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74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#include <Poco/Net/NetException.h>
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#include <IO/ReadBufferFromPocoSocket.h>
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#include <Common/Exception.h>
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#include <Common/NetException.h>
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#include <Common/Stopwatch.h>
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namespace ProfileEvents
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{
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extern const Event NetworkReceiveElapsedMicroseconds;
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}
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NETWORK_ERROR;
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extern const int SOCKET_TIMEOUT;
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extern const int CANNOT_READ_FROM_SOCKET;
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}
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bool ReadBufferFromPocoSocket::nextImpl()
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{
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ssize_t bytes_read = 0;
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Stopwatch watch;
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/// Add more details to exceptions.
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try
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{
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bytes_read = socket.impl()->receiveBytes(internal_buffer.begin(), internal_buffer.size());
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}
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catch (const Poco::Net::NetException & e)
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{
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throw NetException(e.displayText() + ", while reading from socket (" + peer_address.toString() + ")", ErrorCodes::NETWORK_ERROR);
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}
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catch (const Poco::TimeoutException &)
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{
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throw NetException("Timeout exceeded while reading from socket (" + peer_address.toString() + ")", ErrorCodes::SOCKET_TIMEOUT);
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}
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catch (const Poco::IOException & e)
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{
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throw NetException(e.displayText() + ", while reading from socket (" + peer_address.toString() + ")", ErrorCodes::NETWORK_ERROR);
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}
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if (bytes_read < 0)
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throw NetException("Cannot read from socket (" + peer_address.toString() + ")", ErrorCodes::CANNOT_READ_FROM_SOCKET);
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/// NOTE: it is quite inaccurate on high loads since the thread could be replaced by another one
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ProfileEvents::increment(ProfileEvents::NetworkReceiveElapsedMicroseconds, watch.elapsedMicroseconds());
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if (bytes_read)
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working_buffer.resize(bytes_read);
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else
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return false;
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return true;
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}
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ReadBufferFromPocoSocket::ReadBufferFromPocoSocket(Poco::Net::Socket & socket_, size_t buf_size)
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: BufferWithOwnMemory<ReadBuffer>(buf_size), socket(socket_), peer_address(socket.peerAddress())
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{
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}
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bool ReadBufferFromPocoSocket::poll(size_t timeout_microseconds)
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{
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return offset() != buffer().size() || socket.poll(timeout_microseconds, Poco::Net::Socket::SELECT_READ | Poco::Net::Socket::SELECT_ERROR);
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}
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}
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