1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.ahat;
18 
19 import com.google.common.io.ByteStreams;
20 import com.sun.net.httpserver.HttpHandler;
21 import com.sun.net.httpserver.HttpExchange;
22 import java.io.InputStream;
23 import java.io.IOException;
24 import java.io.OutputStream;
25 import java.io.PrintStream;
26 
27 // Handler that returns a static file included in ahat.jar.
28 class StaticHandler implements HttpHandler {
29   private String mResourceName;
30   private String mContentType;
31 
StaticHandler(String resourceName, String contentType)32   public StaticHandler(String resourceName, String contentType) {
33     mResourceName = resourceName;
34     mContentType = contentType;
35   }
36 
37   @Override
handle(HttpExchange exchange)38   public void handle(HttpExchange exchange) throws IOException {
39     ClassLoader loader = StaticHandler.class.getClassLoader();
40     InputStream is = loader.getResourceAsStream(mResourceName);
41     if (is == null) {
42       exchange.getResponseHeaders().add("Content-Type", "text/html");
43       exchange.sendResponseHeaders(404, 0);
44       PrintStream ps = new PrintStream(exchange.getResponseBody());
45       HtmlDoc doc = new HtmlDoc(ps, DocString.text("ahat"), DocString.uri("style.css"));
46       doc.big(DocString.text("Resource not found."));
47       doc.close();
48     } else {
49       exchange.getResponseHeaders().add("Content-Type", mContentType);
50       exchange.sendResponseHeaders(200, 0);
51       OutputStream os = exchange.getResponseBody();
52       ByteStreams.copy(is, os);
53       os.close();
54     }
55   }
56 }
57