Add script to automatically remove old not used models (#1981)

Adds step during the SDK's generate process that will strip out old unused model versions. This prevents the SDK from continually to persist old models.

Makefile

@@ -36,7 +36,7 @@ help:
 	@echo "  get-deps-tests          to get the SDK's test dependencies"
 	@echo "  get-deps-verify         to get the SDK's verification dependencies"
 
-generate: gen-test gen-endpoints gen-services
+generate: cleanup-models gen-test gen-endpoints gen-services
 
 gen-test: gen-protocol-test
 
@@ -49,6 +49,10 @@ gen-protocol-test:
 gen-endpoints:
 	go generate ./models/endpoints/
 
+cleanup-models:
+	@echo "Cleaning up stale model versions"
+	@./cleanup_models.sh
+
 build:
 	@echo "go build SDK and vendor packages"
 	@go build ${SDK_ONLY_PKGS}

cleanup_models.sh

@@ -0,0 +1,9 @@
+#/usr/bin/env bash
+
+# Deletes all but the most current model version.
+for v in $(ls ./models/apis | grep -v '.go' ); do
+	for vm in $(ls -r models/apis/$v/ | sed -n '1!p' ); do
+		echo "rm -r models/apis/$v/$vm"
+		rm -r models/apis/$v/$vm
+	done
+done