Rework PA again to not try and sort the passiveLog. Instead, we iterate and store "last" data in a new database table.

This commit is contained in:
Colin Kuskie 2011-10-06 10:22:39 -07:00
parent 5314530a3c
commit 6ed275b133
5 changed files with 99 additions and 46 deletions

View file

@ -61,7 +61,7 @@ Return a statement handle at the desired offset.
sub get_statement {
my ($session, $logIndex) = @_;
my $deltaSql = q{select SQL_CALC_FOUND_ROWS userId, assetId, url, delta, from_unixtime(timeStamp) as stamp from deltaLog order by timestamp limit ?, 500000};
my $deltaSql = q{select SQL_CALC_FOUND_ROWS userId, assetId, url, delta, from_unixtime(timeStamp) as stamp from deltaLog limit ?, 500000};
my $sth = $session->db->read($deltaSql, [$logIndex+0]);
return $sth;
}

View file

@ -59,7 +59,7 @@ Return a statement handle at the desired offset.
sub get_statement {
my ($session, $counter) = @_;
my $passive = q{select SQL_CALC_FOUND_ROWS * from passiveLog where userId <> '1' order by userId, sessionId, timeStamp limit ?, 500000};
my $passive = q{select SQL_CALC_FOUND_ROWS * from passiveLog where userId <> '1' limit ?, 500000};
my $sth = $session->db->read($passive, [$counter+0]);
return $sth;
}
@ -93,68 +93,51 @@ sub execute {
my $lastUrl;
my $counter = $instance->getScratch('counter');
my $sth = get_statement($session, $counter);
if ($counter) {
$lastUserId = $instance->getScratch('lastUserId');
$lastSessionId = $instance->getScratch('lastSessionId');
$lastTimeStamp = $instance->getScratch('lastTimeStamp');
$lastAssetId = $instance->getScratch('lastAssetId');
$lastUrl = $instance->getScratch('lastUrl');
}
else {
my $logLine = $sth->hashRef();
$lastUserId = $logLine->{userId};
$lastSessionId = $logLine->{sessionId};
$lastTimeStamp = $logLine->{timeStamp};
$lastAssetId = $logLine->{assetId};
$lastUrl = $logLine->{url};
$session->db->write('delete from deltaLog'); ##Only if we're starting out
if (! $counter) { #Clean up from last time, just in case
$session->db->write('delete from deltaLog');
$session->db->write('delete from PA_lastLog');
}
my $total_rows = $session->db->quickScalar('select found_rows()');
my $deltaLog = $session->db->prepare('insert into deltaLog (userId, assetId, delta, timeStamp, url) VALUES (?,?,?,?,?)');
my $deltaLog = $session->db->prepare('insert into deltaLog (userId, assetId, timeStamp, url, delta) VALUES (?,?,?,?,?)');
my $recordLast = $session->db->prepare('REPLACE INTO PA_lastLog (userId, sessionId, timeStamp, url) VALUES (?,?,?,?)');
my $fetchLast = $session->db->prepare('select * from PA_lastLog where sessionId=? and userId=?');
my $expired = 0;
LOG_CHUNK: while (1) {
LOG_ENTRY: while (my $logLine = $sth->hashRef()) {
$counter++;
my $delta = $logLine->{timeStamp} - $lastTimeStamp;
if ( $logLine->{userId} eq $lastUserId
&& $logLine->{sessionId} eq $lastSessionId
&& $delta < $deltaInterval ) {
$deltaLog->execute([$lastUserId, $lastAssetId, $delta, $lastTimeStamp, $lastUrl]);
$fetchLast->execute([@{$logLine}{qw/sessionId userId/}]);
my $lastLine = $fetchLast->hashRef();
$recordLast->execute([ (@{ $logLine }{qw/userId sessionId timeStamp url/}) ]);
if ($lastLine->{timeStamp}) {
my $delta = $logLine->{timeStamp} - $lastLine->{timeStamp};
$deltaLog->execute([ (@{ $lastLine }{qw/userId assetId timeStamp url/}), $delta]);
}
$lastUserId = $logLine->{userId};
$lastSessionId = $logLine->{sessionId};
$lastTimeStamp = $logLine->{timeStamp};
$lastAssetId = $logLine->{assetId};
$lastUrl = $logLine->{url};
if (time() > $endTime) {
$instance->setScratch('lastUserId', $lastUserId);
$instance->setScratch('lastSessionId', $lastSessionId);
$instance->setScratch('lastTimeStamp', $lastTimeStamp);
$instance->setScratch('lastAssetId', $lastAssetId);
$instance->setScratch('lastUrl', $lastUrl);
$instance->setScratch('counter', $counter);
$expired = 1;
last LOG_ENTRY;
}
}
$sth->finish;
if ($expired) {
$deltaLog->finish;
$recordLast->finish;
$fetchLast->finish;
$sth->finish;
return $self->WAITING(1);
}
last LOG_CHUNK if $counter >= $total_rows;
$sth = get_statement($session, $counter);
}
$instance->deleteScratch('lastUserId');
$instance->deleteScratch('lastSessionId');
$instance->deleteScratch('lastTimeStamp');
$instance->deleteScratch('lastAssetId');
$instance->deleteScratch('lastUrl');
$instance->deleteScratch('counter');
$deltaLog->finish;
$recordLast->finish;
$fetchLast->finish;
$sth->finish;
$session->db->write('delete from PA_lastLog');
return $self->COMPLETE;
}