1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include "google/cloud/pubsub/connection_options.h"
16 #include "google/cloud/pubsub/internal/user_agent_prefix.h"
17 #include <thread>
18 
19 namespace google {
20 namespace cloud {
21 namespace pubsub {
22 inline namespace GOOGLE_CLOUD_CPP_PUBSUB_NS {
23 
default_endpoint()24 std::string ConnectionOptionsTraits::default_endpoint() {
25   return "pubsub.googleapis.com";
26 }
27 
user_agent_prefix()28 std::string ConnectionOptionsTraits::user_agent_prefix() {
29   return pubsub_internal::UserAgentPrefix();
30 }
31 
default_num_channels()32 int ConnectionOptionsTraits::default_num_channels() {
33   auto const ncores = std::thread::hardware_concurrency();
34   return ncores == 0 ? 4 : static_cast<int>(ncores * 4);
35 }
36 
37 }  // namespace GOOGLE_CLOUD_CPP_PUBSUB_NS
38 }  // namespace pubsub
39 }  // namespace cloud
40 }  // namespace google
41