updating makefile with defaults command

Author: Fiona-Waters

Makefile

@@ -1,11 +1,43 @@
+# CODEFLARE_SDK_VERSION defines the default version of the CodeFlare SDK
+CODEFLARE_SDK_VERSION ?= 0.9.0
+
+# RAY_VERSION defines the default version of Ray (used for testing)
+RAY_VERSION ?= 2.5.0
+
+# RAY_IMAGE defines the default container image for Ray (used for testing)
+RAY_IMAGE ?= rayproject/ray:$(RAY_VERSION)
+
+##@ Development
+
+DEFAULTS_TEST_FILE := support/defaults.go
+
+.PHONY: defaults
+defaults:
+	$(info Regenerating $(DEFAULTS_TEST_FILE))
+	@echo "package support" > $(DEFAULTS_TEST_FILE)
+	@echo "" >> $(DEFAULTS_TEST_FILE)
+	@echo "// ***********************" >> $(DEFAULTS_TEST_FILE)
+	@echo "//  DO NOT EDIT THIS FILE"  >> $(DEFAULTS_TEST_FILE)
+	@echo "// ***********************" >> $(DEFAULTS_TEST_FILE)
+	@echo "" >> $(DEFAULTS_TEST_FILE)
+	@echo "const (" >> $(DEFAULTS_TEST_FILE)
+	@echo "  CodeFlareSDKVersion = \"$(CODEFLARE_SDK_VERSION)\"" >> $(DEFAULTS_TEST_FILE)
+	@echo "  RayVersion = \"$(RAY_VERSION)\"" >> $(DEFAULTS_TEST_FILE)
+	@echo "  RayImage = \"$(RAY_IMAGE)\"" >> $(DEFAULTS_TEST_FILE)
+	@echo "" >> $(DEFAULTS_TEST_FILE)
+	@echo ")" >> $(DEFAULTS_TEST_FILE)
+	@echo "" >> $(DEFAULTS_TEST_FILE)
+
+	gofmt -w $(DEFAULTS_TEST_FILE)
+
+
 ## Location to install dependencies to
 LOCALBIN ?= $(shell pwd)/bin
 $(LOCALBIN):
 	mkdir -p $(LOCALBIN)
 
 OPENSHIFT-GOIMPORTS ?= $(LOCALBIN)/openshift-goimports
 
-
 .PHONY: openshift-goimports
 openshift-goimports: $(OPENSHIFT-GOIMPORTS) ## Download openshift-goimports locally if necessary.
 $(OPENSHIFT-GOIMPORTS): $(LOCALBIN)