1 | /**************************************************************** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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3 | * or more contributor license agreements. See the NOTICE file * |
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4 | * distributed with this work for additional information * |
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5 | * regarding copyright ownership. The ASF licenses this file * |
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6 | * to you under the Apache License, Version 2.0 (the * |
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7 | * "License"); you may not use this file except in compliance * |
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8 | * with the License. You may obtain a copy of the License at * |
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9 | * * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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11 | * * |
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12 | * Unless required by applicable law or agreed to in writing, * |
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13 | * software distributed under the License is distributed on an * |
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14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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15 | * KIND, either express or implied. See the License for the * |
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16 | * specific language governing permissions and limitations * |
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17 | * under the License. * |
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18 | ****************************************************************/ |
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19 | |
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20 | package org.apache.james.mime4j; |
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21 | |
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22 | import java.io.ByteArrayInputStream; |
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23 | import java.io.ByteArrayOutputStream; |
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24 | import java.io.IOException; |
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25 | import java.io.InputStream; |
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26 | import java.io.OutputStream; |
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27 | import java.util.Random; |
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28 | |
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29 | import org.apache.commons.io.output.NullOutputStream; |
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30 | import org.apache.james.mime4j.codec.CodecUtil; |
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31 | import org.apache.james.mime4j.codec.QuotedPrintableInputStream; |
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32 | |
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33 | public class QuotedPrintableInputStreamBench { |
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34 | |
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35 | public static void main(String[] args) throws Exception { |
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36 | byte[] data = initData(2 * 1024 * 1024); |
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37 | byte[] encoded = encode(data); |
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38 | |
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39 | // decoder test to make sure everything is okay |
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40 | |
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41 | testDecode(data, encoded); |
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42 | |
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43 | // warmup |
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44 | |
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45 | OutputStream nullOut = new NullOutputStream(); |
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46 | |
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47 | for (int i = 0; i < 5; i++) { |
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48 | ByteArrayInputStream ed = new ByteArrayInputStream(encoded); |
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49 | InputStream in = new QuotedPrintableInputStream(ed); |
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50 | CodecUtil.copy(in, nullOut); |
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51 | } |
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52 | Thread.sleep(100); |
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53 | |
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54 | // test |
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55 | |
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56 | long t0 = System.currentTimeMillis(); |
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57 | |
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58 | final int repetitions = 50; |
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59 | for (int i = 0; i < repetitions; i++) { |
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60 | ByteArrayInputStream ed = new ByteArrayInputStream(encoded); |
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61 | InputStream in = new QuotedPrintableInputStream(ed); |
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62 | CodecUtil.copy(in, nullOut); |
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63 | } |
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64 | |
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65 | long dt = System.currentTimeMillis() - t0; |
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66 | long totalBytes = data.length * (long) repetitions; |
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67 | |
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68 | double mbPerSec = (totalBytes / 1024.0 / 1024) / (dt / 1000.0); |
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69 | |
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70 | System.out.println(dt + " ms"); |
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71 | System.out.println(totalBytes + " bytes"); |
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72 | System.out.println(mbPerSec + " mb/sec"); |
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73 | } |
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74 | |
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75 | private static byte[] initData(int size) { |
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76 | Random random = new Random(size); |
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77 | byte[] data = new byte[size]; |
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78 | random.nextBytes(data); |
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79 | return data; |
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80 | } |
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81 | |
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82 | private static byte[] encode(byte[] data) throws IOException { |
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83 | InputStream in = new ByteArrayInputStream(data); |
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84 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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85 | CodecUtil.encodeQuotedPrintableBinary(in, out); |
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86 | return out.toByteArray(); |
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87 | } |
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88 | |
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89 | private static void testDecode(byte[] data, final byte[] encoded) |
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90 | throws IOException { |
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91 | ByteArrayInputStream ed = new ByteArrayInputStream(encoded); |
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92 | InputStream in = new QuotedPrintableInputStream(ed); |
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93 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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94 | CodecUtil.copy(in, out); |
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95 | |
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96 | compare(data, out.toByteArray()); |
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97 | } |
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98 | |
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99 | private static void compare(byte[] expected, byte[] actual) { |
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100 | if (expected.length != actual.length) |
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101 | throw new AssertionError("length: " + expected.length + ", " |
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102 | + actual.length); |
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103 | |
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104 | for (int i = 0; i < expected.length; i++) |
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105 | if (expected[i] != actual[i]) |
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106 | throw new AssertionError("value @ " + i); |
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107 | } |
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108 | |
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109 | } |
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