source/exsinglesv/local.c

0001 /**
0002  * @brief Local request handler (for transactiona lock status)
0003  *
0004  * @file local.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 #include <unistd.h>
0041 #include <signal.h>
0042
0043 #include <ndebug.h>
0044 #include <atmi.h>
0045 #include <atmi_int.h>
0046 #include <typed_buf.h>
0047 #include <ndrstandard.h>
0048 #include <ubf.h>
0049 #include <ubfutil.h>
0050 #include <cconfig.h>
0051 #include "exsinglesv.h"
0052 #include <Exfields.h>
0053 /*---------------------------Externs------------------------------------*/
0054 /*---------------------------Macros-------------------------------------*/
0055 /*---------------------------Enums--------------------------------------*/
0056 /*---------------------------Typedefs-----------------------------------*/
0057 /*---------------------------Globals------------------------------------*/
0058 /*---------------------------Statics------------------------------------*/
0059 /*---------------------------Prototypes---------------------------------*/
0060 /**
0061  * Local checks, may call remote server
0062  * For getting current status & clock time.
0063  * Allow clock drift for one check interval only.
0064  * @param p_svc - data & len used only... (to be in future)
0065  */
0066 void SGLOC (TPSVCINFO *p_svc)
0067 {
0068     UBFH *p_ub = (UBFH *)p_svc->data;
0069     int ret=EXSUCCEED;
0070     char cmd = EXEOS;
0071     int cd;
0072     int int_diag = 0;
0073     char lock_status;
0074     ndrx_locksm_ctx_t lockst;
0075     long lookup_grpno;
0076
0077     tplogprintubf(log_info, "SGLOC request buffer:", p_ub);
0078
0079     /* check local group, is it locked or not ... */
0080     if (EXSUCCEED!=Bget(p_ub, EX_PROCGRP_NO, 0, (char *)&lookup_grpno, 0L))
0081     {
0082         TP_LOG(log_error, "Failed to get EX_PROCGRP_NO: %s", Bstrerror(Berror));
0083         ndrx_exsinglesv_set_error_fmt(p_ub, TPEINVAL, "Failed to get EX_PROCGRP_NO: %s",
0084             Bstrerror(Berror));
0085         EXFAIL_OUT(ret);
0086     }
0087
0088     if (ndrx_G_exsinglesv_conf.procgrp_lp_no!=lookup_grpno)
0089     {
0090         TP_LOG(log_error, "Invalid EX_PROCGRP_NO server %ld, requested %ld",
0091             ndrx_G_exsinglesv_conf.procgrp_lp_no, lookup_grpno);
0092         ndrx_exsinglesv_set_error_fmt(p_ub, TPEINVAL,
0093             "Invalid EX_PROCGRP_NO server %ld, requested %ld",
0094             ndrx_G_exsinglesv_conf.procgrp_lp_no, lookup_grpno);
0095         EXFAIL_OUT(ret);
0096     }
0097
0098     ret=ndrx_exsinglesv_sg_is_locked(&lockst, EXFALSE);
0099
0100     if (EXFAIL==ret)
0101     {
0102         TP_LOG(log_error, "Failed to check lock status");
0103         ndrx_exsinglesv_set_error_fmt(p_ub, TPESYSTEM, "Failed to check lock status");
0104         EXFAIL_OUT(ret);
0105     }
0106
0107     lock_status=(char)ret;
0108     ret=EXSUCCEED;
0109
0110     if (EXSUCCEED!=Bchg(p_ub, EX_LCKSTATUS, 0, &lock_status, 0))
0111     {
0112         TP_LOG(log_error, "Failed to set EX_LCKSTATUS: %s", Bstrerror(Berror));
0113         ndrx_exsinglesv_set_error_fmt(p_ub, TPESYSTEM, "Failed to set EX_LCKSTATUS: %s",
0114             Bstrerror(Berror));
0115         EXFAIL_OUT(ret);
0116     }
0117
0118     if (EXSUCCEED!=Bchg(p_ub, EX_SEQUENCE, 0, (char *)&lockst.local.sequence, 0))
0119     {
0120         TP_LOG(log_error, "Failed to set EX_SEQUENCE: %s", Bstrerror(Berror));
0121         ndrx_exsinglesv_set_error_fmt(p_ub, TPESYSTEM, "Failed to set EX_SEQUENCE: %s",
0122             Bstrerror(Berror));
0123         EXFAIL_OUT(ret);
0124     }
0125
0126     /* approve the buffer */
0127     ndrx_exsinglesv_set_error_fmt(p_ub, TPMINVAL, "Succeed");
0128
0129 out:
0130     tplogprintubf(log_info, "SGLOC response buffer:", p_ub);
0131
0132     tpreturn(  ret==EXSUCCEED?TPSUCCESS:TPFAIL,
0133                 0L,
0134                 (char *)p_ub,
0135                 0L,
0136                 0L);
0137 }
0138
0139 /* vim: set ts=4 sw=4 et smartindent: */