/* * Copyright (c) 2010-2012 Postgres-XC Development Group */ #include #include #include "gtm/gtm_c.h" #include "gtm/libpq-fe.h" #include "gtm/gtm_client.h" #define client_log(x) printf x int main(int argc, char *argv[]) { int ii; GlobalTransactionId gxid[4000]; GTM_Conn *conn; char connect_string[100]; for (ii = 0; ii < 3; ii++) fork(); sprintf(connect_string, "host=localhost port=6666 node_name=one remote_type=%d", GTM_NODE_COORDINATOR); conn = PQconnectGTM(connect_string); if (conn == NULL) { client_log(("Error in connection\n")); exit(1); } for (ii = 0; ii < 20; ii++) { gxid[ii] = begin_transaction(conn, GTM_ISOLATION_RC); if (gxid[ii] != InvalidGlobalTransactionId) client_log(("Started a new transaction (GXID:%u)\n", gxid[ii])); else client_log(("BEGIN transaction failed for ii=%d\n", ii)); } for (ii = 0; ii < 5; ii++) { int jj; GTM_Snapshot snapshot = get_snapshot(conn, gxid[ii], true); if (snapshot != NULL) { client_log(("Snapshot: GXID %u, xmin=%u, xmax=%u\n", gxid[ii], snapshot->sn_xmin, snapshot->sn_xmax)); client_log(("xcnt=%d %s", snapshot->sn_xcnt, snapshot->sn_xcnt > 0 ? "xip=(" : "")); for (jj = 0; jj < snapshot->sn_xcnt; jj++) client_log(("%d%c ", snapshot->sn_xip[jj], ((jj + 1) == snapshot->sn_xcnt) ? ')' : ',')); client_log(("\n")); } } for (ii = 0; ii < 20; ii++) { if (!prepare_transaction(conn, gxid[ii])) client_log(("PREPARE successful (GXID:%u)\n", gxid[ii])); else client_log(("PREPARE failed (GXID:%u)\n", gxid[ii])); } for (ii = 0; ii < 20; ii++) { if (ii % 2 == 0) { if (!abort_transaction(conn, gxid[ii])) client_log(("ROLLBACK successful (GXID:%u)\n", gxid[ii])); else client_log(("ROLLBACK failed (GXID:%u)\n", gxid[ii])); } else { if (!commit_transaction(conn, gxid[ii])) client_log(("COMMIT successful (GXID:%u)\n", gxid[ii])); else client_log(("COMMIT failed (GXID:%u)\n", gxid[ii])); } } GTMPQfinish(conn); return 0; }