Add Makefile targets to create stable releases, add version.go and print version

Makefile

@@ -1,3 +1,4 @@
+PROJECT=selinuxd
 BIN=$(BINDIR)/selinuxdctl
 BINDIR=bin
 POLICYDIR=/etc/selinux.d
@@ -6,6 +7,8 @@ SRC=$(shell find . -name "*.go")
 
 GO?=go
 
+GO_PROJECT := github.com/containers/$(PROJECT)
+
 # External Helper variables
 
 GOLANGCI_LINT_VERSION=1.33.0
@@ -17,7 +20,7 @@ GOLANGCI_LINT_URL=https://github.com/golangci/golangci-lint/releases/download/v$
 
 CONTAINER_RUNTIME?=podman
 
-IMAGE_NAME=selinuxd
+IMAGE_NAME=$(PROJECT)
 IMAGE_TAG=latest
 
 IMAGE_REF=$(IMAGE_NAME):$(IMAGE_TAG)
@@ -28,6 +31,14 @@ FEDORA_IMAGE_REPO?=quay.io/security-profiles-operator/$(IMAGE_NAME)-fedora:$(IMA
 
 TEST_OS?=fedora
 
+DATE_FMT = +'%Y-%m-%dT%H:%M:%SZ'
+BUILD_DATE ?= $(shell date -u "$(DATE_FMT)")
+VERSION := $(shell cat VERSION)
+
+LDVARS := \
+	-X $(GO_PROJECT)/pkg/version.buildDate=$(BUILD_DATE) \
+	-X $(GO_PROJECT)/pkg/version.version=$(VERSION)
+
 SEMODULE_BACKEND?=policycoreutils
 ifeq ($(SEMODULE_BACKEND), semanage)
 	BUILDTAGS:=semanage
@@ -45,11 +56,11 @@ all: build
 build: $(BIN)
 
 $(BIN): $(BINDIR) $(SRC) pkg/semodule/semanage/callbacks.c
-	$(GO) build -tags '$(BUILDTAGS)' -o $(BIN) .
+	$(GO) build -ldflags "$(LDVARS)" -tags '$(BUILDTAGS)' -o $(BIN) .
 
 .PHONY: test
 test:
-	$(GO) test -tags '$(BUILDTAGS)' -race github.com/containers/selinuxd/pkg/...
+	$(GO) test -tags '$(BUILDTAGS)' -race $(GO_PROJECT)/pkg/...
 
 .PHONY: e2e
 e2e:
@@ -97,9 +108,19 @@ $(GOPATH)/bin/golangci-lint:
 	GOLANGCI_LINT_CACHE=/tmp/golangci-cache $(GOPATH)/bin/golangci-lint version
 	GOLANGCI_LINT_CACHE=/tmp/golangci-cache $(GOPATH)/bin/golangci-lint linters
 
+.PHONY: set-release-tag
+set-release-tag:
+	$(eval IMAGE_TAG = $(VERSION))
+
 .PHONY: image
 image: default-image centos-image fedora-image
 
+.PHONY: release-image
+release-image: set-release-tag default-image centos-image fedora-image push push-fedora
+	# This will ensure that we also push to the latest tag
+	$(eval IMAGE_TAG = latest)
+	$(MAKE) push
+
 .PHONY: default-image
 default-image:
 	$(CONTAINER_RUNTIME) build -f images/Dockerfile.centos -t $(IMAGE_REPO) .
@@ -113,9 +134,13 @@ fedora-image:
 	$(CONTAINER_RUNTIME) build -f images/Dockerfile.fedora -t $(FEDORA_IMAGE_REPO) .
 
