added poseidon with aws to k8s changes

pkg/logging/context_hook.go

@@ -0,0 +1,41 @@
+package logging
+
+import (
+	"github.com/openHPI/poseidon/pkg/dto"
+	"github.com/sirupsen/logrus"
+)
+
+// ContextHook logs the values referenced by the of dto.LoggedContextKeys.
+// By default Logrus does not log the values stored in the passed context.
+type ContextHook struct{}
+
+// Fire is triggered on new log entries.
+func (hook *ContextHook) Fire(entry *logrus.Entry) error {
+	if entry.Context != nil {
+		injectContextValuesIntoData(entry)
+	}
+	return nil
+}
+
+func injectContextValuesIntoData(entry *logrus.Entry) {
+	for _, key := range dto.LoggedContextKeys {
+		value := entry.Context.Value(key)
+		_, valueExisting := entry.Data[string(key)]
+		if !valueExisting && value != nil {
+			entry.Data[string(key)] = value
+		}
+	}
+}
+
+// Levels returns all levels this hook should be registered to.
+func (hook *ContextHook) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+		logrus.TraceLevel,
+	}
+}