202 lines
7.2 KiB
Python
202 lines
7.2 KiB
Python
#--depends-on config
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#--depends-on shorturl
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import difflib, hashlib, time
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from src import ModuleManager, utils
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import feedparser
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RSS_INTERVAL = 60 # 1 minute
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@utils.export("botset", utils.IntSetting("rss-interval",
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"Interval (in seconds) between RSS polls", example="120"))
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@utils.export("channelset", utils.BoolSetting("rss-shorten",
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"Whether or not to shorten RSS urls"))
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class Module(ModuleManager.BaseModule):
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_name = "RSS"
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def on_load(self):
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self.timers.add("rss-feeds", self._timer,
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self.bot.get_setting("rss-interval", RSS_INTERVAL))
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def _format_entry(self, server, feed_title, entry, shorten):
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title = utils.parse.line_normalise(utils.http.strip_html(
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entry["title"]))
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author = entry.get("author", None)
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author = " by %s" % author if author else ""
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link = entry.get("link", None)
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if shorten:
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try:
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link = self.exports.get_one("shorturl")(server, link)
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except:
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pass
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link = " - %s" % link if link else ""
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feed_title_str = "%s: " % feed_title if feed_title else ""
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return "%s%s%s%s" % (feed_title_str, title, author, link)
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def _timer(self, timer):
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start_time = time.monotonic()
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self.log.trace("Polling RSS feeds")
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timer.redo()
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hook_settings = self.bot.database.channel_settings.find_by_setting(
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"rss-hooks")
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hooks = {}
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for server_id, channel_name, urls in hook_settings:
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server = self.bot.get_server_by_id(server_id)
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if server and channel_name in server.channels:
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channel = server.channels.get(channel_name)
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for url in urls:
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if not url in hooks:
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hooks[url] = []
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hooks[url].append((server, channel))
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if not hooks:
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return
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requests = []
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for url in hooks.keys():
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requests.append(utils.http.Request(url, id=url))
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pages = utils.http.request_many(requests)
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for url, channels in hooks.items():
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if not url in pages:
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# async url get failed
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continue
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try:
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data = pages[url].decode()
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except Exception as e:
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self.log.error("Failed to decode rss URL %s", [url],
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exc_info=True)
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continue
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feed = feedparser.parse(data)
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feed_title = feed["feed"].get("title", None)
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max_ids = len(feed["entries"])*10
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for server, channel in channels:
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seen_ids = channel.get_setting("rss-seen-ids-%s" % url, [])
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valid = 0
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for entry in feed["entries"][::-1]:
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entry_id, entry_id_hash = self._get_id(entry)
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if entry_id_hash in seen_ids or entry_id in seen_ids:
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continue
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if valid == 3:
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continue
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valid += 1
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shorten = channel.get_setting("rss-shorten", False)
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output = self._format_entry(server, feed_title, entry,
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shorten)
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self.events.on("send.stdout").call(target=channel,
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module_name="RSS", server=server, message=output)
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seen_ids.append(entry_id_hash)
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if len(seen_ids) > max_ids:
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seen_ids = seen_ids[len(seen_ids)-max_ids:]
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channel.set_setting("rss-seen-ids-%s" % url, seen_ids)
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total_milliseconds = (time.monotonic() - start_time) * 1000
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self.log.trace("Polled RSS feeds in %fms", [total_milliseconds])
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def _get_id(self, entry):
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entry_id = entry.get("id", entry["link"])
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entry_id_hash = hashlib.sha1(entry_id.encode("utf8")).hexdigest()
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return entry_id, "sha1:%s" % entry_id_hash
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def _get_entries(self, url, max: int=None):
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try:
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feed = feedparser.parse(utils.http.request(url).data)
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except Exception as e:
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self.log.warn("failed to parse RSS %s", [url], exc_info=True)
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feed = None
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if not feed or not feed["feed"]:
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return None, None
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entry_ids = []
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for entry in feed["entries"]:
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entry_ids.append(entry.get("id", entry["link"]))
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return feed["feed"].get("title", None), feed["entries"][:max]
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@utils.hook("received.command.rss", min_args=1, channel_only=True)
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def rss(self, event):
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"""
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:help: Modify RSS/Atom configuration for the current channel
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:usage: list
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:usage: add <url>
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:usage: remove <url>
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:permission: rss
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"""
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changed = False
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message = None
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rss_hooks = event["target"].get_setting("rss-hooks", [])
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subcommand = event["args_split"][0].lower()
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if subcommand == "list":
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event["stdout"].write("RSS hooks: %s" % ", ".join(rss_hooks))
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elif subcommand == "add":
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if not len(event["args_split"]) > 1:
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raise utils.EventError("Please provide a URL")
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url = utils.http.url_sanitise(event["args_split"][1])
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if url in rss_hooks:
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raise utils.EventError("That URL is already being watched")
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title, entries = self._get_entries(url)
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if entries == None:
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raise utils.EventError("Failed to read feed")
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seen_ids = [self._get_id(e)[1] for e in entries]
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event["target"].set_setting("rss-seen-ids-%s" % url, seen_ids)
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rss_hooks.append(url)
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changed = True
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message = "Added RSS feed"
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elif subcommand == "remove":
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if not len(event["args_split"]) > 1:
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raise utils.EventError("Please provide a URL")
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url = utils.http.url_sanitise(event["args_split"][1])
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if not url in rss_hooks:
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matches = difflib.get_close_matches(url, rss_hooks, cutoff=0.5)
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if matches:
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raise utils.EventError("Did you mean %s ?" % matches[0])
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else:
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raise utils.EventError("I'm not watching that URL")
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rss_hooks.remove(url)
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changed = True
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message = "Removed RSS feed"
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elif subcommand == "read":
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url = None
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if not len(event["args_split"]) > 1:
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if len(rss_hooks) == 1:
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url = rss_hooks[0]
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else:
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raise utils.EventError("Please provide a url")
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else:
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url = event["args_split"][1]
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title, entries = self._get_entries(url)
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if not entries:
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raise utils.EventError("Failed to get RSS entries")
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shorten = event["target"].get_setting("rss-shorten", False)
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out = self._format_entry(event["server"], title, entries[0],
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shorten)
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event["stdout"].write(out)
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else:
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raise utils.EventError("Unknown subcommand '%s'" % subcommand)
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if changed:
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if rss_hooks:
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event["target"].set_setting("rss-hooks", rss_hooks)
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else:
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event["target"].del_setting("rss-hooks")
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event["stdout"].write(message)
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