MongoDB C++ Driver  mongocxx-3.0.1
pool.hpp
1 // Copyright 2015 MongoDB Inc.
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 #pragma once
16 
17 #include <functional>
18 #include <memory>
19 
20 #include <bsoncxx/stdx/optional.hpp>
21 #include <mongocxx/options/ssl.hpp>
22 #include <mongocxx/stdx.hpp>
23 #include <mongocxx/uri.hpp>
24 
25 #include <mongocxx/config/prelude.hpp>
26 
27 namespace mongocxx {
28 MONGOCXX_INLINE_NAMESPACE_BEGIN
29 
30 class client;
31 
49 class MONGOCXX_API pool {
50  public:
58  pool(const uri& mongodb_uri = mongocxx::uri(),
59  stdx::optional<options::ssl> ssl_options = stdx::nullopt);
60 
64  ~pool();
65 
72  using entry = std::unique_ptr<client, std::function<void(client*)>>;
73 
78  entry acquire();
79 
84  stdx::optional<entry> try_acquire();
85 
86  private:
87  MONGOCXX_PRIVATE void _release(client* client);
88 
89  class MONGOCXX_PRIVATE impl;
90  const std::unique_ptr<impl> _impl;
91 };
92 
93 MONGOCXX_INLINE_NAMESPACE_END
94 } // namespace mongocxx
95 
96 #include <mongocxx/config/postlude.hpp>
Class representing a MongoDB connection string URI.
Definition: uri.hpp:40
Definition: bulk_write.hpp:22
Class representing a client connection to MongoDB.
Definition: client.hpp:49
std::unique_ptr< client, std::function< void(client *)>> entry
An entry is a handle on a client object acquired via the pool.
Definition: pool.hpp:72
A pool of client objects associated with a MongoDB deployment.
Definition: pool.hpp:49