feat(podman): add method to generate podman based docker image package

resources/com/cadoles/podman/nfpm.yaml.gotmpl

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+{{ $serviceName := index ( .Env.IMAGE_NAME | strings.Split "/" | coll.Reverse ) 0 }}
+name: "cadoles-pod-{{ $serviceName }}"
+arch: amd64
+platform: linux
+version: "{{ strings.TrimPrefix "v" ( getenv "IMAGE_TAG" "latest" ) }}"
+version_schema: none
+version_metadata: git
+section: "{{ getenv "PACKAGE_SECTION" "default" }}"
+priority: "{{ getenv "PACKAGE_PRIORITY" "optional" }}"
+maintainer: "{{ getenv "PACKAGE_MAINTAINER" "contact@cadoles.com" }}"
+description: "{{ getenv "PACKAGE_DESCRIPTION" "" }}"
+homepage: "{{ getenv "PACKAGE_HOMEPAGE" "https://forge.cadoles.com" }}"
+license: "{{ getenv "PACKAGE_LICENCE" "GPL-3.0" }}"
+depends:
+  - podman
+scripts:
+    postinstall: post-install.sh
+contents:
+  - packager: deb
+    src: pod.service
+    dst: "/usr/lib/systemd/system/cadoles-pod-{{ $serviceName }}.service"
+  - packager: deb
+    src: pod.conf
+    dst: /etc/cadoles-pod-{{ $serviceName }}.conf
+    type: config|noreplace

resources/com/cadoles/podman/pod.conf.gotmpl

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+PODMAN_ARGS="{{ getenv "PODMAN_ARGS" "" }}"

resources/com/cadoles/podman/pod.service.gotmpl

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+[Unit]
+Description={{ .Env.IMAGE_NAME }} pod service
+Wants=network-online.target
+After=network-online.target
+RequiresMountsFor=/run/containers/storage
+
+[Service]
+Type=simple
+Environment=PODMAN_SYSTEMD_UNIT=%n
+EnvironmentFile=-/etc/cadoles-pod-{{ .Env.IMAGE_NAME }}.conf
+Environment=IMAGE_NAME={{ .Env.IMAGE_NAME }} IMAGE_TAG={{ .Env.IMAGE_TAG }}
+PassEnvironment=PODMAN_ARGS IMAGE_NAME IMAGE_TAG
+Restart=on-failure
+TimeoutStopSec=70
+{{ if getenv "SYSTEMD_EXEC_STARTPRE" "" }}
+ExecStartPre={{ .Env.SYSTEMD_EXEC_STARTPRE }}
+{{ end }}
+ExecStart=/bin/sh -c "podman run ${PODMAN_ARGS} '${IMAGE_NAME}:${IMAGE_TAG}'"
+{{ if getenv "SYSTEMD_EXEC_STARTPOST" "" }}
+ExecStartPost={{ .Env.SYSTEMD_EXEC_STARTPOST }}
+{{ end }}
+
+[Install]
+WantedBy=default.target

