97 lines
2.6 KiB
Python
97 lines
2.6 KiB
Python
# Copyright (c) 2014 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import abc
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import multiprocessing
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import six
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from poppy import bootstrap
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@six.add_metaclass(abc.ABCMeta)
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class Server(object):
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name = "poppy-server"
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def __init__(self):
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self.process = None
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@abc.abstractmethod
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def get_target(self, conf):
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"""Prepares the target object
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This method is meant to initialize server's
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bootstrap and return a callable to run the
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server.
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:param conf: The config instance for the
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bootstrap class
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:returns: A callable object
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"""
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raise NotImplementedError
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def is_alive(self):
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"""Returns True IF the server is running."""
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if self.process is None:
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return False
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return self.process.is_alive()
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def start(self, conf):
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"""Starts the server process.
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:param conf: The config instance to use for
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the new process
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:returns: A `multiprocessing.Process` instance
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"""
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target = self.get_target(conf)
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if not callable(target):
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raise RuntimeError("Target not callable")
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self.process = multiprocessing.Process(target=target,
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name=self.name)
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self.process.daemon = True
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self.process.start()
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# Set the timeout. The calling thread will be blocked until the process
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# whose join() method is called terminates or until the timeout occurs.
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# The timeout is set, so that the calling (API tests)
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# & called processes (CDN Server) can execute in parallel.
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self.process.join(.1)
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return self.process
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def stop(self):
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"""Terminates a process
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This method kills a process by
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calling `terminate`. Note that
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children of this process won't be
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terminated but become orphaned.
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"""
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self.process.terminate()
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class CDNServer(Server):
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name = "poppy-server"
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def get_target(self, conf):
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server = bootstrap.Bootstrap(conf)
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return server.run
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