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 omq.common.event.Event; |
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7 | import omq.common.message.Request; |
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8 | import omq.common.message.Response; |
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9 | import omq.common.util.Serializers.GsonImp; |
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10 | import omq.common.util.Serializers.ISerializer; |
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11 | import omq.common.util.Serializers.JavaImp; |
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12 | import omq.common.util.Serializers.KryoImp; |
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13 | import omq.exception.SerializerException; |
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14 | import omq.server.RemoteObject; |
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15 | |
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16 | /** |
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17 | * |
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18 | * @author Sergi Toda <sergi.toda@estudiants.urv.cat> |
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19 | * |
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20 | */ |
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21 | public class Serializer { |
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22 | // private static final Logger logger = |
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23 | // Logger.getLogger(Serializer.class.getName()); |
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24 | public static final String KRYO = "kryo"; |
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25 | public static final String JAVA = "java"; |
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26 | public static final String GSON = "gson"; |
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27 | |
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28 | // Client serializer |
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29 | public ISerializer serializer; |
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30 | |
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31 | // Server serializers |
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32 | private ISerializer kryoSerializer; |
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33 | private ISerializer javaSerializer; |
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34 | private ISerializer gsonSerializer; |
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35 | |
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36 | private Properties env; |
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37 | |
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38 | public Serializer(Properties env) { |
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39 | this.env = env; |
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40 | } |
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41 | |
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42 | private Boolean getEnableCompression() { |
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43 | return Boolean.valueOf(env.getProperty(ParameterQueue.ENABLECOMPRESSION, "false")); |
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44 | } |
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45 | |
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46 | public ISerializer getInstance() throws SerializerException { |
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47 | if (serializer == null) { |
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48 | try { |
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49 | String className = env.getProperty(ParameterQueue.SERIALIZER_NAME, Serializer.JAVA); |
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50 | |
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51 | if (className == null || className.isEmpty()) { |
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52 | throw new ClassNotFoundException("Class name is null or empty."); |
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53 | } |
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54 | |
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55 | serializer = getInstance(className); |
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56 | } catch (Exception ex) { |
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57 | throw new SerializerException(ex.getMessage(), ex); |
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58 | } |
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59 | } |
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60 | |
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61 | return serializer; |
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62 | } |
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63 | |
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64 | public ISerializer getInstance(String type) throws SerializerException { |
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65 | if (KRYO.equals(type)) { |
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66 | if (kryoSerializer == null) { |
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67 | kryoSerializer = new KryoImp(); |
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68 | } |
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69 | return kryoSerializer; |
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70 | } else if (GSON.equals(type)) { |
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71 | if (gsonSerializer == null) { |
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72 | gsonSerializer = new GsonImp(); |
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73 | } |
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74 | return gsonSerializer; |
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75 | } else if (JAVA.equals(type)) { |
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76 | if (javaSerializer == null) { |
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77 | javaSerializer = new JavaImp(); |
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78 | } |
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79 | return javaSerializer; |
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80 | } |
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81 | |
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82 | throw new SerializerException("Serializer not found."); |
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83 | } |
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84 | |
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85 | public byte[] serialize(String type, Object obj) throws SerializerException { |
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86 | ISerializer instance = getInstance(type); |
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87 | |
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88 | Boolean enableCompression = getEnableCompression(); |
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89 | if (enableCompression) { |
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90 | byte[] objSerialized = instance.serialize(obj); |
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91 | try { |
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92 | return Zipper.zip(objSerialized); |
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93 | } catch (IOException e) { |
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94 | throw new SerializerException(e.getMessage(), e); |
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95 | } |
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96 | } else { |
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97 | return instance.serialize(obj); |
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98 | } |
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99 | } |
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100 | |
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101 | // TODO: remove this function and think about the event serialization |
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102 | public byte[] serialize(Object obj) throws SerializerException { |
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103 | ISerializer instance = getInstance(); |
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104 | |
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105 | Boolean enableCompression = getEnableCompression(); |
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106 | if (enableCompression) { |
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107 | byte[] objSerialized = instance.serialize(obj); |
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108 | try { |
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109 | return Zipper.zip(objSerialized); |
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110 | } catch (IOException e) { |
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111 | throw new SerializerException(e.getMessage(), e); |
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112 | } |
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113 | } else { |
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114 | return instance.serialize(obj); |
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115 | } |
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116 | } |
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117 | |
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118 | public Request deserializeRequest(String type, byte[] bytes, RemoteObject obj) throws SerializerException { |
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119 | ISerializer instance = getInstance(type); |
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120 | |
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121 | Boolean enableCompression = getEnableCompression(); |
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122 | if (enableCompression) { |
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123 | try { |
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124 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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125 | return instance.deserializeRequest(unZippedBytes, obj); |
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126 | } catch (IOException e) { |
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127 | throw new SerializerException(e.getMessage(), e); |
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128 | } |
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129 | } else { |
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130 | return instance.deserializeRequest(bytes, obj); |
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131 | } |
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132 | } |
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133 | |
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134 | public Response deserializeResponse(byte[] bytes, Class<?> type) throws SerializerException { |
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135 | ISerializer instance = getInstance(); |
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136 | |
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137 | Boolean enableCompression = getEnableCompression(); |
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138 | if (enableCompression) { |
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139 | try { |
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140 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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141 | return instance.deserializeResponse(unZippedBytes, type); |
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142 | } catch (IOException e) { |
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143 | throw new SerializerException(e.getMessage(), e); |
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144 | } |
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145 | } else { |
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146 | return instance.deserializeResponse(bytes, type); |
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147 | } |
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148 | } |
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149 | |
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150 | public Event deserializeEvent(byte[] bytes) throws SerializerException { |
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151 | ISerializer instance = getInstance(); |
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152 | |
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153 | Boolean enableCompression = getEnableCompression(); |
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154 | if (enableCompression) { |
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155 | try { |
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156 | byte[] unZippedBytes = Zipper.unzip(bytes); |
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157 | return instance.deserializeEvent(unZippedBytes); |
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158 | } catch (IOException e) { |
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159 | throw new SerializerException(e.getMessage(), e); |
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160 | } |
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161 | } else { |
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162 | return instance.deserializeEvent(bytes); |
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163 | } |
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164 | } |
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165 | |
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166 | // public static void removeSerializers() { |
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167 | // logger.warn("Removing serializers"); |
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168 | // serializer = null; |
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169 | // kryoSerializer = null; |
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170 | // javaSerializer = null; |
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171 | // gsonSerializer = null; |
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172 | // } |
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173 | } |
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