mirror of
https://github.com/solero/houdini.git
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419 lines
13 KiB
Python
419 lines
13 KiB
Python
from abc import ABC
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from abc import abstractmethod
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import asyncio
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import itertools
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import inspect
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import collections
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from houdini.cooldown import CooldownError
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from houdini.data.room import Room
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from houdini.data.item import Item
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from houdini.data.igloo import Igloo, Furniture, Flooring, Location
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from houdini.data.stamp import Stamp
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class ChecklistError(Exception):
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"""Raised when a checklist fails"""
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class _ArgumentDeserializer:
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__slots__ = ['name', 'components', 'callback', 'parent', 'pass_raw', 'cooldown',
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'checklist', 'instance', 'alias', 'rest_raw', 'string_delimiter',
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'string_separator', '_signature', '_arguments', '_exception_callback',
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'_exception_class']
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def __init__(self, name, callback, **kwargs):
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self.callback = callback
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self.name = callback.__name__ if name is None else name
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self.cooldown = kwargs.get('cooldown')
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self.checklist = kwargs.get('checklist', [])
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self.rest_raw = kwargs.get('rest_raw', False)
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self.string_delimiter = kwargs.get('string_delimiter', [])
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self.string_separator = kwargs.get('string_separator', str())
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self.instance = None
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self._signature = list(inspect.signature(self.callback).parameters.values())
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self._arguments = inspect.getfullargspec(self.callback)
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self._exception_callback = None
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self._exception_class = Exception
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if self.rest_raw:
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self._signature = self._signature[:-1]
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def _can_run(self, p):
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return True if not self.checklist else all(predicate(self, p) for predicate in self.checklist)
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async def _check_cooldown(self, p):
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if self.cooldown is not None:
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bucket = self.cooldown.get_bucket(p)
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if bucket.is_cooling:
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if self.cooldown.callback is not None:
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if self.instance:
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await self.cooldown.callback(self.instance, p)
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else:
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await self.cooldown.callback(p)
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else:
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raise CooldownError('{} invoked listener during cooldown'.format(p))
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def _check_list(self, p):
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if not self._can_run(p):
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raise ChecklistError('Could not invoke listener due to checklist failure')
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def _consume_separated_string(self, ctx):
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if ctx.argument[0] in self.string_delimiter:
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while not ctx.argument.endswith(ctx.argument[0]):
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ctx.argument += self.string_separator + next(ctx.arguments)
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ctx.argument = ctx.argument[1:-1]
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def error(self, exception_class=Exception):
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def decorator(exception_callback):
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self._exception_callback = exception_callback
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self._exception_class = exception_class
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return decorator
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async def _deserialize(self, p, data):
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handler_call_arguments = [self.instance, p] if self.instance is not None else [p]
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handler_call_keywords = {}
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arguments = itertools.islice(data, len(data) - len(self._arguments.kwonlyargs))
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keyword_arguments = itertools.islice(data, len(data) - len(self._arguments.kwonlyargs), len(data))
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ctx = _ConverterContext(None, arguments, None, p)
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for ctx.component in itertools.islice(self._signature, len(handler_call_arguments), len(self._signature)):
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if ctx.component.annotation is ctx.component.empty and ctx.component.default is not ctx.component.empty:
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handler_call_arguments.append(ctx.component.default)
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elif ctx.component.kind == ctx.component.POSITIONAL_OR_KEYWORD:
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ctx.argument = next(ctx.arguments)
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converter = get_converter(ctx.component)
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if converter == str:
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self._consume_separated_string(ctx)
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handler_call_arguments.append(await do_conversion(converter, ctx))
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elif ctx.component.kind == ctx.component.VAR_POSITIONAL:
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for argument in ctx.arguments:
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ctx.argument = argument
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converter = get_converter(ctx.component)
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if converter == str:
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self._consume_separated_string(ctx)
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handler_call_arguments.append(await do_conversion(converter, ctx))
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elif ctx.component.kind == ctx.component.KEYWORD_ONLY:
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ctx.arguments = keyword_arguments
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ctx.argument = next(keyword_arguments)
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converter = get_converter(ctx.component)
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if converter == str:
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self._consume_separated_string(ctx)
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handler_call_keywords[ctx.component.name] = await do_conversion(converter, ctx)
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if self.rest_raw:
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handler_call_arguments.append(list(ctx.arguments))
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return handler_call_arguments, handler_call_keywords
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async def __call__(self, p, data):
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try:
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handler_call_arguments, handler_call_keywords = await self._deserialize(p, data)
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return await self.callback(*handler_call_arguments, **handler_call_keywords)
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except Exception as e:
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if self._exception_callback and isinstance(e, self._exception_class):
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if self.instance:
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await self._exception_callback(self.instance, e)
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else:
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await self._exception_callback(e)
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else:
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raise e
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def __hash__(self):
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return hash(self.__name__())
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def __name__(self):
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return "{}.{}".format(self.callback.__module__, self.callback.__name__)
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def _listener(cls, name, **kwargs):
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def decorator(callback):
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if not asyncio.iscoroutinefunction(callback):
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raise TypeError('All listeners must be a coroutine.')
