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PhabricatorSearchEngineElastic.php
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Created
Thu, Jan 9, 11:48

PhabricatorSearchEngineElastic.php
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<?php
/**
* @group search
*/
final class PhabricatorSearchEngineElastic extends PhabricatorSearchEngine {
private $uri;
private $timeout;
public function __construct($uri) {
$this->uri = $uri;
}
public function setTimeout($timeout) {
$this->timeout = $timeout;
return $this;
}
public function getTimeout() {
return $this->timeout;
}
public function reindexAbstractDocument(
PhabricatorSearchAbstractDocument $doc) {
$type = $doc->getDocumentType();
$phid = $doc->getPHID();
$handle = id(new PhabricatorHandleQuery())
->setViewer(PhabricatorUser::getOmnipotentUser())
->withPHIDs(array($phid))
->executeOne();
// URL is not used internally but it can be useful externally.
$spec = array(
'title' => $doc->getDocumentTitle(),
'url' => PhabricatorEnv::getProductionURI($handle->getURI()),
'dateCreated' => $doc->getDocumentCreated(),
'_timestamp' => $doc->getDocumentModified(),
'field' => array(),
'relationship' => array(),
);
foreach ($doc->getFieldData() as $field) {
$spec['field'][] = array_combine(array('type', 'corpus', 'aux'), $field);
}
foreach ($doc->getRelationshipData() as $relationship) {
list($rtype, $to_phid, $to_type, $time) = $relationship;
$spec['relationship'][$rtype][] = array(
'phid' => $to_phid,
'phidType' => $to_type,
'when' => $time,
);
}
$this->executeRequest(
"/phabricator/{$type}/{$phid}/",
$spec,
$is_write = true);
}
public function reconstructDocument($phid) {
$type = phid_get_type($phid);
$response = $this->executeRequest("/phabricator/{$type}/{$phid}", array());
if (empty($response['exists'])) {
return null;
}
$hit = $response['_source'];
$doc = new PhabricatorSearchAbstractDocument();
$doc->setPHID($phid);
$doc->setDocumentType($response['_type']);
$doc->setDocumentTitle($hit['title']);
$doc->setDocumentCreated($hit['dateCreated']);
$doc->setDocumentModified($hit['_timestamp']);
foreach ($hit['field'] as $fdef) {
$doc->addField($fdef['type'], $fdef['corpus'], $fdef['aux']);
}
foreach ($hit['relationship'] as $rtype => $rships) {
foreach ($rships as $rship) {
$doc->addRelationship(
$rtype,
$rship['phid'],
$rship['phidType'],
$rship['when']);
}
}
return $doc;
}
private function buildSpec(PhabricatorSearchQuery $query) {
$spec = array();
$filter = array();
if ($query->getQuery() != '') {
$spec[] = array(
'field' => array(
'field.corpus' => $query->getQuery(),
),
);
}
$exclude = $query->getParameter('exclude');
if ($exclude) {
$filter[] = array(
'not' => array(
'ids' => array(
'values' => array($exclude),
),
),
);
}
$rel_mapping = array(
'author' => PhabricatorSearchRelationship::RELATIONSHIP_AUTHOR,
'open' => PhabricatorSearchRelationship::RELATIONSHIP_OPEN,
'owner' => PhabricatorSearchRelationship::RELATIONSHIP_OWNER,
'subscribers' => PhabricatorSearchRelationship::RELATIONSHIP_SUBSCRIBER,
'project' => PhabricatorSearchRelationship::RELATIONSHIP_PROJECT,
'repository' => PhabricatorSearchRelationship::RELATIONSHIP_REPOSITORY,
);
foreach ($rel_mapping as $name => $field) {
$param = $query->getParameter($name);
if (is_array($param)) {
$should = array();
foreach ($param as $val) {
$should[] = array(
'text' => array(
"relationship.{$field}.phid" => array(
'query' => $val,
'type' => 'phrase',
),
),
);
}
// We couldn't solve it by minimum_number_should_match because it can
// match multiple owners without matching author.
$spec[] = array('bool' => array('should' => $should));
} else if ($param) {
$filter[] = array(
'exists' => array(
'field' => "relationship.{$field}.phid",
),
);
}
}
if ($spec) {
$spec = array('query' => array('bool' => array('must' => $spec)));
}
if ($filter) {
$filter = array('filter' => array('and' => $filter));
if (!$spec) {
$spec = array('query' => array('match_all' => new stdClass()));
}
$spec = array(
'query' => array(
'filtered' => $spec + $filter,
),
);
}
if (!$query->getQuery()) {
$spec['sort'] = array(
array('dateCreated' => 'desc'),
);
}
$spec['from'] = (int)$query->getParameter('offset', 0);
$spec['size'] = (int)$query->getParameter('limit', 25);
return $spec;
}
public function executeSearch(PhabricatorSearchQuery $query) {
$type = $query->getParameter('type');
if ($type) {
$uri = "/phabricator/{$type}/_search";
} else {
// Don't use '/phabricator/_search' for the case that there is something
// else in the index (for example if 'phabricator' is only an alias to
// some bigger index).
$types = PhabricatorSearchAbstractDocument::getSupportedTypes();
$uri = '/phabricator/' . implode(',', array_keys($types)) . '/_search';
}
try {
$response = $this->executeRequest($uri, $this->buildSpec($query));
} catch (HTTPFutureResponseStatusHTTP $ex) {
// elasticsearch probably uses Lucene query syntax:
// http://lucene.apache.org/core/3_6_1/queryparsersyntax.html
// Try literal search if operator search fails.
if (!$query->getQuery()) {
throw $ex;
}
$query = clone $query;
$query->setQuery(addcslashes($query->getQuery(), '+-&|!(){}[]^"~*?:\\'));
$response = $this->executeRequest($uri, $this->buildSpec($query));
}
$phids = ipull($response['hits']['hits'], '_id');
return $phids;
}
private function executeRequest($path, array $data, $is_write = false) {
$uri = new PhutilURI($this->uri);
$data = json_encode($data);
$uri->setPath($path);
$future = new HTTPSFuture($uri, $data);
if ($is_write) {
$future->setMethod('PUT');
}
if ($this->getTimeout()) {
$future->setTimeout($this->getTimeout());
}
list($body) = $future->resolvex();
if ($is_write) {
return null;
}
$body = json_decode($body, true);
if (!is_array($body)) {
throw new Exception("elasticsearch server returned invalid JSON!");
}
return $body;
}
}

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