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polybar/include/components/ipc.hpp
2016-11-20 23:04:31 +01:00

72 lines
1.6 KiB
C++

#pragma once
#include "common.hpp"
#include "components/logger.hpp"
#include "utils/functional.hpp"
#include "utils/concurrency.hpp"
POLYBAR_NS
/**
* Message types
*/
struct ipc_command {
static constexpr auto prefix{"cmd:"};
string payload;
};
struct ipc_hook {
static constexpr auto prefix{"hook:"};
string payload;
};
struct ipc_action {
static constexpr auto prefix{"action:"};
string payload;
};
/**
* Component used for inter-process communication.
*
* A unique messaging channel will be setup for each
* running process which will allow messages and
* events to be sent to the process externally.
*/
class ipc {
public:
explicit ipc(const logger& logger) : m_log(logger) {}
~ipc();
void attach_callback(callback<const ipc_command&>&& cb);
void attach_callback(callback<const ipc_hook&>&& cb);
void attach_callback(callback<const ipc_action&>&& cb);
void receive_messages();
protected:
void parse(const string& payload) const;
void delegate(const ipc_command& msg) const;
void delegate(const ipc_hook& msg) const;
void delegate(const ipc_action& msg) const;
private:
const logger& m_log;
vector<callback<const ipc_command&>> m_command_callbacks;
vector<callback<const ipc_hook&>> m_hook_callbacks;
vector<callback<const ipc_action&>> m_action_callbacks;
stateflag m_running{false};
string m_fifo;
int m_fd;
};
namespace {
/**
* Configure injection module
*/
template <typename T = unique_ptr<ipc>>
di::injector<T> configure_ipc() {
return di::make_injector(configure_logger());
}
}
POLYBAR_NS_END