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try:
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cooldown_object = callback.__cooldown
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del callback.__cooldown
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except AttributeError:
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cooldown_object = None
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try:
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checklist = callback.__checks
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del callback.__checks
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except AttributeError:
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checklist = []
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listener_object = cls(name, callback, cooldown=cooldown_object, checklist=checklist, **kwargs)
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return listener_object
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return decorator
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class IConverter(ABC):
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@property
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@abstractmethod
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def description(self):
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"""A short description of the purpose of the converter"""
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@abstractmethod
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async def convert(self, ctx):
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"""The actual converter implementation"""
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Credentials = collections.namedtuple('Credentials', ('username', 'password'))
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WorldCredentials = collections.namedtuple('Credentials', [
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'id',
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'username',
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'login_key',
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'language_approved', 'language_rejected',
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'client_key',
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'confirmation_hash'
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])
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class CredentialsConverter(IConverter):
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description = """Used for obtaining login credentials from XML login data"""
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async def convert(self, ctx):
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username = ctx.argument[0][0].text
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password = ctx.argument[0][1].text
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return Credentials(username.lower(), password)
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class WorldCredentialsConverter(IConverter):
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description = """Used for obtaining login credentials on the world server"""
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async def convert(self, ctx):
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raw_login_data = ctx.argument[0][0].text
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password_hashes = ctx.argument[0][1].text
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penguin_id, _, username, login_key, language_approved, language_rejected = raw_login_data.split('|')
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client_key, confirmation_hash = password_hashes.split('#')
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return WorldCredentials(int(penguin_id), username.lower(), login_key, int(language_approved), int(language_rejected),
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client_key, confirmation_hash)
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class VersionChkConverter(IConverter):
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description = """Used for checking the verChk version number"""
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async def convert(self, ctx):
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return int(ctx.argument[0].get('v'))
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class ConnectedPenguinConverter(IConverter):
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description = """Converts a penguin ID into a live penguin instance
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or none if the player is offline"""
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async def convert(self, ctx):
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penguin_id = int(ctx.argument)
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if penguin_id in ctx.p.server.penguins_by_id:
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return ctx.p.server.penguins_by_id[penguin_id]
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return None
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class ConnectedIglooConverter(IConverter):
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description = """Converts a penguin ID into a live igloo instance or
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none if it's not available"""
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async def convert(self, ctx):
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igloo_id = int(ctx.argument)
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if igloo_id in ctx.p.server.igloo_map:
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return ctx.p.server.igloo_map[igloo_id]
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return None
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class RoomConverter(IConverter):
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description = """Converts a room ID into a houdini.data.Room instance"""
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async def convert(self, ctx):
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room_id = int(ctx.argument)
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if room_id in ctx.p.server.rooms:
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return await ctx.p.server.rooms.get(room_id)
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return None
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class ItemConverter(IConverter):
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description = """Converts an item ID into a houdini.data.Item instance"""
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async def convert(self, ctx):
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item_id = int(ctx.argument)
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if item_id in ctx.p.server.items:
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return await ctx.p.server.items.get(item_id)
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return None
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class IglooConverter(IConverter):
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description = """Converts an igloo ID into a houdini.data.Igloo instance"""
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async def convert(self, ctx):
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igloo_id = int(ctx.argument)
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if igloo_id in ctx.p.server.igloos:
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return await ctx.p.server.igloos.get(igloo_id)
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return None
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class FurnitureConverter(IConverter):
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description = """Converts a furniture ID into a houdini.data.Furniture instance"""
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async def convert(self, ctx):
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furniture_id = int(ctx.argument)
