[CalendarServer-changes] [14748] twext/trunk/twext/internet

[source_changes at macosforge.org]

Revision: 14748
          http://trac.calendarserver.org//changeset/14748
Author:   sagen at apple.com
Date:     2015-05-04 20:33:50 -0700 (Mon, 04 May 2015)
Log Message:
-----------
Starting work on unix domain socket file support

Modified Paths:
--------------
    twext/trunk/twext/internet/sendfdport.py

Added Paths:
-----------
    twext/trunk/twext/internet/socketfile.py

Modified: twext/trunk/twext/internet/sendfdport.py
===================================================================
--- twext/trunk/twext/internet/sendfdport.py	2015-05-05 03:20:10 UTC (rev 14747)
+++ twext/trunk/twext/internet/sendfdport.py	2015-05-05 03:33:50 UTC (rev 14748)
@@ -511,6 +511,9 @@
                     peeraddr = skt.getpeername()
                 except SocketError:
                     peeraddr = ('0.0.0.0', 0)
+                # FIXME: when using UNIX Domain sockets, peeraddr = ""
+                if not peeraddr:
+                    peeraddr = ('0.0.0.0', 0)
                 protocol = self.protocolFactory.buildProtocol(peeraddr)
                 transport = self.transportFactory(skt, peeraddr,
                                                   description, protocol)

Added: twext/trunk/twext/internet/socketfile.py
===================================================================
--- twext/trunk/twext/internet/socketfile.py	                        (rev 0)
+++ twext/trunk/twext/internet/socketfile.py	2015-05-05 03:33:50 UTC (rev 14748)
@@ -0,0 +1,116 @@
+##
+# Copyright (c) 2015 Apple Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##
+
+"""
+Socket file implementation for MaxAccept
+"""
+
+__all__ = [
+    "MaxAcceptSocketFileServer",
+]
+
+
+from twisted.application import service
+from twisted.internet import endpoints
+from twisted.internet.defer import succeed, inlineCallbacks
+
+from twext.python.log import Logger
+
+log = Logger()
+
+
+
+# class MaxAcceptPortMixin(object):
+#     """
+#     Mixin for resetting maxAccepts.
+#     """
+#     def doRead(self):
+#         self.numberAccepts = min(
+#             self.factory.maxRequests - self.factory.outstandingRequests,
+#             self.factory.maxAccepts
+#         )
+#         tcp.Port.doRead(self)
+
+
+
+# class MaxAcceptTCPPort(MaxAcceptPortMixin, tcp.Port):
+#     """
+#     Use for non-inheriting tcp ports.
+#     """
+
+
+
+
+
+
+
+def _allConnectionsClosed(protocolFactory):
+    """
+    Check to see if protocolFactory implements allConnectionsClosed( ) and
+    if so, call it.  Otherwise, return immediately.
+    This allows graceful shutdown by waiting for all requests to be completed.
+
+    @param protocolFactory: (usually) an HTTPFactory implementing
+        allConnectionsClosed which returns a Deferred which fires when all
+        connections are closed.
+
+    @return: A Deferred firing None when all connections are closed, or
+        immediately if the given factory does not track its connections (e.g.
+        InheritingProtocolFactory)
+    """
+    if hasattr(protocolFactory, "allConnectionsClosed"):
+        return protocolFactory.allConnectionsClosed()
+    return succeed(None)
+
+
+
+
+class MaxAcceptSocketFileServer(service.Service):
+    """
+    Socket File server
+
+    @ivar myPort: When running, this is set to the L{IListeningPort} being
+        managed by this service.
+    """
+
+    def __init__(self, protocolFactory, address, backlog=None):
+        self.protocolFactory = protocolFactory
+        self.protocolFactory.myServer = self
+        self.address = address
+        self.backlog = backlog
+        self.myPort = None
+
+
+    @inlineCallbacks
+    def startService(self):
+        from twisted.internet import reactor
+        endpoint = endpoints.UNIXServerEndpoint(
+            reactor, self.address, backlog=self.backlog,
+        )
+        self.myPort = yield endpoint.listen(self.protocolFactory)
+
+
+    @inlineCallbacks
+    def stopService(self):
+        """
+        Wait for outstanding requests to finish
+
+        @return: a Deferred which fires when all outstanding requests are
+            complete
+        """
+        if self.myPort is not None:
+            yield self.myPort.stopListening()
+        yield _allConnectionsClosed(self.protocolFactory)
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