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/* |
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Mediazentrale - Personal Media Center |
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Copyright (C) 2021 Ulrich Hilger |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Affero General Public License as |
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published by the Free Software Foundation, either version 3 of the |
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License, or (at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Affero General Public License for more details. |
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You should have received a copy of the GNU Affero General Public License |
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along with this program. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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package de.uhilger.mediaz.api; |
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import com.google.gson.Gson; |
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import com.sun.net.httpserver.HttpExchange; |
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import de.uhilger.mediaz.App; |
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import static de.uhilger.mediaz.App.RB_EP_LISTE; |
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import static de.uhilger.mediaz.App.RB_EP_LISTE_ALLES; |
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import de.uhilger.mediaz.Server; |
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import de.uhilger.mediaz.entity.Ablageort; |
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import de.uhilger.mediaz.store.FileStorage; |
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import de.uhilger.mediaz.entity.Entity; |
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import de.uhilger.mediaz.entity.Geraet; |
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import static de.uhilger.mediaz.store.FileStorage.ST_ABLAGEORT; |
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import static de.uhilger.mediaz.store.FileStorage.ST_GERAET; |
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import de.uhilger.mediaz.store.Storage; |
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import java.io.IOException; |
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import java.net.URI; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import java.net.http.HttpClient; |
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import java.net.http.HttpClient.Version; |
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import java.net.http.HttpClient.Redirect; |
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import java.net.http.HttpRequest; |
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import java.net.http.HttpResponse; |
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import java.net.http.HttpResponse.BodyHandlers; |
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import java.time.Duration; |
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import java.util.ArrayList; |
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/** |
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* HttpHandler fuer die Verwaltung von Entitaeten der Mediazentrale |
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* |
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* GET /mz/api/store/[typname]/[name] |
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* GET /mz/api/store/[typname]/liste |
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* GET /mz/api/store/[typname]/listealles (nur Typ Geraet) |
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* |
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* @author Ulrich Hilger |
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* @version 1, 5.4.2021 |
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*/ |
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public class StorageHandler extends AbstractHandler { |
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private static final Logger logger = Logger.getLogger(StorageHandler.class.getName()); |
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@Override |
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protected String put(HttpExchange e) throws IOException { |
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String path = e.getRequestURI().toString(); |
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String[] elems = path.split(Server.SLASH); |
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String type = elems[elems.length - 2]; |
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String elemName = elems[elems.length - 1]; // alter Name, wenn Aenderung |
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if(!elemName.equalsIgnoreCase(App.getRs(RB_EP_LISTE))) { |
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FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
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Gson gson = new Gson(); |
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logger.log(Level.FINE, "type: {0}, token: {1}", new Object[]{type, fs.typeFromName(type).getType().getTypeName()}); |
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Object o = gson.fromJson(bodyLesen(e), fs.typeFromName(type).getType()); |
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if(o instanceof Entity) { |
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Entity entity = (Entity) o; |
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if(fs.exists(type, elemName)) { // Aenderung |
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fs.delete(type, elemName); |
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// wenn Ablageort, hier noch alten Kontext entfernen |
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if(type.equalsIgnoreCase(FileStorage.ST_ABLAGEORT)) { |
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Entity aoe = fs.read(type, elemName); |
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if(aoe instanceof Ablageort) { |
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Ablageort ablageort = (Ablageort) aoe; |
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App.getServer().ablageortEntfernen(ablageort.getUrl()); |
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} |
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} |
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fs.write(entity, true); |
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// wenn Ablageort, hier noch neuen Kontext anlegen |
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if(type.equalsIgnoreCase(FileStorage.ST_ABLAGEORT)) { |
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if(entity instanceof Ablageort) { |
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Ablageort ablageort = (Ablageort) entity; |
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App.getServer().ablageortHinzufuegen(ablageort); |
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} |
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} |
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} else { // Neu |
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fs.write(entity, false); |
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// wenn Ablageort, hier noch neuen Kontext anlegen |
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if(type.equalsIgnoreCase(FileStorage.ST_ABLAGEORT)) { |
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if(entity instanceof Ablageort) { |
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Ablageort ablageort = (Ablageort) entity; |
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App.getServer().ablageortHinzufuegen(ablageort); |
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} |
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} |
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} |
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return type + Server.SLASH + entity.getName(); |
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} else { |
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return "Ungueltiges Objekt im Body."; |
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} |
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} else { |
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return "Ungueltiger Elementname: " + App.getRs(RB_EP_LISTE); |
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} |
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} |
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private boolean loeschen(HttpExchange e) { |
