Subversion Repositories eFlore/Applications.moissonnage

Rev

Rev 26 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

<?php


class Moissonnage extends RestService {

        
        private $parametres = array();
        private $ressources = array();
        
        private $squeletteDossier = '';
        
        private $nomService = '';
        private $nomSource = '';
        
        private $cache;
        
        
        public function __construct() {
                $this->squeletteDossier = dirname(__FILE__) . DIRECTORY_SEPARATOR;
        }

        
        public function consulter($ressources, $parametres) {
                $resultat = '';
                $reponseHttp = new ReponseHttp();
                try {
                        $this->initialiserRessourcesEtParametres($ressources, $parametres);
                        $resultat = $this->traiterRessources();
                        $reponseHttp->setResultatService($resultat);
                } catch (Exception $e) {
                        $reponseHttp->ajouterErreur($e);
                }
                $reponseHttp->emettreLesEntetes();
                $corps = $reponseHttp->getCorps();
                return $corps;
        }
                
        private function initialiserRessourcesEtParametres($ressources, $parametres) {
                $this->ressources = $ressources;
                $this->parametres = $parametres;
        }
        
        private function traiterRessources() {
                $retour = '';
                if ($this->avoirRessources()) {
                        if ($this->avoirRessourceSource()) {
                                $this->initialiserSource();
                        if ($this->avoirRessourceService()) {
                                        $retour = $this->initialiserService();
                                }
                        }
                }
                return $retour;
        }
        
        private function avoirRessources() {
                $presenceDeRessources = false;
                if (isset($this->ressources) && count($this->ressources) > 0) {
                        $presenceDeRessources = true;
                } else {
                        $message = "Accès au service refusé : aucune ressource indiquée.\n"
                                . "Veuillez indiquer au moins une source de données à interroger"
                                . " et le type informations a renvoyer.";
                        $code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;
                        throw new Exception($message, $code);
                }
                return $presenceDeRessources;
        }
        
        private function avoirRessourceSource() {
                $presenceRessourceDemandee = false;
                $source = $this->ressources[0];
                $sourcesDispo = $this->recupererTableauConfig('sourcesDispo');
                if (in_array($source, $sourcesDispo)) {
                        $presenceRessourceDemandee = true;
                } else {
                        $message = "La source de données '{$source}' n'est pas référencée dans nos services.\n"
                                . "Les sources disponibles sont les suivantes : " . implode(', ', $sourcesDispo) . ".\n";
                        $code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;
                        throw new Exception($message, $code);
                }
                return $presenceRessourceDemandee;
        }
        
        private function recupererTableauConfig($parametres) {
                $tableau = array();
                $tableauPartiel = explode(',', Config::get($parametres));
                $tableauPartiel = array_map('trim', $tableauPartiel);
                foreach ($tableauPartiel as $champ) {
                        if (strpos($champ, '=') === false) {
                                $tableau[] = $champ;
                        } else {
                                list($cle, $val) = explode('=', $champ);
                                $clePropre = trim($cle);
                                $valeurPropre = trim($val);
                                $tableau[$clePropre] = $valeurPropre;
                        }
                }
                return $tableau;
        }
        
        private function initialiserSource() {
                $this->chargerNomSource();
                $this->chargerConfigSource();
        
                // php5.3 : Enregistrement en première position des autoload de la méthode gérant les classes des services
                if (phpversion() < 5.3) {
                        spl_autoload_register(array($this, 'chargerClasseSource'));
                } else {
                        spl_autoload_register(array($this, 'chargerClasseSource'), true , true);
                }
        }
        
        private function chargerNomSource() {
                $this->nomSource = $this->ressources[0];
        }
        
        private function chargerConfigSource() {
                $source = $this->nomSource;
                $chemin = Config::get('chemin_configurations')."config_$source.ini";
                Config::charger($chemin);
        }
        
        private function chargerClasseSource($classe) {
                if (class_exists($classe)) {
                        return null;
                }
                $cheminBiblio = Config::get('chemin_bibliotheque');
                $chemins = array();
                $chemins[] = $this->squeletteDossier . $this->nomSource . DIRECTORY_SEPARATOR;
                $chemins[] = $this->squeletteDossier . 'commun' . DIRECTORY_SEPARATOR;
                $chemins[] = $cheminBiblio;
                $chemins[] = $cheminBiblio . 'robots' . DIRECTORY_SEPARATOR;
                
                foreach ($chemins as $chemin) {
                        $chemin = $chemin . $classe . '.php';
                        if (file_exists($chemin)) {
                                require_once $chemin;
                                break;
                        }
                }
        }
        
        private function avoirRessourceService() {
                $presenceRessourceService = false;
                $servicesDispo = $this->recupererTableauConfig('servicesDispo');
                if (isset($this->ressources[1])) {
                        $service = $this->ressources[1];
                        if (in_array($service, $servicesDispo)) {
                                $presenceRessourceService = true;
                        } else {
                                $message = "La service demandé '$service' n'est pas disponible pour le projet "
                                        . $this->nomSource . " !\n"
                                        . "Les services disponibles sont : " . implode(', ', $servicesDispo);
                                $code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
                                throw new Exception($message, $code);
                        }
                } else {
                        $message = "Vous n'avez pas indiqué de service pour le projet {$this->nomSource} !\n"
                                . "Les services disponibles sont : " . implode(', ', $servicesDispo);
                        $code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;
                        throw new Exception($message, $code);
                }
                return $presenceRessourceService;
        }

        private function initialiserService() {
                $this->chargerNomDuService();
                $classe = $this->obtenirNomClasseService($this->nomService);
                $chemins = array();
                $chemins[] = $this->squeletteDossier . $this->nomSource . DS . $classe . '.php';
                $chemins[] = $this->squeletteDossier . 'commun'.DS.$classe.'.php';
        
                $retour = '';
                $service = null;
                foreach ($chemins as $chemin) {
                        if (file_exists($chemin)) {
                                $service = new $classe($this->getBdd());
                                $ressourcesPourService = $this->filtrerRessourcesPourService();
                                $this->cache = new CacheMoissonnage($service, $this->nomSource, $this->nomService,
                                        Config::get('cache'));
                                $retour = $this->cache->consulter($ressourcesPourService, $this->parametres);
                                if (get_class($retour) == 'Exception') {
                                        throw new Exception($retour->getMessage(), RestServeur::HTTP_CODE_MAUVAISE_REQUETE);
                                }
                        }
                }
                if (is_null($service)) {
                        $message = "La service demandé '{$this->nomService}' n'existe pas dans le projet {$this->nomSource} !";
                        $code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
                        throw new Exception($message, $code);
                }
                return $retour;
        }
        
        private function chargerNomDuService() {
                $this->nomService = $this->ressources[1];
        }
        
        private function obtenirNomClasseService($mot) {
                $classeNom = str_replace(' ', '', ucwords(strtolower(str_replace('-', ' ', $mot))));
                return $classeNom;
        }
        
        private function filtrerRessourcesPourService() {
                $ressourcesPourService = array();
                $nbreDeRessources = count($this->ressources);
                for ($i = 2; $i < $nbreDeRessources; $i++) {
                        $ressourcesPourService[] = $this->ressources[$i];
                }
                return $ressourcesPourService;
        }
        
}

?>