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Extend master failure error message

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The error now describes the failure mode in more detail. This should make
post mortem analysis of failed connections a lot easier.
This commit is contained in:
Markus Mäkelä 2019-01-09 20:05:38 +02:00
parent 78ea12b4c1
commit 147f0bb656
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GPG Key ID: 72D48FCE664F7B19
1 changed files with 5 additions and 1 deletions
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6
server/modules/routing/readwritesplit/rwsplitsession.cc
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@ -877,6 +877,7 @@ void RWSplitSession::handleError(GWBUF* errmsgbuf,
{
case ERRACT_NEW_CONNECTION:
{
std::string errmsg;
bool can_continue = false;
if (m_current_master && m_current_master->in_use() && m_current_master == backend)
@ -896,6 +897,7 @@ void RWSplitSession::handleError(GWBUF* errmsgbuf,
* can't be sure whether it was executed or not. In this
* case the safest thing to do is to close the client
* connection. */
errmsg += " Lost connection to master server while connection was idle.";
if (m_config.master_failure_mode != RW_FAIL_INSTANTLY)
{
can_continue = true;
@ -906,6 +908,7 @@ void RWSplitSession::handleError(GWBUF* errmsgbuf,
// We were expecting a response but we aren't going to get one
mxb_assert(m_expected_responses > 0);
m_expected_responses--;
errmsg += " Lost connection to master server while waiting for a result.";
if (can_retry_query())
{
@ -925,6 +928,7 @@ void RWSplitSession::handleError(GWBUF* errmsgbuf,
if (session_trx_is_active(session) && m_otrx_state == OTRX_INACTIVE)
{
can_continue = start_trx_replay();
errmsg += " A transaction is active and cannot be replayed.";
}
if (!can_continue)
@ -939,7 +943,7 @@ void RWSplitSession::handleError(GWBUF* errmsgbuf,
}
else
{
MXS_ERROR("Lost connection to the master server, closing session.");
MXS_ERROR("Lost connection to the master server, closing session.%s", errmsg.c_str());
}
}