From e98fb543b788bee909cff787e7e6c8abc1e43728 Mon Sep 17 00:00:00 2001
From: 12ww1160 <arne_teuke@confdroid.com>
Date: Fri, 12 Dec 2025 18:37:52 +0100
Subject: [PATCH] OP#253 add build stage prometheus rpm

---
 Jenkinsfile | 88 +++++++++++++++++++++++++++++++----------------------
 1 file changed, 51 insertions(+), 37 deletions(-)

diff --git a/Jenkinsfile b/Jenkinsfile
index b15dde4..55643d9 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -75,47 +75,61 @@ pipeline {
       }
 
       stage('Build Prometheus RPM') {
-            steps {
-                script {
-                    def version = sh(
-                        script: 'curl -s https://api.github.com/repos/prometheus/prometheus/releases/latest | grep \'"tag_name":\' | sed -E \'s/.*\\"([^\\"]+)\\".*/\\\\1/\' | sed \'s/v//\'',
-                        returnStdout: true
-                    ).trim()
-                    echo "Building Prometheus ${version}"
+        steps {
+            script {
+                // get tag_name from GitHub and strip leading "v"
+                def version = sh(
+                    script: "curl -s https://api.github.com/repos/prometheus/prometheus/releases/latest | python -c 'import sys,json;print(json.load(sys.stdin)[\"tag_name\"].lstrip(\"v\"))'",
+                    returnStdout: true
+                ).trim()
 
-                    def downloadUrl = "https://github.com/prometheus/prometheus/releases/download/v${version}/prometheus-${version}.linux-amd64.tar.gz"
-                    sh "curl -L -o prometheus.tar.gz ${downloadUrl}"
-                    sh 'tar xzf prometheus.tar.gz'
-                    def extractDir = "prometheus-${version}.linux-amd64"
+                echo "Building Prometheus ${version}"
 
-                    // Prepare build directory structure
-                    sh """
-                        mkdir -p build/prometheus/usr/bin build/prometheus/etc/prometheus build/prometheus/usr/share/prometheus
-                        cp ${extractDir}/prometheus build/prometheus/usr/bin/
-                        cp ${extractDir}/promtool build/prometheus/usr/bin/
-                        cp ${extractDir}/prometheus.yml build/prometheus/etc/prometheus/
-                        cp -r ${extractDir}/consoles build/prometheus/usr/share/prometheus/
-                        cp -r ${extractDir}/console_libraries build/prometheus/usr/share/prometheus/
-                    """
+                def downloadUrl = "https://github.com/prometheus/prometheus/releases/download/v${version}/prometheus-${version}.linux-amd64.tar.gz"
+                echo "Downloading ${downloadUrl}"
 
-                    sh """
-                        fpm -s dir \\
-                            -t rpm \\
-                            -n prometheus \\
-                            --version \${version} \\
-                            --architecture x86_64 \\
-                            --description 'Prometheus monitoring server and time series database' \\
-                            --url 'https://prometheus.io' \\
-                            --license 'Apache-2.0' \\
-                            --vendor 'Prometheus Team' \\
-                            --maintainer '12ww1160@confdroid.com' \\
-                            -C build/prometheus \\
-                            -f
-                    """
-                    sh 'rm -rf build/prometheus prometheus.tar.gz ${extractDir}'
-                }
-            }
+                sh """
+                    set -e
+                    # download and extract
+                    curl -fL -o prometheus.tar.gz "${downloadUrl}"
+                    tar xzf prometheus.tar.gz
+
+                    extractDir="prometheus-${version}.linux-amd64"
+
+                    # prepare filesystem layout for fpm
+                    rm -rf build/prometheus
+                    mkdir -p build/prometheus/usr/bin build/prometheus/etc/prometheus build/prometheus/usr/share/prometheus
+
+                    cp "\${extractDir}/prometheus" build/prometheus/usr/bin/
+                    cp "\${extractDir}/promtool" build/prometheus/usr/bin/
+                    # prometheus.yml may not exist in all releases (it usually does). ignore failure.
+                    cp "\${extractDir}/prometheus.yml" build/prometheus/etc/prometheus/ || true
+                    cp -r "\${extractDir}/consoles" build/prometheus/usr/share/prometheus/ || true
+                    cp -r "\${extractDir}/console_libraries" build/prometheus/usr/share/prometheus/ || true
+                """
+
+                // run fpm (note: ${version} is interpolated by Groovy into the shell)
+                sh """
+                    fpm -s dir \
+                        -t rpm \
+                        -n prometheus \
+                        --version ${version} \
+                        --architecture x86_64 \
+                        --description 'Prometheus monitoring server and time series database' \
+                        --url 'https://prometheus.io' \
+                        --license 'Apache-2.0' \
+                        --vendor 'Prometheus Team' \
+                        --maintainer '12ww1160@confdroid.com' \
+                        -C build/prometheus \
+                        -f
+                """
+
+                // cleanup
+                sh "rm -rf build/prometheus prometheus.tar.gz prometheus-${version}.linux-amd64"
+          }
         }
+      }
+
 
       stage('update repo') {
         steps {