Line data Source code
1 : /**
2 : *
3 : * @file ZmqSender.cpp ZmqSender messaging class definitions
4 : *
5 : * This is part of the DUNE DAQ Application Framework, copyright 2020.
6 : * Licensing/copyright details are in the COPYING file that you should have
7 : * received with this code.
8 : */
9 :
10 : #include "ipm/Sender.hpp"
11 : #include "ipm/ZmqContext.hpp"
12 :
13 : #include "logging/Logging.hpp"
14 : #include "zmq.hpp"
15 :
16 : #include <string>
17 : #include <vector>
18 :
19 : namespace dunedaq::ipm {
20 : class ZmqSender : public Sender
21 : {
22 : public:
23 26 : ZmqSender()
24 26 : : m_socket(ZmqContext::instance().GetContext(), zmq::socket_type::push)
25 : {
26 26 : }
27 :
28 52 : ~ZmqSender()
29 26 : {
30 : // Probably (cpp)zmq does this in the socket dtor anyway, but I guess it doesn't hurt to be explicit
31 26 : if (m_connection_info.connection_string != "" && m_socket_connected) {
32 24 : try {
33 48 : TLOG_DEBUG(TLVL_ZMQSENDER_DESTRUCTOR)
34 24 : << m_connection_info.connection_name << ": Disconnecting socket from " << m_connection_info.connection_string;
35 :
36 :
37 24 : m_socket.disconnect(m_connection_info.connection_string);
38 24 : m_socket_connected = false;
39 0 : } catch (zmq::error_t const& err) {
40 0 : ers::error(ZmqOperationError(ERS_HERE,
41 0 : m_connection_info.connection_name,
42 : "disconnect",
43 : "send",
44 0 : err.what(),
45 0 : m_connection_info.connection_string));
46 0 : }
47 : }
48 26 : m_socket.close();
49 52 : }
50 :
51 20037 : bool can_send() const noexcept override { return m_socket_connected; }
52 27 : std::string connect_for_sends(const ConnectionInfo& connection_info) override
53 : {
54 27 : m_connection_info = connection_info;
55 27 : try {
56 27 : m_socket.set(zmq::sockopt::sndtimeo, 0); // Return immediately if we can't send
57 0 : } catch (zmq::error_t const& err) {
58 0 : throw ZmqOperationError(ERS_HERE,
59 0 : m_connection_info.connection_name,
60 : "set timeout",
61 : "send",
62 0 : err.what(),
63 0 : m_connection_info.connection_string);
64 0 : }
65 :
66 27 : auto hwm = connection_info.capacity;
67 27 : if (hwm > 0) {
68 0 : try {
69 0 : m_socket.set(zmq::sockopt::sndhwm, hwm);
70 0 : } catch (zmq::error_t const& err) {
71 0 : throw ZmqOperationError(ERS_HERE,
72 0 : m_connection_info.connection_name,
73 : "set hwm",
74 : "send",
75 0 : err.what(),
76 0 : m_connection_info.connection_string);
77 0 : }
78 : }
79 :
80 27 : auto connection_string = m_connection_info.connection_string;
81 :
82 27 : TLOG_DEBUG(TLVL_CONNECTIONSTRING) << "Connection String is " << connection_string;
83 27 : try {
84 27 : m_socket.set(zmq::sockopt::immediate, 1); // Don't queue messages to incomplete connections
85 0 : } catch (zmq::error_t const& err) {
86 0 : throw ZmqOperationError(
87 0 : ERS_HERE, m_connection_info.connection_name, "set immediate mode", "send", err.what(), connection_string);
88 0 : }
89 :
90 27 : try {
91 27 : m_socket.connect(connection_string);
92 24 : m_connection_info.connection_string = m_socket.get(zmq::sockopt::last_endpoint);
93 24 : m_socket_connected = true;
94 3 : } catch (zmq::error_t const& err) {
95 3 : ers::error(ZmqOperationError(
96 6 : ERS_HERE, m_connection_info.connection_name, "connect", "send", err.what(), connection_string));
97 3 : }
98 :
99 27 : if (!m_socket_connected) {
100 3 : throw ZmqOperationError(ERS_HERE,
101 3 : m_connection_info.connection_name,
102 : "connect",
103 : "send",
104 : "Operation failed for all resolved connection strings",
105 6 : "");
106 : }
107 48 : return m_connection_info.connection_string;
108 27 : }
109 :
110 : protected:
111 20028 : bool send_(const void* message,
112 : int N,
113 : const duration_t& timeout,
114 : std::string const& topic,
115 : bool no_tmoexcept_mode) override
116 : {
117 20028 : TLOG_DEBUG(TLVL_ZMQSENDER_SEND_START)
118 20028 : << m_connection_info.connection_name << ": Starting send of " << N << " bytes";
119 20028 : auto start_time = std::chrono::steady_clock::now();
120 20028 : zmq::send_result_t res{};
121 9736686 : do {
122 :
123 9736686 : zmq::message_t topic_msg(topic.c_str(), topic.size());
124 9736686 : try {
125 9736686 : res = m_socket.send(topic_msg, zmq::send_flags::sndmore);
126 0 : } catch (zmq::error_t const& err) {
127 0 : throw ZmqSendError(ERS_HERE, m_connection_info.connection_name, err.what(), topic.size(), topic);
128 0 : }
129 :
130 9736686 : if (!res || res != topic.size()) {
131 9716659 : TLOG_DEBUG(TLVL_ZMQSENDER_SEND_ERR) << m_connection_info.connection_name << ": Unable to send message";
132 9716659 : continue;
133 9716659 : }
134 :
135 20027 : zmq::message_t msg(message, N);
136 20027 : try {
137 20027 : res = m_socket.send(msg, zmq::send_flags::none);
138 0 : } catch (zmq::error_t const& err) {
139 0 : throw ZmqSendError(ERS_HERE, m_connection_info.connection_name, err.what(), N, topic);
140 0 : }
141 :
142 20027 : if (!res && timeout > duration_t::zero()) {
143 0 : usleep(1000);
144 : }
145 19493400 : } while (std::chrono::duration_cast<duration_t>(std::chrono::steady_clock::now() - start_time) < timeout && !res);
146 :
147 20028 : if (!res && !no_tmoexcept_mode) {
148 1 : throw SendTimeoutExpired(ERS_HERE, m_connection_info.connection_name, timeout.count());
149 : }
150 :
151 20027 : TLOG_DEBUG(TLVL_ZMQSENDER_SEND_END) << m_connection_info.connection_name << ": Completed send of " << N
152 20027 : << " bytes";
153 20027 : return res && res == N;
154 : }
155 :
156 : private:
157 : zmq::socket_t m_socket;
158 : bool m_socket_connected{ false };
159 : };
160 :
161 : } // namespace dunedaq::ipm
162 :
163 26 : DEFINE_DUNE_IPM_SENDER(dunedaq::ipm::ZmqSender)
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