nfpm tips to fix this for systemd systems

.goreleaser.yaml

@@ -327,8 +327,9 @@ nfpms:
       
     # signing
     scripts:
-      postinstall: "scripts/after-install.sh"
+      postinstall: "scripts/post-install.sh"
-      preremove: "scripts/before-remove.sh"
+      preremove: "scripts/pre-remove.sh"
+      postremove: "scripts/post-remove.sh"
 
 signs:
   - id: default

scripts/after-install.sh

@@ -1,29 +0,0 @@
-#!/bin/sh
-
-# This file is used by deb, rpm and BSD packages.
-# FPM adds this as the after-install script.
-# Edit this file as needed for your application.
-# This file is only installed if FORMULA is set to service.
-
-OS="$(uname -s)"
-
-if [ "${OS}" = "Linux" ]; then
-  # Make a user and group for this app, but only if it does not already exist.
-  id unpoller >/dev/null 2>&1  || \
-    useradd --system --user-group --no-create-home --home-dir /tmp --shell /bin/false unpoller
-elif [ "${OS}" = "OpenBSD" ]; then
-  id unpoller >/dev/null 2>&1  || \
-    useradd  -g =uid -d /tmp -s /bin/false unpoller
-elif [ "${OS}" = "FreeBSD" ]; then
-  id unpoller >/dev/null 2>&1  || \
-    pw useradd unpoller -d /tmp -w no -s /bin/false
-else
-  echo "Unknown OS: ${OS}, please add system user unpoller manually."
-fi
-
-if [ -x "/bin/systemctl" ]; then
-  # Reload and restart - this starts the application as user nobody.
-  /bin/systemctl daemon-reload
-  /bin/systemctl enable unpoller
-  /bin/systemctl restart unpoller
-fi

scripts/before-remove.sh

@@ -1,17 +0,0 @@
-#!/bin/bash
-
-# This file is used by rpm and deb packages. FPM use.
-# Edit this file as needed for your application.
-# This file is only installed if FORMULA is set to service.
-
-if [ "$1" = "upgrade" ] || [ "$1" = "1" ] ; then
-  exit 0
-fi
-
-if [ -x "/bin/systemctl" ]; then
-  /bin/systemctl stop unpoller
-  /bin/systemctl disable unpoller
-elif [ -x /usr/sbin/service ]; then
-  /usr/sbin/service unpoller stop
-  /usr/sbin/service unpoller disable
-fi

scripts/post-install.sh

@@ -0,0 +1,100 @@
+#!/bin/sh
+
+# Step 1, decide if we should use systemd or init/upstart
+use_systemctl="True"
+systemd_version=0
+if ! command -V systemctl >/dev/null 2>&1; then
+  use_systemctl="False"
+else
+    systemd_version=$(systemctl --version | head -1 | sed 's/systemd //g')
+fi
+
+cleanup() {
+    # This is where you remove files that were not needed on this platform / system
+    if [ "${use_systemctl}" = "False" ]; then
+        rm -f /etc/systemd/service/unpoller.service
+    else
+        rm -f /etc/chkconfig/unpoller
+        rm -f /etc/init.d/unpoller
+    fi
+}
+
+OS="$(uname -s)"
+
+cleanInstall() {
+    printf "\033[32m Post Install of an clean install\033[0m\n"
+    # Step 3 (clean install), enable the service in the proper way for this platform
+    
+
+    if [ "${OS}" = "Linux" ]; then
+        # Make a user and group for this app, but only if it does not already exist.
+        id unpoller >/dev/null 2>&1  || \
+            useradd --system --user-group --no-create-home --home-dir /tmp --shell /bin/false unpoller
+    elif [ "${OS}" = "OpenBSD" ]; then
+        id unpoller >/dev/null 2>&1  || \
+            useradd  -g =uid -d /tmp -s /bin/false unpoller
+    elif [ "${OS}" = "FreeBSD" ]; then
+        id unpoller >/dev/null 2>&1  || \
+            pw useradd unpoller -d /tmp -w no -s /bin/false
+    else
+        echo "Unknown OS: ${OS}, please add system user unpoller manually."
+    fi
+
+    if [ "${use_systemctl}" = "False" ]; then
+        if command -V chkconfig >/dev/null 2>&1; then
+          chkconfig --add unpoller
+        fi
+
+        service unpoller restart ||:
+    else
+        # rhel/centos7 cannot use ExecStartPre=+ to specify the pre start should be run as root
+        # even if you want your service to run as non root.
+        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" /etc/systemd/service/unpoller.service
+        fi
+        printf "\033[32m Reload the service unit from disk\033[0m\n"
+        systemctl daemon-reload ||:
+        printf "\033[32m Unmask the service\033[0m\n"
+        systemctl unmask unpoller ||:
+        printf "\033[32m Set the preset flag for the service unit\033[0m\n"
+        systemctl preset unpoller ||:
+        printf "\033[32m Set the enabled flag for the service unit\033[0m\n"
+        systemctl enable unpoller ||:
+        systemctl restart unpoller ||:
+    fi
+}
+
+upgrade() {
+    printf "\033[32m Post Install of an upgrade\033[0m\n"
+    # Step 3(upgrade), do what you need
+    
+}
+
+# Step 2, check if this is a clean install or an upgrade
+action="$1"
+if  [ "$1" = "configure" ] && [ -z "$2" ]; then
+  # Alpine linux does not pass args, and deb passes $1=configure
+  action="install"
+elif [ "$1" = "configure" ] && [ -n "$2" ]; then
+    # deb passes $1=configure $2=<current version>
+    action="upgrade"
+fi
+
+case "$action" in
+  "1" | "install")
+    cleanInstall
+    ;;
+  "2" | "upgrade")
+    printf "\033[32m Post Install of an upgrade\033[0m\n"
+    upgrade
+    ;;
+  *)
+    # $1 == version being installed
+    printf "\033[32m Alpine\033[0m"
+    cleanInstall
+    ;;
+esac
+
+# Step 4, clean up unused files, yes you get a warning when you remove the package, but that is ok.
+cleanup

scripts/post-remove.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# Step 1, decide if we should use systemd or init/upstart
+use_systemctl="True"
+systemd_version=0
+if ! command -V systemctl >/dev/null 2>&1; then
+  use_systemctl="False"
+else
+    systemd_version=$(systemctl --version | head -1 | sed 's/systemd //g')
+fi
+
+remove() {
+    printf "\033[32m Post Remove of a normal remove\033[0m\n"
+    echo "Remove" > /tmp/postremove-proof
+}
+
+purge() {
+    printf "\033[32m Post Remove purge, deb only\033[0m\n"
+    echo "Purge" > /tmp/postremove-proof
+}
+
+upgrade() {
+    printf "\033[32m Post Remove of an upgrade\033[0m\n"
+    echo "Upgrade" > /tmp/postremove-proof
+}
+
+echo "$@"
+
+action="$1"
+
+case "$action" in
+  "0" | "remove")
+    remove
+    ;;
+  "1" | "upgrade")
+    upgrade
+    ;;
+  "purge")
+    purge
+    ;;
+  *)
+    printf "\033[32m Alpine\033[0m"
+    remove
+    ;;
+esac

scripts/pre-remove.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Step 1, decide if we should use systemd or init/upstart
+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')
+fi
+
+if [ "$1" = "upgrade" ] || [ "$1" = "1" ] ; then
+  exit 0
+fi
+
+if [ "${use_systemctl}" = "False" ]; then
+  service unpoller stop
+  service unpoller disable
+else
+  systemctl stop unpoller
+  systemctl disable unpoller
+fi