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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <signal.h>
#include <time.h>
#include "bson.h"
#include "mongo.h"
#include "config.h"
#include "rsyslog.h"
#include "conf.h"
#include "syslogd-types.h"
#include "srUtils.h"
#include "template.h"
#include "module-template.h"
#include "errmsg.h"
#include "cfsysline.h"
#include "mongo-c-driver/src/mongo.h"
#define countof(X) ( (size_t) ( sizeof(X)/sizeof*(X) ) )
#define DEFAULT_SERVER "127.0.0.1"
#define DEFAULT_DATABASE "syslog"
#define DEFAULT_COLLECTION "log"
#define DEFAULT_DB_COLLECTION "syslog.log"
//i just defined some constants, i couldt not find the limit
#define MONGO_DB_NAME_SIZE 128
#define MONGO_COLLECTION_NAME_SIZE 128
MODULE_TYPE_OUTPUT
/* internal structures
*/
DEF_OMOD_STATIC_DATA
DEFobjCurrIf(errmsg)
typedef struct _instanceData {
mongo_connection conn[1]; /* ptr */
mongo_connection_options opts[1];
mongo_conn_return status;
char db[MONGO_DB_NAME_SIZE];
char collection[MONGO_COLLECTION_NAME_SIZE];
char dbcollection[MONGO_DB_NAME_SIZE + MONGO_COLLECTION_NAME_SIZE + 1];
unsigned uLastMongoDBErrno;
//unsigned iSrvPort; /* sample: server port */
} instanceData;
char db[_DB_MAXDBLEN+2];
static int iSrvPort = 27017;
BEGINcreateInstance
CODESTARTcreateInstance
ENDcreateInstance
BEGINisCompatibleWithFeature
CODESTARTisCompatibleWithFeature
/* use this to specify if select features are supported by this
* plugin. If not, the framework will handle that. Currently, only
* RepeatedMsgReduction ("last message repeated n times") is optional.
*/
if(eFeat == sFEATURERepeatedMsgReduction)
iRet = RS_RET_OK;
ENDisCompatibleWithFeature
static void closeMongoDB(instanceData *pData)
{
ASSERT(pData != NULL);
if(pData->conn != NULL) {
mongo_destroy( pData->conn );
memset(pData->conn,0x00,sizeof(mongo_connection));
}
}
BEGINfreeInstance
CODESTARTfreeInstance
closeMongoDB(pData);
ENDfreeInstance
BEGINdbgPrintInstInfo
CODESTARTdbgPrintInstInfo
/* nothing special here */
ENDdbgPrintInstInfo
/* log a database error with descriptive message.
* We check if we have a valid MongoDB handle. If not, we simply
* report an error
*/
static void reportDBError(instanceData *pData, int bSilent)
{
char errMsg[512];
bson ErrObj;
ASSERT(pData != NULL);
/* output log message */
errno = 0;
if(pData->conn == NULL) {
errmsg.LogError(0, NO_ERRCODE, "unknown DB error occured - could not obtain MongoDB handle");
} else { /* we can ask mysql for the error description... */
//we should handle the error. if bSilent is set then we should print as debug
mongo_cmd_get_last_error(pData->conn, pData->db, &ErrObj);
bson_destroy(&ErrObj);
}
return;
}
/* The following function is responsible for initializing a
* MySQL connection.
