| commit | author | age | ||
| 86bbf7 | 1 | /* |
| b56bb3 | 2 | Mediazentrale - Personal Media Center |
| U | 3 | Copyright (C) 2021 Ulrich Hilger |
| 4 | ||
| 5 | This program is free software: you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Affero General Public License as | |
| 7 | published by the Free Software Foundation, either version 3 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Affero General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Affero General Public License | |
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| 86bbf7 | 17 | */ |
| U | 18 | package de.uhilger.mediaz.api; |
| 19 | ||
| 8d7d35 | 20 | import com.sun.net.httpserver.HttpExchange; |
| U | 21 | import com.sun.net.httpserver.HttpHandler; |
| 22 | import java.io.BufferedReader; | |
| 23 | import java.io.IOException; | |
| 24 | import java.io.InputStream; | |
| 25 | import java.io.InputStreamReader; | |
| 26 | import java.io.OutputStream; | |
| 27 | import java.util.logging.Logger; | |
| 28 | ||
| 86bbf7 | 29 | |
| U | 30 | /** |
| 31 | * | |
| b56bb3 | 32 | * @author Ulrich Hilger |
| U | 33 | * @version 1, 8.4.2021 |
| 86bbf7 | 34 | */ |
| 8d7d35 | 35 | public abstract class AbstractHandler extends JsonHelper implements HttpHandler { |
| 86bbf7 | 36 | |
| 8d7d35 | 37 | private static final Logger logger = Logger.getLogger(AbstractHandler.class.getName()); |
| U | 38 | |
| 39 | /** Name der HTTP Methode GET */ | |
| 40 | public static final String HTTP_GET = "GET"; | |
| 41 | ||
| 42 | /** Name der HTTP Methode PUT */ | |
| 43 | public static final String HTTP_PUT = "PUT"; | |
| 44 | ||
| 45 | /** Name der HTTP Methode POST */ | |
| 46 | public static final String HTTP_POST = "POST"; | |
| 47 | ||
| 48 | /** Name der HTTP Methode DELETE */ | |
| 49 | public static final String HTTP_DELETE = "DELETE"; | |
| 50 | ||
| 51 | @Override | |
| 52 | public void handle(HttpExchange e) throws IOException { | |
| 53 | String method = e.getRequestMethod(); | |
| 54 | String response = ""; | |
| 55 | int code = 200; | |
| 56 | switch(method) { | |
| 57 | case HTTP_GET: | |
| 58 | String json = get(e); | |
| 59 | if(json != null) { | |
| 60 | response = json; | |
| 61 | } else { | |
| 62 | response = "nicht gefunden"; | |
| 63 | code = 404; | |
| 64 | } | |
| 65 | break; | |
| 66 | ||
| 67 | case HTTP_PUT: | |
| 68 | response = put(e); | |
| 69 | break; | |
| 70 | ||
| 71 | case HTTP_POST: | |
| 72 | response = post(e); | |
| 73 | code = 404; | |
| 74 | break; | |
| 75 | ||
| 76 | case HTTP_DELETE: | |
| 77 | boolean geloescht = delete(e); | |
| 78 | if(geloescht) { | |
| 79 | response = "geloescht"; | |
| 80 | } else { | |
| 81 | response = "nicht geloescht"; | |
| 82 | } | |
| 83 | break; | |
| 84 | } | |
| 85 | e.sendResponseHeaders(code, response.length()); | |
| 86 | OutputStream os = e.getResponseBody(); | |
| 87 | os.write(response.getBytes()); | |
| 88 | os.close(); | |
| 86bbf7 | 89 | } |
| U | 90 | |
| 8d7d35 | 91 | protected String bodyLesen(HttpExchange e) throws IOException { |
| U | 92 | InputStream is = e.getRequestBody(); |
| 93 | BufferedReader r = new BufferedReader(new InputStreamReader(is)); | |
| 86bbf7 | 94 | StringBuilder sb = new StringBuilder(); |
| 8d7d35 | 95 | String line = r.readLine(); |
| U | 96 | while(line != null) { |
| 97 | sb.append(line); | |
| 98 | line = r.readLine(); | |
| 99 | } | |
| 100 | r.close(); | |
| 101 | String json = sb.toString(); | |
| 102 | return json; | |
| 86bbf7 | 103 | } |
| 8d7d35 | 104 | |
| U | 105 | |
| 106 | protected abstract String get(HttpExchange e); | |
| 107 | protected abstract String put(HttpExchange e) throws IOException; | |
| 108 | protected abstract String post(HttpExchange e); | |
| 109 | protected abstract boolean delete(HttpExchange e); | |
| 86bbf7 | 110 | |
| U | 111 | } |
