From 9217973e8f8e79fe52977ff385aa0a1fa582b8a0 Mon Sep 17 00:00:00 2001
From: Eric Lippmann <eric.lippmann@icinga.com>
Date: Mon, 11 Mar 2024 09:45:54 +0100
Subject: [PATCH] Set version to `0.1.0`

---
 .gitattributes                |  2 ++
 cmd/icinga-kubernetes/main.go |  8 ++++++++
 internal/version.go           | 10 ++++++++++
 3 files changed, 20 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 internal/version.go

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..3897cc12
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Include version information on `git archive'
+/internal/version.go export-subst
diff --git a/cmd/icinga-kubernetes/main.go b/cmd/icinga-kubernetes/main.go
index 258bba00..09b639cd 100644
--- a/cmd/icinga-kubernetes/main.go
+++ b/cmd/icinga-kubernetes/main.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"flag"
 	_ "github.com/go-sql-driver/mysql"
+	"github.com/icinga/icinga-kubernetes/internal"
 	"github.com/icinga/icinga-kubernetes/pkg/com"
 	"github.com/icinga/icinga-kubernetes/pkg/database"
 	"github.com/icinga/icinga-kubernetes/pkg/periodic"
@@ -17,6 +18,7 @@ import (
 	"k8s.io/client-go/kubernetes"
 	kclientcmd "k8s.io/client-go/tools/clientcmd"
 	"k8s.io/klog/v2"
+	"os"
 	"strings"
 	"time"
 )
@@ -34,6 +36,12 @@ func main() {
 
 	klog.InitFlags(nil)
 
+	flag.BoolFunc("version", "print version and exit", func(_ string) error {
+		internal.Version.Print()
+		os.Exit(0)
+
+		return nil
+	})
 	flag.StringVar(&config, "config", "./config.yml", "path to the config file")
 	flag.Parse()
 
diff --git a/internal/version.go b/internal/version.go
new file mode 100644
index 00000000..2e1ac136
--- /dev/null
+++ b/internal/version.go
@@ -0,0 +1,10 @@
+package internal
+
+import (
+	"github.com/icinga/icinga-kubernetes/pkg/version"
+)
+
+// Version contains version and Git commit information.
+//
+// The placeholders are replaced on `git archive` using the `export-subst` attribute.
+var Version = version.Version("Icinga Kubernetes", "0.1.0", "$Format:%(describe)$", "$Format:%H$")