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MongoDB LogStream: Added support to limit results (Internally set to 100 records max for now.

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Fixed a bug (infinity loop) when less results are available.
Minor other fixes in mongodb logstream
This commit is contained in:
Andre Lorbach 2012-04-30 18:15:25 +02:00
parent 26911efe19
commit ea63cb4bbc
1 changed files with 1819 additions and 1760 deletions
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73
src/classes/logstreammongodb.class.php
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@ -740,7 +740,7 @@ class LogStreamMongoDB extends LogStream {
if ( isset($arrProperitesIn[SYSLOG_UID]) && isset($arrProperitesIn[MISC_CHECKSUM]) && isset($dbmapping[$szTableType]['DBMAPPINGS'][MISC_CHECKSUM]) )
{
// Create Querydata
$myMongoID = new MongoId( base_convert($arrProperitesIn[SYSLOG_UID], 10, 16) );
$myMongoID = new MongoId( $this->convBaseHelper($arrProperitesIn[SYSLOG_UID], '0123456789', '0123456789abcdef') );
$queryArray = array('_id' => $myMongoID);
// Create Update Data
@ -1336,12 +1336,12 @@ class LogStreamMongoDB extends LogStream {
if ( $myfilter[FILTER_MODE] & FILTER_MODE_INCLUDE )
{
// We use $in by default to get results for each value
$this->_myMongoQuery[ $szMongoPropID ]['$in'][] = $myfilter[FILTER_VALUE];
$this->_myMongoQuery[ $szMongoPropID ]['$in'][] = intval($myfilter[FILTER_VALUE]);
}
else
{
// $ne equals NOT EQUAL
$this->_myMongoQuery[ $szMongoPropID ]['$nin'][] = $myfilter[FILTER_VALUE];
$this->_myMongoQuery[ $szMongoPropID ]['$nin'][] = intval($myfilter[FILTER_VALUE]);
}
// ---
@ -1414,7 +1414,7 @@ class LogStreamMongoDB extends LogStream {
if ( $uID != UID_UNKNOWN )
{
// Add uID Filter as well!
$myMongoID = new MongoId( base_convert($uID, 10, 16) );
$myMongoID = new MongoId( $this->convBaseHelper($uID, '0123456789', '0123456789abcdef') );
$this->_myMongoQuery[ $dbmapping[$szTableType]['DBMAPPINGS'][SYSLOG_UID] ] = array( '$lt' => $myMongoID );
}
@ -1678,25 +1678,48 @@ class LogStreamMongoDB extends LogStream {
// $szSql .= " LIMIT " . $this->_currentRecordStart . ", " . $this->_logStreamConfigObj->RecordsPerQuery;
$myCursor = $this->_myMongoCollection->find($this->_myMongoQuery, $this->_myMongoFields); // ->limit(10); // $collection->find();
// OutputDebugMessage("Cursor verbose: " . var_export($myCursor->explain(), true), DEBUG_DEBUG);
// Uncomment for debug!
// OutputDebugMessage("LogStreamMongoDB|ReadNextRecordsFromDB: myCursor->info() = <pre>" . var_export($myCursor->info(), true) . "</pre>", DEBUG_ULTRADEBUG);
// Limit records
$myCursor->limit( $this->_logStreamConfigObj->RecordsPerQuery );
// OutputDebugMessage("Cursor verbose: " . var_export($myCursor->explain(), true), DEBUG_DEBUG);
$myCursor = $myCursor->sort(array("_id" => -1));
// Copy rows into the buffer!
$iBegin = $this->_currentRecordNum;
$mongoidprev = -1;
foreach ($myCursor as $mongoid => $myRow)
{
// echo $this->convBaseHelper($mongoid, '0123456789abcdef', '0123456789') . "-" . $mongoid . "<br>";
$mongoid = $this->convBaseHelper($mongoid, '0123456789abcdef', '0123456789');
// Check if result was successfull! Compare the queried uID and the MONGOID to abort processing if the same ID was returned! Otherwise we have dupplicated results at the end
if ( $myRow === FALSE || !$myRow || ($uID == base_convert($mongoid, 16, 10) && $myCursor->count() <= 1) )
if ( $myRow === FALSE ||
!$myRow ||
($uID == $mongoid && $myCursor->count() <= 1) ||
($mongoidprev == $mongoid)
)
{
$iBegin--;
break;
}
// Convert ID from HEX back to DEC
$myRow[ "_id" ] = base_convert($myRow[ "_id" ], 16, 10);
$myRow[ "_id" ] = $mongoid; // base_convert($mongoid, 16, 10);
$mongoidprev = $mongoid; // Helper variable to compare last row
// Keys will be converted into lowercase!
$this->bufferedRecords[$iBegin] = array_change_key_case( $myRow, CASE_LOWER);
$iBegin++;
}
// Uncomment for debug!
// OutputDebugMessage("LogStreamMongoDB|ReadNextRecordsFromDB: bufferedRecords = Array <pre>" . var_export($this->bufferedRecords, true) . "</pre>", DEBUG_ULTRADEBUG);
OutputDebugMessage("LogStreamMongoDB|ReadNextRecordsFromDB: ibegin = $iBegin, recordnum = " . $this->_currentRecordNum, DEBUG_ULTRADEBUG);
// --- Check if results were found
if ( $iBegin == $this->_currentRecordNum )
return ERROR_NOMORERECORDS;
@ -1755,6 +1778,42 @@ class LogStreamMongoDB extends LogStream {
OutputDebugMessage("LogStreamMongoDB|PrintDebugError: $errormsg", DEBUG_ERROR);
}
/*
* Helper function to workaround larg numbers bug from php base_convert() taken from comments
*/
private function convBaseHelper($numberInput, $fromBaseInput, $toBaseInput)
{
if ($fromBaseInput==$toBaseInput)
return $numberInput;
$fromBase = str_split($fromBaseInput,1);
$toBase = str_split($toBaseInput,1);
$number = str_split($numberInput,1);
$fromLen=strlen($fromBaseInput);
$toLen=strlen($toBaseInput);
$numberLen=strlen($numberInput);
$retval='';
if ($toBaseInput == '0123456789')
{
$retval=0;
for ($i = 1;$i <= $numberLen; $i++)
$retval = bcadd($retval, bcmul(array_search($number[$i-1], $fromBase),bcpow($fromLen,$numberLen-$i)));
return $retval;
}
if ($fromBaseInput != '0123456789')
$base10=convBase($numberInput, $fromBaseInput, '0123456789');
else
$base10 = $numberInput;
if ($base10<strlen($toBaseInput))
return $toBase[$base10];
while($base10 != '0')
{
$retval = $toBase[bcmod($base10,$toLen)].$retval;
$base10 = bcdiv($base10,$toLen,0);
}
return $retval;
}
// --- End of Class!
}