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Merge pull request #113 from sourcefabric/saas-temp-testing

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Fix for performance problem with very large library tables
This commit is contained in:
Denise Rigato 2015-05-22 08:59:13 -04:00
commit 213aea2388
1 changed files with 145 additions and 1 deletions
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146
airtime_mvc/application/models/Schedule.php
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@ -139,7 +139,8 @@ SQL;
$previousShowID = count($shows['previousShow'])>0?$shows['previousShow'][0]['instance_id']:null;
$currentShowID = count($shows['currentShow'])>0?$shows['currentShow'][0]['instance_id']:null;
$nextShowID = count($shows['nextShow'])>0?$shows['nextShow'][0]['instance_id']:null;
$results = self::GetPrevCurrentNext($previousShowID, $currentShowID, $nextShowID, $utcNow);
//$results = self::GetPrevCurrentNext($previousShowID, $currentShowID, $nextShowID, $utcNow);
$results = Application_Model_Schedule::getPVC($utcNow);
$range = array(
"env" => APPLICATION_ENV,
@ -156,6 +157,149 @@ SQL;
return $range;
}
public static function getPVC($utcNow)
{
$timeZone = new DateTimeZone("UTC"); //This function works entirely in UTC.
assert(get_class($utcNow) === "DateTime");
assert($utcNow->getTimeZone() == $timeZone);
$results['previous'] = null;
$results['current'] = null;
$results['next'] = null;
$sql = "select s.id, s.starts, s.ends, s.file_id, s.stream_id, s.media_item_played,
s.instance_id, si.ends as show_ends from cc_schedule s left join cc_show_instances si
on s.instance_id = si.id where s.playout_status > 0 and s.starts <= :p1
and s.ends >= :p2 order by starts desc limit 1";
$params = array(
":p1" => $utcNow->format("Y-m-d H:i:s"),
":p2" => $utcNow->format("Y-m-d H:i:s")
);
$rows = Application_Common_Database::prepareAndExecute($sql, $params);
if (count($rows) < 1) {
return $results;
}
if ($rows[0]["show_ends"] < $utcNow->format("Y-m-d H:i:s")) {
return $results;
}
$currentMedia = $rows[0];
if ($currentMedia["ends"] > $currentMedia["show_ends"]) {
$currentMedia["ends"] = $currentMedia["show_ends"];
}
$currentMediaScheduleId = $currentMedia["id"];
$currentMediaFileId = $currentMedia["file_id"];
$currentMediaStreamId = $currentMedia["stream_id"];
if (isset($currentMediaFileId)) {
$currentMediaType = "track";
$currentFile = CcFilesQuery::create()
->filterByDbId($currentMediaFileId)
->findOne();
$currentMediaName = $currentFile->getDbArtistName() . " - " . $currentFile->getDbTrackTitle();
} else if (isset($currentMediaStreamId)) {
$currentMediaType = "webstream";
$currentWebstream = CcWebstreamQuery::create()
->filterByDbId($currentMediaStreamId)
->findOne();
$currentWebstreamMetadata = CcWebstreamMetadataQuery::create()
->filterByDbInstanceId($currentMedia["instance_id"])
->orderByDbStartTime(Criteria::DESC)
->findOne();
$currentMediaName = $currentWebstream->getDbName();
if (isset($currentWebstreamMetadata)) {
$currentMediaName .= " - " . $currentWebstreamMetadata->getDbLiquidsoapData();
}
} else {
$currentMediaType = null;
}
$results["current"] = array(
"starts" => $currentMedia["starts"],
"ends" => $currentMedia["ends"],
"type" => $currentMediaType,
"name" => $currentMediaName,
"media_item_played" => $currentMedia["media_item_played"],
"record" => "0"
);
$previousMedia = CcScheduleQuery::create()
->filterByDbId($currentMediaScheduleId-1)
->orderByDbStarts()
->findOne();
if (isset($previousMedia)) {
$previousMediaFileId = $previousMedia->getDbFileId();
$previousMediaStreamId = $previousMedia->getDbStreamId();
if (isset($previousMediaFileId)) {
$previousMediaType = "track";
$previousFile = CcFilesQuery::create()
->filterByDbId($previousMediaFileId)
->findOne();
$previousMediaName = $previousFile->getDbArtistName() . " - " . $previousFile->getDbTrackTitle();
} else if (isset($previousMediaStreamId)) {
$previousMediaName = null;
$previousMediaType = "webstream";
$previousWebstream = CcWebstreamQuery::create()
->filterByDbId($previousMediaStreamId)
->findOne();
/*$previousWebstreamMetadata = CcWebstreamMetadataQuery::create()
->filterByDbInstanceId($previousMedia->getDbInstanceId())
->orderByDbStartTime(Criteria::DESC)
->findOne();*/
$previousMediaName = $previousWebstream->getDbName();
} else {
$previousMediaType = null;
}
$results["previous"] = array(
"starts" => $previousMedia->getDbStarts(),
"ends" => $previousMedia->getDbEnds(),
"type" => $previousMediaType,
"name" => $previousMediaName
);
}
$nextMedia = CcScheduleQuery::create()
->filterByDbId($currentMediaScheduleId+1)
->orderByDbStarts()
->findOne();
if (isset($nextMedia)) {
$nextMediaFileId = $nextMedia->getDbFileId();
$nextMediaStreamId = $nextMedia->getDbStreamId();
if (isset($nextMediaFileId)) {
$nextMediaType = "track";
$nextFile = CcFilesQuery::create()
->filterByDbId($nextMediaFileId)
->findOne();
$nextMediaName = $nextFile->getDbArtistName() . " - " . $nextFile->getDbTrackTitle();
} else if (isset($nextMediaStreamId)) {
$nextMediaType = "webstream";
$nextWebstream = CcWebstreamQuery::create()
->filterByDbId($nextMediaStreamId)
->findOne();
/*$nextWebstreamMetadata = CcWebstreamMetadataQuery::create()
->filterByDbInstanceId($nextMedia->getDbInstanceId())
->orderByDbStartTime(Criteria::DESC)
->findOne();*/
$nextMediaName = $nextWebstream->getDbName();
} else {
$nextMediaType = null;
}
$results["next"] = array(
"starts" => $nextMedia->getDbStarts(),
"ends" => $nextMedia->getDbEnds(),
"type" => $nextMediaType,
"name" => $nextMediaName
);
}
return $results;
}
/**
* Queries the database for the set of schedules one hour before
* and after the given time. If a show starts and ends within that