| | |
| | | /* |
| | | * To change this license header, choose License Headers in Project Properties. |
| | | * To change this template file, choose Tools | Templates |
| | | * and open the template in the editor. |
| | | Mediazentrale - Personal Media Center |
| | | Copyright (C) 2021 Ulrich Hilger |
| | | |
| | | This program is free software: you can redistribute it and/or modify |
| | | it under the terms of the GNU Affero General Public License as |
| | | published by the Free Software Foundation, either version 3 of the |
| | | License, or (at your option) any later version. |
| | | |
| | | This program is distributed in the hope that it will be useful, |
| | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | | GNU Affero General Public License for more details. |
| | | |
| | | You should have received a copy of the GNU Affero General Public License |
| | | along with this program. If not, see <https://www.gnu.org/licenses/>. |
| | | */ |
| | | package de.uhilger.mediaz.api; |
| | | |
| | | import com.google.gson.Gson; |
| | | import com.sun.net.httpserver.HttpExchange; |
| | | import com.sun.net.httpserver.HttpHandler; |
| | | 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 de.uhilger.mediaz.store.FileStorage; |
| | | import de.uhilger.mediaz.entity.Ablageort; |
| | | import de.uhilger.mediaz.entity.Entity; |
| | | import java.io.BufferedReader; |
| | | import java.io.File; |
| | | 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.io.InputStream; |
| | | import java.io.InputStreamReader; |
| | | import java.io.OutputStream; |
| | | 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; |
| | | |
| | | |
| | | /** |
| | | * |
| | | * @author ulrich |
| | | * 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 |
| | | */ |
| | | public class StorageHandler implements HttpHandler { |
| | | public class StorageHandler extends AbstractHandler { |
| | | |
| | | private static final Logger logger = Logger.getLogger(StorageHandler.class.getName()); |
| | | |
| | | @Override |
| | | protected String put(HttpExchange e) throws IOException { |
| | | String path = e.getRequestURI().toString(); |
| | | 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))) { |
| | | FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
| | | Gson gson = new Gson(); |
| | | logger.log(Level.FINE, "type: {0}, token: {1}", new Object[]{type, fs.typeFromName(type).getType().getTypeName()}); |
| | | Object o = gson.fromJson(bodyLesen(e), fs.typeFromName(type).getType()); |
| | | if(o instanceof Entity) { |
| | | Entity entity = (Entity) o; |
| | | if(fs.exists(type, elemName)) { |
| | | fs.delete(type, elemName); |
| | | fs.write(entity, true); |
| | | } else { |
| | | fs.write(entity, false); |
| | | } |
| | | return type + Server.SLASH + entity.getName(); |
| | | } else { |
| | | return "Ungueltiges Objekt im Body."; |
| | | } |
| | | } else { |
| | | return "Ungueltiger Elementname: " + App.getRs(RB_EP_LISTE); |
| | | } |
| | | } |
| | | |
| | | /* |
| | | private boolean loeschen(HttpExchange e) { |
| | | String path = e.getRequestURI().toString(); |
| | | 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); |
| | | } |
| | | |
| | | HTTP GET: lies einen Ablageort und schreibe JSON |
| | | HTTP PUT: schreibe einen neuen Ablageort auf die Platte |
| | | HTTP POST: schreibe Aenderungen auf die Platte |
| | | HTTP DELETE: loesche den Ablageort |
| | | private String lesen(HttpExchange e) throws IOException, InterruptedException { |
| | | String path = e.getRequestURI().toString(); |
| | | String[] elems = path.split(Server.SLASH); |
| | | FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
| | | if(path.endsWith(Server.SLASH)) { |
| | | List list = null; |
| | | 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); |
| | | list = fs.listObjects(type); |
| | | } |
| | | return jsonWithEnclosingType(list); |
| | | } else { |
| | | String type = elems[elems.length - 2]; |
| | | String elemName = elems[elems.length - 1]; |
| | | return fs.readJson(type, elemName); |
| | | } |
| | | } |
| | | |
| | | Beispiele: |
| | | |
| | | HTTP GET an /mz/api/store/Ablageort/Katalog |
| | | liest den Ablageort namens "Katalog" |
| | | |
| | | HTTP POST an /mz/api/store/Ablageort |
