initial commit

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py .
+
+EXPOSE 8080
+
+CMD ["gunicorn", "--bind", "0.0.0.0:8080", "app:app"]
+

app.py

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+import os
+import requests
+import urllib3
+from requests.auth import HTTPBasicAuth
+
+from flask import Flask, request, Response
+
+# Suppress warnings about self-signed certificates
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+app = Flask(__name__)
+
+
+api_key = os.getenv("API_KEY")
+api_secret = os.getenv("API_SECRET")
+API_URL = os.getenv("API_URL")
+HEALTHY_STATUS = os.getenv("HEALTHY_STATUS")
+JSONROWS = os.getenv("JSONROWS")
+
+
+@app.route("/check")
+def check():
+    name = request.args.get("name")
+
+    if not name:
+        return Response(
+            "Missing name parameter\n",
+            status=400,
+            mimetype="text/plain"
+        )
+
+    try:
+        session = requests.Session()
+        session.auth = HTTPBasicAuth(api_key, api_secret)
+        session.headers.update({"Accept": "application/json"})
+
+        response = session.get(
+            API_URL,
+            timeout=10,
+            verify=False,
+        )
+
+        response.raise_for_status()
+
+        data = response.json()
+
+        gateway = next(
+            (
+                row for row in data.get(JSONROWS, [])
+                if row.get("name", "").lower() == name.lower()
+            ),
+            None
+        )
+
+
+        if gateway is None:
+            return Response(
+                f"{name} not found\n",
+                status=400,
+                mimetype="text/plain"
+            )
+
+        status = gateway.get("status", "").lower()
+
+        if status == HEALTHY_STATUS:
+            return Response(
+                "OK\n",
+                status=200,
+                mimetype="text/plain"
+            )
+
+        return Response(
+            f"Status is {status}\n",
+            status=503,
+            mimetype="text/plain"
+        )
+
+    except requests.exceptions.RequestException as ex:
+        return Response(
+            f"API communication error: {ex}\n",
+            status=500,
+            mimetype="text/plain"
+        )
+
+    except ValueError:
+        return Response(
+            "Invalid JSON received from API\n",
+            status=500,
+            mimetype="text/plain"
+        )
+
+    except Exception as ex:
+        return Response(
+            f"Unexpected error: {ex}\n",
+            status=500,
+            mimetype="text/plain"
+        )
+
+
+@app.route("/health")
+def health():
+    return Response(
+        "healthy\n",
+        status=200,
+        mimetype="text/plain"
+    )
+
+
+if __name__ == "__main__":
+    app.run(
+        host="0.0.0.0",
+        port=8080
+    )
+

docker-compose.yml

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+services:
+  host-check:
+    build: .
+    container_name: host-check
+    restart: unless-stopped
+    ports:
+      - "8765:8080"
+    environment:
+      API_KEY: 'key'
+      API_SECRET: 'secret'
+#      API_URL: "https://192.168.0.23/api/routes/gateway/status"
+#      HEALTHY_STATUS: "none"
+#      JSONROWS: "items"
+      API_URL: "https://192.168.0.23/api/routing/settings/searchGateway" # Requires System: Gateways
+      JSONROWS: "rows"
+      HEALTHY_STATUS: "online"

requirements.txt

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+flask
+requests
+gunicorn
+