Cleanup Makefile. Add version flag.

Makefile

@@ -1,113 +1,29 @@
+TARGET = ./cc-metric-store
+VERSION = 1.3.0
+GIT_HASH := $(shell git rev-parse --short HEAD || echo 'development')
+CURRENT_TIME = $(shell date +"%Y-%m-%d:T%H:%M:%S")
+LD_FLAGS = '-s -X main.date=${CURRENT_TIME} -X main.version=${VERSION} -X main.commit=${GIT_HASH}'
 
-APP = cc-metric-store
+.PHONY: clean test tags $(TARGET)
-GOSRC_APP        := cc-metric-store.go
-GOSRC_FILES      := api.go \
-		    memstore.go \
-		    archive.go \
-		    debug.go \
-		    float.go \
-		    lineprotocol.go \
-		    selector.go \
-		    stats.go
 
+.NOTPARALLEL:
 
+$(TARGET):
+	$(info ===>  BUILD cc-backend)
+	@go build -ldflags=${LD_FLAGS} ./cmd/cc-metric-store
 
-BINDIR ?= bin
-
-
-.PHONY: all
-all: $(APP)
-
-$(APP): $(GOSRC)
-	go get
-	go build -o $(APP) $(GOSRC_APP) $(GOSRC_FILES)
-
-install: $(APP)
-	@WORKSPACE=$(PREFIX)
-	@if [ -z "$${WORKSPACE}" ]; then exit 1; fi
-	@mkdir --parents --verbose $${WORKSPACE}/usr/$(BINDIR)
-	@install -Dpm 755 $(APP) $${WORKSPACE}/usr/$(BINDIR)/$(APP)
-	@install -Dpm 600 config.json $${WORKSPACE}/etc/$(APP)/$(APP).json
-
-.PHONY: clean
-.ONESHELL:
 clean:
-	rm -f $(APP)
+	$(info ===>  CLEAN)
+	@go clean
+	@rm -f $(TARGET)
 
-.PHONY: fmt
+test:
-fmt:
+	$(info ===>  TESTING)
-	go fmt $(GOSRC_APP)
+	@go clean -testcache
+	@go build ./...
+	@go vet ./...
+	@go test ./...
 
