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<?php |
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/** |
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* Setting some often needed namespace prefixes |
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*/ |
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EasyRdf\RdfNamespace::set('skosmos', 'http://purl.org/net/skosmos#'); |
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EasyRdf\RdfNamespace::set('skosext', 'http://purl.org/finnonto/schema/skosext#'); |
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EasyRdf\RdfNamespace::delete('geo'); |
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EasyRdf\RdfNamespace::set('wgs84', 'http://www.w3.org/2003/01/geo/wgs84_pos#'); |
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EasyRdf\RdfNamespace::set('isothes', 'http://purl.org/iso25964/skos-thes#'); |
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EasyRdf\RdfNamespace::set('mads', 'http://www.loc.gov/mads/rdf/v1#'); |
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EasyRdf\RdfNamespace::set('wd', 'http://www.wikidata.org/entity/'); |
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EasyRdf\RdfNamespace::set('wdt', 'http://www.wikidata.org/prop/direct/'); |
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/** |
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* GlobalConfig provides access to the Skosmos configuration in config.ttl. |
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*/ |
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class GlobalConfig extends BaseConfig { |
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/** Cache reference */ |
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private $cache; |
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/** Location of the configuration file. Used for caching. */ |
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private $filePath; |
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/** Namespaces from vocabularies configuration file. */ |
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private $namespaces; |
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/** EasyRdf\Graph graph */ |
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private $graph; |
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/** |
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* @var int the time the config file was last modified |
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*/ |
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private $configModifiedTime = null; |
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public function __construct($config_name='/../config.ttl') |
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{ |
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$this->cache = new Cache(); |
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try { |
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$this->filePath = realpath( dirname(__FILE__) . $config_name ); |
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if (!file_exists($this->filePath)) { |
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throw new Exception('config.ttl file is missing, please provide one.'); |
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} |
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$this->initializeConfig(); |
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} catch (Exception $e) { |
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echo "Error: " . $e->getMessage(); |
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return; |
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} |
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} |
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public function getCache() |
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{ |
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return $this->cache; |
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} |
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/** |
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* @return int the time the config file was last modified |
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*/ |
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public function getConfigModifiedTime() |
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{ |
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return $this->configModifiedTime; |
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} |
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/** |
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* Initialize configuration, reading the configuration file from the disk, |
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* and creating the graph and resources objects. Uses a cache if available, |
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* in order to avoid re-loading the complete configuration on each request. |
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*/ |
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private function initializeConfig() |
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{ |
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try { |
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// retrieve last modified time for config file (filemtime returns int|bool!) |
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$configModifiedTime = filemtime($this->filePath); |
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if (!is_bool($configModifiedTime)) { |
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$this->configModifiedTime = $configModifiedTime; |
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} |
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// use APC user cache to store parsed config.ttl configuration |
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if ($this->cache->isAvailable() && !is_null($this->configModifiedTime)) { |
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// @codeCoverageIgnoreStart |
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$key = realpath($this->filePath) . ", " . $this->configModifiedTime; |
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$nskey = "namespaces of " . $key; |
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$this->graph = $this->cache->fetch($key); |
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$this->namespaces = $this->cache->fetch($nskey); |
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if ($this->graph && $this->namespaces) { // found in cache |
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$this->resource = $this->configResource($this->graph, "cache"); |
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} else { |
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$this->parseConfig($this->filePath); |
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$this->cache->store($key, $this->graph); |
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$this->cache->store($nskey, $this->namespaces); |
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} |
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// @codeCoverageIgnoreEnd |
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} else { // APC not available, parse on every request |
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$this->parseConfig($this->filePath); |
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} |
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$this->initializeNamespaces(); |
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} catch (Exception $e) { |
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echo "Error: " . $e->getMessage(); |
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} |
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} |
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/** |
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* Ensure there is exactely one skosmos:Configuration and return it. |
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*/ |
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private function configResource($graph, $source) { |
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$configResources = $graph->allOfType("skosmos:Configuration"); |
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if (is_null($configResources) || !is_array($configResources) || count($configResources) !== 1) { |
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throw new Exception("$source must have exactly one skosmos:Configuration"); |
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} |
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return $configResources[0]; |
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} |
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/** |
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* Retrieves, parses and includes configuration in existing configuration. |
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* @param \EasyRdf\Resource URL or file of configuration in Turtle syntax. |
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*/ |
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private function includeConfig($location) { |
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$location = $location->getUri(); |
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if (str_starts_with($location, "http://") || str_starts_with($location, "https://")) { |
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$ch = curl_init($location); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: text/turtle')); |
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$turtle = curl_exec($ch); |
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); |
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if ($httpCode != 200 && $httpCode != 303) { |
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throw new Exception("Failed to include configuration from $location"); |
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} |
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curl_close($ch); |
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} else { |
