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S ) a* Contains metaclasses used to create protocol service and service stub
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The GeneratedServiceType and GeneratedServiceStubType metaclasses are used to
inject all useful functionality into the classes output by the protocol
compiler at compile-time.
z petar@google.com (Petar Petrov)c @ s e Zd ZdZdZdd� ZdS )�GeneratedServiceTypea� Metaclass for service classes created at runtime from ServiceDescriptors.
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in the protocol message.
The protocol compiler currently uses this metaclass to create protocol service
classes at runtime. Clients can also manually create their own classes at
runtime, as in this example:
mydescriptor = ServiceDescriptor(.....)
class MyProtoService(service.Service):
__metaclass__ = GeneratedServiceType
DESCRIPTOR = mydescriptor
myservice_instance = MyProtoService()
...
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DESCRIPTORc C s. t j|krdS |t j }t|�}|j| � dS )a� Creates a message service class.
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describing this protocol service type.
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r c sB t t| �j|||� tj|kr"dS |tj }t|�}|j| � dS )a` Creates a message service stub class.
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dS )r aD This class constructs a protocol service class using a service descriptor.
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method.
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input_type�_concrete_class)r r r r r r$ � s z _ServiceBuilder._GetRequestClassc C s |j | jkrtd��|jjS )a Returns the class of the response protocol message.
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method.
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r+ � output_typer- )r r r r r r% � s z!_ServiceBuilder._GetResponseClassc s � �fdd�S )z�Generates and returns a method that can be set for a service methods.
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c s �j � j||�S )N)�_NonImplementedMethodr )�instr r r )r) r r r r! � s z?_ServiceBuilder._GenerateNonImplementedMethod.<locals>.<lambda>r )r r) r )r) r r r( � s
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S ) r a� Constructs a protocol service stub class using a service descriptor.
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s z9_ServiceStubBuilder._GenerateStubMethod.<locals>.<lambda>)Nr )r r) r )r) r r r4 s z'_ServiceStubBuilder._GenerateStubMethodc C s |j j||||jj|�S )a� The body of all service methods in the generated stub class.
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