Backuping work, added statistics class and redis content

src/bot.py

@@ -9,6 +9,8 @@ from collections import defaultdict, namedtuple
 from typing import Generator
 
 from contextlib import asynccontextmanager
+
+from redis_connector import redis
 from src.argparser import command_line_args
 from src.config import settings
 from src.database import db
@@ -33,7 +35,7 @@ if command_line_args.debug:
 
 # Log Fail states with structure wiki_url: number of fail states
 all_wikis: dict = {}
-mw_msgs: dict = {}  # will have the type of id: tuple
+
 main_tasks: dict = {}
 
 
@@ -50,15 +52,6 @@ async def populate_wikis():
 queue_limit = settings.get("queue_limit", 30)
 QueuedWiki = namedtuple("QueuedWiki", ['url', 'amount'])
 
-class LimitedList(list):
-    def __init__(self, *args):
-        list.__init__(self, *args)
-
-    def append(self, obj: QueuedWiki, forced: bool = False) -> None:
-        if len(self) < queue_limit or forced:
-            self.insert(len(self), obj)
-            return
-        raise ListFull
 
 
 
@@ -550,11 +543,16 @@ def shutdown(loop, signal=None):
 
 async def main_loop():
     global main_tasks
+    # Fix some asyncio problems
     loop = asyncio.get_event_loop()
     nest_asyncio.apply(loop)
+    # Setup database connection
     await db.setup_connection()
     logger.debug("Connection type: {}".format(db.connection))
     await populate_wikis()
+    await redis.connect()
+    await redis.pubsub()
+    domains.run_all_domains()
     try:
         signals = (signal.SIGHUP, signal.SIGTERM, signal.SIGINT)
         for s in signals:

src/domain.py

@@ -35,8 +35,15 @@ class Domain:
     def set_irc(self, irc_client: src.irc_feed.AioIRCCat):
         self.irc = irc_client
 
+    def stop_task(self):
+        """Cancells the task"""
+        self.task.cancel()  # Be aware that cancelling the task may take time
+
     def run_domain(self):
-        self.task = asyncio.create_task(self.run_wiki_check())
+        if not self.task or self.task.cancelled():
+            self.task = asyncio.create_task(self.run_wiki_check())
+        else:
+            logger.error(f"Tried to start a task for domain {self.name} however the task already exists!")
 
     def add_wiki(self, wiki: src.wiki.Wiki, first=False):
         """Adds a wiki to domain list.
@@ -54,7 +61,7 @@ class Domain:
         self.rate_limiter.timeout_add(1.0)
 
     async def irc_scheduler(self):
-        while 1:
+        while True:
             try:
                 wiki_url = self.irc.updated_wikis.pop()
             except KeyError:
@@ -72,14 +79,15 @@ class Domain:
                 return  # Recently scanned wikis will get at the end of the self.wikis, so we assume what is first hasn't been checked for a while
 
     async def regular_scheduler(self):
-        while 1:
-            additional_time = max((-25*len(self))+150, 0)
-
+        while True:
+            await asyncio.sleep(max((-25*len(self))+150, 1))  # To make sure that we don't spam domains with one wiki every second we calculate a sane timeout for domains with few wikis
+            await self.run_wiki_scan(self.wikis.pop())
 
 
     async def run_wiki_check(self):
         if self.irc:
-            while:
+            while True:
                 await self.irc_scheduler()
+                await asyncio.sleep(10.0)
         else:
             await self.regular_scheduler()

src/domain_manager.py

@@ -39,5 +39,8 @@ class DomainManager:
         self.domains[name] = domain_object
         return self.domains[name]
 
+    async def run_all_domains(self):
+        for domain in self.domains.values():
+            domain.run_domain()
 
 domains = DomainManager()

src/exceptions.py

@@ -23,4 +23,31 @@ class ListFull(Exception):
 	pass
 
 class EmbedListFull(Exception):
-	pass
+	pass
+
+class ServerError(Exception):
+	"""Exception for when a request fails because of Server error"""
+	pass
+
+
+class ClientError(Exception):
+	"""Exception for when a request failes because of Client error"""
+
+	def __init__(self, request):
+		self.message = f"Client have made wrong request! {request.status_code}: {request.reason}. {request.text}"
+		super().__init__(self.message)
+
+
+class BadRequest(Exception):
+	"""When type of parameter given to request making method is invalid"""
+	def __init__(self, object_type):
+		self.message = f"params must be either a strong or OrderedDict object, not {type(object_type)}!"
+		super().__init__(self.message)
+
+
+class MediaWikiError(Exception):
+	"""When MediaWiki responds with an error"""
+	def __init__(self, errors):
+		self.message = f"MediaWiki returned the following errors: {errors}!"
+		super().__init__(self.message)
+

src/redis_connector.py

@@ -1,14 +1,36 @@
 import asyncio
 import aioredis
+import async_timeout
+import logging
+from typing import Optional
 from src.config import settings
 
