Initial checkin of gRPC to third_party/

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

Index: third_party/grpc/include/grpc++/impl/codegen/service_type.h
diff --git a/third_party/grpc/include/grpc++/impl/codegen/service_type.h b/third_party/grpc/include/grpc++/impl/codegen/service_type.h
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index 0000000000000000000000000000000000000000..deb91a41d9633cfcd930b14b80ab350e1874786d
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+/*
+ *
+ * Copyright 2015-2016, 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_SERVICE_TYPE_H
+#define GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H
+
+#include <grpc++/impl/codegen/config.h>
+#include <grpc++/impl/codegen/rpc_service_method.h>
+#include <grpc++/impl/codegen/serialization_traits.h>
+#include <grpc++/impl/codegen/server_interface.h>
+#include <grpc++/impl/codegen/status.h>
+
+namespace grpc {
+
+class Call;
+class CompletionQueue;
+class Server;
+class ServerInterface;
+class ServerCompletionQueue;
+class ServerContext;
+
+class ServerAsyncStreamingInterface {
+ public:
+  virtual ~ServerAsyncStreamingInterface() {}
+
+  virtual void SendInitialMetadata(void* tag) = 0;
+
+ private:
+  friend class ServerInterface;
+  virtual void BindCall(Call* call) = 0;
+};
+
+class Service {
+ public:
+  Service() : server_(nullptr) {}
+  virtual ~Service() {}
+
+  bool has_async_methods() const {
+    for (auto it = methods_.begin(); it != methods_.end(); ++it) {
+      if (*it && (*it)->handler() == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_synchronous_methods() const {
+    for (auto it = methods_.begin(); it != methods_.end(); ++it) {
+      if (*it && (*it)->handler() != nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_generic_methods() const {
+    for (auto it = methods_.begin(); it != methods_.end(); ++it) {
+      if (it->get() == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+ protected:
+  template <class Message>
+  void RequestAsyncUnary(int index, ServerContext* context, Message* request,
+                         ServerAsyncStreamingInterface* stream,
+                         CompletionQueue* call_cq,
+                         ServerCompletionQueue* notification_cq, void* tag) {
+    server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncClientStreaming(int index, ServerContext* context,
+                                   ServerAsyncStreamingInterface* stream,
+                                   CompletionQueue* call_cq,
+                                   ServerCompletionQueue* notification_cq,
+                                   void* tag) {
+    server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+  template <class Message>
+  void RequestAsyncServerStreaming(int index, ServerContext* context,
+                                   Message* request,
+                                   ServerAsyncStreamingInterface* stream,
+                                   CompletionQueue* call_cq,
+                                   ServerCompletionQueue* notification_cq,
+                                   void* tag) {
+    server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncBidiStreaming(int index, ServerContext* context,
+                                 ServerAsyncStreamingInterface* stream,
+                                 CompletionQueue* call_cq,
+                                 ServerCompletionQueue* notification_cq,
+                                 void* tag) {
+    server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+
+  void AddMethod(RpcServiceMethod* method) { methods_.emplace_back(method); }
+
+  void MarkMethodAsync(int index) {
+    if (methods_[index].get() == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Cannot mark the method as 'async' because it has already been "
+              "marked as 'generic'.");
+      return;
+    }
+    methods_[index]->ResetHandler();
+  }
+
+  void MarkMethodGeneric(int index) {
+    if (methods_[index]->handler() == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Cannot mark the method as 'generic' because it has already been "
+              "marked as 'async'.");
+    }
+    methods_[index].reset();
+  }
+
+ private:
+  friend class Server;
+  friend class ServerInterface;
+  ServerInterface* server_;
+  std::vector<std::unique_ptr<RpcServiceMethod>> methods_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H