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# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Entry points into GRPC."""
import threading
from _adapter import fore
from _framework.base.packets import implementations as _tickets_implementations
from _framework.face import implementations as _face_implementations
from _framework.foundation import logging_pool
from grpc_early_adopter import _face_utilities
from grpc_early_adopter import interfaces
_MEGA_TIMEOUT = 60 * 60 * 24
_THREAD_POOL_SIZE = 80
class _Server(interfaces.Server):
def __init__(self, breakdown, port, private_key, certificate_chain):
self._lock = threading.Lock()
self._breakdown = breakdown
self._port = port
self._private_key = private_key
self._certificate_chain = certificate_chain
self._pool = None
self._fore_link = None
self._back = None
def start(self):
"""See interfaces.Server.start for specification."""
with self._lock:
if self._pool is None:
self._pool = logging_pool.pool(_THREAD_POOL_SIZE)
servicer = _face_implementations.servicer(
self._pool,
inline_value_in_value_out_methods=self._breakdown.unary_unary_methods,
inline_value_in_stream_out_methods=self._breakdown.unary_stream_methods,
inline_stream_in_value_out_methods=self._breakdown.stream_unary_methods,
inline_stream_in_stream_out_methods=self._breakdown.stream_stream_methods)
self._fore_link = fore.ForeLink(
self._pool, self._breakdown.request_deserializers,
self._breakdown.response_serializers, None,
((self._private_key, self._certificate_chain),), port=self._port)
port = self._fore_link.start()
self._back = _tickets_implementations.back(
servicer, self._pool, self._pool, self._pool, _MEGA_TIMEOUT,
_MEGA_TIMEOUT)
self._fore_link.join_rear_link(self._back)
self._back.join_fore_link(self._fore_link)
return port
else:
raise ValueError('Server currently running!')
def stop(self):
"""See interfaces.Server.stop for specification."""
with self._lock:
if self._pool is None:
raise ValueError('Server not running!')
else:
self._fore_link.stop()
self._pool.shutdown(wait=True)
self._pool = None
def _build_server(methods, port, private_key, certificate_chain):
breakdown = _face_utilities.break_down(methods)
return _Server(breakdown, port, private_key, certificate_chain)
def insecure_server(methods, port):
"""Constructs an insecure interfaces.Server.
Args:
methods: A dictionary from RPC method name to
interfaces.RpcMethod object describing the RPCs to be
serviced by the created server.
port: The port on which to serve.
Returns:
An interfaces.Server that will run with no security and
service unsecured raw requests.
"""
return _build_server(methods, port, None, None)
def secure_server(methods, port, private_key, certificate_chain):
"""Constructs a secure interfaces.Server.
Args:
methods: A dictionary from RPC method name to
interfaces.RpcMethod object describing the RPCs to be
serviced by the created server.
port: The port on which to serve.
private_key: A pem-encoded private key.
certificate_chain: A pem-encoded certificate chain.
Returns:
An interfaces.Server that will serve secure traffic.
"""
return _build_server(methods, port, private_key, certificate_chain)
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