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Acknowledge one-way commands immediately

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The Backend class response state tracking was not updated when a one-way
command was executed. This caused the logic in handleError to break if a
master was executing a command that wouldn't create a response.
This commit is contained in:
Markus Mäkelä
2018-06-12 23:49:47 +03:00
parent 1ea94501e4
commit d2e7be2ca0
1 changed files with 22 additions and 9 deletions
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31
server/modules/routing/readwritesplit/rwsplit_route_stmt.cc
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@ -403,6 +403,10 @@ bool RWSplitSession::route_session_write(GWBUF *querybuf, uint8_t command, uint3
{
m_expected_responses++;
}
else
{
backend->ack_write();
}
MXS_INFO("Route query to %s: %s \t%s",
backend->is_master() ? "master" : "slave",
@ -1006,19 +1010,28 @@ bool RWSplitSession::handle_got_target(GWBUF* querybuf, SRWBackend& target, bool
atomic_add_uint64(&m_router->stats().n_queries, 1);
atomic_add_uint64(&target->server()->stats.packets, 1);
if (!m_qc.large_query() && response == mxs::Backend::EXPECT_RESPONSE)
if (!m_qc.large_query())
{
/** The server will reply to this command */
ss_dassert(target->get_reply_state() == REPLY_STATE_DONE);
target->set_reply_state(REPLY_STATE_START);
m_expected_responses++;
if (m_qc.load_data_state() == QueryClassifier::LOAD_DATA_END)
if (response == mxs::Backend::EXPECT_RESPONSE)
{
/** The final packet in a LOAD DATA LOCAL INFILE is an empty packet
* to which the server responds with an OK or an ERR packet */
ss_dassert(gwbuf_length(querybuf) == 4);
m_qc.set_load_data_state(QueryClassifier::LOAD_DATA_INACTIVE);
/** The server will reply to this command */
target->set_reply_state(REPLY_STATE_START);
m_expected_responses++;
if (m_qc.load_data_state() == QueryClassifier::LOAD_DATA_END)
{
/** The final packet in a LOAD DATA LOCAL INFILE is an empty packet
* to which the server responds with an OK or an ERR packet */
ss_dassert(gwbuf_length(querybuf) == 4);
m_qc.set_load_data_state(QueryClassifier::LOAD_DATA_INACTIVE);
}
}
else
{
// The server won't respond, mark it as done
target->ack_write();
}
}