tango.git - Ulrich Hilger Code Repository

			@@ -21,17 +21,37 @@
			import com.sun.net.httpserver.HttpExchange;
			import de.uhilger.mediaz.App;
			import static de.uhilger.mediaz.App.RB_EP_LISTE;
			import static de.uhilger.mediaz.App.RB_EP_LISTE_ALLES;
			import de.uhilger.mediaz.Server;
			import static de.uhilger.mediaz.Server.RB_SLASH;
			import de.uhilger.mediaz.store.FileStorage;
			import de.uhilger.mediaz.entity.Entity;
			import de.uhilger.mediaz.entity.Geraet;
			import static de.uhilger.mediaz.store.FileStorage.ST_ABLAGEORT;
			import static de.uhilger.mediaz.store.FileStorage.ST_GERAET;
			import de.uhilger.mediaz.store.Storage;
			import java.io.IOException;
			import java.net.URI;
			import java.util.Iterator;
			import java.util.List;
			import java.util.logging.Level;
			import java.util.logging.Logger;

			import java.net.http.HttpClient;
			import java.net.http.HttpClient.Version;
			import java.net.http.HttpClient.Redirect;
			import java.net.http.HttpRequest;
			import java.net.http.HttpResponse;
			import java.net.http.HttpResponse.BodyHandlers;
			import java.time.Duration;
			import java.util.ArrayList;


			/**
			* HttpHandler fuer die Verwaltung von Entitaeten der Mediazentrale
			*
			* GET /mz/api/store/[typname]/[name]
			* GET /mz/api/store/[typname]/liste
			* GET /mz/api/store/[typname]/listealles (nur Typ Geraet)
			*
			* @author Ulrich Hilger
			* @version 1, 5.4.2021
			@@ -40,99 +60,10 @@

			private static final Logger logger = Logger.getLogger(StorageHandler.class.getName());


			/*
			Das REST-Muster fuer die Mediazentrale (Beispiel Ablageort):

			1. HTTP GET Ablageort/[Name] - Liefere den Ablageort namens [Name]
			2. HTTP GET Ablageort/liste/ - Liefere eine Liste mit Namen aller Ablageorte
			Es duerfen keine Elemente namens "liste" angelegt werden
			3. HTTP GET Ablageort/ - Liefere eine Liste aller Ablageort-Objekte als JSON
			4. HTTP PUT Ablageort/[Name] - Der Ablageort wird angelegt. Wenn er bereits existiert,
			wird er geändert. (im Falle einer Aenderung des Namens
			muss der alte Name im URL stehen und im Body die Aenderung)
			5. HTTP DELETE - loesche den Ablageort

			Beispiele:

			HTTP GET /mz/api/store/Ablageort/
			liefert alle Ablageort-Objekte

			HTTP GET /mz/api/store/Ablageort/liste/
			liefert eine Liste der Namen vorhandener Ablageorte

			HTTP GET /mz/api/store/Ablageort/[Name]
			liest den Ablageort namens [Name]

			HTTP PUT /mz/api/store/Ablageort/[Name]
			wenn [Name] existiert: Aenderung, sonst neu anlegen

			HTTP DELETE /mz/api/store/Ablageort/[Name]
			löscht den Ablageort namens [Name]

			*/

			/** Name der HTTP Methode GET */
			//public static final String HTTP_GET = "GET";

			/** Name der HTTP Methode PUT */
			//public static final String HTTP_PUT = "PUT";

			/** Name der HTTP Methode POST */
			//public static final String HTTP_POST = "POST";

			/** Name der HTTP Methode DELETE */
			//public static final String HTTP_DELETE = "DELETE";

			//public static final String EP_LISTE = "liste/";

			/*
			@Override
			public void handle(HttpExchange e) throws IOException {
			String method = e.getRequestMethod();
			String response = "";
			int code = 200;
			switch(method) {
			case HTTP_GET:
			String json = lesen(e);
			if(json != null) {
			response = json;
			} else {
			response = "nicht gefunden";
			code = 404;
			}
			break;

			case HTTP_PUT:
			response = put(e);
			break;

			case HTTP_POST:
			response = "nicht unterstuertzt.";
			code = 404;
			break;

			case HTTP_DELETE:
			boolean geloescht = loeschen(e);
			if(geloescht) {
			response = "geloescht";
			} else {
			response = "nicht geloescht";
			}
			break;
			}
			logger.fine(response);
			e.sendResponseHeaders(code, response.length());
			OutputStream os = e.getResponseBody();
			os.write(response.getBytes());
			os.close();
			}
			*/

