import asyncio
import functools


class AsyncIOAction(object):
    def __init__(self, fn):
        this.exec = fn

    def map(self, fn):
        @functools.wraps(fn)
        async def exec():
            value = await self.exec()
            return fn(value)

        return AsyncIOAction(exec)

    def flat_map(self, fn):
        @functools.wraps(fn)
        async def exec():
            value = await self.exec()
            return await fn(value).exec()

        return AsyncIOAction(exec)

    @classmethod
    def all(items):
        async def exec():
            return await asyncio.wait([x.exec() for x in items])

        return AsyncIOAction(exec)

def aiohttp_action(request):
    async def exec():
        return await aiohttp.request(**request)

    return AsyncIOAction(exec)
        
# blocking.py
import functools

class BlockingIOAction(object):
    def __init__(self, fn):
        this.exec = fn

    def map(self, fn):
        @functools.wraps(self, fn)
        def exec():
            value = self.exec()
            return fn(value)
        return BlockingIOAction(exec)

    def flat_map(self, fn):
        @functools.wraps(fn)
        def exec():
            value = self.exec()
            return fn(value).exec()
        
        return BlockingIOAction(exec)

    @classmethod
    def all(items):
        def exec():
            return [x.exec() for x in items]

        return BlockingIOAction(exec)

def requests_action(request): # or httplib2 etc.
    def exec():
        requests.request(**request)

    return BlockingIOAction(exec)

# twisted.py

class TwistedIOAction(object):
    ...

Should be pretty easy with twisted deferred too. Idea being, calling code would choose an IO type, configure the google cloud platform library appropriately, call a method on some API endpoint and then be able to call .exec() on the returned action. The calling code would then be able to receive the value, await and receive the value, or yield it in twisted inline callbacks.

asyncio support #3103

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