Merge pull request #22 from tblanarik/tblanarik/dockerize

Move to Docker instead of Azure Functions

.github/workflows/deploy-docker.yml

@@ -0,0 +1,48 @@
+# Docs for the Azure Web Apps Deploy action: https://github.com/Azure/webapps-deploy
+# More GitHub Actions for Azure: https://github.com/Azure/actions
+
+name: Build and deploy container app to Azure Web App - spotbot-docker
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: 'ubuntu-latest'
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Log in to registry
+      uses: docker/login-action@v2
+      with:
+        registry: https://index.docker.io/v1/
+        username: ${{ secrets.AzureAppService_ContainerUsername_630053f317634033aaa0862db4b07802 }}
+        password: ${{ secrets.AzureAppService_ContainerPassword_71079aba47ee4c1196a01eaf134b3447 }}
+
+    - name: Build and push container image to registry
+      uses: docker/build-push-action@v3
+      with:
+        push: true
+        tags: index.docker.io/${{ secrets.AzureAppService_ContainerUsername_630053f317634033aaa0862db4b07802 }}/python:${{ github.sha }}
+        file: ./Dockerfile
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    environment:
+      name: 'production'
+      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}
+
+    steps:
+    - name: Deploy to Azure Web App
+      id: deploy-to-webapp
+      uses: azure/webapps-deploy@v2
+      with:
+        app-name: 'spotbot-docker'
+        slot-name: 'production'
+        publish-profile: ${{ secrets.AzureAppService_PublishProfile_e744ed7c6ffe4564a93b0e3c07ec1ed1 }}
+        images: 'index.docker.io/${{ secrets.AzureAppService_ContainerUsername_630053f317634033aaa0862db4b07802 }}/python:${{ github.sha }}'

Dockerfile

@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1
+
+FROM python:3.13
+WORKDIR /
+COPY requirements.txt .
+RUN pip3 install -r requirements.txt
+COPY . .
+EXPOSE 50505
+ENTRYPOINT ["gunicorn", "app:app"]

README.md

@@ -2,7 +2,7 @@
 
 ## Description
 
-Spotbot is an Azure Function App to convert [HamAlert](https://hamalert.org/) alerts from [POTA](https://pota.app) or [SOTA](https://www.sota.org.uk/) in to a message format that can be forwarded on to a Discord channel webhook.
+Spotbot is an application to convert [HamAlert](https://hamalert.org/) alerts from [POTA](https://pota.app) or [SOTA](https://www.sota.org.uk/) in to a message format that can be forwarded on to a Discord channel webhook.
 
 | HamAlert Configuration |
 | -- |
@@ -19,15 +19,17 @@ You can find a live, working version of this bot in the [Cascadia Radio](https:/
 
 ## Config
 
-The Azure Function App expects three environment variables: 
+The app expects four environment variables: 
 - `TARGET_URL` - the webhook URL from the target Discord channel.
 - `LOOKBACK_SECONDS` - the number of seconds to look backwards for previous messages to update instead of posting a new one
 - `TABLE_NAME` - the name of the table in the Azure Storage Account where the last messageIds will be stored for each callsign
+- `AzureWebJobsStorage` - the full connection string to the Azure Storage Account
+- `SECRET_ENDPOINT` - the name of the endpoint, kept secret to prevent abuse / unwanted messages
 
 ## Deploy Notes
 
 - Some basic tests run in `tests.py` on the creation of a new PR
-- To deploy, manually run `main_hamalertspotbot.yml`
+- To deploy, manually run `deploy-docker.yml`
     - This will deploy to the staging slot for testing. 
     - The staging `TARGET_URL` points to my private Discord server
     - `LOOKBACK_SECONDS` is set to only 300 (instead of 7200) for easier testing.

app.py

@@ -0,0 +1,28 @@
+import os
+from flask import Flask, request, make_response
+import logging
+import spotbot as sb
+import tables
+import discord_http
+app = Flask(__name__)
+endpoint = os.environ.get('SECRET_ENDPOINT')
+
+@app.route(f'/{endpoint}', methods=["POST"])
+def run():
+    try:
+        sb.SpotBot(request, tables.HamAlertTable(), discord_http.DiscordHttp()).process()
+    except Exception as _excpt:
+        logging.error(f"Exception occurred: {_excpt}")
+        return make_response(f"Exception occurred: {_excpt}", 500)
+    else:
+        return make_response("Accepted", 202)
+
+'''
+Empty endpoint used for keeping the container on and loaded
+'''
+@app.route('/', methods=["GET"])
+def always_on():
+    return make_response("OK", 200)
+
+if __name__ == "__main__":
+    app.run()

gunicorn_config.py

@@ -0,0 +1,8 @@
+import os
+
+workers = int(os.environ.get('GUNICORN_PROCESSES', '2'))
+threads = int(os.environ.get('GUNICORN_THREADS', '4'))
+# timeout = int(os.environ.get('GUNICORN_TIMEOUT', '120'))
+bind = os.environ.get('GUNICORN_BIND', '0.0.0.0:50505')
+forwarded_allow_ips = '*'
+secure_scheme_headers = { 'X-Forwarded-Proto': 'https' }

requirements.txt

@@ -1,4 +1,5 @@
-azure-functions
 azure-data-tables
 requests
-pytz
+pytz
+flask
+gunicorn