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

pkg/buildermgr/buildermgr.go

@@ -0,0 +1,54 @@
+/*
+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 buildermgr
+
+import (
+	"github.com/pkg/errors"
+	"go.uber.org/zap"
+
+	"github.com/fission/fission/pkg/crd"
+	fetcherConfig "github.com/fission/fission/pkg/fetcher/config"
+)
+
+// Start the buildermgr service.
+func Start(logger *zap.Logger, storageSvcUrl string, envBuilderNamespace string) error {
+	bmLogger := logger.Named("builder_manager")
+
+	fissionClient, kubernetesClient, _, err := crd.MakeFissionClient()
+	if err != nil {
+		return errors.Wrap(err, "failed to get fission or kubernetes client")
+	}
+
+	err = fissionClient.WaitForCRDs()
+	if err != nil {
+		return errors.Wrap(err, "error waiting for CRDs")
+	}
+
+	fetcherConfig, err := fetcherConfig.MakeFetcherConfig("/packages")
+	if err != nil {
+		return errors.Wrap(err, "error making fetcher config")
+	}
+
+	envWatcher := makeEnvironmentWatcher(bmLogger, fissionClient, kubernetesClient, fetcherConfig, envBuilderNamespace)
+	go envWatcher.watchEnvironments()
+
+	pkgWatcher := makePackageWatcher(bmLogger, fissionClient,
+		kubernetesClient, envBuilderNamespace, storageSvcUrl)
+	go pkgWatcher.watchPackages(fissionClient, kubernetesClient, envBuilderNamespace)
+
+	select {}
+}