Initial commit

DockerFile

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+FROM python:3-alpine
+
+ADD dst.py /
+
+RUN pip install docker
+
+VOLUME [ "/data" ]
+
+CMD [ "python", "./dst.py" ]

README.md

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+# Docker Status
+
+Simple status page using Docker sdk and healthcheck.
+
+## Options
+
+Environment variable | Description | Default
+--- | --- | ---
+DOCKER_* | Docker client options | [Doc](https://docker-py.readthedocs.io/en/stable/client.html#docker.client.from_env)
+DST_PATH | Json file output | `/data/status.json`
+DST_INTERVAL | Update interval is seconds | `30`
+DST_FILTER_LABEL | Filter visible containers with label | `False`
+DST_NAME_LABEL | Override container name with label | `False`
+DST_URL_LABEL | Provide url with label | `False`
+
+## TODO
+
+[x] Json periodic static
+[ ] Static Front
+[ ] Groups
+[ ] Events
+[ ] Gotify

docker-compose.yml

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+version: '2'
+
+volumes:
+  data:
+    driver: local
+
+services:
+  dst:
+    build: .
+    restart: always
+    container_name: dst
+    environment:
+      - DST_FILTER_LABEL=fr.wadza.dst.visible=true
+      - DST_NAME_LABEL=fr.wadza.dst.name
+      - DST_URL_LABEL=fr.wadza.dst.url
+    labels:
+      - fr.wadza.dst.visible=true
+      - fr.wadza.dst.name=Status
+      - fr.wadza.dst.url=https://status.wadza.fr
+    volumes:
+      - data:/data
+      - /var/run/docker.sock:/var/run/docker.sock
+    mem_limit: 512m
+    mem_reservation: 128m
+    memswap_limit: 0

dst.py

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+import docker
+import json
+import time
+import os
+
+path = os.environ.get("DST_PATH", "/data/status.json")
+interval = int(os.environ.get("DST_INTERVAL", "30"))
+filter_label = os.environ.get("DST_FILTER_LABEL", False)
+filters = {}
+if filter_label:
+    filters["label"] = filter_label
+name_label = os.environ.get("DST_NAME_LABEL", False)
+url_label = os.environ.get("DST_URL_LABEL", False)
+
+client = docker.from_env()
+
+def formatContainer(container):
+    state = container.attrs.get("State", {})
+    health = state.get("Health", {})
+    return {
+        "name": container.labels.get(name_label, container.name),
+        "url": container.labels.get(url_label),
+        "status": container.status,
+        "start": state.get("StartedAt"),
+        "stop": state.get("FinishedAt"),
+        "health": {
+            "status": health.get("Status", "none"),
+            "fails": health.get("FailingStreak", 0)
+        }
+    }
+
+def loop():
+    while True:
+        try:
+            report = list(
+                map(formatContainer,
+                    client.containers.list(all=True, filters=filters)))
+            with open(path, 'w') as outfile:
+                json.dump(report, outfile)
+        except docker.errors.NotFound:
+            print('Container bad move. Restarting.')
+        time.sleep(interval)
+
+try:
+    loop()
+except KeyboardInterrupt:
+    print('\n\nKeyboard exception received. Exiting.')
+    exit()