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.android.tools.perflib.heap.Instance; 20 import com.sun.net.httpserver.HttpExchange; 21 import com.sun.net.httpserver.HttpHandler; 22 import java.awt.image.BufferedImage; 23 import java.io.IOException; 24 import java.io.OutputStream; 25 import java.io.PrintStream; 26 import javax.imageio.ImageIO; 27 28 class BitmapHandler implements HttpHandler { 29 private AhatSnapshot mSnapshot; 30 BitmapHandler(AhatSnapshot snapshot)31 public BitmapHandler(AhatSnapshot snapshot) { 32 mSnapshot = snapshot; 33 } 34 35 @Override handle(HttpExchange exchange)36 public void handle(HttpExchange exchange) throws IOException { 37 try { 38 Query query = new Query(exchange.getRequestURI()); 39 long id = query.getLong("id", 0); 40 BufferedImage bitmap = null; 41 Instance inst = mSnapshot.findInstance(id); 42 if (inst != null) { 43 bitmap = InstanceUtils.asBitmap(inst); 44 } 45 46 if (bitmap != null) { 47 exchange.getResponseHeaders().add("Content-Type", "image/png"); 48 exchange.sendResponseHeaders(200, 0); 49 OutputStream os = exchange.getResponseBody(); 50 ImageIO.write(bitmap, "png", os); 51 os.close(); 52 } else { 53 exchange.getResponseHeaders().add("Content-Type", "text/html"); 54 exchange.sendResponseHeaders(404, 0); 55 PrintStream ps = new PrintStream(exchange.getResponseBody()); 56 HtmlDoc doc = new HtmlDoc(ps, DocString.text("ahat"), DocString.uri("style.css")); 57 doc.big(DocString.text("No bitmap found for the given request.")); 58 doc.close(); 59 } 60 } catch (RuntimeException e) { 61 // Print runtime exceptions to standard error for debugging purposes, 62 // because otherwise they are swallowed and not reported. 63 System.err.println("Exception when handling " + exchange.getRequestURI() + ": "); 64 e.printStackTrace(); 65 throw e; 66 } 67 } 68 } 69