* Initially added 2004-10-28 mmeckelein
*/
static rsRetVal initMongoDB(instanceData *pData, int bSilent)
{
DEFiRet;
ASSERT(pData != NULL);
ASSERT(pData->conn == NULL);
//I'm trying to fallback to a default here
if(pData->opts->port == 0)
pData->opts->port = 27017;
if(pData->opts->host == 0x00)
strcpy(pData->opts->host,DEFAULT_SERVER);
if(pData->dbcollection == 0x00)
strcpy(pData->dbcollection,DEFAULT_DB_COLLECTION);
pData->status = mongo_connect(pData->conn, pData->opts );
switch (pData->status) {
case mongo_conn_success:
fprintf(stderr, "connection succeeded\n" );
iRet = RS_RET_OK;
break;
case mongo_conn_bad_arg:
errmsg.LogError(0, RS_RET_SUSPENDED, "can not initialize MongoDB handle");
fprintf(stderr, "bad arguments\n" );
iRet = RS_RET_SUSPENDED;
break;
case mongo_conn_no_socket:
errmsg.LogError(0, RS_RET_SUSPENDED, "can not initialize MongoDB handle");
fprintf(stderr, "no socket\n" );
iRet = RS_RET_SUSPENDED;
break;
case mongo_conn_fail:
errmsg.LogError(0, RS_RET_SUSPENDED, "can not initialize MongoDB handle");
fprintf(stderr, "connection failed\n" );
iRet = RS_RET_SUSPENDED;
break;
case mongo_conn_not_master:
errmsg.LogError(0, RS_RET_SUSPENDED, "can not initialize MongoDB handle");
fprintf(stderr, "not master\n" );
iRet = RS_RET_SUSPENDED;
break;
}
RETiRet;
}
//we must implement it
rsRetVal writeMongoDB(uchar *psz, instanceData *pData)
{
char mydate[32];
char **szParams;
bson b[1];
bson_buffer buf[1];
bson_buffer_init( buf );
bson_append_new_oid(buf, "_id" );
memset(mydate,0x00,32);
DEFiRet;
ASSERT(psz != NULL);
ASSERT(pData != NULL);
/* see if we are ready to proceed */
if(pData->conn == NULL) {
CHKiRet(initMongoDB(pData, 0));
}
szParams = (char**)(void*) psz;
//We can make it beter
//if you change the fields in your template, we must update it here
//there is any C_metaprogramming_ninja there? :-)
if(countof(szParams) > 0)
{
bson_append_string( buf, "msg", szParams[0]);
bson_append_string( buf, "facility",szParams[1]);
bson_append_string( buf, "hostname", szParams[2] );
bson_append_string(buf, "priority",szParams[3]);
bson_append_int(buf,"count",countof(szParams));
bson_from_buffer( b, buf );
mongo_insert(pData->conn, pData->dbcollection, b );
}
if(b)
bson_destroy(b);
finalize_it:
if(iRet == RS_RET_OK) {
pData->uLastMongoDBErrno = 0; /* reset error for error supression */
}
RETiRet;
}
BEGINtryResume
CODESTARTtryResume
if(pData->conn == NULL) {
iRet = initMongoDB(pData, 1);
}
ENDtryResume
BEGINdoAction
CODESTARTdoAction
iRet = writeMongoDB(ppString[0], pData);
ENDdoAction
BEGINparseSelectorAct
//int iMongoDBPropErr = 0;
CODESTARTparseSelectorAct
CODE_STD_STRING_REQUESTparseSelectorAct(1)
if(!strncmp((char*) p, ":ommongodb:", sizeof(":ommongodb:") - 1)) {
p += sizeof(":ommongodb:") - 1; /* eat indicator sequence (-1 because of '\0'!) */
} else {
ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED);
}
CHKiRet(createInstance(&pData));
if(getSubString(&p, pData->opts->host, MAXHOSTNAMELEN+1, ','))
strcpy(pData->opts->host,DEFAULT_SERVER);
//we must define the max db name
if(getSubString(&p,pData->db,255,','))
strcpy(pData->db,DEFAULT_DATABASE);
if(getSubString(&p,pData->collection,255,';'))
strcpy(pData->collection,DEFAULT_COLLECTION);
if(*(p-1) == ';')
--p;
CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_TPL_AS_ARRAY, (uchar*) " StdMongoDBFmt"));
pData->opts->port = (unsigned) iSrvPort; /* set configured port */
sprintf(pData->dbcollection,"%s.%s",pData->db,pData->collection);
CHKiRet(initMongoDB(pData, 0));
CODE_STD_FINALIZERparseSelectorAct
ENDparseSelectorAct
BEGINmodExit
CODESTARTmodExit
ENDmodExit
BEGINqueryEtryPt
CODESTARTqueryEtryPt
CODEqueryEtryPt_STD_OMOD_QUERIES
ENDqueryEtryPt
BEGINmodInit()
CODESTARTmodInit
*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
CODEmodInit_QueryRegCFSLineHdlr
CHKiRet(objUse(errmsg, CORE_COMPONENT));
INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING);
DBGPRINTF("ompgsql: module compiled with rsyslog version %s.\n", VERSION);
DBGPRINTF("ompgsql: %susing transactional output interface.\n", bCoreSupportsBatching ? "" : "not ");
ENDmodInit
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