resources/com/cadoles/podman/post-install.sh.gotmpl

@@ -0,0 +1,79 @@
+#!/bin/sh
+
+# Adapted from https://nfpm.goreleaser.com/tips/
+
+use_systemctl="True"
+systemd_version=0
+if ! command -V systemctl >/dev/null 2>&1; then
+  use_systemctl="False"
+else
+  systemd_version=$( systemctl --version | head -1 | sed 's/systemd //g' | cut -d' ' -f1 )
+fi
+
+SERVICE_NAME="cadoles-pod-{{ .Env.IMAGE_NAME }}"
+
+cleanup() {
+  if [ "${use_systemctl}" = "False" ]; then
+    rm -f /usr/lib/systemd/system/$SERVICE_NAME.service
+  else
+    rm -f /etc/chkconfig/$SERVICE_NAME
+    rm -f /etc/init.d/$SERVICE_NAME
+  fi
+}
+
+cleanInstall() {
+  if [ "${use_systemctl}" = "False" ]; then
+    if command -V chkconfig >/dev/null 2>&1; then
+      chkconfig --add $SERVICE_NAME
+    fi
+
+    service $SERVICE_NAME restart ||:
+  else
+    if [ "${systemd_version}" -lt 231 ]; then
+      printf "\033[31m systemd version %s is less then 231, fixing the service file \033[0m\n" "${systemd_version}"
+      sed -i "s/=+/=/g" /usr/lib/systemd/system/$SERVICE_NAME.service
+    fi
+    systemctl daemon-reload ||:
+    systemctl unmask $SERVICE_NAME ||:
+    systemctl preset $SERVICE_NAME ||:
+    systemctl enable $SERVICE_NAME ||:
+    systemctl restart $SERVICE_NAME ||:
+  fi
+}
+
+upgrade() {
+  if [ "${use_systemctl}" = "False" ]; then
+    service $SERVICE_NAME restart ||:
+  else
+    if [ "${systemd_version}" -lt 231 ]; then
+      printf "\033[31m systemd version %s is less then 231, fixing the service file \033[0m\n" "${systemd_version}"
+      sed -i "s/=+/=/g" /usr/lib/systemd/system/$SERVICE_NAME.service
+    fi
+    systemctl daemon-reload ||:
+    systemctl restart $SERVICE_NAME ||:
+  fi
+
+  echo 'Cleaning up unused images...'
+  podman image prune -f --filter "reference={{ .Env.IMAGE_NAME }}"
+}
+
+action="$1"
+if  [ "$1" = "configure" ] && [ -z "$2" ]; then
+  action="install"
+elif [ "$1" = "configure" ] && [ -n "$2" ]; then
+  action="upgrade"
+fi
+
+case "$action" in
+  "1" | "install")
+    cleanInstall
+    ;;
+  "2" | "upgrade")
+    upgrade
+    ;;
+  *)
+    cleanInstall
+    ;;
+esac
+
+cleanup

vars/gomplate.groovy

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+void call(String sourceTemplate, String destFile, Map env = [:], Map options = [:]) {
+    String gomplateBin = getOrInstallGomplate(options)
+
+    sh """
+    ${exportEnvMap(env)}
+    ${gomplateBin} -f '${sourceTemplate}' > '${destFile}'
+    """
+}
+
+String exportEnvMap(Map env) {
+    String exports = ''
+
+    env.each { item ->
+        exports = """
+        ${exports}
+        export ${item.key}="${item.value}"
+        """
+    }
+
+    return exports
+}
+
+String getOrInstallGomplate(Map options = [:]) {
+    String installDir = options.get('installDir', '/usr/local/bin')
+    String version = options.get('version', '3.10.0')
+    Boolean forceDownload = options.get('forceDownload', false)
+    String downloadUrl = options.get('downloadUrl', "https://github.com/hairyhenderson/gomplate/releases/download/v${version}/gomplate_linux-amd64")
+
+    String gomplateBin = ''
+
+    lock("${env.NODE_NAME}:gomplate-install") {
+        gomplateBin = sh(returnStdout: true, script: 'which gomplate || exit 0').trim()
+
+        if (gomplateBin == '' || forceDownload) {
+            sh("""
+            mkdir -p '${installDir}'
+            curl -o '${installDir}/gomplate' -sSL '${downloadUrl}'
+            chmod +x '${installDir}/gomplate'
+            """)
+
+            gomplateBin = "${installDir}/gomplate"
+        }
+    }
+
+    return gomplateBin
+}

