From 218359a3ab9ad6bdf4460da15b1576503e435f45 Mon Sep 17 00:00:00 2001
From: Laurent Defert <lds@stamus-networks.com>
Date: Fri, 8 Jan 2021 16:14:36 +0100
Subject: [PATCH] cmd: version command

---
 .gitlab-ci.yml           |  8 ++++----
 build/ci/build_debian.sh |  4 +++-
 cmd/version.go           | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+), 5 deletions(-)
 create mode 100644 cmd/version.go

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fc56160..bd5a55e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,8 +9,8 @@ build-binary-buster:
     - ./build/ci/build_debian.sh
   after_script:
     - gzip gopherCap
-  rules:
-    - if: '$CI_BUILD_TAG =~ /^build-.*/'
+  only:
+    - tags
 
 build-binary-ubuntu-2004:
   image: ubuntu:20.04
@@ -23,5 +23,5 @@ build-binary-ubuntu-2004:
     - ./build/ci/build_debian.sh
   after_script:
     - gzip gopherCap
-  rules:
-    - if: '$CI_BUILD_TAG =~ /^build-.*/'
+  only:
+    - tags
diff --git a/build/ci/build_debian.sh b/build/ci/build_debian.sh
index 802a7bb..07612a1 100755
--- a/build/ci/build_debian.sh
+++ b/build/ci/build_debian.sh
@@ -5,11 +5,13 @@ GO_VERSION=${GO_VERSION:-1.15.6}
 GOROOT_BASE=${GOROOT_BASE:-/opt}
 GOROOT=$GOROOT_BASE/go
 GOPATH=${GOPATH:-/var/go}
+GOPHERCAP_VERSION=${CI_COMMIT_TAG:-git $CI_COMMIT_SHORT_SHA}
 
 apt-get update && apt-get install -y libpcap-dev wget build-essential
 wget -O /tmp/golang.tgz https://golang.org/dl/go${GO_VERSION}.linux-amd64.tar.gz
 tar -xzf /tmp/golang.tgz -C $GOROOT_BASE
 mkdir $GOPATH
 $GOROOT/bin/go get -u ./
-$GOROOT/bin/go build -o ./gopherCap ./
+
+$GOROOT/bin/go build -ldflags="-X 'gopherCap/cmd.Version=$GOPHERCAP_VERSION'" -o ./gopherCap ./
 ./gopherCap --help
diff --git a/cmd/version.go b/cmd/version.go
new file mode 100644
index 0000000..6372248
--- /dev/null
+++ b/cmd/version.go
@@ -0,0 +1,37 @@
+/*
+Copyright © 2020 Stamus Networks oss@stamus-networks.com
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var Version = "development"
+
+// versionCmd represents the version command
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Shows gopherCap version.",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("gopherCap", Version)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}