Move packages to proejct/pkg to follow go project folder structure convention (#1190)

pkg/controller/controller.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2016 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 controller
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+
+	"github.com/fission/fission/pkg/crd"
+	"github.com/fission/fission/pkg/utils"
+)
+
+func Start(logger *zap.Logger, port int, unitTestFlag bool) {
+	cLogger := logger.Named("controller")
+	// setup a signal handler for SIGTERM
+	utils.SetupStackTraceHandler()
+
+	fc, kc, apiExtClient, err := crd.MakeFissionClient()
+	if err != nil {
+		cLogger.Fatal("failed to connect to k8s API", zap.Error(err))
+	}
+
+	err = crd.EnsureFissionCRDs(cLogger, apiExtClient)
+	if err != nil {
+		cLogger.Fatal("failed to create fission CRDs", zap.Error(err))
+	}
+
+	err = fc.WaitForCRDs()
+	if err != nil {
+		cLogger.Fatal("error waiting for CRDs", zap.Error(err))
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	featureStatus, err := ConfigureFeatures(ctx, cLogger, unitTestFlag, fc, kc)
+	if err != nil {
+		cLogger.Info("error configuring features - proceeding without optional features", zap.Error(err))
+	}
+	defer cancel()
+
+	api, err := MakeAPI(cLogger, featureStatus)
+	if err != nil {
+		cLogger.Fatal("failed to start controller", zap.Error(err))
+	}
+	api.Serve(port)
+}