Simple mapper/scheduler/partitioner functions implemented

Change-Id: I553b196943022451d8dc4984fe37b2b228c8f4cf

Signed-off-by: Ulas C. Kozat <ulas.kozat@huawei.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/lib/thrift/TMultiplexedProcessor.py b/lib/thrift/TMultiplexedProcessor.py
new file mode 100644
index 0000000..a8d5565
--- /dev/null
+++ b/lib/thrift/TMultiplexedProcessor.py
@@ -0,0 +1,58 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
+from thrift.Thrift import TProcessor, TMessageType, TException
+from thrift.protocol import TProtocolDecorator, TMultiplexedProtocol
+
+class TMultiplexedProcessor(TProcessor):
+  def __init__(self):
+    self.services = {}
+
+  def registerProcessor(self, serviceName, processor):
+    self.services[serviceName] = processor
+
+  def process(self, iprot, oprot):
+    (name, type, seqid) = iprot.readMessageBegin();
+    if type != TMessageType.CALL & type != TMessageType.ONEWAY:
+      raise TException("TMultiplex protocol only supports CALL & ONEWAY")
+
+    index = name.find(TMultiplexedProtocol.SEPARATOR)
+    if index < 0:
+      raise TException("Service name not found in message name: " + name + ". Did you forget to use TMultiplexProtocol in your client?")
+
+    serviceName = name[0:index]
+    call = name[index+len(TMultiplexedProtocol.SEPARATOR):]
+    if not serviceName in self.services:
+      raise TException("Service name not found: " + serviceName + ". Did you forget to call registerProcessor()?")
+
+    standardMessage = (
+      call,
+      type,
+      seqid
+    )
+    return self.services[serviceName].process(StoredMessageProtocol(iprot, standardMessage), oprot)
+
+
+class StoredMessageProtocol(TProtocolDecorator.TProtocolDecorator):
+  def __init__(self, protocol, messageBegin):
+    TProtocolDecorator.TProtocolDecorator.__init__(self, protocol)
+    self.messageBegin = messageBegin
+
+  def readMessageBegin(self):
+    return self.messageBegin