Add kubernetes objects aware logger with zap (#2179)

Using controller-runtime zap integration which is aware of Kubernetesobjects and logs only name+namespace of the object when complete runtime.Object compatible type is given to logger.

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/utils/loggerfactory/loggerfactory.go

@@ -0,0 +1,38 @@
+/*
+Copyright 2021 The Fission Authors.
+
+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 loggerfactory
+
+import (
+	"os"
+	"strconv"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	kzap "sigs.k8s.io/controller-runtime/pkg/log/zap"
+)
+
+func GetLogger() *zap.Logger {
+	encConfOpt := func(o *kzap.Options) {
+		encTimeFunc := func(encConfig *zapcore.EncoderConfig) {
+			encConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+		}
+		o.EncoderConfigOptions = append(o.EncoderConfigOptions, encTimeFunc)
+		o.ZapOpts = append(o.ZapOpts, zap.AddCaller())
+	}
+	isDebugEnv, _ := strconv.ParseBool(os.Getenv("DEBUG_ENV"))
+	return kzap.NewRaw(kzap.UseDevMode(isDebugEnv), encConfOpt)
+}