/* ----------------
* EndCommand - clean up the destination at end of command
* ----------------
*/
void
EndCommand(const char *commandTag, CommandDest dest)
{
StringInfoData buf;
if (Gp_role == GP_ROLE_DISPATCH)
{
/*
* Just before a successful reply, let's see if the DTM has
* phase 2 retry work.
*/
doDtxPhase2Retry();
}
switch (dest)
{
case DestRemote:
case DestRemoteExecute:
if (Gp_role == GP_ROLE_EXECUTE && Gp_is_writer)
{
/*
* Extra information that indicates if the transaction made
* updates.
*/
sendQEDetails();
pq_beginmessage(&buf, 'g');
pq_sendstring(&buf, commandTag);
AddQEWriterTransactionInfo(&buf);
pq_endmessage(&buf);
}
else if (Gp_role == GP_ROLE_EXECUTE)
{
sendQEDetails();
pq_beginmessage(&buf, 'C');
pq_sendstring(&buf, commandTag);
pq_endmessage(&buf);
}
else
pq_puttextmessage('C', commandTag);
break;
case DestNone:
case DestDebug:
case DestSPI:
case DestTuplestore:
case DestIntoRel:
case DestCopyOut:
break;
}
}
/* ----------------
* ReadyForQuery_QE - tell dest that we are ready for a new query that
* includes QE Writer transaction information.
*
* ----------------
*
* NOTE: this is GPDB specific, and shouldn't fall inside the codepath
* of QD->client communication.
*
*/
void
ReadyForQuery_QEWriter(CommandDest dest)
{
switch (dest)
{
case DestRemote:
case DestRemoteExecute:
if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 3)
{
StringInfoData buf;
sendQEDetails();
pq_beginmessage(&buf, 'z');
pq_sendbyte(&buf, TransactionBlockStatusCode());
AddQEWriterTransactionInfo(&buf);
pq_endmessage(&buf);
}
else if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
pq_putemptymessage('Z');
/* Flush output at end of cycle in any case. */
pq_flush();
break;
case DestNone:
case DestDebug:
case DestSPI:
case DestTuplestore:
case DestIntoRel:
case DestCopyOut:
break;
}
}
/* ----------------
* EndCommand - clean up the destination at end of command
* ----------------
*/
void
EndCommand(const char *commandTag, CommandDest dest)
{
StringInfoData buf;
switch (dest)
{
case DestRemote:
case DestRemoteExecute:
if (Gp_role == GP_ROLE_EXECUTE)
{
sendQEDetails();
pq_beginmessage(&buf, 'C');
pq_sendstring(&buf, commandTag);
pq_endmessage(&buf);
}
else
pq_puttextmessage('C', commandTag);
break;
case DestNone:
case DestDebug:
case DestSPI:
case DestTuplestore:
case DestIntoRel:
case DestCopyOut:
break;
}
}
/* ----------------
* EndCommand - clean up the destination at end of command
* ----------------
*/
void
EndCommand(const char *commandTag, CommandDest dest)
{
StringInfoData buf;
if (Gp_role == GP_ROLE_DISPATCH)
{
/*
* Just before a successful reply, let's see if the DTM has
* phase 2 retry work.
*/
doDtxPhase2Retry();
}
switch (dest)
{
case DestRemote:
case DestRemoteExecute:
/*
* We assume the commandTag is plain ASCII and therefore
* requires no encoding conversion.
*/
if (Gp_role == GP_ROLE_EXECUTE)
{
sendQEDetails();
pq_beginmessage(&buf, 'C');
pq_send_ascii_string(&buf, commandTag);
pq_endmessage(&buf);
}
else
pq_putmessage('C', commandTag, strlen(commandTag) + 1);
break;
case DestNone:
case DestDebug:
case DestSPI:
case DestTuplestore:
case DestIntoRel:
case DestCopyOut:
break;
}
}
