source/tmsrv/xasrvutil.c

0001 /**
0002  * @brief Tmsrv server - transaction monitor, XA util part
0003  *
0004  * @file xasrvutil.c
0005  */
0006 /* -----------------------------------------------------------------------------
0007  * Enduro/X Middleware Platform for Distributed Transaction Processing
0008  * Copyright (C) 2009-2016, ATR Baltic, Ltd. All Rights Reserved.
0009  * Copyright (C) 2017-2023, Mavimax, Ltd. All Rights Reserved.
0010  * This software is released under one of the following licenses:
0011  * AGPL (with Java and Go exceptions) or Mavimax's license for commercial use.
0012  * See LICENSE file for full text.
0013  * -----------------------------------------------------------------------------
0014  * AGPL license:
0015  *
0016  * This program is free software; you can redistribute it and/or modify it under
0017  * the terms of the GNU Affero General Public License, version 3 as published
0018  * by the Free Software Foundation;
0019  *
0020  * This program is distributed in the hope that it will be useful, but WITHOUT ANY
0021  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
0022  * PARTICULAR PURPOSE. See the GNU Affero General Public License, version 3
0023  * for more details.
0024  *
0025  * You should have received a copy of the GNU Affero General Public License along
0026  * with this program; if not, write to the Free Software Foundation, Inc.,
0027  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
0028  *
0029  * -----------------------------------------------------------------------------
0030  * A commercial use license is available from Mavimax, Ltd
0031  * contact@mavimax.com
0032  * -----------------------------------------------------------------------------
0033  */
0034 #include <stdio.h>
0035 #include <stdlib.h>
0036 #include <string.h>
0037 #include <errno.h>
0038 #include <regex.h>
0039 #include <utlist.h>
0040
0041 #include <ndebug.h>
0042 #include <atmi.h>
0043 #include <atmi_int.h>
0044 #include <typed_buf.h>
0045 #include <ndrstandard.h>
0046 #include <ubf.h>
0047 #include <Exfields.h>
0048
0049 #include <exnet.h>
0050 #include <ndrxdcmn.h>
0051
0052 #include "tmsrv.h"
0053 #include "../libatmisrv/srv_int.h"
0054 #include <xa_cmn.h>
0055 #include <atmi_int.h>
0056 /*---------------------------Externs------------------------------------*/
0057 /*---------------------------Macros-------------------------------------*/
0058 /*---------------------------Enums--------------------------------------*/
0059 /*---------------------------Typedefs-----------------------------------*/
0060 /*---------------------------Globals------------------------------------*/
0061 /*---------------------------Statics------------------------------------*/
0062 exprivate MUTEX_LOCKDECL(M_xid_gen_lock); /* Thread locking for xid generation    */
0063 /*---------------------------Prototypes---------------------------------*/
0064
0065 /**
0066  * Generate new transaction id
0067  * @param xid
0068  */
0069 expublic void atmi_xa_new_xid(XID *xid)
0070 {
0071     exuuid_t uuid_val;
0072     atmi_lib_env_t *atmi_env = ndrx_get_G_atmi_env();
0073     unsigned char rmid =  (unsigned char)atmi_env->xa_rmid;
0074     short node_id = (short) htons(G_tmsrv_cfg.vnodeid);
0075     short srv_id = (short) htons(G_srv_id);
0076
0077     /* Do the locking, so that we get unique xids... */
0078     MUTEX_LOCK_V(M_xid_gen_lock);
0079
0080     /* we will include here following additional data:
0081      * - cluster node_id
0082      * - endurox server_id
0083      */
0084
0085     xid->formatID = NDRX_XID_FORMAT_ID;
0086
0087     /* Oracle JDBC driver requires max lenght xid otherwise it gives
0088      * java.sql.SQLException: ORA-25352: no current transaction
0089      */
0090     /* xid->gtrid_length = sizeof(exuuid_t); */
0091     /* xid->bqual_length = sizeof(unsigned char) + sizeof(short) + sizeof(short); */
0092
0093     xid->gtrid_length = MAXGTRIDSIZE;
0094     xid->bqual_length = MAXBQUALSIZE;
0095
0096     memset(xid->data, 0, XIDDATASIZE); /* this is not necessary, but... */
0097     ndrx_cid_generate((unsigned char)node_id, uuid_val);
0098     memcpy(xid->data, uuid_val, sizeof(exuuid_t));
0099
0100     /*Bug #228 - using incorrect rmid field was using short from env instead of rmid (uchar)*/
0101     NDRX_LOG(log_debug, "New xid, rmid=%d(%c), node_id=%hd, srv_id=%hd",
0102         (int)rmid, rmid, node_id, srv_id);
0103
0104
0105     memcpy(xid->data + NDRX_XID_TRID_LEN, (char *)&rmid, sizeof(unsigned char));
0106     /* Have an additional infos for transaction id... */
0107     memcpy(xid->data
0108             +NDRX_XID_TRID_LEN
0109             +sizeof(unsigned char)
0110             ,(char *)&(node_id), sizeof(short));
0111     memcpy(xid->data
0112             +NDRX_XID_TRID_LEN
0113             +sizeof(unsigned char)
0114             +sizeof(short)
0115             ,(char *)&(srv_id), sizeof(short));
0116
0117     /* copy first block to second, to have the same values in the block.. */
0118     memcpy(xid->data+MAXGTRIDSIZE, xid->data, MAXBQUALSIZE);
0119
0120     MUTEX_UNLOCK_V(M_xid_gen_lock);
0121 }
0122
0123 /* vim: set ts=4 sw=4 et smartindent: */