mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-22 22:32:22 +00:00
108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
#include "RabbitMQ.hpp"
|
|
|
|
#ifdef ZT_CONTROLLER_USE_LIBPQ
|
|
|
|
#include <amqp.h>
|
|
#include <amqp_tcp_socket.h>
|
|
#include <stdexcept>
|
|
#include <cstring>
|
|
|
|
namespace ZeroTier
|
|
{
|
|
|
|
RabbitMQ::RabbitMQ(MQConfig *cfg, const char *queueName)
|
|
: _mqc(cfg)
|
|
, _qName(queueName)
|
|
, _socket(NULL)
|
|
, _status(0)
|
|
{
|
|
}
|
|
|
|
RabbitMQ::~RabbitMQ()
|
|
{
|
|
amqp_channel_close(_conn, _channel, AMQP_REPLY_SUCCESS);
|
|
amqp_connection_close(_conn, AMQP_REPLY_SUCCESS);
|
|
amqp_destroy_connection(_conn);
|
|
}
|
|
|
|
void RabbitMQ::init()
|
|
{
|
|
struct timeval tval;
|
|
memset(&tval, 0, sizeof(struct timeval));
|
|
tval.tv_sec = 5;
|
|
|
|
fprintf(stderr, "Initializing RabbitMQ %s\n", _qName);
|
|
_conn = amqp_new_connection();
|
|
_socket = amqp_tcp_socket_new(_conn);
|
|
if (!_socket) {
|
|
throw std::runtime_error("Can't create socket for RabbitMQ");
|
|
}
|
|
|
|
_status = amqp_socket_open_noblock(_socket, _mqc->host, _mqc->port, &tval);
|
|
if (_status) {
|
|
throw std::runtime_error("Can't connect to RabbitMQ");
|
|
}
|
|
|
|
amqp_rpc_reply_t r = amqp_login(_conn, "/", 0, 131072, 0, AMQP_SASL_METHOD_PLAIN,
|
|
_mqc->username, _mqc->password);
|
|
if (r.reply_type != AMQP_RESPONSE_NORMAL) {
|
|
throw std::runtime_error("RabbitMQ Login Error");
|
|
}
|
|
|
|
static int chan = 0;
|
|
{
|
|
Mutex::Lock l(_chan_m);
|
|
_channel = ++chan;
|
|
}
|
|
amqp_channel_open(_conn, _channel);
|
|
r = amqp_get_rpc_reply(_conn);
|
|
if(r.reply_type != AMQP_RESPONSE_NORMAL) {
|
|
throw std::runtime_error("Error opening communication channel");
|
|
}
|
|
|
|
_q = amqp_queue_declare(_conn, _channel, amqp_cstring_bytes(_qName), 0, 0, 0, 0, amqp_empty_table);
|
|
r = amqp_get_rpc_reply(_conn);
|
|
if (r.reply_type != AMQP_RESPONSE_NORMAL) {
|
|
throw std::runtime_error("Error declaring queue " + std::string(_qName));
|
|
}
|
|
|
|
amqp_basic_consume(_conn, _channel, amqp_cstring_bytes(_qName), amqp_empty_bytes, 0, 1, 0, amqp_empty_table);
|
|
r = amqp_get_rpc_reply(_conn);
|
|
if (r.reply_type != AMQP_RESPONSE_NORMAL) {
|
|
throw std::runtime_error("Error consuming queue " + std::string(_qName));
|
|
}
|
|
fprintf(stderr, "RabbitMQ Init OK %s\n", _qName);
|
|
}
|
|
|
|
std::string RabbitMQ::consume()
|
|
{
|
|
amqp_rpc_reply_t res;
|
|
amqp_envelope_t envelope;
|
|
amqp_maybe_release_buffers(_conn);
|
|
|
|
struct timeval timeout;
|
|
timeout.tv_sec = 1;
|
|
timeout.tv_usec = 0;
|
|
|
|
res = amqp_consume_message(_conn, &envelope, &timeout, 0);
|
|
if (res.reply_type != AMQP_RESPONSE_NORMAL) {
|
|
if (res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION && res.library_error == AMQP_STATUS_TIMEOUT) {
|
|
// timeout waiting for message. Return empty string
|
|
return "";
|
|
} else {
|
|
throw std::runtime_error("Error getting message");
|
|
}
|
|
}
|
|
|
|
std::string msg(
|
|
(const char*)envelope.message.body.bytes,
|
|
envelope.message.body.len
|
|
);
|
|
amqp_destroy_envelope(&envelope);
|
|
return msg;
|
|
}
|
|
|
|
}
|
|
|
|
#endif // ZT_CONTROLLER_USE_LIBPQ
|