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1137
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1 package luan.webserver.handlers;
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2
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3 import java.io.Writer;
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4 import java.io.OutputStreamWriter;
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5 import java.io.PrintWriter;
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6 import java.io.IOException;
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7 import luan.webserver.Handler;
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8 import luan.webserver.Request;
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9 import luan.webserver.Response;
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10 import luan.webserver.ResponseOutputStream;
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11 import luan.webserver.Status;
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12
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13
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14 public final class SafeHandler implements Handler {
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15 private final Handler handler;
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16
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17 public SafeHandler(Handler handler) {
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18 this.handler = handler;
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19 }
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20
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21 public Response handle(Request request) {
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22 try {
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23
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24 Response response = handler.handle(request);
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25 if( response != null )
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26 return response;
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27
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28 } catch(RuntimeException e) {
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29
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30 Response response = new Response();
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31 response.status = Status.INTERNAL_SERVER_ERROR;
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32 response.headers.put( "Content-Type", "text/plain; charset=UTF-8" );
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33 PrintWriter writer = new PrintWriter( new ResponseOutputStream(response) );
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34 writer.write( "Internel Server Error\n\n" );
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35 e.printStackTrace(writer);
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36 writer.close();
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37 return response;
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38
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39 }
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40
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41 Response response = new Response();
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42 response.status = Status.NOT_FOUND;
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43 response.headers.put( "Content-Type", "text/plain; charset=UTF-8" );
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44 try {
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45 Writer writer = new OutputStreamWriter( new ResponseOutputStream(response) );
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46 writer.write( request.path+" not found\n" );
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47 writer.close();
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48 } catch(IOException e) {
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49 throw new RuntimeException(e);
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50 }
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51 return response;
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52 }
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53
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54 }
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