PVCViewers Controller: {Make,Docker}files

Signed-off-by: Kimonas Sotirchos <kimwnasptd@arrikto.com>
Reviewed-by: Yannis Zarkadas <yanniszark@arrikto.com>
Github-PR: kubeflow#34

components/pvcviewer-controller/Dockerfile

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+# Build the manager binary
+FROM golang:1.12.5 as builder
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY api/ api/
+COPY util/ util/
+COPY controllers/ controllers/
+
+# Build
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER nonroot:nonroot
+
+ENTRYPOINT ["/manager"]

components/pvcviewer-controller/Makefile

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+
+# Image URL to use all building/pushing image targets
+IMG ?= gcr.io/arrikto-playground/pvcviewer-controller
+TAG ?= $(shell git describe --tags)
+# Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
+CRD_OPTIONS ?= "crd:trivialVersions=true"
+
+# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
+ifeq (,$(shell go env GOBIN))
+GOBIN=$(shell go env GOPATH)/bin
+else
+GOBIN=$(shell go env GOBIN)
+endif
+
+all: manager
+
+# Run tests
+test: generate fmt vet manifests
+	go test ./... -coverprofile cover.out
+
+# Build manager binary
+manager: generate fmt vet
+	go build -o bin/manager main.go
+
+#
+#
+# Run against the configured Kubernetes cluster in ~/.kube/config
+run: generate fmt vet manifests
+	ENABLE_CULLING=false \
+	go run ./main.go
+
+# Run the controller with culling enabled
+# Will need to port-forward the prometheus service to 9090
+# run `make proxy-prometheus` first
+run-culling: generate fmt vet manifests
+	ENABLE_CULLING=true \
+	PROMETHEUS_SVC=localhost:9090 \
+	CLUSTER_DOMAIN=cluster.local \
+	IDLE_TIME=2 \
+	CULLING_CHECK_PERIOD=1 \
+	go run ./main.go
+
+proxy-prometheus:
+	kubectl port-forward -n istio-system svc/prometheus 9090:9090
+
+# Install CRDs into a cluster
+install-crd: manifests
+	kustomize build config/crd | kubectl apply -f -
+
+uninstall-crd: manifests
+	kustomize build config/crd | kubectl delete -f -
+
+# Deploy basic CRs for testing
+install-crs:
+	kubectl apply -f config/samples
+
+uninstall-crs:
+	kubectl delete -f config/samples
+
+#
+# Deploy controller in the configured Kubernetes cluster in ~/.kube/config
+deploy: docker-build docker-push manifests
+	cd config/manager && kustomize edit set image controller=$(IMG):$(TAG)
+	kustomize build config/default | kubectl apply -f -
+
+destroy: manifests
+	cd config/manager && kustomize edit set image controller=$(IMG):$(TAG)
+	kustomize build config/default | kubectl delete -f -
+
+delete-namespace:
+	kubectl delete namespace pvc-viewer-controller-system
+
+# Generate manifests e.g. CRD, RBAC etc.
+manifests: controller-gen
+	$(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+
+# Run go fmt against code
+fmt:
+	go fmt ./...
+
+# Run go vet against code
+vet:
+	go vet ./...
+
+# Generate code
+generate: controller-gen
+	$(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths="./..."
+
+# Build the docker image (should add some tests)
+docker-build:
+	docker build . -t $(IMG):$(TAG)
+
+# Push the docker image
+docker-push:
+	docker push $(IMG):$(TAG)
+
+# find or download controller-gen
+# download controller-gen if necessary
+controller-gen:
+ifeq (, $(shell which controller-gen))
+	go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.1
+CONTROLLER_GEN=$(GOBIN)/controller-gen
+else
+CONTROLLER_GEN=$(shell which controller-gen)
+endif