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String path = e.getRequestURI().toString(); |
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String[] elems = path.split(Server.SLASH); |
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String type = elems[elems.length - 2]; |
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String elemName = elems[elems.length - 1]; |
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FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
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if(type.equalsIgnoreCase(FileStorage.ST_ABLAGEORT)) { |
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// im laufenden Server den Context entfernen |
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Entity entity = fs.read(type, elemName); |
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if(entity instanceof Ablageort) { |
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Ablageort ablageort = (Ablageort) entity; |
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App.getServer().ablageortEntfernen(ablageort.getUrl()); |
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} |
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} |
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return fs.delete(type, elemName); |
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} |
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private String lesen(HttpExchange e) throws IOException, InterruptedException { |
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String path = e.getRequestURI().toString(); |
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String[] elems = path.split(Server.SLASH); |
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FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
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if(path.endsWith(Server.SLASH)) { |
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List list = null; |
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if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE_ALLES))) { |
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String type = elems[elems.length - 2]; |
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logger.fine(type); |
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if(type.equalsIgnoreCase(ST_GERAET)) { |
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list = collectDeviceStatus(fs, type); |
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Gson gson = new Gson(); |
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Object o = gson.fromJson(bodyLesen(e), fs.typeFromName(type).getType()); |
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return gson.toJson(list); |
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} |
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} else if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE))) { |
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String type = elems[elems.length - 2]; |
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logger.fine(type); |
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list = fs.list(type); |
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if(type.equalsIgnoreCase(ST_ABLAGEORT)) { |
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list.add("Livestreams"); |
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} |
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} else { |
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String type = elems[elems.length - 1]; |
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logger.fine(type); |
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list = fs.listObjects(type); |
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} |
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return jsonWithEnclosingType(list); |
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} else { |
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String type = elems[elems.length - 2]; |
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String elemName = elems[elems.length - 1]; |
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return fs.readJson(type, elemName); |
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} |
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} |
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@Override |
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public String get(HttpExchange e) { |
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try { |
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return lesen(e); |
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} catch (IOException | InterruptedException ex) { |
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Logger.getLogger(StorageHandler.class.getName()).log(Level.SEVERE, null, ex); |
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return ex.getLocalizedMessage(); |
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} |
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} |
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@Override |
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public String post(HttpExchange e) { |
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return "nicht unterstuetzt"; |
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} |
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@Override |
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public boolean delete(HttpExchange e) { |
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return loeschen(e); |
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} |
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private List collectDeviceStatus(Storage fs, String type) throws IOException, InterruptedException { |
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List list = fs.listObjects(type); |
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List<Geraet> newList = new ArrayList(); |
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Iterator<Entity> i = list.iterator(); |
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while (i.hasNext()) { |
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Entity entity = i.next(); |
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if (entity instanceof Geraet) { |
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Geraet g = (Geraet) entity; |
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String statusurl = g.getStatusUrl(); |
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logger.info(statusurl); |
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HttpRequest request = HttpRequest.newBuilder() |
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.uri(URI.create(statusurl)) |
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.build(); |
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HttpClient client = HttpClient.newBuilder() |
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.version(Version.HTTP_1_1) |
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.followRedirects(Redirect.NORMAL) |
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.connectTimeout(Duration.ofSeconds(20)) |
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//.proxy(ProxySelector.of(new InetSocketAddress("proxy.example.com", 80))) |
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//.authenticator(Authenticator.getDefault()) |
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.build(); |
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HttpResponse<String> response = client.send(request, BodyHandlers.ofString()); |
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logger.finer(Integer.toString(response.statusCode())); |
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logger.finer(response.body()); |
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// {"ison":false,"has_timer":false,"overpower":false} |
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String[] parts = response.body().split(",")[0].split(":"); |
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logger.finer("ison: " + parts[1]); |
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g.setStatus(Boolean.parseBoolean(parts[1])); |
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newList.add(g); |
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} |
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} |
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return newList; |
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} |
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} |