Initial checkin of gRPC to third_party/

third_party/grpc/src/cpp/server/server_builder.cc

+/*
+ *
+ * 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.
+ *
+ */
+
+#include <grpc++/server_builder.h>
+
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpc++/impl/service_type.h>
+#include <grpc++/server.h>
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc {
+
+ServerBuilder::ServerBuilder()
+    : max_message_size_(-1), generic_service_(nullptr) {
+  grpc_compression_options_init(&compression_options_);
+}
+
+std::unique_ptr<ServerCompletionQueue> ServerBuilder::AddCompletionQueue() {
+  ServerCompletionQueue* cq = new ServerCompletionQueue();
+  cqs_.push_back(cq);
+  return std::unique_ptr<ServerCompletionQueue>(cq);
+}
+
+void ServerBuilder::RegisterService(Service* service) {
+  services_.emplace_back(new NamedService(service));
+}
+
+void ServerBuilder::RegisterService(const grpc::string& addr,
+                                    Service* service) {
+  services_.emplace_back(new NamedService(addr, service));
+}
+
+void ServerBuilder::RegisterAsyncGenericService(AsyncGenericService* service) {
+  if (generic_service_) {
+    gpr_log(GPR_ERROR,
+            "Adding multiple AsyncGenericService is unsupported for now. "
+            "Dropping the service %p",
+            service);
+    return;
+  }
+  generic_service_ = service;
+}
+
+void ServerBuilder::SetOption(std::unique_ptr<ServerBuilderOption> option) {
+  options_.push_back(std::move(option));
+}
+
+void ServerBuilder::AddListeningPort(const grpc::string& addr,
+                                     std::shared_ptr<ServerCredentials> creds,
+                                     int* selected_port) {
+  Port port = {addr, creds, selected_port};
+  ports_.push_back(port);
+}
+
+std::unique_ptr<Server> ServerBuilder::BuildAndStart() {
+  std::unique_ptr<ThreadPoolInterface> thread_pool;
+  for (auto it = services_.begin(); it != services_.end(); ++it) {
+    if ((*it)->service->has_synchronous_methods()) {
+      if (thread_pool == nullptr) {
+        thread_pool.reset(CreateDefaultThreadPool());
+        break;
+      }
+    }
+  }
+  ChannelArguments args;
+  for (auto option = options_.begin(); option != options_.end(); ++option) {
+    (*option)->UpdateArguments(&args);
+  }
+  if (max_message_size_ > 0) {
+    args.SetInt(GRPC_ARG_MAX_MESSAGE_LENGTH, max_message_size_);
+  }
+  args.SetInt(GRPC_COMPRESSION_ALGORITHM_STATE_ARG,
+              compression_options_.enabled_algorithms_bitset);
+  std::unique_ptr<Server> server(
+      new Server(thread_pool.release(), true, max_message_size_, &args));
+  for (auto cq = cqs_.begin(); cq != cqs_.end(); ++cq) {
+    grpc_server_register_completion_queue(server->server_, (*cq)->cq(),
+                                          nullptr);
+  }
+  for (auto service = services_.begin(); service != services_.end();
+       service++) {
+    if (!server->RegisterService((*service)->host.get(), (*service)->service)) {
+      return nullptr;
+    }
+  }
+  if (generic_service_) {
+    server->RegisterAsyncGenericService(generic_service_);
+  } else {
+    for (auto it = services_.begin(); it != services_.end(); ++it) {
+      if ((*it)->service->has_generic_methods()) {
+        gpr_log(GPR_ERROR,
+                "Some methods were marked generic but there is no "
+                "generic service registered.");
+        return nullptr;
+      }
+    }
+  }
+  for (auto port = ports_.begin(); port != ports_.end(); port++) {
+    int r = server->AddListeningPort(port->addr, port->creds.get());
+    if (!r) return nullptr;
+    if (port->selected_port != nullptr) {
+      *port->selected_port = r;
+    }
+  }
+  auto cqs_data = cqs_.empty() ? nullptr : &cqs_[0];
+  if (!server->Start(cqs_data, cqs_.size())) {
+    return nullptr;
+  }
+  return server;
+}
+
+}  // namespace grpc