SWITCH_DECLARE(switch_pgsql_status_t) switch_pgsql_next_result_timed(switch_pgsql_handle_t *handle, switch_pgsql_result_t **result_out, int msec)
{
#ifdef SWITCH_HAVE_PGSQL
switch_pgsql_result_t *res;
switch_time_t start;
switch_time_t ctime;
unsigned int usec = msec * 1000;
char *err_str;
struct pollfd fds[2] = { {0} };
int poll_res = 0;
if(!handle) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "**BUG** Null handle passed to switch_pgsql_next_result.\n");
return SWITCH_PGSQL_FAIL;
}
/* Try to consume input that might be waiting right away */
if (PQconsumeInput(handle->con)) {
/* And check to see if we have a full result ready for reading */
if (PQisBusy(handle->con)) {
/* Wait for a result to become available, up to msec milliseconds */
start = switch_micro_time_now();
while((ctime = switch_micro_time_now()) - start <= usec) {
int wait_time = (usec - (ctime - start)) / 1000;
fds[0].fd = handle->sock;
fds[0].events |= POLLIN;
fds[0].events |= POLLERR;
fds[0].events |= POLLNVAL;
fds[0].events |= POLLHUP;
fds[0].events |= POLLPRI;
fds[0].events |= POLLRDNORM;
fds[0].events |= POLLRDBAND;
/* Wait for the PostgreSQL socket to be ready for data reads. */
if ((poll_res = poll(&fds[0], 1, wait_time)) > 0 ) {
if (fds[0].revents & POLLHUP || fds[0].revents & POLLNVAL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "PGSQL socket closed or invalid while waiting for result for query (%s)\n", handle->sql);
goto error;
} else if (fds[0].revents & POLLERR) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Poll error trying to read PGSQL socket for query (%s)\n", handle->sql);
goto error;
} else if (fds[0].revents & POLLIN || fds[0].revents & POLLPRI || fds[0].revents & POLLRDNORM || fds[0].revents & POLLRDBAND) {
/* Then try to consume any input waiting. */
if (PQconsumeInput(handle->con)) {
if (PQstatus(handle->con) == CONNECTION_BAD) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Connection terminated while waiting for result.\n");
handle->state = SWITCH_PGSQL_STATE_ERROR;
goto error;
}
/* And check to see if we have a full result ready for reading */
if (!PQisBusy(handle->con)) {
/* If we can pull a full result without blocking, then break this loop */
break;
}
} else {
/* If we had an error trying to consume input, report it and cancel the query. */
err_str = switch_pgsql_handle_get_error(handle);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "An error occurred trying to consume input for query (%s): %s\n", handle->sql, err_str);
switch_safe_free(err_str);
switch_pgsql_cancel(handle);
goto error;
}
}
} else if (poll_res == -1) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Poll failed trying to read PGSQL socket for query (%s)\n", handle->sql);
goto error;
}
}
/* If we broke the loop above because of a timeout, report that and cancel the query. */
if (ctime - start > usec) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Query (%s) took too long to complete or database not responding.\n", handle->sql);
switch_pgsql_cancel(handle);
goto error;
}
}
} else {
/* If we had an error trying to consume input, report it and cancel the query. */
err_str = switch_pgsql_handle_get_error(handle);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "An error occurred trying to consume input for query (%s): %s\n", handle->sql, err_str);
switch_safe_free(err_str);
/* switch_pgsql_cancel(handle); */
goto error;
}
/* At this point, we know we can read a full result without blocking. */
if(!(res = malloc(sizeof(switch_pgsql_result_t)))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Malloc failed!\n");
goto error;
}
memset(res, 0, sizeof(switch_pgsql_result_t));
res->result = PQgetResult(handle->con);
if (res->result) {
*result_out = res;
res->status = PQresultStatus(res->result);
switch(res->status) {
#if POSTGRESQL_MAJOR_VERSION >= 9 && POSTGRESQL_MINOR_VERSION >= 2
case PGRES_SINGLE_TUPLE:
/* Added in PostgreSQL 9.2 */
#endif
case PGRES_TUPLES_OK:
{
res->rows = PQntuples(res->result);
handle->affected_rows = res->rows;
res->cols = PQnfields(res->result);
}
break;
#if POSTGRESQL_MAJOR_VERSION >= 9 && POSTGRESQL_MINOR_VERSION >= 1
case PGRES_COPY_BOTH:
/* Added in PostgreSQL 9.1 */
#endif
case PGRES_COPY_OUT:
case PGRES_COPY_IN:
case PGRES_COMMAND_OK:
break;
case PGRES_EMPTY_QUERY:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_EMPTY_QUERY\n", handle->sql);
case PGRES_BAD_RESPONSE:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_BAD_RESPONSE\n", handle->sql);
