[44] | 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.message.Request; |
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| 7 | import omq.common.message.Response; |
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| 8 | import omq.common.util.Serializers.GsonImp; |
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| 9 | import omq.common.util.Serializers.ISerializer; |
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| 10 | import omq.common.util.Serializers.JavaImp; |
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| 11 | import omq.common.util.Serializers.KryoImp; |
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| 12 | import omq.exception.SerializerException; |
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| 13 | import omq.server.RemoteObject; |
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| 14 | |
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| 15 | /** |
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| 16 | * |
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[83] | 17 | * Serializer enables to serialize the requests and the responses of the |
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| 18 | * remoteObjects. This class is used to have the same serializer object a not to |
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| 19 | * create new instances every time they are needed. |
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| 20 | * |
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[44] | 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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[62] | 25 | public static final String KRYO = "kryo"; |
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| 26 | public static final String JAVA = "java"; |
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| 27 | public static final String GSON = "gson"; |
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[44] | 28 | |
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[47] | 29 | // Client serializer |
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[53] | 30 | public ISerializer serializer; |
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[44] | 31 | |
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[47] | 32 | // Server serializers |
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[53] | 33 | private ISerializer kryoSerializer; |
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| 34 | private ISerializer javaSerializer; |
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| 35 | private ISerializer gsonSerializer; |
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[47] | 36 | |
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[53] | 37 | private Properties env; |
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| 38 | |
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| 39 | public Serializer(Properties env) { |
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| 40 | this.env = env; |
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| 41 | } |
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| 42 | |
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| 43 | private Boolean getEnableCompression() { |
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[77] | 44 | return Boolean.valueOf(env.getProperty(ParameterQueue.ENABLE_COMPRESSION, "false")); |
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[44] | 45 | } |
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| 46 | |
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[53] | 47 | public ISerializer getInstance() throws SerializerException { |
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[44] | 48 | if (serializer == null) { |
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| 49 | try { |
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[77] | 50 | String className = env.getProperty(ParameterQueue.PROXY_SERIALIZER, Serializer.JAVA); |
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[72] | 51 | |
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[44] | 52 | if (className == null || className.isEmpty()) { |
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| 53 | throw new ClassNotFoundException("Class name is null or empty."); |
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| 54 | } |
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[72] | 55 | |
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[47] | 56 | serializer = getInstance(className); |
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[44] | 57 | } catch (Exception ex) { |
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| 58 | throw new SerializerException(ex.getMessage(), ex); |
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| 59 | } |
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| 60 | } |
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| 61 | |
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| 62 | return serializer; |
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| 63 | } |
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| 64 | |
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[72] | 65 | public ISerializer getInstance(String type) throws SerializerException { |
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[62] | 66 | if (KRYO.equals(type)) { |
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[47] | 67 | if (kryoSerializer == null) { |
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| 68 | kryoSerializer = new KryoImp(); |
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| 69 | } |
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| 70 | return kryoSerializer; |
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[62] | 71 | } else if (GSON.equals(type)) { |
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[47] | 72 | if (gsonSerializer == null) { |
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| 73 | gsonSerializer = new GsonImp(); |
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| 74 | } |
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| 75 | return gsonSerializer; |
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[62] | 76 | } else if (JAVA.equals(type)) { |
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[47] | 77 | if (javaSerializer == null) { |
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| 78 | javaSerializer = new JavaImp(); |
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| 79 | } |
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| 80 | return javaSerializer; |
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| 81 | } |
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[72] | 82 | |
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[62] | 83 | throw new SerializerException("Serializer not found."); |
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[47] | 84 | } |
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| 85 | |
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[53] | 86 | public byte[] serialize(String type, Object obj) throws SerializerException { |
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[47] | 87 | ISerializer instance = getInstance(type); |
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| 88 | |
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| 89 | Boolean enableCompression = getEnableCompression(); |
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| 90 | if (enableCompression) { |
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| 91 | byte[] objSerialized = instance.serialize(obj); |
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| 92 | try { |
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| 93 | return Zipper.zip(objSerialized); |
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| 94 | } catch (IOException e) { |
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| 95 | throw new SerializerException(e.getMessage(), e); |
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| 96 | } |
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| 97 | } else { |
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| 98 | return instance.serialize(obj); |
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| 99 | } |
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| 100 | } |
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| 101 | |
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[53] | 102 | public byte[] serialize(Object obj) throws SerializerException { |
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[44] | 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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[53] | 118 | public Request deserializeRequest(String type, byte[] bytes, RemoteObject obj) throws SerializerException { |
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[47] | 119 | ISerializer instance = getInstance(type); |
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[44] | 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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[53] | 134 | public Response deserializeResponse(byte[] bytes, Class<?> type) throws SerializerException { |
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[44] | 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 | } |
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