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Fixed tcp sink

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This commit is contained in:
gabime 2020-02-10 17:13:04 +02:00
parent 7f8169f0da
commit ad4fb1cf84
1 changed files with 70 additions and 21 deletions
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89
include/spdlog/sinks/tcp_sink.h
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@ -17,25 +17,16 @@ template<typename Mutex>
class tcp_sink : public spdlog::sinks::base_sink<Mutex>
{
public:
tcp_sink(std::string address, int port)
tcp_sink(std::string host, int port)
{
if ((sock_ = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
SPDLOG_THROW(spdlog::spdlog_ex("Socket creation error", errno));
}
struct hostent *he = gethostbyname(address.c_str());
if (he == nullptr)
{
SPDLOG_THROW(spdlog::spdlog_ex("gethostbyname failed", errno));
sock_ = connect_to(host, port);
}
serv_addr_.sin_family = AF_INET;
serv_addr_.sin_addr = *(struct in_addr *)(he->h_addr);
serv_addr_.sin_port = ::htons(static_cast<uint16_t>(port));
if (connect(sock_, (struct sockaddr *)&serv_addr_, sizeof(serv_addr_)) < 0)
~tcp_sink()
{
SPDLOG_THROW(spdlog::spdlog_ex("Connection Failed", errno));
if (sock_ != -1)
{
::close(sock_);
}
}
@ -44,20 +35,78 @@ protected:
{
spdlog::memory_buf_t formatted;
spdlog::sinks::base_sink<Mutex>::formatter_->format(msg, formatted);
auto res = ::send(sock_, formatted.data(), formatted.size(), 0);
if (res < 0)
size_t bytes_sent = 0;
while (bytes_sent < formatted.size())
{
SPDLOG_THROW(spdlog::spdlog_ex("Message Send Failed", errno));
auto write_result = ::write(sock_, formatted.data(), formatted.size() - bytes_sent);
if (write_result < 0)
{
SPDLOG_THROW(spdlog::spdlog_ex("write(2) failed", errno));
}
if (write_result == 0) // (probably should not happen but in any case..)
{
break;
}
bytes_sent += static_cast<size_t>(write_result);
}
}
void flush_() override {}
private:
// try to connect and return socket fd or throw on failure
int connect_to(const std::string &host, int port)
{
struct addrinfo hints;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_INET; // IPv4
hints.ai_socktype = SOCK_STREAM; // TCP
hints.ai_flags = AI_NUMERICSERV; // port passed as as numeric value
hints.ai_protocol = 0;
auto port_str = std::to_string(port);
struct addrinfo *addrinfo_result;
auto rv = ::getaddrinfo(host.c_str(), port_str.c_str(), &hints, &addrinfo_result);
if (rv != 0)
{
auto msg = fmt::format("::getaddrinfo failed: {}", gai_strerror(rv));
SPDLOG_THROW(spdlog::spdlog_ex(msg));
}
// Try each address until we successfully connect(2).
int socket_rv = -1;
int last_errno = 0;
for (auto *rp = addrinfo_result; rp != nullptr; rp = rp->ai_next)
{
socket_rv = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (socket_rv == -1)
{
last_errno = errno;
continue;
}
rv = ::connect(socket_rv, rp->ai_addr, rp->ai_addrlen);
if (rv == 0)
{
break;
}
else
{
socket_rv = -1;
last_errno = errno;
::close(socket_rv);
}
}
::freeaddrinfo(addrinfo_result);
if (socket_rv == -1)
{
SPDLOG_THROW(spdlog::spdlog_ex("::connect failed", last_errno));
}
return socket_rv;
}
private:
int sock_;
struct sockaddr_in serv_addr_;
int sock_ = -1;
};
using tcp_sink_mt = tcp_sink<std::mutex>;