			@Override
			protected String put(HttpExchange e) throws IOException {
			String path = e.getRequestURI().toString();
			String[] elems = path.split(App.getRs(Server.RB_SLASH));
			String[] elems = path.split(Server.SLASH);
			String type = elems[elems.length - 2];
			String elemName = elems[elems.length - 1]; // alter Name, wenn Aenderung
			if(!elemName.equalsIgnoreCase(App.getRs(RB_EP_LISTE))) {
			@@ -148,7 +79,7 @@
			} else {
			fs.write(entity, false);
			}
			return type + App.getRs(Server.RB_SLASH) + entity.getName();
			return type + Server.SLASH + entity.getName();
			} else {
			return "Ungueltiges Objekt im Body.";
			}
			@@ -159,23 +90,35 @@

			private boolean loeschen(HttpExchange e) {
			String path = e.getRequestURI().toString();
			String[] elems = path.split(App.getRs(Server.RB_SLASH));
			String[] elems = path.split(Server.SLASH);
			String type = elems[elems.length - 2];
			String elemName = elems[elems.length - 1];
			FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
			return fs.delete(type, elemName);
			}

			private String lesen(HttpExchange e) {
			private String lesen(HttpExchange e) throws IOException, InterruptedException {
			String path = e.getRequestURI().toString();
			String[] elems = path.split(App.getRs(Server.RB_SLASH));
			String[] elems = path.split(Server.SLASH);
			FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
			if(path.endsWith(App.getRs(RB_SLASH))) {
			if(path.endsWith(Server.SLASH)) {
			List list = null;
			if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE))) {
			if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE_ALLES))) {
			String type = elems[elems.length - 2];
			logger.fine(type);
			if(type.equalsIgnoreCase(ST_GERAET)) {
			list = collectDeviceStatus(fs, type);
			Gson gson = new Gson();
			Object o = gson.fromJson(bodyLesen(e), fs.typeFromName(type).getType());
			return gson.toJson(list);
			}
			} else if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE))) {
			String type = elems[elems.length - 2];
			logger.fine(type);
			list = fs.list(type);
			if(type.equalsIgnoreCase(ST_ABLAGEORT)) {
			list.add("Livestreams");
			}
			} else {
			String type = elems[elems.length - 1];
			logger.fine(type);
			@@ -191,7 +134,12 @@

			@Override
			public String get(HttpExchange e) {
			return lesen(e);
			try {
			return lesen(e);
			} catch (IOException \| InterruptedException ex) {
			Logger.getLogger(StorageHandler.class.getName()).log(Level.SEVERE, null, ex);
			return ex.getLocalizedMessage();
			}
			}

			@Override
			@@ -203,4 +151,38 @@
			public boolean delete(HttpExchange e) {
			return loeschen(e);
			}

			private List collectDeviceStatus(Storage fs, String type) throws IOException, InterruptedException {
			List list = fs.listObjects(type);
			List<Geraet> newList = new ArrayList();
			Iterator<Entity> i = list.iterator();
			while (i.hasNext()) {
			Entity entity = i.next();
			if (entity instanceof Geraet) {
			Geraet g = (Geraet) entity;
			String statusurl = g.getStatusUrl();
			logger.info(statusurl);

			HttpRequest request = HttpRequest.newBuilder()
			.uri(URI.create(statusurl))
			.build();
			HttpClient client = HttpClient.newBuilder()
			.version(Version.HTTP_1_1)
			.followRedirects(Redirect.NORMAL)
			.connectTimeout(Duration.ofSeconds(20))
			//.proxy(ProxySelector.of(new InetSocketAddress("proxy.example.com", 80)))
			//.authenticator(Authenticator.getDefault())
			.build();
			HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
			logger.finer(Integer.toString(response.statusCode()));
			logger.finer(response.body());
			// {"ison":false,"has_timer":false,"overpower":false}
			String[] parts = response.body().split(",")[0].split(":");
			logger.finer("ison: " + parts[1]);
			g.setStatus(Boolean.parseBoolean(parts[1]));
			newList.add(g);
			}
			}
			return newList;
			}
			}