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if (file_exists($location)) { |
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$turtle = file_get_contents($location); |
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} else { |
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throw new Exception("Included config file $location does not exist!"); |
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} |
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} |
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$parser = new SkosmosTurtleParser(); |
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try { |
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$graph = $parser->parseGraph($turtle, $location); |
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} catch (Exception $e) { |
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throw new Exception("Failed to parse $location: " . $e->getMessage()); |
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} |
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$configResource = $this->configResource($graph, $location); |
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foreach($graph->properties($configResource) as $property) { |
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foreach($configResource->all($property) as $value) { |
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$this->graph->add($this->resource, $property, $value); |
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} |
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} |
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} |
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/** |
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* Parses configuration from the config.ttl file |
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* @param string $filename path to config.ttl file |
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* @throws \EasyRdf\Exception |
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*/ |
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private function parseConfig($filename) |
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{ |
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$parser = new SkosmosTurtleParser(); |
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$this->graph = $parser->parseGraph(file_get_contents($filename), $filename); |
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$this->namespaces = $parser->getNamespaces(); |
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$this->resource = $this->configResource($this->graph, $filename); |
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$includes = $this->graph->allResources($this->resource, "skosmos:includeConfig"); |
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foreach($includes as $location) { |
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$this->includeConfig($location); |
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} |
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} |
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/** |
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* Returns the graph created after parsing the configuration file. |
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* @return \EasyRdf\Graph |
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*/ |
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public function getGraph() |
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{ |
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return $this->graph; |
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} |
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/** |
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* Registers RDF namespaces from the config.ttl file for use by EasyRdf (e.g. serializing) |
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*/ |
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private function initializeNamespaces() { |
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foreach ($this->namespaces as $prefix => $fullUri) { |
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if ($prefix != '' && EasyRdf\RdfNamespace::get($prefix) === null) // if not already defined |
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{ |
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EasyRdf\RdfNamespace::set($prefix, $fullUri); |
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} |
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} |
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} |
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/** |
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* Returns the UI languages specified in the configuration or defaults to |
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* only show English |
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* @return array |
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*/ |
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public function getLanguages() |
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{ |
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$languageResources = $this->getResource()->getResource('skosmos:languages'); |
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if (!is_null($languageResources) && !empty($languageResources)) { |
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$languages = array(); |
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foreach ($languageResources as $languageResource) { |
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/** @var \EasyRdf\Literal $languageName */ |
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$languageName = $languageResource->getLiteral('rdfs:label'); |
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/** @var \EasyRdf\Literal $languageValue */ |
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$languageValue = $languageResource->getLiteral('rdf:value'); |
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if ($languageName && $languageValue) { |
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$languages[$languageName->getValue()] = $languageValue->getValue(); |
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} |
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} |
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return $languages; |
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} else { |
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return array('en' => 'en_GB.utf8'); |
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} |
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} |
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/** |
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* Returns the external HTTP request timeout in seconds or the default value |
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* of 5 seconds if not specified in the configuration. |
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* @return integer |
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*/ |
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public function getHttpTimeout() |
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{ |
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return $this->getLiteral('skosmos:httpTimeout', 5); |
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} |
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/** |
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* Returns the SPARQL HTTP request timeout in seconds or the default value |
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* of 20 seconds if not specified in the configuration. |
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* @return integer |
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*/ |
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public function getSparqlTimeout() |
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{ |
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return $this->getLiteral('skosmos:sparqlTimeout', 20); |
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} |
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/** |
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* Returns the sparql endpoint address defined in the configuration. If |
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* not then defaulting to http://localhost:3030/ds/sparql |
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* @return string |
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*/ |
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public function getDefaultEndpoint() |
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{ |
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$endpoint = $this->resource->get('skosmos:sparqlEndpoint'); |
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if ($endpoint) { |
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return $endpoint->getUri(); |
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} elseif (getenv('SKOSMOS_SPARQL_ENDPOINT')) { |
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return getenv('SKOSMOS_SPARQL_ENDPOINT'); |
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} else { |
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return 'http://localhost:3030/ds/sparql'; |
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} |
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} |
251
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252
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/** |
253
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* Returns the maximum number of items to return in transitive queries if defined |
254
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* in the configuration or the default value of 1000. |
255
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* @return integer |
256
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*/ |
257
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public function getDefaultTransitiveLimit() |
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{ |
