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appsync-router-4.0.3


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توضیحات

A framework easily routing AppSync requests using AWS Lambda
ویژگی مقدار
سیستم عامل -
نام فایل appsync-router-4.0.3
نام appsync-router
نسخه کتابخانه 4.0.3
نگهدارنده []
ایمیل نگهدارنده []
نویسنده Joseph Wortmann
ایمیل نویسنده jwortmann@quinovas.com
آدرس صفحه اصلی https://github.com/QuiNovas/appsync-router
آدرس اینترنتی https://pypi.org/project/appsync-router/
مجوز Apache 2.0
# appsync-router > **WARNING - Version 4.0.0 is a breaking change from version 3.x.x. Please review the documentation before upgrading** A micro-library that allows for the registration of functions corresponding to AWS AppSync routes. This allows for cleanly creating a single AWS Lambda datasource without large numbers of conditionals to evaluate the called route. ## Installation ```bash pip install appsync-router ``` ## Basic Usage ```python from appsync_router import discrete_route, route_event # Context is a TypedDict that makes access to # the items passed to your Lambda function simpler from appsync_router.context import Context # Here we are telling the router that when the field "getItems" # is called on the type "Query", call the function "get_items" @discrete_route("Query", "getItems") def get_items(context: Context) -> list: return [1, 2, 3, 4] def function_handler(event, context): # simply route the event and return the results return route_event(event) ``` > NOTE - `appsync-router` is designed to be used as a Direct Invocation AWS AppSync datasource. If you put a request VTL template in front of it, you must pass in the WHOLE $ctx/$context object. ## Route Types Each route type has an overloaded signature allowing for simple declaration. - `discrete_route` - This discretely routes to a named type and field - `multi_route` - This routes to a set of named type/field combinations - `pattern_route` - This routes to types/fields that match the type and field regex patterns provided - `glob_route` - This routes to the types/fields that match the type and field glob patterns provided ## Routing Events As seen in the example above, the simplest form of event routing is to call `route_event` with only the event argument. This will do the following: 1. Determine the route for the event 1. If no route is found, raise `NoRouteFoundException` 2. If more than one route is found, use the first route found 2. Route the event if it is a single context, or map the event to the route if it is multiple contexts Many times this will be sufficient. However, this behavior can be modified: - Passing a `default_route` of type `Route` to the `route_event` method will call your `default_route` if no route is found - Passing `short_circuit=False` to the `route_event` method will cause a `MultipleRoutesFoundException` to be raised in the case of multiple matched routes. - Passing an `executor` of type `concurrent.futures.Executor` to the `route_event` method will cause all batch invocations (where the `event` has a list of contexts) to be executed using your executor. ## Extensibility You may extend the `appsync_router` with your own route types. Any routes that you create must extend from the `appsync_router.routes.Route` class.


نیازمندی

مقدار نام
- multipledispatch


زبان مورد نیاز

مقدار نام
>=3.9 Python


نحوه نصب


نصب پکیج whl appsync-router-4.0.3:

    pip install appsync-router-4.0.3.whl


نصب پکیج tar.gz appsync-router-4.0.3:

    pip install appsync-router-4.0.3.tar.gz