+logger = logging.getLogger("rcgcdb.redisconnector")
 
 class Redis:
     def __init__(self):
-        self.connection = None
+        self.pub_connection: Optional[aioredis.connection] = None
+        self.stat_connection: Optional[aioredis.connection] = None
+
+    async def reader(self):
+        """Based on code from https://aioredis.readthedocs.io/en/latest/getting-started/#pubsub-mode"""
+        while True:
+            try:
+                async with async_timeout.timeout(1):
+                    message = await self.pub_connection.get_message(ignore_subscribe_messages=True)
+                    if message is not None:
+                        logger.debug(f"(Reader) Message Received: {message}")
+                    await asyncio.sleep(1.0)
+            except asyncio.TimeoutError:  # TODO Better handler
+                pass
 
     async def connect(self):
-        self.connection = await aioredis.create_pool("redis://" + settings["redis_host"], encoding="UTF-8")
+        self.pub_connection = await aioredis.create_connection("redis://" + settings["redis_host"], encoding="UTF-8")
+        self.stat_connection = await aioredis.create_connection("redis://" + settings["redis_host"], encoding="UTF-8")
+
+    async def pubsub(self):
+        await self.pub_connection.subscribe("rcgcdb_updates")
+        asyncio.create_task(self.reader())
 
 
 redis = Redis()

src/statistics.py

@@ -0,0 +1,32 @@
+from src.config import settings
+from typing import Union, Optional
+
+queue_limit = settings.get("queue_limit", 30)
+
+class Log:
+    def __init__(self, **kwargs):
+
+
+
+class LimitedList(list):
+    def __init__(self, *args):
+        list.__init__(self, *args)
+
+    def append(self, obj: Log) -> None:
+        if len(self) > queue_limit:
+            self.pop()
+
+
+class Statistics:
+    def __init__(self, rc_id: int, discussion_id: int):
+        self.last_checked_rc: Optional[int] = None
+        self.last_action: Optional[int] = rc_id
+        self.last_checked_discussion: Optional[int] = None
+        self.last_post: Optional[int] = discussion_id
+        self.logs: LimitedList = LimitedList()
+
+    def update(self, *args: Log, **kwargs: dict[str, Union[float, int]]):
+        for key, value in kwargs:
+            self.__setattr__(key, value)
+        for log in args:
+            self.logs.append(log)

src/wiki.py

@@ -8,24 +8,142 @@ from src.formatters.discussions import feeds_embed_formatter, feeds_compact_form
 from src.misc import parse_link
 from src.i18n import langs
 from src.wiki_ratelimiter import RateLimiter
+from statistics import Statistics
 import sqlite3
 import src.discord
 import asyncio
 from src.config import settings
 # noinspection PyPackageRequirements
 from bs4 import BeautifulSoup
+from collections import OrderedDict
+from typing import Union
 
 logger = logging.getLogger("rcgcdb.wiki")
 
 class Wiki:
 	def __init__(self, script_url: str, rc_id: int, discussion_id: int):
-		self.script_url = script_url
+		self.script_url: str = script_url
 		self.session = aiohttp.ClientSession(headers=settings["header"], timeout=aiohttp.ClientTimeout(6.0))
-		self.statistics = Statistics()
+		self.statistics: Statistics = Statistics(rc_id, discussion_id)
+		self.fail_times: int = 0
+		self.mw_messages: MWMessagesHashmap = MWMessagesHashmap()
 
