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Colin Kuskie 2013-03-20 21:38:23 -07:00
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lib/WebGUI/Workflow/Activity/SummarizePassiveAnalytics.pm Normal file
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package WebGUI::Workflow::Activity::SummarizePassiveAnalytics;
use strict;
use base 'WebGUI::Workflow::Activity';
=head1 NAME
Package WebGUI::Workflow::Activity::SummarizePassiveAnalytics
=head1 DESCRIPTION
Summarize how long a user stayed on a page, using a user supplied interval.
=head1 SYNOPSIS
See WebGUI::Workflow::Activity for details on how to use any activity.
=head1 METHODS
These methods are available from this class:
=cut
#-------------------------------------------------------------------
=head2 definition ( session, definition )
See WebGUI::Workflow::Activity::definition() for details.
=cut
sub definition {
my $class = shift;
my $session = shift;
my $definition = shift;
my $i18n = WebGUI::International->new($session, 'PassiveAnalytics');
push(@{$definition}, {
name=>$i18n->get('Summarize Passive Analytics'),
properties=> {
deltaInterval => {
fieldType => 'interval',
label => $i18n->get('pause interval'),
defaultValue => 15,
hoverHelp => $i18n->get('pause interval help'),
},
}
});
return $class->SUPER::definition($session,$definition);
}
#-------------------------------------------------------------------
=head2 get_statement( session, counter )
Return a statement handle at the desired offset.
=cut
sub get_statement {
my ($session, $counter) = @_;
my $passive = q{select SQL_CALC_FOUND_ROWS * from passiveLog where userId <> '1' limit ?, 500000};
my $sth = $session->db->read($passive, [$counter+0]);
return $sth;
}
#-------------------------------------------------------------------
=head2 execute ( [ object ] )
Analyze the passiveLog table, and generate the deltaLog table.
=head3 notes
If there is only 1 line in the table for a particular sessionId or
userId, no conclusions as to how long the user viewed a page can be
drawn from that. Similarly, the last entry in their browsing log
yields no data, since we require another entry in the passiveLog to
determine a delta.
=cut
sub execute {
my ($self, undef, $instance) = @_;
my $session = $self->session;
my $endTime = time() + $self->getTTL;
my $deltaInterval = $self->get('deltaInterval');
my $lastUserId;
my $lastSessionId;
my $lastTimeStamp;
my $lastAssetId;
my $lastUrl;
my $counter = $instance->getScratch('counter');
my $sth = get_statement($session, $counter);
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, 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++;
$fetchLast->execute([@{$logLine}{qw/sessionId userId/}]);
my $lastLine = $fetchLast->hashRef();
$recordLast->execute([ (@{ $logLine }{qw/userId sessionId timeStamp url/}) ]);
if ($lastLine->{timeStamp}) {
my $delta = $logLine->{timeStamp} - $lastLine->{timeStamp};
if ($delta <= $deltaInterval) {
$deltaLog->execute([ (@{ $lastLine }{qw/userId assetId timeStamp url/}), $delta]);
}
}
if (time() > $endTime) {
$expired = 1;
last LOG_ENTRY;
}
}
if ($expired) {
$deltaLog->finish;
$recordLast->finish;
$fetchLast->finish;
$sth->finish;
$instance->setScratch('counter', $counter);
return $self->WAITING(1);
}
last LOG_CHUNK if $counter >= $total_rows;
$sth = get_statement($session, $counter);
}
$instance->deleteScratch('counter');
$deltaLog->finish;
$recordLast->finish;
$fetchLast->finish;
$sth->finish;
$session->db->write('delete from PA_lastLog');
return $self->COMPLETE;
}
1;
#vim:ft=perl