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Merge pull request #43 from SamWarden/dev
Publish Didiator v0.2.0
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,19 +1,30 @@ | ||
from .dispatchers import CommandDispatcherImpl, QueryDispatcherImpl | ||
from .interface.entities import Command, Query | ||
from .interface import CommandDispatcher, EventHandler, EventObserver, QueryDispatcher | ||
from .observers import EventObserverImpl | ||
from .interface.entities import Command, Query, Event | ||
from .interface.handlers import CommandHandler, QueryHandler | ||
from .interface.mediator import Mediator | ||
from .interface.mediator import Mediator, CommandMediator, QueryMediator, EventMediator | ||
from .mediator import MediatorImpl | ||
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||
__version__ = "0.1.1" | ||
__version__ = "0.2.0" | ||
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__all__ = ( | ||
"__version__", | ||
"MediatorImpl", | ||
"Mediator", | ||
"CommandMediator", | ||
"QueryMediator", | ||
"EventMediator", | ||
"Command", | ||
"CommandHandler", | ||
"CommandDispatcher", | ||
"CommandDispatcherImpl", | ||
"Query", | ||
"QueryHandler", | ||
"QueryDispatcher", | ||
"QueryDispatcherImpl", | ||
"Event", | ||
"EventHandler", | ||
"EventObserver", | ||
"EventObserverImpl", | ||
) |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,9 +1,9 @@ | ||
from .command import CommandDispatcherImpl | ||
from .request import RequestDispatcherImpl | ||
from .request import DispatcherImpl | ||
from .query import QueryDispatcherImpl | ||
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__all__ = ( | ||
"CommandDispatcherImpl", | ||
"RequestDispatcherImpl", | ||
"DispatcherImpl", | ||
"QueryDispatcherImpl", | ||
) |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,52 +1,51 @@ | ||
import abc | ||
import functools | ||
from typing import Any, Awaitable, Callable, Sequence, Type, TypeVar | ||
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from didiator.interface.entities.request import Request | ||
from didiator.interface.exceptions import HandlerNotFound | ||
from didiator.interface.handlers import HandlerType | ||
from didiator.middlewares.base import Middleware | ||
from didiator.interface.dispatchers.request import Dispatcher, MiddlewareType | ||
from didiator.middlewares.base import Middleware, MiddlewareType, wrap_middleware | ||
from didiator.interface.dispatchers.request import Dispatcher | ||
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RRes = TypeVar("RRes") | ||
R = TypeVar("R", bound=Request[Any]) | ||
Middlewares = Sequence[MiddlewareType[Request[Any], Any]] | ||
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DEFAULT_MIDDLEWARES: tuple[MiddlewareType, ...] = (Middleware(),) | ||
DEFAULT_MIDDLEWARES: tuple[MiddlewareType[Request[Any], Any], ...] = (Middleware(),) | ||
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class RequestDispatcherImpl(Dispatcher, abc.ABC): | ||
def __init__(self, middlewares: Sequence[MiddlewareType] = ()) -> None: | ||
self._handlers: dict[Type[Request[Any]], HandlerType[Any, Any]] = {} | ||
self._middlewares: Sequence[MiddlewareType] = middlewares | ||
class DispatcherImpl(Dispatcher, abc.ABC): | ||
def __init__(self, middlewares: Middlewares = ()) -> None: | ||
self._handlers: dict[Type[Request[Any]], HandlerType[Request[Any], Any]] = {} | ||
self._middlewares: Middlewares = middlewares | ||
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def _register_handler(self, request: Type[R], handler: HandlerType[R, RRes]) -> None: | ||
self._handlers[request] = handler | ||
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@property | ||
def handlers(self) -> dict[Type[Request[Any]], HandlerType]: | ||
def handlers(self) -> dict[Type[Request[Any]], HandlerType[Request[Any], Any]]: | ||
return self._handlers | ||
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@property | ||
def middlewares(self) -> tuple[MiddlewareType, ...]: | ||
def middlewares(self) -> tuple[MiddlewareType[Request[Any], Any], ...]: | ||
return tuple(self._middlewares) | ||
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async def _handle(self, request: Request[RRes], *args: Any, **kwargs: Any) -> RRes: | ||
try: | ||
handler = self._handlers[type(request)] | ||
except KeyError: | ||
raise HandlerNotFound(f"Request handler for {type(request).__name__} request is not registered", request) | ||
except KeyError as err: | ||
raise HandlerNotFound( | ||
f"Request handler for {type(request).__name__} request is not registered", request, | ||
) from err | ||
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# Handler has to be wrapped with at least one middleware to initialize the handler if it is necessary | ||
middlewares = self._middlewares if self._middlewares else DEFAULT_MIDDLEWARES | ||
middlewares: Middlewares = self._middlewares if self._middlewares else DEFAULT_MIDDLEWARES | ||
wrapped_handler: Callable[..., Awaitable[RRes]] = self._wrap_middleware(middlewares, handler) | ||
return await wrapped_handler(request, *args, **kwargs) | ||
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@staticmethod | ||
def _wrap_middleware( | ||
middlewares: Sequence[MiddlewareType[R, RRes]], | ||
handler: HandlerType[R, RRes], | ||
) -> Callable[..., Awaitable[RRes]]: | ||
for middleware in reversed(middlewares): | ||
handler = functools.partial(middleware, handler) | ||
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return handler | ||
middlewares: Sequence[MiddlewareType[R, Any]], | ||
handler: HandlerType[R, Any], | ||
) -> Callable[..., Awaitable[Any]]: | ||
return wrap_middleware(middlewares, handler) |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,22 +1,27 @@ | ||
from .dispatchers.command import CommandDispatcher | ||
from .dispatchers.request import Dispatcher | ||
from .dispatchers.query import QueryDispatcher | ||
from .mediator import CommandMediator, Mediator, QueryMediator | ||
from .entities import Command, Query, Request | ||
from .handlers import CommandHandler, Handler, QueryHandler | ||
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from .observers.event import EventObserver, Listener | ||
from .mediator import CommandMediator, EventMediator, Mediator, QueryMediator | ||
from .entities import Command, Query, Request, Event | ||
from .handlers import CommandHandler, EventHandler, Handler, QueryHandler | ||
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__all__ = ( | ||
"Mediator", | ||
"CommandMediator", | ||
"QueryMediator", | ||
"Dispatcher", | ||
"CommandDispatcher", | ||
"QueryDispatcher", | ||
"EventMediator", | ||
"Request", | ||
"Command", | ||
"Query", | ||
"Handler", | ||
"Dispatcher", | ||
"Command", | ||
"CommandHandler", | ||
"CommandDispatcher", | ||
"Query", | ||
"QueryHandler", | ||
"QueryDispatcher", | ||
"Event", | ||
"EventHandler", | ||
"Listener", | ||
"EventObserver", | ||
) |
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