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/* action.c
*
* Implementation of the action object.
*
* File begun on 2007-08-06 by RGerhards (extracted from syslogd.c)
*
* Copyright 2007 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rsyslog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
#include "rsyslog.h"
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <stdlib.h>
#include <time.h>
#include "syslogd.h"
#include "template.h"
#include "action.h"
#include "modules.h"
#include "sync.h"
/* object static data (once for all instances) */
static int glbliActionResumeInterval = 30;
/* destructs an action descriptor object
* rgerhards, 2007-08-01
*/
rsRetVal actionDestruct(action_t *pThis)
{
assert(pThis != NULL);
if(pThis->pMod != NULL)
pThis->pMod->freeInstance(pThis->pModData);
if(pThis->f_pMsg != NULL)
MsgDestruct(pThis->f_pMsg);
SYNC_OBJ_TOOL_EXIT(pThis);
if(pThis->ppTpl != NULL)
free(pThis->ppTpl);
if(pThis->ppMsgs != NULL)
free(pThis->ppMsgs);
free(pThis);
return RS_RET_OK;
}
/* create a new action descriptor object
* rgerhards, 2007-08-01
*/
rsRetVal actionConstruct(action_t **ppThis)
{
DEFiRet;
action_t *pThis;
assert(ppThis != NULL);
if((pThis = (action_t*) calloc(1, sizeof(action_t))) == NULL) {
ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY);
}
pThis->iResumeInterval = glbliActionResumeInterval;
SYNC_OBJ_TOOL_INIT(pThis);
finalize_it:
*ppThis = pThis;
return iRet;
}
/* set an action back to active state -- rgerhards, 2007-08-02
*/
static rsRetVal actionResume(action_t *pThis)
{
DEFiRet;
assert(pThis != NULL);
pThis->bSuspended = 0;
return iRet;
}
/* set the global resume interval
*/
rsRetVal actionSetGlobalResumeInterval(int iNewVal)
{
glbliActionResumeInterval = iNewVal;
return RS_RET_OK;
}
/* suspend an action -- rgerhards, 2007-08-02
*/
rsRetVal actionSuspend(action_t *pThis)
{
DEFiRet;
assert(pThis != NULL);
pThis->bSuspended = 1;
pThis->ttResumeRtry = time(NULL) + pThis->iResumeInterval;
pThis->iNbrResRtry = 0; /* tell that we did not yet retry to resume */
return iRet;
}
/* try to resume an action -- rgerhards, 2007-08-02
* returns RS_RET_OK if resumption worked, RS_RET_SUSPEND if the
* action is still suspended.
*/
rsRetVal actionTryResume(action_t *pThis)
{
DEFiRet;
time_t ttNow;
assert(pThis != NULL);
ttNow = time(NULL); /* do the system call just once */
/* first check if it is time for a re-try */
if(ttNow > pThis->ttResumeRtry) {
iRet = pThis->pMod->tryResume(pThis->pModData);
if(iRet == RS_RET_SUSPENDED) {
/* set new tryResume time */
++pThis->iNbrResRtry;
/* if we have more than 10 retries, we prolong the
* retry interval. If something is really stalled, it will
* get re-tried only very, very seldom - but that saves
* CPU time. TODO: maybe a config option for that?
* rgerhards, 2007-08-02
*/
pThis->ttResumeRtry = ttNow + pThis->iResumeInterval * (pThis->iNbrResRtry / 10 + 1);
}
} else {
/* it's too early, we are still suspended --> indicate this */
iRet = RS_RET_SUSPENDED;
}
if(iRet == RS_RET_OK)
actionResume(pThis);
dbgprintf("actionTryResume: iRet: %d, next retry (if applicable): %u [now %u]\n",
iRet, (unsigned) pThis->ttResumeRtry, (unsigned) ttNow);
return iRet;
}
/* debug-print the contents of an action object
* rgerhards, 2007-08-02
*/
rsRetVal actionDbgPrint(action_t *pThis)
{
DEFiRet;
printf("%s: ", modGetStateName(pThis->pMod));
pThis->pMod->dbgPrintInstInfo(pThis->pModData);
printf("\n\tInstance data: 0x%lx\n", (unsigned long) pThis->pModData);
printf("\tRepeatedMsgReduction: %d\n", pThis->f_ReduceRepeated);
printf("\tResume Interval: %d\n", pThis->iResumeInterval);
printf("\tSuspended: %d", pThis->bSuspended);
if(pThis->bSuspended) {
printf(" next retry: %u, number retries: %d", (unsigned) pThis->ttResumeRtry, pThis->iNbrResRtry);
}
printf("\n");
printf("\tDisabled: %d\n", !pThis->bEnabled);
printf("\tExec only when previous is suspended: %d\n", pThis->bExecWhenPrevSusp);
printf("\n");
return iRet;
}
/*
* vi:set ai:
*/
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