#90 create kube_ops_view package

.gitignore

@@ -3,6 +3,6 @@ __pycache__
 *.pyc
 .idea/
 **/node_modules/
-static/build/
+kube_ops_view/static/build/
 *-secret
 npm-debug.log*

Dockerfile

@@ -12,13 +12,11 @@ EXPOSE 8080
 COPY requirements.txt /
 RUN pip3 install -r /requirements.txt
 
-COPY app.py /
-COPY templates /templates
+COPY kube_ops_view /
 COPY app /app
-COPY static /static
 
 WORKDIR /app
 RUN npm install && npm run build
 
 WORKDIR /
-CMD /app.py
+ENTRYPOINT ["/usr/bin/python3", "-m", "kube_ops_view"]

README.rst

@@ -45,7 +45,7 @@ You can run the app locally:
     $ pip3 install -r requirements.txt
     $ kubectl proxy &
     $ (cd app && npm start &)
-    $ ./app.py
+    $ python3 -m kube_ops_view
 
 Now direct your browser to http://localhost:8080
 
@@ -74,7 +74,7 @@ You can start the app in "mock mode" to see all UI features without running any
 
     $ pip3 install -r requirements.txt
     $ (cd app && npm start &)
-    $ MOCK=true ./app.py
+    $ MOCK=true python3 -m kube_ops_view
 
 You can also run the latest Docker image directly:
 

app/package.json

@@ -4,7 +4,7 @@
   "description": "=========================== Kubernetes Operational View ===========================",
   "main": "src/app.js",
   "config": {
-    "buildDir": "../static/build"
+    "buildDir": "../kube_ops_view/static/build"
   },
   "scripts": {
     "prestart": "npm install",

kube_ops_view/__main__.py

@@ -0,0 +1,3 @@
+from .main import main
+
+main()

kube_ops_view/main.py

@@ -21,6 +21,7 @@ import signal
 import string
 import time
 import tokens
+from pathlib import Path
 from queue import Queue
 from redlock import Redlock
 
@@ -244,14 +245,16 @@ def health():
 @app.route('/')
 @authorize
 def index():
-    app_js = None
-    for entry in os.listdir('static/build'):
-        if entry.startswith('app'):
-            app_js = entry
-            if app.debug:
-                # cache busting for local development
-                app_js += '?_={}'.format(time.time())
-            break
+    static_build_path = Path(__file__).parent / 'static' / 'build'
+    candidates = sorted(static_build_path.glob('app*.js'))
+    if candidates:
+        app_js = candidates[0].name
+        if app.debug:
+            # cache busting for local development
+            app_js += '?_={}'.format(time.time())
+    else:
+        logging.error('Could not find JavaScript application bundle app*.js in {}'.format(static_build_path))
+        flask.abort(503, 'JavaScript application bundle not found (missing build)')
     return flask.render_template('index.html', app_js=app_js)
 
 
@@ -553,7 +556,7 @@ def exit_gracefully(signum, frame):
     gevent.spawn(shutdown)
 
 
-if __name__ == '__main__':
+def main():
     signal.signal(signal.SIGTERM, exit_gracefully)
     http_server = gevent.wsgi.WSGIServer(('0.0.0.0', SERVER_PORT), app)
     gevent.spawn(update)