58 lines
2.1 KiB
Python
58 lines
2.1 KiB
Python
###############################################################################
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#
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# The MIT License (MIT)
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#
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# Copyright (c) Crossbar.io Technologies GmbH
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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###############################################################################
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from __future__ import print_function
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import txaio
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txaio.use_twisted()
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def cb(value):
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print("Callback:", value)
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return value # should always return input arg
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def eb(fail):
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# fail will implement txaio.IFailedPromise
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print("Errback:", fail)
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# fail.printTraceback()
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return fail # should always return input arg
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f0 = txaio.create_future()
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f1 = txaio.create_future()
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txaio.add_callbacks(f0, cb, eb)
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txaio.add_callbacks(f1, cb, eb)
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# ...
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txaio.reject(f0, RuntimeError("it failed"))
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# or can just "txaio.reject(f0)" if inside an except: block
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txaio.resolve(f1, "The answer is: 42")
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if txaio.using_asyncio:
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# for twisted, we don't need to enter the event-loop for this
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# simple example (since all results are already available), but
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# you'd simply use reactor.run()/.stop() or task.react() as normal
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import asyncio
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asyncio.get_event_loop().run_until_complete(f1)
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