 	@property
 	def rc_id(self):
-		return self.statistics.rc_id
+		return self.statistics.last_action
+
+	def downtime_controller(self, down):
+		if down:
+			self.fail_times += 1
+		else:
+			self.fail_times -= 1
+
+	def parse_mw_request_info(self, request_data: dict, url: str):
+		"""A function parsing request JSON message from MediaWiki logging all warnings and raising on MediaWiki errors"""
+		# any([True for k in request_data.keys() if k in ("error", "errors")])
+		errors: list = request_data.get("errors", {})  # Is it ugly? I don't know tbh
+		if errors:
+			raise MediaWikiError(str(errors))
+		warnings: list = request_data.get("warnings", {})
+		if warnings:
+			for warning in warnings:
+				logger.warning("MediaWiki returned the following warning: {code} - {text} on {url}.".format(
+					code=warning["code"], text=warning.get("text", warning.get("*", "")), url=url
+				))
+		return request_data
+
+	async def api_request(self, params: Union[str, OrderedDict], *json_path: str, timeout: int = 10,
+					allow_redirects: bool = False) -> dict:
+		"""Method to GET request data from the wiki's API with error handling including recognition of MediaWiki errors.
+
+		Parameters:
+
+			params (str, OrderedDict): a string or collections.OrderedDict object containing query parameters
+			json_path (str): *args taking strings as values. After request is parsed as json it will extract data from given json path
+			timeout (int, float) (default=10): int or float limiting time required for receiving a full response from a server before returning TimeoutError
+			allow_redirects (bool) (default=False): switches whether the request should follow redirects or not
+
+		Returns:
+
+			request_content (dict): a dict resulting from json extraction of HTTP GET request with given json_path
+			OR
+			One of the following exceptions:
+			ServerError: When connection with the wiki failed due to server error
+			ClientError: When connection with the wiki failed due to client error
+			KeyError: When json_path contained keys that weren't found in response JSON response
+			BadRequest: When params argument is of wrong type
+			MediaWikiError: When MediaWiki returns an error
+		"""
+		# Making request
+		try:
+			if isinstance(params,
+						  str):  # Todo Make it so there are some default arguments like warning/error format appended
+				request = await self.session.get(self.script_url + "api.php?" + params + "&errorformat=raw", timeout=timeout,
+										   allow_redirects=allow_redirects)
+			elif isinstance(params, OrderedDict):
+				params["errorformat"] = "raw"
+				request = await self.session.get(self.script_url + "api.php", params=params, timeout=timeout,
+										   allow_redirects=allow_redirects)
+			else:
+				raise BadRequest(params)
+		except (aiohttp.ServerConnectionError, aiohttp.ServerTimeoutError) as exc:
+			logger.warning("Reached {error} error for request on link {url}".format(error=repr(exc),
+																					url=self.script_url + str(params)))
+			self.downtime_controller(True)
+			raise ServerError
+		# Catching HTTP errors
+		if 499 < request.status < 600:
+			self.downtime_controller(True)
+			raise ServerError
+		elif request.status == 302:
+			logger.critical(
+				"Redirect detected! Either the wiki given in the script settings (wiki field) is incorrect/the wiki got removed or is giving us the false value. Please provide the real URL to the wiki, current URL redirects to {}".format(
+					request.url))
+		elif 399 < request.status < 500:
+			logger.error("Request returned ClientError status code on {url}".format(url=request.url))
+			raise ClientError(request)
+		else:
+			# JSON Extraction
+			try:
+				request_json = self.parse_mw_request_info(await request.json(encoding="UTF-8"), str(request.url))
+				for item in json_path:
+					request_json = request_json[item]
+			except ValueError:
+				logger.warning("ValueError when extracting JSON data on {url}".format(url=request.url))
+				self.downtime_controller(True)
+				raise ServerError
+			except MediaWikiError:
+				logger.exception("MediaWiki error on request: {}".format(request.url))
+				raise
+			except KeyError:
+				logger.exception("KeyError while iterating over json_path, full response: {}".format(request.json()))
+				raise
+		return request_json
+
+	async def fetch_wiki(self, extended, script_path, session: aiohttp.ClientSession, ratelimiter: RateLimiter,
+						 amount=20) -> aiohttp.ClientResponse:
+		await ratelimiter.timeout_wait()
+		if extended:
+			params = OrderedDict({"action": "query", "format": "json", "uselang": "content", "list": "tags|recentchanges",
+					  "meta": "allmessages|siteinfo",
+					  "utf8": 1, "tglimit": "max", "tgprop": "displayname",
+					  "rcprop": "title|redirect|timestamp|ids|loginfo|parsedcomment|sizes|flags|tags|user",
+					  "rclimit": amount, "rcshow": "!bot", "rctype": "edit|new|log|categorize",
+					  "ammessages": "recentchanges-page-added-to-category|recentchanges-page-removed-from-category|recentchanges-page-added-to-category-bundled|recentchanges-page-removed-from-category-bundled",
+					  "amenableparser": 1, "amincludelocal": 1, "siprop": "namespaces|general"})
+		else:
+			params = OrderedDict({"action": "query", "format": "json", "uselang": "content", "list": "tags|recentchanges",
+					  "meta": "siteinfo", "utf8": 1,
+					  "tglimit": "max", "rcshow": "!bot", "tgprop": "displayname",
+					  "rcprop": "title|redirect|timestamp|ids|loginfo|parsedcomment|sizes|flags|tags|user",
+					  "rclimit": amount, "rctype": "edit|new|log|categorize", "siprop": "namespaces|general"})
+		try:
+			response = await self.api_request(params=params)
+			ratelimiter.timeout_add(1.0)
+		except (aiohttp.ClientConnectionError, aiohttp.ServerTimeoutError, asyncio.TimeoutError):
+			logger.error("A connection error occurred while requesting {}".format(params))
+			raise WikiServerError
+		return response
 
 @dataclass
 class Wiki_old:

src/wiki_ratelimiter.py

@@ -17,3 +17,6 @@ class RateLimiter:
 		#logger.debug("Waiting {}".format(calculated_timeout))
 		if calculated_timeout > 0:
 			await asyncio.sleep(calculated_timeout)
+
+	def timeout_raw(self):
+		return self.timeout_until - time.time()