Bitcoin Core  27.99.0
P2P Digital Currency
interfaces.cpp
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1 // Copyright (c) 2021-2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <interfaces/echo.h>
6 #include <interfaces/handler.h>
7 
8 #include <boost/signals2/connection.hpp>
9 #include <memory>
10 #include <utility>
11 
12 namespace common {
13 namespace {
14 class CleanupHandler : public interfaces::Handler
15 {
16 public:
17  explicit CleanupHandler(std::function<void()> cleanup) : m_cleanup(std::move(cleanup)) {}
18  ~CleanupHandler() override { if (!m_cleanup) return; m_cleanup(); m_cleanup = nullptr; }
19  void disconnect() override { if (!m_cleanup) return; m_cleanup(); m_cleanup = nullptr; }
20  std::function<void()> m_cleanup;
21 };
22 
23 class SignalHandler : public interfaces::Handler
24 {
25 public:
26  explicit SignalHandler(boost::signals2::connection connection) : m_connection(std::move(connection)) {}
27 
28  void disconnect() override { m_connection.disconnect(); }
29 
30  boost::signals2::scoped_connection m_connection;
31 };
32 
33 class EchoImpl : public interfaces::Echo
34 {
35 public:
36  std::string echo(const std::string& echo) override { return echo; }
37 };
38 } // namespace
39 } // namespace common
40 
41 namespace interfaces {
42 std::unique_ptr<Handler> MakeCleanupHandler(std::function<void()> cleanup)
43 {
44  return std::make_unique<common::CleanupHandler>(std::move(cleanup));
45 }
46 
47 std::unique_ptr<Handler> MakeSignalHandler(boost::signals2::connection connection)
48 {
49  return std::make_unique<common::SignalHandler>(std::move(connection));
50 }
51 
52 std::unique_ptr<Echo> MakeEcho() { return std::make_unique<common::EchoImpl>(); }
53 } // namespace interfaces
Simple string echoing interface for testing.
Definition: echo.h:14
Generic interface for managing an event handler or callback function registered with another interfac...
Definition: handler.h:23
std::function< void()> m_cleanup
Definition: interfaces.cpp:20
boost::signals2::scoped_connection m_connection
Definition: interfaces.cpp:30
Definition: args.cpp:833
std::unique_ptr< Handler > MakeSignalHandler(boost::signals2::connection connection)
Return handler wrapping a boost signal connection.
Definition: interfaces.cpp:47
std::unique_ptr< Echo > MakeEcho()
Return implementation of Echo interface.
Definition: interfaces.cpp:52
std::unique_ptr< Handler > MakeCleanupHandler(std::function< void()> cleanup)
Return handler wrapping a cleanup function.
Definition: interfaces.cpp:42
static RPCHelpMan echo(const std::string &name)
Definition: node.cpp:272