logr/zapr" | ||
| "github.com/samber/lo" | ||
| "go.uber.org/zap" | ||
| "go.uber.org/zap/zapcore" | ||
| "go.uber.org/zap/zapio" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/client-go/informers" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/rest" | ||
| "k8s.io/klog/v2" | ||
| "knative.dev/pkg/changeset" | ||
| "knative.dev/pkg/logging" | ||
| "knative.dev/pkg/logging/logkey" | ||
| "knative.dev/pkg/system" | ||
|
|
||
| "github.com/aws/karpenter-core/pkg/operator/injection" | ||
| ) | ||
|
|
||
| const ( | ||
| loggerCfgConfigMapName = "config-logging" | ||
| loggerCfgConfigMapKey = "zap-logger-config" | ||
| ) | ||
|
|
||
| func DefaultZapConfig() zap.Config { | ||
| cfg := zapdriver.NewProductionConfig() | ||
| cfg.EncoderConfig.EncodeDuration = zapcore.StringDurationEncoder | ||
| return cfg | ||
| } | ||
|
|
||
| // NewLogger returns a configured *zap.SugaredLogger | ||
| func NewLogger(ctx context.Context, component string, kubernetesInterface kubernetes.Interface) *zap.SugaredLogger { | ||
| if logger := loggerFromConfigMap(ctx, component, kubernetesInterface); logger != nil { | ||
| if injection.GetOptions(ctx).LogLevel != nil { | ||
| log.Fatalf(`--log-level cannot be set while using the "config-logging" ConfigMap`) | ||
| } | ||
| return logger | ||
| } | ||
| return defaultLogger(ctx) | ||
| } | ||
|
|
||
| func withCommit(logger *zap.SugaredLogger) *zap.SugaredLogger { | ||
| revision := changeset.Get() | ||
| if revision == changeset.Unknown { | ||
| logger.Info("Unable to read vcs.revision from binary") | ||
| return logger | ||
| } | ||
| // Enrich logs with the components git revision. | ||
| return logger.With(zap.String(logkey.Commit, revision)) | ||
| } | ||
|
|
||
| func defaultLogger(ctx context.Context) *zap.SugaredLogger { | ||
| cfg := DefaultZapConfig() | ||
| if injection.GetOptions(ctx).LogLevel != nil { | ||
| cfg.Level = lo.FromPtr(injection.GetOptions(ctx).LogLevel) | ||
| } | ||
| return withCommit(lo.Must(cfg.Build()).Sugar()) | ||
| } | ||
|
|
||
| func loggerFromConfigMap(ctx context.Context, component string, kubernetesInterface kubernetes.Interface) *zap.SugaredLogger { | ||
| cancelCtx, cancel := context.WithTimeout(ctx, time.Second*5) | ||
| defer cancel() | ||
|
|
||
| factory := informers.NewSharedInformerFactoryWithOptions(kubernetesInterface, time.Second*30, informers.WithNamespace(system.Namespace())) | ||
| informer := factory.Core().V1().ConfigMaps().Informer() | ||
| factory.Start(cancelCtx.Done()) | ||
|
|
||
| cm, err := injection.WaitForConfigMap(ctx, loggerCfgConfigMapName, informer) | ||
| if err != nil { | ||
| if errors.IsNotFound(err) { | ||
| return nil | ||
| } | ||
| log.Fatalf("retrieving logging config map from %q", types.NamespacedName{Namespace: system.Namespace(), Name: loggerCfgConfigMapName}) | ||
| } | ||
| cfg := DefaultZapConfig() | ||
| lo.Must0(json.Unmarshal([]byte(cm.Data[loggerCfgConfigMapKey]), &cfg)) | ||
|
|
||
| if v := cm.Data[fmt.Sprintf("loglevel.%s", component)]; v != "" { | ||
| cfg.Level = lo.Must(zap.ParseAtomicLevel(v)) | ||
| } | ||
| if injection.GetOptions(ctx).LogLevel != nil { | ||
| cfg.Level = lo.FromPtr(injection.GetOptions(ctx).LogLevel) | ||
| } | ||
| return withCommit(lo.Must(cfg.Build()).Sugar()) | ||
| } | ||
|
|
||
| // ConfigureGlobalLoggers sets up any package-wide loggers like "log" or "klog" that are utilized by other packages | ||
| // to use the configured *zap.SugaredLogger from the context | ||
| func ConfigureGlobalLoggers(ctx context.Context) { | ||
| klog.SetLogger(zapr.NewLogger(logging.FromContext(ctx).Desugar())) | ||
| w := &zapio.Writer{Log: logging.FromContext(ctx).Desugar(), Level: zap.DebugLevel} | ||
| log.SetFlags(0) | ||
| log.SetOutput(w) | ||
| rest.SetDefaultWarningHandler(&logging.WarningHandler{Logger: logging.FromContext(ctx)}) | ||
| } | ||
|
|
||
| type ignoreDebugEventsSink struct { | ||
| name string | ||
| sink logr.LogSink | ||
| } | ||
|
|
||
| func (i ignoreDebugEventsSink) Init(ri logr.RuntimeInfo) { | ||
| i.sink.Init(ri) | ||
| } | ||
| func (i ignoreDebugEventsSink) Enabled(level int) bool { return i.sink.Enabled(level) } | ||
| func (i ignoreDebugEventsSink) Info(level int, msg string, keysAndValues ...interface{}) { | ||
| // ignore debug "events" logs | ||
| if level == 1 && i.name == "events" { | ||
| return | ||
| } | ||
| i.sink.Info(level, msg, keysAndValues...) | ||
| } | ||
| func (i ignoreDebugEventsSink) Error(err error, msg string, keysAndValues ...interface{}) { | ||
| i.sink.Error(err, msg, keysAndValues...) | ||
| } | ||
| func (i ignoreDebugEventsSink) WithValues(keysAndValues ...interface{}) logr.LogSink { | ||
| return i.sink.WithValues(keysAndValues...) | ||
| } | ||
| func (i ignoreDebugEventsSink) WithName(name string) logr.LogSink { | ||
| return &ignoreDebugEventsSink{name: name, sink: i.sink.WithName(name)} | ||
| } | ||
|
|
||
| // IgnoreDebugEvents wraps the logger with one that ignores any debug logs coming from a logger named "events". This | ||
| // prevents every event we write from creating a debug log which spams the log file during scale-ups due to recording | ||
| // pod scheduling decisions as events for visibility. | ||
| func IgnoreDebugEvents(logger logr.Logger) logr.Logger { | ||
| return logr.New(&ignoreDebugEventsSink{sink: logger.GetSink()}) | ||
| } |
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