84 lines
2 KiB
Python
84 lines
2 KiB
Python
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import logging
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import json
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from flask import request, Blueprint, abort, Response
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from flask_login import current_user
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from app import userevents
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from auth.decorators import require_session_login
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from data.userevent import CannotReadUserEventsException
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logger = logging.getLogger(__name__)
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realtime = Blueprint('realtime', __name__)
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@realtime.route("/user/")
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@require_session_login
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def index():
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debug_template = """
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<html>
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<head>
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</head>
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<body>
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<h1>Server sent events</h1>
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<div id="event"></div>
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<script type="text/javascript">
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var eventOutputContainer = document.getElementById("event");
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var evtSrc = new EventSource("/realtime/user/subscribe?events=docker-cli");
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evtSrc.onmessage = function(e) {
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console.log(e.data);
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eventOutputContainer.innerHTML = e.data;
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};
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</script>
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</body>
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</html>
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"""
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return(debug_template)
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@realtime.route("/user/test")
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@require_session_login
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def user_test():
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evt = userevents.get_event(current_user.db_user().username)
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evt.publish_event_data('test', {'foo': 2})
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return 'OK'
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@realtime.route("/user/subscribe")
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@require_session_login
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def user_subscribe():
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def wrapper(listener):
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logger.debug('Beginning streaming of user events')
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try:
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yield 'data: %s\n\n' % json.dumps({})
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for event_id, data in listener.event_stream():
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message = {'event': event_id, 'data': data}
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json_string = json.dumps(message)
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yield 'data: %s\n\n' % json_string
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finally:
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logger.debug('Closing listener due to exception')
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listener.stop()
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events = request.args.get('events', '').split(',')
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if not events:
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abort(404)
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try:
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listener = userevents.get_listener(current_user.db_user().username, events)
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except CannotReadUserEventsException:
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abort(504)
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def on_close():
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logger.debug('Closing listener due to response close')
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listener.stop()
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r = Response(wrapper(listener), mimetype="text/event-stream")
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r.call_on_close(on_close)
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return r
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