Add weechat session monitoring

flask-monit/.gitignore

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+venv

flask-monit/monitor.py

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+""" monitor
+
+Monitor weechat sessions running and their relay availability """
+
+import re
+import subprocess
+from flask import Flask, request
+import settings
+
+LOGGER_NAME = __name__
+
+app = Flask(__name__)
+
+
+@app.route('/', methods=['GET'])
+def home_view():
+    # We check whether weechat is running
+    url_regex = re.compile(
+        r'(?:https?://)?([^/:]*){}(?::[0-9]+)?/?'.format(
+            settings.URL_SUFFIX))
+    find_res = url_regex.match(request.base_url)
+    if find_res is None:
+        return 'Badly formed url\n', 400
+    user = find_res.group(1)
+
+    try:
+        output = subprocess.check_output(
+            ['ps', '-u', user, '--format=cmd']).decode('utf-8')
+        lines = output.strip().split('\n')[1:]
+        for line in lines:
+            if line.strip() == settings.PS_COMMAND:
+                return 'OK\n', 200
+    except subprocess.CalledProcessError as exn:
+        return 'Internal error: {}\n'.format(exn), 500
+    return 'Weechat not running\n', 406
+
+
+@app.before_first_request  # FIXME this should be run on startup...
+def startup_actions():
+    pass  # Nothing needed for now

flask-monit/requirements.txt

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+click==6.7
+Flask==1.0.2
+itsdangerous==0.24
+Jinja2==2.10
+MarkupSafe==1.0
+Werkzeug==0.14.1

flask-monit/settings.py

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+""" General-purpose settings """
+
+PS_COMMAND = "weechat"
+URL_SUFFIX = ".weechat.tobast.fr"

flask-monit/wsgi.py

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+import sys
+import os
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from monitor import app as application