| | | schreibt den neuen Ablageort im Body der Anfrage (Neu) |
| | | |
| | | HTTP PUT an /mz/api/store/Ablageort |
| | | sucht den Ablageort mit dem Namen laut Body der Anfrage |
| | | und schreibt den Inhalt aus der Anfrage in die Datei (Aenderung) |
| | | |
| | | HTTP DELETE an /mz/api/store/Ablageort/Katalog |
| | | löscht den Ablageort namens "Katalog" |
| | | |
| | | */ |
| | | |
| | | public static final String HTTP_GET = "GET"; |
| | | public static final String HTTP_PUT = "PUT"; |
| | | public static final String HTTP_POST = "POST"; |
| | | public static final String HTTP_DELETE = "DELETE"; |
| | | @Override |
| | | public String get(HttpExchange e) { |
| | | try { |
| | | return lesen(e); |
| | | } catch (IOException | InterruptedException ex) { |
| | | Logger.getLogger(StorageHandler.class.getName()).log(Level.SEVERE, null, ex); |
| | | return ex.getLocalizedMessage(); |
| | | } |
| | | } |
| | | |
| | | @Override |
| | | public void handle(HttpExchange e) throws IOException { |
| | | String method = e.getRequestMethod(); |
| | | String path = e.getRequestURI().toString(); |
| | | String[] elems = path.split(App.getRs(Server.RB_SLASH)); |
| | | String type = ""; |
| | | String elemName = ""; |
| | | String body = ""; |
| | | FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
| | | switch(method) { |
| | | case HTTP_GET: |
| | | type = elems[elems.length - 2]; |
| | | elemName = elems[elems.length - 1]; |
| | | //this.readFromFile(file); |
| | | fs.read(type, elemName); |
| | | break; |
| | | |
| | | case HTTP_PUT: |
| | | type = elems[elems.length - 1]; |
| | | elemName = "noch bauen: lesen aus Body"; |
| | | break; |
| | | |
| | | case HTTP_POST: |
| | | neu(e); |
| | | break; |
| | | |
| | | case HTTP_DELETE: |
| | | type = elems[elems.length - 2]; |
| | | elemName = elems[elems.length - 1]; |
| | | break; |
| | | } |
| | | |
| | | |
| | | String response = "Method: " + method + ", Path: " + path + |
| | | ", Type: " + type + ", elemName: " + elemName; |
| | | logger.info(response); |
| | | e.sendResponseHeaders(200, response.length()); |
| | | OutputStream os = e.getResponseBody(); |
| | | os.write(response.getBytes()); |
| | | os.close(); |
| | | public String post(HttpExchange e) { |
| | | return "nicht unterstuetzt"; |
| | | } |
| | | |
| | | @Override |
| | | public boolean delete(HttpExchange e) { |
| | | return loeschen(e); |
| | | } |
| | | |
| | | private void neu(HttpExchange e) throws IOException { |
| | | String path = e.getRequestURI().toString(); |
| | | String[] elems = path.split(App.getRs(Server.RB_SLASH)); |
| | | String type = elems[elems.length - 1]; |
| | | String body = bodyLesen(e); |
| | | FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF))); |
| | | Gson gson = new Gson(); |
| | | logger.log(Level.INFO, "type: {0}", type); |
| | | Object o = gson.fromJson(body, fs.typeFromName(type).getType()); |
| | | if(o instanceof Entity) { |
| | | Object antwortObjekt = fs.write((Entity) o); |
| | | if(antwortObjekt instanceof File) { |
| | | File file = (File) antwortObjekt; |
| | | logger.log(Level.INFO, "Datei {0} geschrieben.", file.getAbsolutePath()); |
| | | 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); |
| | | } |
| | | } |
| | | } |
| | | |
| | | private void aendern() { |
| | | |
| | | } |
| | | |
| | | private void loeschen() { |
| | | |
| | | } |
| | | |
| | | private Entity lesen() { |
| | | return null; |
| | | } |
| | | |
| | | |
| | | private String bodyLesen(HttpExchange e) throws IOException { |
| | | InputStream is = e.getRequestBody(); |
| | | BufferedReader r = new BufferedReader(new InputStreamReader(is)); |
| | | StringBuilder sb = new StringBuilder(); |
| | | String line = r.readLine(); |
| | | while(line != null) { |
| | | sb.append(line); |
| | | line = r.readLine(); |
| | | } |
| | | r.close(); |
| | | // {"Ablageort":{"name":"test1","ort":"test2","url":"test3"}} |
| | | //String data = sb.toString(); |
| | | //data = data.substring(1, data.length() - 1); |
| | | //String json = data.substring(data.indexOf("{")); |
| | | // {"name":"test1","ort":"test2","url":"test3"} |
| | | String json = sb.toString(); |
| | | logger.log(Level.INFO, "json: {0}", json); |
| | | return json; |
| | | return newList; |
| | | } |
| | | } |