/*
* appendPQExpBuffer
*
* Format text data under the control of fmt (an sprintf-like format string)
* and append it to whatever is already in str. More space is allocated
* to str if necessary. This is sort of like a combination of sprintf and
* strcat.
*/
void
appendPQExpBuffer(PQExpBuffer str, const char *fmt,...)
{
va_list args;
bool done;
if (PQExpBufferBroken(str))
return; /* already failed */
/* Loop in case we have to retry after enlarging the buffer. */
do
{
va_start(args, fmt);
done = appendPQExpBufferVA(str, fmt, args);
va_end(args);
} while (!done);
}
/*
* NonThread version of cdbdisp_appendMessage.
*
* It's safe to use palloc/pfree or elog/ereport.
*/
void
cdbdisp_appendMessageNonThread(CdbDispatchResult * dispatchResult,
int elevel, const char *fmt, ...)
{
va_list args;
int msgoff;
/*
* Remember first error.
*/
cdbdisp_seterrcode(ERRCODE_GP_INTERCONNECTION_ERROR, -1, dispatchResult);
/*
* Allocate buffer if first message.
* Insert newline between previous message and new one.
*/
Assert(dispatchResult->error_message != NULL);
oneTrailingNewlinePQ(dispatchResult->error_message);
msgoff = dispatchResult->error_message->len;
/*
* Format the message and append it to the buffer.
*/
va_start(args, fmt);
appendPQExpBufferVA(dispatchResult->error_message, fmt, args);
va_end(args);
/*
* Display the message on stderr for debugging, if requested.
* This helps to clarify the actual timing of threaded events.
*/
if (elevel >= log_min_messages)
{
oneTrailingNewlinePQ(dispatchResult->error_message);
elog(LOG, "%s", dispatchResult->error_message->data + msgoff);
}
/*
* In case the caller wants to hand the buffer to ereport(),
* follow the ereport() convention of not ending with a newline.
*/
noTrailingNewlinePQ(dispatchResult->error_message);
}