-# Examine Go source code and reports suspicious constructs
+tags:
-.PHONY: vet
+	$(info ===>  TAGS)
-vet:
+	@ctags -R
-	go vet ./...
-
-# Run linter for the Go programming language.
-# Using static analysis, it finds bugs and performance issues, offers simplifications, and enforces style rules
-.PHONY: staticcheck
-staticcheck:
-	go install honnef.co/go/tools/cmd/staticcheck@latest
-	$$(go env GOPATH)/bin/staticcheck ./...
-
-.ONESHELL:
-.PHONY: RPM
-RPM: scripts/cc-metric-store.spec
-	@WORKSPACE="$${PWD}"
-	@SPECFILE="$${WORKSPACE}/scripts/cc-metric-store.spec"
-	# Setup RPM build tree
-	@eval $$(rpm --eval "ARCH='%{_arch}' RPMDIR='%{_rpmdir}' SOURCEDIR='%{_sourcedir}' SPECDIR='%{_specdir}' SRPMDIR='%{_srcrpmdir}' BUILDDIR='%{_builddir}'")
-	@mkdir --parents --verbose "$${RPMDIR}" "$${SOURCEDIR}" "$${SPECDIR}" "$${SRPMDIR}" "$${BUILDDIR}"
-	# Create source tarball
-	@COMMITISH="HEAD"
-	@VERS=$$(git describe --tags $${COMMITISH})
-	@VERS=$${VERS#v}
-	@VERS=$$(echo $$VERS | sed -e s+'-'+'_'+g)
-	@if [ "$${VERS}" = "" ]; then VERS="0.0.1"; fi
-	@eval $$(rpmspec --query --queryformat "NAME='%{name}' VERSION='%{version}' RELEASE='%{release}' NVR='%{NVR}' NVRA='%{NVRA}'" --define="VERS $${VERS}" "$${SPECFILE}")
-	@PREFIX="$${NAME}-$${VERSION}"
-	@FORMAT="tar.gz"
-	@SRCFILE="$${SOURCEDIR}/$${PREFIX}.$${FORMAT}"
-	@git archive --verbose --format "$${FORMAT}" --prefix="$${PREFIX}/" --output="$${SRCFILE}" $${COMMITISH}
-	# Build RPM and SRPM
-	@rpmbuild -ba --define="VERS $${VERS}" --rmsource --clean "$${SPECFILE}"
-	# Report RPMs and SRPMs when in GitHub Workflow
-	@if [[ "$${GITHUB_ACTIONS}" == true ]]; then
-	@     RPMFILE="$${RPMDIR}/$${ARCH}/$${NVRA}.rpm"
-	@     SRPMFILE="$${SRPMDIR}/$${NVR}.src.rpm"
-	@     echo "RPM: $${RPMFILE}"
-	@     echo "SRPM: $${SRPMFILE}"
-	@     echo "::set-output name=SRPM::$${SRPMFILE}"
-	@     echo "::set-output name=RPM::$${RPMFILE}"
-	@fi
-
-.ONESHELL:
-.PHONY: DEB
-DEB: scripts/cc-metric-store.deb.control $(APP)
-	@BASEDIR=$${PWD}
-	@WORKSPACE=$${PWD}/.dpkgbuild
-	@DEBIANDIR=$${WORKSPACE}/debian
-	@DEBIANBINDIR=$${WORKSPACE}/DEBIAN
-	@mkdir --parents --verbose $$WORKSPACE $$DEBIANBINDIR
-	#@mkdir --parents --verbose $$DEBIANDIR
-	@CONTROLFILE="$${BASEDIR}/scripts/cc-metric-store.deb.control"
-	@COMMITISH="HEAD"
-	@VERS=$$(git describe --tags --abbrev=0 $${COMMITISH})
-	@VERS=$${VERS#v}
-	@VERS=$$(echo $$VERS | sed -e s+'-'+'_'+g)
-	@if [ "$${VERS}" = "" ]; then VERS="0.0.1"; fi
-	@ARCH=$$(uname -m)
-	@ARCH=$$(echo $$ARCH | sed -e s+'_'+'-'+g)
-	@if [ "$${ARCH}" = "x86-64" ]; then ARCH=amd64; fi
-	@PREFIX="$${NAME}-$${VERSION}_$${ARCH}"
-	@SIZE_BYTES=$$(du -bcs --exclude=.dpkgbuild "$$WORKSPACE"/ | awk '{print $$1}' | head -1 | sed -e 's/^0\+//')
-	@SIZE="$$(awk -v size="$$SIZE_BYTES" 'BEGIN {print (size/1024)+1}' | awk '{print int($$0)}')"
-	#@sed -e s+"{VERSION}"+"$$VERS"+g -e s+"{INSTALLED_SIZE}"+"$$SIZE"+g -e s+"{ARCH}"+"$$ARCH"+g $$CONTROLFILE > $${DEBIANDIR}/control
-	@sed -e s+"{VERSION}"+"$$VERS"+g -e s+"{INSTALLED_SIZE}"+"$$SIZE"+g -e s+"{ARCH}"+"$$ARCH"+g $$CONTROLFILE > $${DEBIANBINDIR}/control
-	@make PREFIX=$${WORKSPACE} install
-	@DEB_FILE="cc-metric-store_$${VERS}_$${ARCH}.deb"
-	@dpkg-deb -b $${WORKSPACE} "$$DEB_FILE"
-	@rm -r "$${WORKSPACE}"
-	@if [ "$${GITHUB_ACTIONS}" = "true" ]; then
-	@     echo "::set-output name=DEB::$${DEB_FILE}"
-	@fi

cmd/cc-metric-store/main.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"context"
 	"flag"
+	"fmt"
 	"log"
 	"os"
 	"os/signal"
@@ -19,13 +20,27 @@ import (
 	"github.com/google/gops/agent"
 )
 
+var (
+	date    string
+	commit  string
+	version string
+)
+
 func main() {
 	var configFile string
-	var enableGopsAgent bool
+	var enableGopsAgent, flagVersion bool
 	flag.StringVar(&configFile, "config", "./config.json", "configuration file")
 	flag.BoolVar(&enableGopsAgent, "gops", false, "Listen via github.com/google/gops/agent")
+	flag.BoolVar(&flagVersion, "version", false, "Show version information and exit")
 	flag.Parse()
 
+	if flagVersion {
+		fmt.Printf("Version:\t%s\n", version)
+		fmt.Printf("Git hash:\t%s\n", commit)
+		fmt.Printf("Build time:\t%s\n", date)
+		os.Exit(0)
+	}
+
 	startupTime := time.Now()
 	config.Init(configFile)
 	memorystore.Init(config.Keys.Metrics)