vars/nfpm.groovy

@@ -1,25 +1,37 @@
-// Package project with nfpm
-// See https://nfpm.goreleaser.com/
-def package(Map options = [:]) {
-    String installDir = options.get("nfpmInstallDir", "/usr/local/bin")
-    String nfpmVersion = options.get("nfpmVersion", "2.15.1")
-    String nfpmForceDownload = options.get("nfpmForceDownload", false)
-    String nfpmDownloadUrl = options.get("nfpmDownloadUrl", "https://github.com/goreleaser/nfpm/releases/download/${nfpmVersion}/nfpm_${nfpmVersion}_Linux_x86_64.tar.gz")
-    String nfpmConfig = options.get("nfpmConfig", "nfpm.yaml")
-    String nfpmTarget = options.get("nfpmTarget", ".")
-    String nfpmPackager = options.get("nfpmPackager", "")
+/**
+ * Générer des paquets Debian, RPM, Alpine (ipk) via nfpm
+ * Voir See https://nfpm.goreleaser.com/
+ *
+ * Options:
+ * - installDir - Répertoire d'installation du binaire nfpm, par défaut /usr/local/bin
+ * - version - Version de nfpm à installer, par défaut 2.15.1
+ * - forceDownload - Forcer l'installation de nfpm, par défaut false
+ * - config - Fichier de configuration nfpm à utiliser, par défaut nfpm.yaml
+ * - target - Répertoire cible pour nfpm, par défaut ./dist
+ * - packager - Limiter l'exécution de nfpm à un packager spécifique, par défaut "deb" (i.e. pas de limitation)
+ */
+void call(Map options = [:]) {
+    String installDir = options.get('installDir', '/usr/local/bin')
+    String version = options.get('version', '2.20.0')
+    Boolean forceDownload = options.get('forceDownload', false)
+    String downloadUrl = options.get('downloadUrl', "https://github.com/goreleaser/nfpm/releases/download/v${version}/nfpm_${version}_Linux_x86_64.tar.gz")
+    String config = options.get('config', 'nfpm.yaml')
+    String target = options.get('target', env.WORKSPACE + '/dist')
+    String packager = options.get('packager', 'deb')
 
-    String nfpmBin = sh(returnStdout: true, script: 'which nfpm').trim("")
-    if (nfpmBin == "" || nfpmForceDownload) {
+    String nfpmBin = sh(returnStdout: true, script: 'which nfpm || exit 0').trim()
+    if (nfpmBin == '' || forceDownload) {
         sh("""
         mkdir -p '${installDir}'
-        curl -L '${nfpmDownloadUrl}' > /tmp/nfpm.tar.gz
+        curl -L '${downloadUrl}' > /tmp/nfpm.tar.gz
         tar -C /usr/local/bin -xzf /tmp/nfpm.tar.gz
         """)
+
+        nfpmBin = "${installDir}/nfpm"
     }
 
     sh("""
-        export PATH='${installDir}:${env.PATH}'
-        nfpm --config '${nfpmConfig}' ${nfpmPackager ? "--packager "+nfpmPackager : ""} --target '${nfpmTarget}'
+    mkdir -p '${target}'
+    ${nfpmBin} package --config '${config}' ${packager ? '--packager ' + packager : ''} --target '${target}'
     """)
 }

vars/podman.groovy

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+void buildCadolesPodPackage(String imageName, String imageTag, Map options = [:]) {
+  String destDir = options.get('destDir', env.WORKSPACE + '/dist')
+  Map nfpmOptions = options.get('nfpmOptions', [:])
+
+  nfpmOptions['target'] = destDir
+
+  Map env = options.get('env', [:])
+
+  env['IMAGE_NAME'] = imageName
+  env['IMAGE_TAG'] = imageTag
+
+  withPodmanPackagingTempDir {
+    gomplate('post-install.sh.gotmpl', 'post-install.sh', env)
+    gomplate('pod.service.gotmpl', 'pod.service', env)
+    gomplate('pod.conf.gotmpl', 'pod.conf', env)
+    gomplate('nfpm.yaml.gotmpl', 'nfpm.yaml', env)
+
+    nfpm(nfpmOptions)
+  }
+}
+
+void withPodmanPackagingTempDir(Closure fn) {
+  File tempDir = File.createTempDir()
+  tempDir.deleteOnExit()
+
+  tempDir.mkdirs()
+
+  dir(tempDir.getAbsolutePath()) {
+    List<String> resources = [
+      'com/cadoles/podman/nfpm.yaml.gotmpl',
+      'com/cadoles/podman/pod.conf.gotmpl',
+      'com/cadoles/podman/pod.service.gotmpl',
+      'com/cadoles/podman/post-install.sh.gotmpl',
+    ]
+
+    for (res in resources) {
+      String fileContent = libraryResource res
+      String fileName = res.substring(res.lastIndexOf('/') + 1)
+      writeFile file:fileName, text:fileContent
+    }
+
+    fn()
+  }
+}