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PhabricatorFactDatapointQuery.php
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Created
Sun, Dec 1, 20:53

PhabricatorFactDatapointQuery.php
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<?php
final class PhabricatorFactDatapointQuery extends Phobject {
private $facts;
private $objectPHIDs;
private $limit;
private $needVectors;
private $keyMap = array();
private $dimensionMap = array();
public function withFacts(array $facts) {
$this->facts = $facts;
return $this;
}
public function withObjectPHIDs(array $object_phids) {
$this->objectPHIDs = $object_phids;
return $this;
}
public function setLimit($limit) {
$this->limit = $limit;
return $this;
}
public function needVectors($need) {
$this->needVectors = $need;
return $this;
}
public function execute() {
$facts = mpull($this->facts, null, 'getKey');
if (!$facts) {
throw new Exception(pht('Executing a fact query requires facts.'));
}
$table_map = array();
foreach ($facts as $fact) {
$datapoint = $fact->newDatapoint();
$table = $datapoint->getTableName();
if (!isset($table_map[$table])) {
$table_map[$table] = array(
'table' => $datapoint,
'facts' => array(),
);
}
$table_map[$table]['facts'][] = $fact;
}
$rows = array();
foreach ($table_map as $spec) {
$rows[] = $this->executeWithTable($spec);
}
$rows = array_mergev($rows);
$key_unmap = array_flip($this->keyMap);
$dimension_unmap = array_flip($this->dimensionMap);
$groups = array();
$need_phids = array();
foreach ($rows as $row) {
$groups[$row['keyID']][] = $row;
$object_id = $row['objectID'];
if (!isset($dimension_unmap[$object_id])) {
$need_phids[$object_id] = $object_id;
}
$dimension_id = $row['dimensionID'];
if ($dimension_id && !isset($dimension_unmap[$dimension_id])) {
$need_phids[$dimension_id] = $dimension_id;
}
}
$dimension_unmap += id(new PhabricatorFactObjectDimension())
->newDimensionUnmap($need_phids);
$results = array();
foreach ($groups as $key_id => $rows) {
$key = $key_unmap[$key_id];
$fact = $facts[$key];
$datapoint = $fact->newDatapoint();
foreach ($rows as $row) {
$dimension_id = $row['dimensionID'];
if ($dimension_id) {
if (!isset($dimension_unmap[$dimension_id])) {
continue;
} else {
$dimension_phid = $dimension_unmap[$dimension_id];
}
} else {
$dimension_phid = null;
}
$object_id = $row['objectID'];
if (!isset($dimension_unmap[$object_id])) {
continue;
} else {
$object_phid = $dimension_unmap[$object_id];
}
$result = array(
'key' => $key,
'objectPHID' => $object_phid,
'dimensionPHID' => $dimension_phid,
'value' => (int)$row['value'],
'epoch' => $row['epoch'],
);
if ($this->needVectors) {
$result['vector'] = $datapoint->newRawVector($result);
}
$results[] = $result;
}
}
return $results;
}
private function executeWithTable(array $spec) {
$table = $spec['table'];
$facts = $spec['facts'];
$conn = $table->establishConnection('r');
$fact_keys = mpull($facts, 'getKey');
$this->keyMap = id(new PhabricatorFactKeyDimension())
->newDimensionMap($fact_keys);
if (!$this->keyMap) {
return array();
}
$where = array();
$where[] = qsprintf(
$conn,
'keyID IN (%Ld)',
$this->keyMap);
if ($this->objectPHIDs) {
$object_map = id(new PhabricatorFactObjectDimension())
->newDimensionMap($this->objectPHIDs);
if (!$object_map) {
return array();
}
$this->dimensionMap = $object_map;
$where[] = qsprintf(
$conn,
'objectID IN (%Ld)',
$this->dimensionMap);
}
$where = qsprintf($conn, '%LA', $where);
if ($this->limit) {
$limit = qsprintf(
$conn,
'LIMIT %d',
$this->limit);
} else {
$limit = qsprintf($conn, '');
}
return queryfx_all(
$conn,
'SELECT keyID, objectID, dimensionID, value, epoch
FROM %T WHERE %Q %Q',
$table->getTableName(),
$where,
$limit);
}
}

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