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Communicate via stdin/stdout with ctrl script

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badaix 2021-05-26 23:57:59 +02:00
parent 91ea368121
commit 6e6b63ec26
5 changed files with 226 additions and 82 deletions
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16
server/streamreader/pcm_stream.hpp
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@ -45,6 +45,7 @@
namespace bp = boost::process;
using json = nlohmann::json;
namespace streamreader
@ -111,16 +112,20 @@ public:
class CtrlScript
{
public:
using OnReceive = std::function<void(std::string msg)>;
CtrlScript(boost::asio::io_context& ioc, const std::string& script);
virtual ~CtrlScript();
void start(const std::string& stream_id, const ServerSettings& server_setttings, const std::string& command = "", const std::string& param = "");
void start(const std::string& stream_id, const ServerSettings& server_setttings, const OnReceive& receive_handler);
void stop();
/// Send a message to stdin of the process
void send(const std::string& msg);
private:
void stderrReadLine();
void stdoutReadLine();
void logScript(const std::string& source, std::string line);
void logScript(std::string line);
bp::child process_;
bp::pipe pipe_stdout_;
@ -129,9 +134,11 @@ private:
std::unique_ptr<boost::asio::posix::stream_descriptor> stream_stderr_;
boost::asio::streambuf streambuf_stdout_;
boost::asio::streambuf streambuf_stderr_;
OnReceive receive_handler_;
boost::asio::io_context& ioc_;
std::string script_;
bp::opstream in_;
};
@ -162,7 +169,7 @@ public:
std::shared_ptr<msg::StreamTags> getMeta() const;
void setMeta(const json& j);
void control(const std::string& command, const std::string& param);
virtual void control(const std::string& command, const json& params);
virtual ReaderState getState() const;
virtual json toJson() const;
@ -172,6 +179,7 @@ public:
protected:
std::atomic<bool> active_;
void onControlMsg(const std::string& msg);
void setState(ReaderState newState);
void chunkRead(const msg::PcmChunk& chunk);
void resync(const std::chrono::nanoseconds& duration);
@ -189,7 +197,7 @@ protected:
boost::asio::io_context& ioc_;
ServerSettings server_settings_;
std::unique_ptr<CtrlScript> ctrl_script_;
std::unique_ptr<CtrlScript> command_script_;
size_t req_id_;
};
} // namespace streamreader