case PGRES_NONFATAL_ERROR:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_NONFATAL_ERROR\n", handle->sql);
case PGRES_FATAL_ERROR:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_FATAL_ERROR\n", handle->sql);
res->err = PQresultErrorMessage(res->result);
goto error;
break;
}
} else {
free(res);
res = NULL;
*result_out = NULL;
}
return SWITCH_PGSQL_SUCCESS;
error:
/* Make sure the failed connection does not have any transactions marked as in progress */
switch_pgsql_flush(handle);
/* Try to reconnect to the DB if we were dropped */
db_is_up(handle);
#endif
return SWITCH_PGSQL_FAIL;
}
SWITCH_DECLARE(switch_pgsql_status_t) switch_pgsql_next_result_timed(switch_pgsql_handle_t *handle, switch_pgsql_result_t **result_out, int msec)
{
#ifdef SWITCH_HAVE_PGSQL
switch_pgsql_result_t *res;
switch_time_t start;
switch_time_t ctime;
unsigned int usec = msec * 1000;
char *err_str;
struct pollfd fds[2] = { {0} };
int poll_res = 0;
if(!handle) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "**BUG** Null handle passed to switch_pgsql_next_result.\n");
return SWITCH_PGSQL_FAIL;
}
/* Try to consume input that might be waiting right away */
if (PQconsumeInput(handle->con)) {
/* And check to see if we have a full result ready for reading */
if (PQisBusy(handle->con)) {
/* Wait for a result to become available, up to msec milliseconds */
start = switch_time_now();
while((ctime = switch_micro_time_now()) - start <= usec) {
int wait_time = (usec - (ctime - start)) / 1000;
fds[0].fd = handle->sock;
fds[0].events |= POLLIN;
fds[0].events |= POLLERR;
/* Wait for the PostgreSQL socket to be ready for data reads. */
if ((poll_res = poll(&fds[0], 1, wait_time)) > -1 ) {
if (fds[0].revents & POLLIN) {
/* Then try to consume any input waiting. */
if (PQconsumeInput(handle->con)) {
/* And check to see if we have a full result ready for reading */
if (!PQisBusy(handle->con)) {
/* If we can pull a full result without blocking, then break this loop */
break;
}
} else {
/* If we had an error trying to consume input, report it and cancel the query. */
err_str = switch_pgsql_handle_get_error(handle);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "An error occurred trying to consume input for query (%s): %s\n", handle->sql, err_str);
switch_safe_free(err_str);
switch_pgsql_cancel(handle);
goto error;
}
} else if (fds[0].revents & POLLERR) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Poll error trying to read PGSQL socket for query (%s)\n", handle->sql);
goto error;
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Poll failed trying to read PGSQL socket for query (%s)\n", handle->sql);
goto error;
}
}
/* If we broke the loop above because of a timeout, report that and cancel the query. */
if (ctime - start > usec) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Query (%s) took too long to complete or database not responding.\n", handle->sql);
switch_pgsql_cancel(handle);
goto error;
}
}
} else {
/* If we had an error trying to consume input, report it and cancel the query. */
err_str = switch_pgsql_handle_get_error(handle);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "An error occurred trying to consume input for query (%s): %s\n", handle->sql, err_str);
switch_safe_free(err_str);
switch_pgsql_cancel(handle);
goto error;
}
/* At this point, we know we can read a full result without blocking. */
if(!(res = malloc(sizeof(switch_pgsql_result_t)))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Malloc failed!\n");
goto error;
}
memset(res, 0, sizeof(switch_pgsql_result_t));
res->result = PQgetResult(handle->con);
if (res->result) {
*result_out = res;
res->status = PQresultStatus(res->result);
switch(res->status) {
case PGRES_TUPLES_OK:
{
res->rows = PQntuples(res->result);
handle->affected_rows = res->rows;
res->cols = PQnfields(res->result);
}
break;
case PGRES_COPY_OUT:
case PGRES_COPY_IN:
case PGRES_COMMAND_OK:
break;
case PGRES_EMPTY_QUERY:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_EMPTY_QUERY\n", handle->sql);
case PGRES_BAD_RESPONSE:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_BAD_RESPONSE\n", handle->sql);
case PGRES_NONFATAL_ERROR:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_NONFATAL_ERROR\n", handle->sql);
case PGRES_FATAL_ERROR:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Query (%s) returned PGRES_FATAL_ERROR\n", handle->sql);
res->err = PQresultErrorMessage(res->result);
goto error;
break;
}
} else {
free(res);
res = NULL;
*result_out = NULL;
goto error;
}
return SWITCH_PGSQL_SUCCESS;
error:
#endif
return SWITCH_PGSQL_FAIL;
}
