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Snapshot of failure tolerance changes.

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Added a lot of logging to error, trace and message logs which should help the user to handle errors which can't be automatically resolved, like attempt to use nonexisting database.
This commit is contained in:
VilhoRaatikka
2014-06-06 23:32:04 +03:00
parent 7bca4e383f
commit 7e6cb7afc2
19 changed files with 518 additions and 169 deletions
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29
server/core/dcb.c
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@ -559,7 +559,8 @@ int rc;
dcb->fd = fd;
/** Copy status field to DCB */
dcb->dcb_server_status = server->status;
ss_debug(dcb->dcb_port = server->port;)
/*<
* backend_dcb is connected to backend server, and once backend_dcb
* is added to poll set, authentication takes place as part of
@ -937,7 +938,8 @@ int above_water;
above_water = (dcb->low_water && dcb->writeqlen > dcb->low_water) ? 1 : 0;
spinlock_acquire(&dcb->writeqlock);
if (dcb->writeq)
if (dcb->writeq)
{
int len;
@ -996,16 +998,17 @@ int above_water;
}
spinlock_release(&dcb->writeqlock);
atomic_add(&dcb->writeqlen, -n);
/* The write queue has drained, potentially need to call a callback function */
/* The write queue has drained, potentially need to call a callback function */
if (dcb->writeq == NULL)
dcb_call_callback(dcb, DCB_REASON_DRAINED);
if (above_water && dcb->writeqlen < dcb->low_water)
if (above_water && dcb->writeqlen < dcb->low_water)
{
atomic_add(&dcb->stats.n_low_water, 1);
dcb_call_callback(dcb, DCB_REASON_LOW_WATER);
}
return n;
}
@ -1030,7 +1033,8 @@ dcb_close(DCB *dcb)
* dcb_close may be called for freshly created dcb, in which case
* it only needs to be freed.
*/
if (dcb->state == DCB_STATE_ALLOC) {
if (dcb->state == DCB_STATE_ALLOC)
{
dcb_set_state(dcb, DCB_STATE_DISCONNECTED, NULL);
dcb_final_free(dcb);
return;
@ -1047,6 +1051,16 @@ dcb_close(DCB *dcb)
ss_dassert(dcb->state == DCB_STATE_NOPOLLING ||
dcb->state == DCB_STATE_ZOMBIE);
#if defined(ERRHANDLE)
/**
* close protocol and router session
*/
if (dcb->func.close != NULL)
{
dcb->func.close(dcb);
}
#endif
dcb_call_callback(dcb, DCB_REASON_CLOSE);
@ -1068,7 +1082,8 @@ dcb_close(DCB *dcb)
STRDCBSTATE(dcb->state))));
}
if (dcb->state == DCB_STATE_NOPOLLING) {
if (dcb->state == DCB_STATE_NOPOLLING)
{
dcb_add_to_zombieslist(dcb);
}
}