 .PHONY: push
-push:
+push: default-image
 	$(CONTAINER_RUNTIME) push $(IMAGE_REPO)
 
+.PHONY: push-fedora
+push-fedora: fedora-image
+	$(CONTAINER_RUNTIME) push $(FEDORA_IMAGE_REPO)
+
 image.tar:
 	$(MAKE) $(TEST_OS)-image && \
 	$(CONTAINER_RUNTIME) save -o image.tar quay.io/security-profiles-operator/$(IMAGE_NAME)-$(TEST_OS):$(IMAGE_TAG); \
@@ -126,3 +151,31 @@ vagrant-up: image.tar ## Boot the vagrant based test VM
 	# Retry in case provisioning failed because of some temporarily unavailable
 	# remote resource (like the VM image)
 	vagrant up || vagrant up || vagrant up
+
+.PHONY: check-release-version
+check-release-version:
+ifndef RELEASE_VERSION
+	$(error RELEASE_VERSION must be defined)
+endif
+
+.PHONY: commit-release-version
+commit-release-version: check-release-version
+	echo $(RELEASE_VERSION) > VERSION
+	git add VERSION
+	git commit -s -m "Release v$(RELEASE_VERSION)"
+	$(eval VERSION = $(RELEASE_VERSION))
+
+.PHONY: next-version
+next-version:
+	@grep '^[0-9]\+.[0-9]\+.[0-9]\+$$' VERSION
+	sed -i "s/\([0-9]\+\.[0-9]\+\.[0-9]\+\)/\1.99/" VERSION
+	git add VERSION
+	git commit -s -m "Prepare VERSION for the next release"
+
+.PHONY: tag-release
+tag-release:
+	git tag "v$(VERSION)"
+	git push origin "v$(VERSION)"
+
+.PHONY: release
+release: commit-release-version tag-release release-image next-version

VERSION

@@ -0,0 +1 @@
+0.2.99

cmd/daemon.go

@@ -26,6 +26,7 @@ import (
 	"github.com/containers/selinuxd/pkg/daemon"
 	"github.com/containers/selinuxd/pkg/datastore"
 	"github.com/containers/selinuxd/pkg/semodule"
+	"github.com/containers/selinuxd/pkg/version"
 )
 
 // daemonCmd represents the daemon command
@@ -100,6 +101,8 @@ func daemonCmdFunc(rootCmd *cobra.Command, _ []string) {
 		syscall.Exit(1)
 	}
 
+	version.PrintInfoPermissive(logger)
+
 	exitSignal := make(chan os.Signal, 1)
 	done := make(chan bool)
 	signal.Notify(exitSignal, syscall.SIGINT, syscall.SIGTERM)

cmd/oneshot.go

@@ -27,6 +27,7 @@ import (
 	"github.com/containers/selinuxd/pkg/datastore"
 	"github.com/containers/selinuxd/pkg/semodule"
 	seiface "github.com/containers/selinuxd/pkg/semodule/interface"
+	"github.com/containers/selinuxd/pkg/version"
 )
 
 // oneshotCmd represents the oneshot command
@@ -79,6 +80,8 @@ func oneshotCmdFunc(rootCmd *cobra.Command, _ []string) {
 		syscall.Exit(1)
 	}
 
+	version.PrintInfoPermissive(logger)
+
 	opts, err := parseOneShotFlags(rootCmd)
 	if err != nil {
 		logger.Error(err, "Parsing flags")

pkg/version/version.go

@@ -0,0 +1,50 @@
+package version
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/go-logr/logr"
+)
+
+var (
+	buildDate string // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
+	version   string // the current version of the daemon
+)
+
+type Info struct {
+	Version   string `json:"version,omitempty"`
+	BuildDate string `json:"buildDate,omitempty"`
+	Compiler  string `json:"compiler,omitempty"`
+	Platform  string `json:"platform,omitempty"`
+}
+
+// AsKeyValues returns a key value slice of the info.
+func (i *Info) AsKeyValues() []interface{} {
+	return []interface{}{
+		"version", i.Version,
+		"buildDate", i.BuildDate,
+		"compiler", i.Compiler,
+		"platform", i.Platform,
+	}
+}
+
+func getInfo() *Info {
+	return &Info{
+		Version:   version,
+		BuildDate: buildDate,
+		Compiler:  runtime.Compiler,
+		Platform:  fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
+	}
+}
+
+func printInfo(logger logr.Logger, info *Info) {
+	logger.Info(
+		"selinuxd information",
+		info.AsKeyValues()...,
+	)
+}
+
+func PrintInfoPermissive(logger logr.Logger) {
+	printInfo(logger, getInfo())
+}