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if furniture_id in ctx.p.server.furniture:
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return await ctx.p.server.furniture.get(furniture_id)
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return None
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class FlooringConverter(IConverter):
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description = """Converts a flooring ID into a houdini.data.Flooring instance"""
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async def convert(self, ctx):
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flooring_id = int(ctx.argument)
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if flooring_id in ctx.p.server.flooring:
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return await ctx.p.server.flooring.get(flooring_id)
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return None
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class StampConverter(IConverter):
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description = """Converts a stamp ID into a houdini.data.Stamp instance"""
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async def convert(self, ctx):
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stamp_id = int(ctx.argument)
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if stamp_id in ctx.p.server.stamps:
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return await ctx.p.server.stamps.get(stamp_id)
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return None
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class SeparatorConverter(IConverter):
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__slots__ = ['separator', 'mapper']
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description = """Converts strings separated by char into a list of type"""
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def __init__(self, separator='|', mapper=int):
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self.separator = separator
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self.mapper = mapper
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async def convert(self, ctx):
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return map(self.mapper, ctx.argument.split(self.separator))
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class UnionConverter(IConverter):
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__slots__ = ['types']
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description = """Converts union type into argument"""
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def __init__(self, *types, skip_none=False):
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self.types = types
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self.skip_none = skip_none
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async def convert(self, ctx):
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for converter in self.types:
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try:
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result = await do_conversion(converter, ctx)
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if not self.skip_none or result is not None:
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return result
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except ValueError:
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continue
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class GreedyConverter(IConverter):
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__slots__ = ['target']
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description = """Converts until it can't any longer"""
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def __init__(self, target=int):
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self.target = target
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async def convert(self, ctx):
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converted = []
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try:
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converted.append(await do_conversion(self.target, ctx))
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for ctx.argument in ctx.arguments:
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converted.append(await do_conversion(self.target, ctx))
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except ValueError:
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return converted
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return converted
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class OptionalConverter(IConverter):
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__slots__ = ['target']
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description = """Tries to convert but ignores if it can't"""
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def __init__(self, target=int):
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self.target = target
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async def convert(self, ctx):
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try:
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return await do_conversion(self.target, ctx)
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except ValueError:
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return ctx.component.default
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class _ConverterContext:
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__slots__ = ['component', 'arguments', 'argument', 'p']
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def __init__(self, component, arguments, argument, p):
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self.component = component
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self.arguments = arguments
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self.argument = argument
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self.p = p
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ConverterTypes = {
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Credentials: CredentialsConverter,
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WorldCredentials: WorldCredentialsConverter,
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Room: RoomConverter,
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Item: ItemConverter,
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Furniture: FurnitureConverter,
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Igloo: IglooConverter,
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Flooring: FlooringConverter,
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Stamp: StampConverter
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}
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def get_converter(component):
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if component.annotation in ConverterTypes:
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return ConverterTypes[component.annotation]
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if component.annotation is component.empty:
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return str
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return component.annotation
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async def do_conversion(converter, ctx):
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if issubclass(converter, IConverter) and not isinstance(converter, IConverter):
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converter = converter()
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if isinstance(converter, IConverter):
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if asyncio.iscoroutinefunction(converter.convert):
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return await converter.convert(ctx)
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return converter.convert(ctx)
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return converter(ctx.argument)
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