io.grpc.ServerCallHandler Maven / Gradle / Ivy
/*
* Copyright 2014, Google Inc. All rights reserved.
*
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* modification, are permitted provided that the following conditions are
* met:
*
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* in the documentation and/or other materials provided with the
* distribution.
*
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package io.grpc;
import javax.annotation.concurrent.ThreadSafe;
/**
* Interface to initiate processing of incoming remote calls. Advanced applications and generated
* code will implement this interface to allows {@link Server}s to invoke service methods.
*/
@ThreadSafe
public interface ServerCallHandler {
/**
* Produce a non-{@code null} listener for the incoming call. Implementations are free to call
* methods on {@code call} before this method has returned.
*
* If the implementation throws an exception, {@code call} will be closed with an error.
* Implementations must not throw an exception if they started processing that may use {@code
* call} on another thread.
*
* @param method descriptor for the call
* @param call object for responding to the remote client.
* @return listener for processing incoming request messages for {@code call}
*/
ServerCall.Listener startCall(
MethodDescriptor method,
ServerCall call,
Metadata.Headers headers);
}