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return $this->getLiteral('skosmos:transitiveLimit', 1000); |
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260
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} |
261
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262
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/** |
263
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* Returns the maximum number of items to load at a time if defined |
264
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* in the configuration or the default value of 20. |
265
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* @return integer |
266
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*/ |
267
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public function getSearchResultsSize() |
268
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{ |
269
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return $this->getLiteral('skosmos:searchResultsSize', 20); |
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270
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} |
271
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272
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/** |
273
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* Returns the configured location for the twig template cache and if not |
274
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* defined defaults to "/tmp/skosmos-template-cache" |
275
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* @return string |
276
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*/ |
277
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public function getTemplateCache() |
278
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{ |
279
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return $this->getLiteral('skosmos:templateCache', '/tmp/skosmos-template-cache'); |
280
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} |
281
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282
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/** |
283
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* Returns the defined sparql-query extension eg. "JenaText" or |
284
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* if not defined falling back to SPARQL 1.1 |
285
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* @return string |
286
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*/ |
287
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public function getDefaultSparqlDialect() |
288
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{ |
289
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return $this->getLiteral('skosmos:sparqlDialect', 'Generic'); |
290
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} |
291
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292
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/** |
293
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* Returns the feedback address defined in the configuration. |
294
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* @return string |
295
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*/ |
296
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public function getFeedbackAddress() |
297
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{ |
298
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return $this->getLiteral('skosmos:feedbackAddress', null); |
299
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} |
300
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301
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/** |
302
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* Returns the feedback sender address defined in the configuration. |
303
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* @return string |
304
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*/ |
305
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public function getFeedbackSender() |
306
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{ |
307
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return $this->getLiteral('skosmos:feedbackSender', null); |
308
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} |
309
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310
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/** |
311
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* Returns the feedback envelope sender address defined in the configuration. |
312
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* @return string |
313
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*/ |
314
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public function getFeedbackEnvelopeSender() |
315
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{ |
316
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return $this->getLiteral('skosmos:feedbackEnvelopeSender', null); |
317
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} |
318
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319
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/** |
320
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* Returns true if exception logging has been configured. |
321
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* @return boolean |
322
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*/ |
323
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public function getLogCaughtExceptions() |
324
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{ |
325
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return $this->getBoolean('skosmos:logCaughtExceptions', FALSE); |
326
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} |
327
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328
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/** |
329
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* Returns true if browser console logging has been enabled, |
330
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* @return boolean |
331
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*/ |
332
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public function getLoggingBrowserConsole() |
333
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{ |
334
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return $this->getBoolean('skosmos:logBrowserConsole', FALSE); |
335
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} |
336
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337
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/** |
338
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* Returns the name of a log file if configured, or NULL otherwise. |
339
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* @return string |
340
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*/ |
341
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public function getLoggingFilename() |
342
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{ |
343
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return $this->getLiteral('skosmos:logFileName', null); |
344
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} |
345
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346
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/** |
347
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* @return string |
348
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*/ |
349
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public function getServiceName() |
350
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{ |
351
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return $this->getLiteral('skosmos:serviceName', 'Skosmos'); |
352
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} |
353
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354
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/** |
355
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* @return string |
356
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*/ |
357
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public function getCustomCss() |
358
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{ |
359
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return $this->getLiteral('skosmos:customCss', null); |
360
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} |
361
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362
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/** |
363
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* @return boolean |
364
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*/ |
365
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public function getUiLanguageDropdown() |
366
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{ |
367
|
|
|
return $this->getBoolean('skosmos:uiLanguageDropdown', FALSE); |
368
|
|
|
} |
369
|
|
|
|
370
|
|
|
/** |
371
|
|
|
* @return string |
372
|
|
|
*/ |
373
|
|
|
public function getBaseHref() |
374
|
|
|
{ |
375
|
|
|
return $this->getLiteral('skosmos:baseHref', null); |
376
|
|
|
} |
377
|
|
|
|
378
|
|
|
/** |
379
|
|
|
* @return array |
380
|
|
|
*/ |
381
|
|
|
public function getGlobalPlugins() |
382
|
|
|
{ |
383
|
|
|
$globalPlugins = array(); |
384
|
|
|
$globalPluginsResource = $this->getResource()->getResource("skosmos:globalPlugins"); |
385
|
|
|
if ($globalPluginsResource) { |
|
|
|
|
386
|
|
|
foreach ($globalPluginsResource as $resource) { |
387
|
|
|
$globalPlugins[] = $resource->getValue(); |
388
|
|
|
} |
389
|
|
|
} |
390
|
|
|
return $globalPlugins; |
391
|
|
|
} |
392
|
|
|
|
393
|
|
|
/** |
394
|
|
|
* @return boolean |
395
|
|
|
*/ |
396
|
|
|
public function getHoneypotEnabled() |
397
|
|
|
{ |
398
|
|
|
return $this->getBoolean('skosmos:uiHoneypotEnabled', TRUE); |
399
|
|
|
} |
400
|
|
|
|
401
|
|
|
/** |
402
|
|
|
* @return integer |
403
|
|
|
*/ |
404
|
|
|
public function getHoneypotTime() |
405
|
|
|
{ |
406
|
|
|
return $this->getLiteral('skosmos:uiHoneypotTime', 5); |
|
|
|
|
407
|
|
|
} |
408
|
|
|
|
409
|
|
|
/** |
410
|
|
|
* @return boolean |
411
|
|
|
*/ |
412
|
|
|
public function getCollationEnabled() |
413
|
|
|
{ |
414
|
|
|
return $this->getBoolean('skosmos:sparqlCollationEnabled', FALSE); |
415
|
|
|
} |
416
|
|
|
} |
417
|
|
|
|