[#288] Removed legacy http.poll backend.

Closes: #288

docs/source/backends.rst

@@ -21,7 +21,6 @@ Backends
     platypush/backend/google.pubsub.rst
     platypush/backend/gps.rst
     platypush/backend/http.rst
-    platypush/backend/http.poll.rst
     platypush/backend/inotify.rst
     platypush/backend/joystick.rst
     platypush/backend/joystick.jstest.rst

docs/source/platypush/backend/http.poll.rst

@@ -1,6 +0,0 @@
-``http.poll``
-===============================
-
-.. automodule:: platypush.backend.http.poll
-    :members:
-

platypush/backend/http/poll/__init__.py

@@ -1,88 +0,0 @@
-import importlib
-import time
-
-from platypush.backend import Backend
-from platypush.backend.http.request import HttpRequest
-
-
-class HttpPollBackend(Backend):
-    """
-    WARNING: This integration is deprecated, since it was practically only used for RSS subscriptions.
-    RSS feeds integration has been replaced by :class:`platypush.plugins.rss.RSSPlugin`.
-
-    This backend will poll multiple HTTP endpoints/services and return events
-    the bus whenever something new happened. Supported types:
-    :class:`platypush.backend.http.request.JsonHttpRequest` (for polling updates on
-    a JSON endpoint), :class:`platypush.backend.http.request.rss.RssUpdates`
-    (for polling updates on an RSS feed). Example configuration::
-
-        backend.http.poll:
-            requests:
-                -
-                    # Poll for updates on a JSON endpoint
-                    method: GET
-                    type: platypush.backend.http.request.JsonHttpRequest
-                    args:
-                        url: https://host.com/api/v1/endpoint
-                        headers:
-                            Token: TOKEN
-                        params:
-                            updatedSince: 1m
-                        timeout: 5  # Times out after 5 seconds (default)
-                    poll_seconds: 60  # Check for updates on this endpoint every 60 seconds (default)
-                    path: ${response['items']}  # Path in the JSON to check for new items.
-                                                # Python expressions are supported.
-                                                # Note that 'response' identifies the JSON root.
-                                                # Default value: JSON root.
-                -
-                    # Poll for updates on an RSS feed
-                    type: platypush.backend.http.request.rss.RssUpdates
-                    url: https://www.theguardian.com/rss/world
-                    title: The Guardian - World News
-                    poll_seconds: 120
-                    max_entries: 10
-
-    Triggers: an update event for the relevant HTTP source if it contains new items. For example:
-
-        * :class:`platypush.message.event.http.rss.NewFeedEvent` if a feed contains new items
-        * :class:`platypush.message.event.http.HttpEvent` if a JSON endpoint contains new items
-    """
-
-    def __init__(self, requests, *args, **kwargs):
-        """
-        :param requests: Configuration of the requests to make (see class description for examples)
-        :type requests: dict
-        """
-
-        super().__init__(*args, **kwargs)
-        self.requests = []
-
-        for request in requests:
-            if isinstance(request, dict):
-                req_type = request['type']
-                (module, name) = ('.'.join(req_type.split('.')[:-1]), req_type.split('.')[-1])
-                module = importlib.import_module(module)
-                request = getattr(module, name)(**request)
-            elif not isinstance(request, HttpRequest):
-                raise RuntimeError('Request should either be a dict or a ' +
-                                   'HttpRequest object, {} found'.format(type(request)))
-
-            request.bus = self.bus
-            self.requests.append(request)
-
-    def run(self):
-        super().run()
-
-        while not self.should_stop():
-            for request in self.requests:
-                if time.time() - request.last_request_timestamp > request.poll_seconds:
-                    try:
-                        request.execute()
-                    except Exception as e:
-                        self.logger.error('Error while executing request: {}'.format(request))
-                        self.logger.exception(e)
-
-            time.sleep(0.1)  # Prevent a tight loop
-
-
-# vim:sw=4:ts=4:et:

platypush/backend/http/poll/manifest.yaml

@@ -1,6 +0,0 @@
-manifest:
-  events: {}
-  install:
-    pip: []
-  package: platypush.backend.http.poll
-  type: backend