/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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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 com.sun.net.httpserver.HttpHandler;
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import de.uhilger.mediaz.App;
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import de.uhilger.mediaz.Server;
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import de.uhilger.mediaz.store.FileStorage;
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import de.uhilger.mediaz.entity.Ablageort;
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import de.uhilger.mediaz.entity.Entity;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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*
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* @author ulrich
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*/
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public class StorageHandler implements HttpHandler {
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private static final Logger logger = Logger.getLogger(StorageHandler.class.getName());
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/*
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HTTP GET: lies einen Ablageort und schreibe JSON
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HTTP PUT: schreibe einen neuen Ablageort auf die Platte
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HTTP POST: schreibe Aenderungen auf die Platte
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HTTP DELETE: loesche den Ablageort
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Beispiele:
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HTTP GET an /mz/api/store/Ablageort/Katalog
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liest den Ablageort namens "Katalog"
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HTTP POST an /mz/api/store/Ablageort
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schreibt den neuen Ablageort im Body der Anfrage (Neu)
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HTTP PUT an /mz/api/store/Ablageort
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sucht den Ablageort mit dem Namen laut Body der Anfrage
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und schreibt den Inhalt aus der Anfrage in die Datei (Aenderung)
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HTTP DELETE an /mz/api/store/Ablageort/Katalog
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löscht den Ablageort namens "Katalog"
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*/
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public static final String HTTP_GET = "GET";
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public static final String HTTP_PUT = "PUT";
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public static final String HTTP_POST = "POST";
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public static final String HTTP_DELETE = "DELETE";
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@Override
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public void handle(HttpExchange e) throws IOException {
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String method = e.getRequestMethod();
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String path = e.getRequestURI().toString();
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String[] elems = path.split(App.getRs(Server.RB_SLASH));
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String type = "";
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String elemName = "";
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String body = "";
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FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
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switch(method) {
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case HTTP_GET:
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type = elems[elems.length - 2];
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elemName = elems[elems.length - 1];
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//this.readFromFile(file);
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fs.read(type, elemName);
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break;
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case HTTP_PUT:
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type = elems[elems.length - 1];
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elemName = "noch bauen: lesen aus Body";
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break;
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case HTTP_POST:
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neu(e);
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break;
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case HTTP_DELETE:
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type = elems[elems.length - 2];
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elemName = elems[elems.length - 1];
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break;
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}
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String response = "Method: " + method + ", Path: " + path +
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", Type: " + type + ", elemName: " + elemName;
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logger.info(response);
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e.sendResponseHeaders(200, response.length());
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OutputStream os = e.getResponseBody();
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os.write(response.getBytes());
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os.close();
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}
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private void neu(HttpExchange e) throws IOException {
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String path = e.getRequestURI().toString();
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String[] elems = path.split(App.getRs(Server.RB_SLASH));
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String type = elems[elems.length - 1];
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String body = bodyLesen(e);
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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.INFO, "type: {0}", type);
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Object o = gson.fromJson(body, fs.typeFromName(type).getType());
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if(o instanceof Entity) {
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Object antwortObjekt = fs.write((Entity) o);
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if(antwortObjekt instanceof File) {
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File file = (File) antwortObjekt;
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logger.log(Level.INFO, "Datei {0} geschrieben.", file.getAbsolutePath());
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}
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}
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}
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private void aendern() {
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}
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private void loeschen() {
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}
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private Entity lesen() {
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return null;
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}
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private String bodyLesen(HttpExchange e) throws IOException {
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InputStream is = e.getRequestBody();
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BufferedReader r = new BufferedReader(new InputStreamReader(is));
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StringBuilder sb = new StringBuilder();
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String line = r.readLine();
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while(line != null) {
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sb.append(line);
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line = r.readLine();
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}
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r.close();
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// {"Ablageort":{"name":"test1","ort":"test2","url":"test3"}}
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//String data = sb.toString();
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//data = data.substring(1, data.length() - 1);
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//String json = data.substring(data.indexOf("{"));
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// {"name":"test1","ort":"test2","url":"test3"}
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String json = sb.toString();
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logger.log(Level.INFO, "json: {0}", json);
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return json;
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}
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}
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