feat(overlay): support overlay pod (pingcap#125)

Signed-off-by: liubo02 <liubo02@pingcap.com>

Makefile

@@ -3,21 +3,26 @@ OUTPUT_DIR = $(ROOT)/_output
 BIN_DIR = $(OUTPUT_DIR)/bin
 CORE_API_PATH = $(ROOT)/apis/core
 PD_API_PATH = $(ROOT)/pkg/timanager/apis/pd
+OVERLAY_PKG_DIR = $(ROOT)/pkg/overlay
+BOILERPLATE_FILE = $(ROOT)/hack/boilerplate/boilerplate.go.txt
 # TODO: use kubectl in _output
 KUBECTL = kubectl -n tidb-admin --context kind-tidb-operator
 
-
+ALL_CMD = operator checker
 .PHONY: build
-build:
-	$(ROOT)/hack/build.sh
+build: $(addprefix build/,$(ALL_CMD))
+build/%:
+	$(ROOT)/hack/build.sh $*
 
 .PHONY: image
-image:
-	$(ROOT)/hack/image.sh
+image: $(addprefix image/,$(ALL_CMD))
+image/%:
+	$(ROOT)/hack/image.sh $*
 
 .PHONY: push
-push:
-	$(ROOT)/hack/image.sh --push
+push: $(addprefix push/,$(ALL_CMD))
+push/%:
+	$(ROOT)/hack/image.sh $* --push
 
 .PHONY: deploy
 deploy: crd rbac
@@ -26,27 +31,34 @@ deploy: crd rbac
 	$(KUBECTL) apply --server-side=true -f $(ROOT)/manifests/deploy
 
 .PHONY: codegen
-codegen: bin/deepcopy-gen bin/register-gen
+codegen: bin/deepcopy-gen bin/register-gen bin/overlay-gen
 	$(REGISTER_GEN) \
 		--output-file=zz_generated.register.go \
-		--go-header-file=$(ROOT)/hack/boilerplate/boilerplate.go.txt \
+		--go-header-file=$(BOILERPLATE_FILE) \
 		$(CORE_API_PATH)/...
 
 	$(DEEPCOPY_GEN) \
 		--output-file=zz_generated.deepcopy.go \
-		--go-header-file=$(ROOT)/hack/boilerplate/boilerplate.go.txt \
+		--go-header-file=$(BOILERPLATE_FILE) \
 		$(CORE_API_PATH)/...
 
 	$(REGISTER_GEN) \
 		--output-file=zz_generated.register.go \
-		--go-header-file=$(ROOT)/hack/boilerplate/boilerplate.go.txt \
+		--go-header-file=$(BOILERPLATE_FILE) \
 		$(PD_API_PATH)/...
 
 	$(DEEPCOPY_GEN) \
 		--output-file=zz_generated.deepcopy.go \
-		--go-header-file=$(ROOT)/hack/boilerplate/boilerplate.go.txt \
+		--go-header-file=$(BOILERPLATE_FILE) \
 		$(PD_API_PATH)/...
 
+.PHONY: overlaygen
+overlaygen: bin/overlay-gen
+	$(OVERLAY_GEN) \
+		--output-dir=$(OVERLAY_PKG_DIR) \
+		--go-header-file=$(BOILERPLATE_FILE) \
+		k8s.io/api/core/v1
+
 
 .PHONY: crd
 crd: bin/controller-gen
@@ -61,12 +73,12 @@ tidy:
 	cd $(CORE_API_PATH) && go mod tidy
 	go mod tidy
 
-ALL_GENERATION= tidy codegen crd rbac
+ALL_GEN = tidy codegen crd rbac
 .PHONY: generate
-generate: $(ALL_GENERATION)
+generate: $(ALL_GEN)
 
 .PHONY: verify
-verify: $(addprefix verify/,$(ALL_GENERATION))
+verify: $(addprefix verify/,$(ALL_GEN))
 verify/%:
 	$(ROOT)/hack/verify.sh make $*
 
@@ -99,8 +111,6 @@ logs/operator:
 	$(KUBECTL) logs -f `$(KUBECTL) get pods | awk '/operator/{ print $$1 }'`
 
 
-
-
 CONTROLLER_GEN = $(BIN_DIR)/controller-gen
 bin/controller-gen:
 	$(ROOT)/hack/download.sh go_install $(CONTROLLER_GEN) sigs.k8s.io/controller-tools/cmd/controller-gen
@@ -113,6 +123,10 @@ REGISTER_GEN = $(BIN_DIR)/register-gen
 bin/register-gen:
 	$(ROOT)/hack/download.sh go_install $(REGISTER_GEN) k8s.io/code-generator/cmd/register-gen
 
+OVERLAY_GEN = $(BIN_DIR)/overlay-gen
+bin/overlay-gen:
+	$(ROOT)/hack/build.sh overlay-gen
+
 .PHONY: bin/golangci-lint
 GOLANGCI_LINT = $(BIN_DIR)/golangci-lint
 bin/golangci-lint:
@@ -123,3 +137,5 @@ bin/golangci-lint:
 KIND = $(BIN_DIR)/kind
 bin/kind:
 	$(ROOT)/hack/download.sh go_install $(KIND) sigs.k8s.io/kind v0.23.0 "version | awk '{print \$$2}'"
+
+