Add imports lint and vet to Makefile

Author: cryptobioz

Makefile

@@ -1,7 +1,7 @@
 DEPS = $(wildcard */*.go)
 VERSION = $(shell git describe --always --dirty)
 
-all: prometheus-puppetdb prometheus-puppetdb.1
+all: imports lint vet prometheus-puppetdb prometheus-puppetdb.1
 
 prometheus-puppetdb: main.go $(DEPS)
 	CGO_ENABLED=0 GOOS=linux \
@@ -16,4 +16,19 @@ prometheus-puppetdb.1: prometheus-puppetdb
 clean:
 	rm -f prometheus-puppetdb prometheus-puppetdb.1
 
-.PHONY: all clean
+lint:
+	@ go get -v github.com/golang/lint/golint
+	@for file in $$(git ls-files '*.go' | grep -v '_workspace/'); do \
+		export output="$$(golint $${file} | grep -v 'type name will be used as docker.DockerInfo')"; \
+		[ -n "$${output}" ] && echo "$${output}" && export status=1; \
+	done; \
+	exit $${status:-0}
+
+vet: main.go
+	go vet $<
+
+imports: main.go
+	dep ensure -vendor-only
+	goimports -d $<
+
+.PHONY: all lint clean