Initial checkin of gRPC to third_party/

third_party/grpc/include/grpc++/impl/codegen/rpc_service_method.h

Index: third_party/grpc/include/grpc++/impl/codegen/rpc_service_method.h
diff --git a/third_party/grpc/include/grpc++/impl/codegen/rpc_service_method.h b/third_party/grpc/include/grpc++/impl/codegen/rpc_service_method.h
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index 0000000000000000000000000000000000000000..6256301677502525d315163e8952429599f6eb58
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+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
+#define GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
+
+#include <climits>
+#include <functional>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include <grpc/impl/codegen/byte_buffer.h>
+#include <grpc++/impl/codegen/config.h>
+#include <grpc++/impl/codegen/rpc_method.h>
+#include <grpc++/impl/codegen/status.h>
+
+namespace grpc {
+class ServerContext;
+class StreamContextInterface;
+
+// Base class for running an RPC handler.
+class MethodHandler {
+ public:
+  virtual ~MethodHandler() {}
+  struct HandlerParameter {
+    HandlerParameter(Call* c, ServerContext* context, grpc_byte_buffer* req,
+                     int max_size)
+        : call(c),
+          server_context(context),
+          request(req),
+          max_message_size(max_size) {}
+    Call* call;
+    ServerContext* server_context;
+    // Handler required to grpc_byte_buffer_destroy this
+    grpc_byte_buffer* request;
+    int max_message_size;
+  };
+  virtual void RunHandler(const HandlerParameter& param) = 0;
+};
+
+// Server side rpc method class
+class RpcServiceMethod : public RpcMethod {
+ public:
+  // Takes ownership of the handler
+  RpcServiceMethod(const char* name, RpcMethod::RpcType type,
+                   MethodHandler* handler)
+      : RpcMethod(name, type), server_tag_(nullptr), handler_(handler) {}
+
+  void set_server_tag(void* tag) { server_tag_ = tag; }
+  void* server_tag() const { return server_tag_; }
+  // if MethodHandler is nullptr, then this is an async method
+  MethodHandler* handler() const { return handler_.get(); }
+  void ResetHandler() { handler_.reset(); }
+
+ private:
+  void* server_tag_;
+  std::unique_ptr<MethodHandler> handler_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_IMPL_CODEGEN_RPC_SERVICE_METHOD_H