add monitoring scripts

appinfo.yml

@@ -6,6 +6,16 @@ templatefiles:
   - src: backupmanager.j2
     dest: ~/backupmanager
     mode: "0755"
+  - src: monitor@.service.j2
+    dest: ~/.config/systemd/user/monitor@.service
+  - src: monitor.socket.j2
+    dest: ~/.config/systemd/user/monitor.socket
+  - src: monitor.sh.j2
+    dest: ~/monitor.sh
+    mode: "0755"
+  - src: monitor-test.sh.j2
+    dest: ~/monitor-test.sh
+    mode: "0755"
 backuptype: none
 configdefinition:
   "$id": "backup manager config"
@@ -72,3 +82,22 @@ configdefinition:
                     description: Repositories where the latest backup is older then timeout days will give a warning that there are no recent backups
   required:
     - repos
+exports:
+  monitoring:
+    checks:
+       - name: main
+         message: Backup manager activated
+         interval: 3600
+         type: string
+         okvalue: active
+       - name: lastrun
+         message: Errors last run
+         interval: 3600
+         type: string
+         okvalue: ""
+       - name: lastrunrecent
+         message: Backup manager did not run recently
+         interval: 3600
+         type: string
+         okvalue: "OK"
+

monitor-test.sh.j2

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Usage: ./execute_command_client.sh <command>
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <command>"
+  exit 1
+fi
+
+command="$1"
+
+# Connect to socket and send command
+output=$(nc -U {{ statedir }}/{{ name }}.monitoring <<< "$command")
+
+# Print output
+echo "$output"

monitor.sh.j2

@@ -0,0 +1,18 @@
+#!/bin/bash
+read -r command
+case $command in
+  main)
+    systemctl is-active --user backup-manager.timer
+    ;;
+  lastrun)
+    cat {{ homedir }}/.backupmanager.errors
+    ;;
+  lastrunrecent)
+    [ -f {{ homedir }}/.backupmanager.errors ] && [ $(find {{ homedir }}/.backupmanager.errors -mtime -2) ] && echo "OK" || echo "outdated"
+    ;;
+  *)
+    echo "Parameter unknown"
+    ;;
+esac
+
+

monitor.socket.j2

@@ -0,0 +1,9 @@
+[Unit]
+Description=Execute Command Socket
+
+[Socket]
+ListenStream={{ statedir }}/{{ name }}.monitoring
+Accept=yes
+
+[Install]
+WantedBy=sockets.target

monitor@.service.j2

@@ -0,0 +1,15 @@
+[Unit]
+Description=Execute Command Service
+After=network.target
+Requires=monitor.socket
+
+[Service]
+Type=simple
+ExecStart={{ homedir }}/monitor.sh
+StandardInput=socket
+StandardOutput=socket
+TimeoutStopSec=5
+RuntimeMaxSec=10
+
+[Install]
+WantedBy=sockets.target