1 | package omq.common.util; |
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2 | |
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3 | import java.io.IOException; |
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4 | import java.util.Properties; |
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5 | |
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6 | import org.apache.log4j.Logger; |
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7 | |
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8 | import omq.common.broker.Broker; |
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9 | import omq.common.event.Event; |
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10 | import omq.common.message.Request; |
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11 | import omq.common.message.Response; |
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12 | import omq.common.util.Serializers.GsonImp; |
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13 | import omq.common.util.Serializers.ISerializer; |
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14 | import omq.common.util.Serializers.JavaImp; |
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15 | import omq.common.util.Serializers.KryoImp; |
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16 | import omq.exception.SerializerException; |
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17 | import omq.server.RemoteObject; |
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18 | |
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19 | /** |
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20 | * |
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21 | * @author Sergi Toda <sergi.toda@estudiants.urv.cat> |
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22 | * |
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23 | */ |
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24 | public class Serializer { |
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25 | private static final Logger logger = Logger.getLogger(Serializer.class.getName()); |
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26 | public static String kryo = "kryo"; |
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27 | public static String java = "java"; |
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28 | public static String gson = "gson"; |
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29 | |
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30 | // Client serializer |
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31 | public static ISerializer serializer; |
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32 | |
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33 | // Server serializers |
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34 | private static ISerializer kryoSerializer; |
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35 | private static ISerializer javaSerializer; |
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36 | private static ISerializer gsonSerializer; |
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37 | |
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38 | private static Boolean getEnableCompression() { |
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39 | Properties env = Broker.getEnvironment(); |
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40 | return Boolean.valueOf(env.getProperty(ParameterQueue.ENABLECOMPRESSION, "false")); |
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41 | } |
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42 | |
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43 | public static ISerializer getInstance() throws SerializerException { |
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44 | if (serializer == null) { |
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45 | try { |
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46 | Properties env = Broker.getEnvironment(); |
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47 | String className = env.getProperty(ParameterQueue.SERIALIZER_NAME, Serializer.java); |
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48 | |
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49 | if (className == null || className.isEmpty()) { |
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50 | throw new ClassNotFoundException("Class name is null or empty."); |
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51 | } |
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52 | |
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53 | serializer = getInstance(className); |
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54 | } catch (Exception ex) { |
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55 | throw new SerializerException(ex.getMessage(), ex); |
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56 | } |
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57 | } |
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58 | |
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59 | return serializer; |
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60 | } |
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61 | |
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62 | public static ISerializer getInstance(String type) throws SerializerException { |
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63 | if (kryo.equals(type)) { |
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64 | if (kryoSerializer == null) { |
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65 | kryoSerializer = new KryoImp(); |
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66 | } |
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67 | return kryoSerializer; |
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68 | } else if (gson.endsWith(type)) { |
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69 | if (gsonSerializer == null) { |
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70 | gsonSerializer = new GsonImp(); |
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71 | } |
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72 | return gsonSerializer; |
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73 | } else { |
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74 | if (javaSerializer == null) { |
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75 | javaSerializer = new JavaImp(); |
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76 | } |
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77 | return javaSerializer; |
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78 | } |
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79 | } |
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80 | |
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81 | public static byte[] serialize(String type, Object obj) throws SerializerException { |
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82 | ISerializer instance = getInstance(type); |
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83 | |
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84 | Boolean enableCompression = getEnableCompression(); |
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85 | if (enableCompression) { |
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86 | byte[] objSerialized = instance.serialize(obj); |
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87 | try { |
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88 | return Zipper.zip(objSerialized); |
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89 | } catch (IOException e) { |
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90 | throw new SerializerException(e.getMessage(), e); |
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91 | } |
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92 | } else { |
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93 | return instance.serialize(obj); |
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94 | } |
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95 | } |
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96 | |
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97 | // TODO: remove this function and think about the event serialization |
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98 | public static byte[] serialize(Object obj) throws SerializerException { |
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99 | ISerializer instance = getInstance(); |
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100 | |
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101 | Boolean enableCompression = getEnableCompression(); |
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102 | if (enableCompression) { |
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103 | byte[] objSerialized = instance.serialize(obj); |
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104 | try { |
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105 | return Zipper.zip(objSerialized); |
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106 | } catch (IOException e) { |
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107 | throw new SerializerException(e.getMessage(), e); |
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108 | } |
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109 | } else { |
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110 | return instance.serialize(obj); |
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111 | } |
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112 | } |
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113 | |
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114 | public static Request deserializeRequest(String type, byte[] bytes, RemoteObject obj) throws SerializerException { |
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115 | ISerializer instance = getInstance(type); |
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116 | |
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117 | Boolean enableCompression = getEnableCompression(); |
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118 | if (enableCompression) { |
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119 | try { |
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120 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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121 | return instance.deserializeRequest(unZippedBytes, obj); |
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122 | } catch (IOException e) { |
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123 | throw new SerializerException(e.getMessage(), e); |
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124 | } |
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125 | } else { |
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126 | return instance.deserializeRequest(bytes, obj); |
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127 | } |
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128 | } |
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129 | |
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130 | public static Response deserializeResponse(byte[] bytes, Class<?> type) throws SerializerException { |
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131 | ISerializer instance = getInstance(); |
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132 | |
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133 | Boolean enableCompression = getEnableCompression(); |
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134 | if (enableCompression) { |
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135 | try { |
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136 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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137 | return instance.deserializeResponse(unZippedBytes, type); |
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138 | } catch (IOException e) { |
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139 | throw new SerializerException(e.getMessage(), e); |
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140 | } |
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141 | } else { |
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142 | return instance.deserializeResponse(bytes, type); |
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143 | } |
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144 | } |
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145 | |
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146 | public static Event deserializeEvent(byte[] bytes) throws SerializerException { |
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147 | ISerializer instance = getInstance(); |
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148 | |
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149 | Boolean enableCompression = getEnableCompression(); |
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150 | if (enableCompression) { |
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151 | try { |
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152 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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153 | return instance.deserializeEvent(unZippedBytes); |
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154 | } catch (IOException e) { |
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155 | throw new SerializerException(e.getMessage(), e); |
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156 | } |
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157 | } else { |
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158 | return instance.deserializeEvent(bytes); |
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159 | } |
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160 | } |
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161 | |
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162 | public static void removeSerializers() { |
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163 | logger.warn("Removing serializers"); |
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164 | serializer = null; |
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165 | kryoSerializer = null; |
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166 | javaSerializer = null; |
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167 | gsonSerializer = null; |
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168 | } |
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169 | } |
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