chore: upgrade golang to 1.16 (#103)

Makefile

@@ -1,4 +1,21 @@
+ifeq ($(OS),Windows_NT)
+	ifeq ($(PROCESSOR_ARCHITECTURE),AMD64)
+		ARCH=amd64
+		OS=windows
+	endif
+else
+	UNAME_S := $(shell uname -s)
+	ifeq ($(UNAME_S),Linux)
+		OS=linux
+		ARCH=amd64
+	endif
+	ifeq ($(UNAME_S),Darwin)
+		OS=darwin
+		ARCH=amd64
+	endif
+endif
 
+HELL=/bin/bash -o pipefail
 # Image URL to use all building/pushing image targets
 IMG ?= controller:latest
 # Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
@@ -6,22 +23,27 @@ CRD_OPTIONS ?= "crd:trivialVersions=true,crdVersions=v1"
 
 run-with-cleanup = $(1) && $(2) || (ret=$$?; $(2) && exit $$ret)
 
+.PHONY: all
 all: manager
 
 # Run tests
+.PHONY: test
 test: generate fmt vet manifests
 	go test ./api/... ./controllers/... ./hydra/... ./helpers/... -coverprofile cover.out
 
 # Start KIND pseudo-cluster
+.PHONY: kind-start
 kind-start:
 	GO111MODULE=on go get "sigs.k8s.io/kind@v0.11.1" && kind create cluster
 
 # Stop KIND pseudo-cluster
+.PHONY: kind-stop
 kind-stop:
 	GO111MODULE=on go get "sigs.k8s.io/kind@v0.11.1" && kind delete cluster
 
 # Deploy on KIND
 # Ensures the controller image is built, deploys the image to KIND cluster along with necessary configuration
+.PHONY: kind-deploy
 kind-deploy: manager manifests docker-build-notest kind-start
 	kubectl config set-context kind-kind
 	kind load docker-image controller:latest
@@ -29,62 +51,76 @@ kind-deploy: manager manifests docker-build-notest kind-start
 	kustomize build config/default | kubectl apply -f -
 
 # private
+.PHONY: kind-test
 kind-test: kind-deploy
 	kubectl config set-context kind-kind
 	go get github.com/onsi/ginkgo/ginkgo
 	ginkgo -v ./controllers/...
 
 # Run integration tests on local KIND cluster
+.PHONY: test-integration
 test-integration:
 	$(call run-with-cleanup, $(MAKE) kind-test, $(MAKE) kind-stop)
 
 # Build manager binary
+.PHONY: manager
 manager: generate fmt vet
 	CGO_ENABLED=0 GO111MODULE=on GOOS=linux GOARCH=amd64 go build -a -o manager main.go
 
 # Run against the configured Kubernetes cluster in ~/.kube/config
+.PHONY: run
 run: generate fmt vet
 	go run ./main.go --hydra-url ${HYDRA_URL}
 
 # Install CRDs into a cluster
+.PHONY: install
 install: manifests
 	kubectl apply -f config/crd/bases
 
 # Deploy controller in the configured Kubernetes cluster in ~/.kube/config
+.PHONY: deploy
 deploy: manifests
 	kubectl apply -f config/crd/bases
 	kustomize build config/default | kubectl apply -f -
 
 # Generate manifests e.g. CRD, RBAC etc.
+.PHONY: manifests
 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
+.PHONY: fmt
 fmt:
 	go fmt ./...
 
 # Run go vet against code
+.PHONY: vet
 vet:
 	go vet ./...
 
 # Generate code
+.PHONY: generate
 generate: controller-gen
 	$(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths=./api/...
 
 # Build the docker image
-docker-build-notest: manager
+.PHONY: docker-build-notest
+docker-build-notest:
 	docker build . -t ${IMG}
 	@echo "updating kustomize image patch file for manager resource"
 	sed -i'' -e 's@image: .*@image: '"${IMG}"'@' ./config/default/manager_image_patch.yaml
 
+.PHONY: docker-build
 docker-build: test docker-build-notest
 
 # Push the docker image
+.PHONY: docker-push
 docker-push:
 	docker push ${IMG}
 
 # find or download controller-gen
 # download controller-gen if necessary
+.PHONY: controller-gen
 controller-gen:
 ifeq (, $(shell which controller-gen))
 	go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.5.0
@@ -92,3 +128,10 @@ CONTROLLER_GEN=$(shell which controller-gen)
 else
 CONTROLLER_GEN=$(shell which controller-gen)
 endif
+
+# Download and setup kubebuilder
+.PHONY: kubebuilder
+kubebuilder:
+	curl -sL https://github.com/kubernetes-sigs/kubebuilder/releases/download/v2.3.2/kubebuilder_2.3.2_${OS}_${ARCH}.tar.gz | tar -xz -C /tmp/
+	mv /tmp/kubebuilder_2.3.2_${OS}_${ARCH} ${PWD}/.bin/kubebuilder
+	export PATH=${PATH}:${PWD}/.bin/kubebuilder/bin