Support for python grpc - continuing the work from the pull request #4270 #4705 (#5613)

* Support for python grpc

* add few fixes

* Fixes build

* Fix python generator

* Add tests

* Fix grpc python test

* Fix tests and add incomplete python generator

* Fix python generator

* Add python generator methods

* Fix Appveyor build

* grpc python support v0.1

* Update tests

* update grpctest

* Remove duplicated code and fix a brace

* tests for flatbuffers grpc python

* Updated tests + removed SerializeToString, From String

* remove pickle import

* include missing files in ci - BUILD and generated test result

tests/MyGame/Example/monster_test_grpc_fb.py

@@ -0,0 +1,241 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+import grpc
+
+
+class MonsterStorageStub(object):
+  
+  def __init__(self, channel):
+    """Constructor.
+    
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.Store = channel.unary_unary(
+        '/MyGame.Example.MonsterStorage/Store',
+        
+        
+        )
+    self.Retrieve = channel.unary_stream(
+        '/MyGame.Example.MonsterStorage/Retrieve',
+        
+        
+        )
+    self.GetMaxHitPoint = channel.stream_unary(
+        '/MyGame.Example.MonsterStorage/GetMaxHitPoint',
+        
+        
+        )
+    self.GetMinMaxHitPoints = channel.unary_unary(
+        '/MyGame.Example.MonsterStorage/GetMinMaxHitPoints',
+        
+        
+        )
+
+
+class MonsterStorageServicer(object):
+  
+  def Store(self, request, context):
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+  
+  def Retrieve(self, request, context):
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+  
+  def GetMaxHitPoint(self, request_iterator, context):
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+  
+  def GetMinMaxHitPoints(self, request, context):
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_MonsterStorageServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'Store': grpc.unary_unary_rpc_method_handler(
+          servicer.Store,
+          
+          
+      ),
+      'Retrieve': grpc.unary_stream_rpc_method_handler(
+          servicer.Retrieve,
+          
+          
+      ),
+      'GetMaxHitPoint': grpc.stream_unary_rpc_method_handler(
+          servicer.GetMaxHitPoint,
+          
+          
+      ),
+      'GetMinMaxHitPoints': grpc.unary_unary_rpc_method_handler(
+          servicer.GetMinMaxHitPoints,
+          
+          
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'MyGame.Example.MonsterStorage', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  
+  
+  class MonsterStorageStub(object):
+    
+    def __init__(self, channel):
+      """Constructor.
+      
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.Store = channel.unary_unary(
+          '/MyGame.Example.MonsterStorage/Store',
+          
+          
+          )
+      self.Retrieve = channel.unary_stream(
+          '/MyGame.Example.MonsterStorage/Retrieve',
+          
+          
+          )
+      self.GetMaxHitPoint = channel.stream_unary(
+          '/MyGame.Example.MonsterStorage/GetMaxHitPoint',
+          
+          
+          )
+      self.GetMinMaxHitPoints = channel.unary_unary(
+          '/MyGame.Example.MonsterStorage/GetMinMaxHitPoints',
+          
+          
+          )
+  
+  
+  class MonsterStorageServicer(object):
+    
+    def Store(self, request, context):
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+    
+    def Retrieve(self, request, context):
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+    
+    def GetMaxHitPoint(self, request_iterator, context):
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+    
+    def GetMinMaxHitPoints(self, request, context):
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+  
+  
+  def add_MonsterStorageServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'Store': grpc.unary_unary_rpc_method_handler(
+            servicer.Store,
+            
+            
+        ),
+        'Retrieve': grpc.unary_stream_rpc_method_handler(
+            servicer.Retrieve,
+            
+            
+        ),
+        'GetMaxHitPoint': grpc.stream_unary_rpc_method_handler(
+            servicer.GetMaxHitPoint,
+            
+            
+        ),
+        'GetMinMaxHitPoints': grpc.unary_unary_rpc_method_handler(
+            servicer.GetMinMaxHitPoints,
+            
+            
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'MyGame.Example.MonsterStorage', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+  
+  
+  class BetaMonsterStorageServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+    
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    def Store(self, request, context):
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def Retrieve(self, request, context):
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def GetMaxHitPoint(self, request_iterator, context):
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def GetMinMaxHitPoints(self, request, context):
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+  
+  
+  class BetaMonsterStorageStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+    
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    def Store(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      raise NotImplementedError()
+    Store.future = None
+    def Retrieve(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      raise NotImplementedError()
+    def GetMaxHitPoint(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      raise NotImplementedError()
+    GetMaxHitPoint.future = None
+    def GetMinMaxHitPoints(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      raise NotImplementedError()
+    GetMinMaxHitPoints.future = None
+  
+  
+  def beta_create_MonsterStorage_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+    
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    method_implementations = {
+      ('MyGame.Example.MonsterStorage', 'GetMaxHitPoint'): face_utilities.stream_unary_inline(servicer.GetMaxHitPoint),
+      ('MyGame.Example.MonsterStorage', 'GetMinMaxHitPoints'): face_utilities.unary_unary_inline(servicer.GetMinMaxHitPoints),
+      ('MyGame.Example.MonsterStorage', 'Retrieve'): face_utilities.unary_stream_inline(servicer.Retrieve),
+      ('MyGame.Example.MonsterStorage', 'Store'): face_utilities.unary_unary_inline(servicer.Store),
+    }
+    server_options = beta_implementations.server_options(thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+  
+  
+  def beta_create_MonsterStorage_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+    
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    cardinalities = {
+      'GetMaxHitPoint': cardinality.Cardinality.STREAM_UNARY,
+      'GetMinMaxHitPoints': cardinality.Cardinality.UNARY_UNARY,
+      'Retrieve': cardinality.Cardinality.UNARY_STREAM,
+      'Store': cardinality.Cardinality.UNARY_UNARY,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'MyGame.Example.MonsterStorage', cardinalities, options=stub_options)
+except ImportError:
+  pass