Add simple Gotify Support

README.md

@@ -47,24 +47,55 @@ The certificates, and keys need these names:
 
 ### Change Timezone
 If you need the timezone to match the local machine, you can map the `/etc/localtime` into the container.
-```
+```bash
 docker run ... -v /etc/localtime:/etc/localtime:ro
 ```
 
+### Enable Gotify Notifications
+If you need to recieve [Gotify](https://github.com/gotify/server/) Notifications, simply add following variables to your deployment:
+```yaml
+docker run -d \
+    -e AUTOHEAL_CONTAINER_LABEL=all \
+    -e AUTOHEAL_NOTIFICATION_GOTIFY_URL="http://gotify" \
+    -e AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN="xxxxxxxxxxxx"
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    autoheal    
+```
+
+### Docker-compose
+This is an example for docker compose file.
+```yaml
+version: "3.4"
+services:
+  autoheal:
+    container_name: autoheal
+    restart: always
+    image: willfarrell/autoheal:latest
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      - AUTOHEAL_CONTAINER_LABEL=autoheal
+      - AUTOHEAL_INTERVAL=5
+      - AUTOHEAL_NOTIFICATION_GOTIFY_URL=http://gotify
+      - AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN=xxxxxxxxxxxxx
+```
 
 ## ENV Defaults
-```
+```yaml
 AUTOHEAL_CONTAINER_LABEL=autoheal
 AUTOHEAL_INTERVAL=5   # check every 5 seconds
 AUTOHEAL_START_PERIOD=0   # wait 0 seconds before first health check
 AUTOHEAL_DEFAULT_STOP_TIMEOUT=10   # Docker waits max 10 seconds (the Docker default) for a container to stop before killing during restarts (container overridable via label, see below)
 DOCKER_SOCK=/var/run/docker.sock   # Unix socket for curl requests to Docker API
 CURL_TIMEOUT=30     # --max-time seconds for curl requests to Docker API
 WEBHOOK_URL=""    # post message to the webhook if a container was restarted (or restart failed)
+AUTOHEAL_NOTIFICATION_GOTIFY_URL=""    # Gotify URL with protocol and Port if needed, e.g. http://gotify:8080 or https://gotify
+AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN=""  # Gotify Token
+AUTOHEAL_NOTIFICATION_GOTIFY_TITLE="Docker Autoheal"   # Gotify Notification Title
 ```
 
 ### Optional Container Labels
-```
+```yaml
 autoheal.stop.timeout=20        # Per containers override for stop timeout seconds during restart
 ```
 

docker-entrypoint

@@ -7,9 +7,11 @@ set -o pipefail
 DOCKER_SOCK=${DOCKER_SOCK:-/var/run/docker.sock}
 UNIX_SOCK=""
 CURL_TIMEOUT=${CURL_TIMEOUT:-30}
-WEBHOOK_URL=${WEBHOOK_URL:-""}
 WEBHOOK_JSON_KEY=${WEBHOOK_JSON_KEY:-"text"}
 APPRISE_URL=${APPRISE_URL:-""}
+AUTOHEAL_NOTIFICATION_GOTIFY_URL=${AUTOHEAL_NOTIFICATION_GOTIFY_URL:-""}
+AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN=${AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN:-""}
+AUTOHEAL_NOTIFICATION_GOTIFY_TITLE=${AUTOHEAL_NOTIFICATION_GOTIFY_TITLE:-"Docker Autoheal"}
 
 # only use unix domain socket if no TCP endpoint is defined
 case "${DOCKER_SOCK}" in
@@ -83,6 +85,12 @@ notify_post_restart_script() {
     # execute post restart script as background process to prevent healer from blocking
     $POST_RESTART_SCRIPT "$@" &
   fi
+
+  if [ -n "$AUTOHEAL_NOTIFICATION_GOTIFY_URL" ]
+  then
+    # execute gotify request as background process to prevent healer from blocking
+    curl -fsS -m 5 --retry 3 -o /dev/null "$AUTOHEAL_NOTIFICATION_GOTIFY_URL/message?token=$AUTOHEAL_NOTIFICATION_GOTIFY_TOKEN" -F "title=$AUTOHEAL_NOTIFICATION_GOTIFY_TITLE" -F "message=$@"
+  fi
 }
 
 # https://towardsdatascience.com/proper-ways-to-pass-environment-variables-in-json-for-curl-post-f797d2698bf3