Package io.envoyproxy.envoy.extensions.matching.input_matchers.consistent_hashing.v3

Class ConsistentHashing

  • All Implemented Interfaces:
    com.google.protobuf.Message, com.google.protobuf.MessageLite, com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder, ConsistentHashingOrBuilder, Serializable
    public final class ConsistentHashing
extends com.google.protobuf.GeneratedMessageV3
implements ConsistentHashingOrBuilder
     The consistent hashing matchers computes a consistent hash from the input and matches if the resulting hash
 is within the configured threshold.
 More specifically, this matcher evaluates to true if hash(input, seed) % modulo >= threshold.
 Note that the consistency of the match result relies on the internal hash function (xxhash) remaining
 unchanged. While this is unlikely to happen intentionally, this could cause inconsistent match results
 between deployments.
    Protobuf type envoy.extensions.matching.input_matchers.consistent_hashing.v3.ConsistentHashing
    See Also:
    Serialized Form

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  ConsistentHashing.Builder
      The consistent hashing matchers computes a consistent hash from the input and matches if the resulting hash is within the configured threshold.

      • Nested classes/interfaces inherited from class com.google.protobuf.GeneratedMessageV3

        com.google.protobuf.GeneratedMessageV3.BuilderParent, com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage,​BuilderType extends com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType,​BuilderType>>, com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.ExtendableMessageOrBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.FieldAccessorTable, com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter

      • Nested classes/interfaces inherited from class com.google.protobuf.AbstractMessageLite

        com.google.protobuf.AbstractMessageLite.InternalOneOfEnum

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int MODULO_FIELD_NUMBER  
      static int SEED_FIELD_NUMBER  
      static int THRESHOLD_FIELD_NUMBER  

      • Fields inherited from class com.google.protobuf.GeneratedMessageV3

        alwaysUseFieldBuilders, unknownFields

      • Fields inherited from class com.google.protobuf.AbstractMessage

        memoizedSize

      • Fields inherited from class com.google.protobuf.AbstractMessageLite

        memoizedHashCode

    • Method Detail

      • newInstance

        protected Object newInstance​(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)
        Overrides:
        newInstance in class com.google.protobuf.GeneratedMessageV3

      • getUnknownFields

        public final com.google.protobuf.UnknownFieldSet getUnknownFields()
        Specified by:
        getUnknownFields in interface com.google.protobuf.MessageOrBuilder
        Overrides:
        getUnknownFields in class com.google.protobuf.GeneratedMessageV3

      • getDescriptor

        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor()

      • internalGetFieldAccessorTable

        protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
        Specified by:
        internalGetFieldAccessorTable in class com.google.protobuf.GeneratedMessageV3

      • getThreshold

        public int getThreshold()
         The threshold the resulting hash must be over in order for this matcher to evaluate to true.
 This value must be below the configured modulo value.
 Setting this to 0 is equivalent to this matcher always matching.
        uint32 threshold = 1;
        Specified by:
        getThreshold in interface ConsistentHashingOrBuilder
        Returns:
        The threshold.

      • getModulo

        public int getModulo()
         The value to use for the modulus in the calculation. This effectively  bounds the hash output,
 specifying the range of possible values.
 This value must be above the configured threshold.
        uint32 modulo = 2 [(.validate.rules) = { ... }
        Specified by:
        getModulo in interface ConsistentHashingOrBuilder
        Returns:
        The modulo.

      • getSeed

        public long getSeed()
         Optional seed passed through the hash function. This allows using additional information when computing
 the hash value: by changing the seed value, a different partition of matching and non-matching inputs will
 be created that remains consistent for that seed value.
        uint64 seed = 3;
        Specified by:
        getSeed in interface ConsistentHashingOrBuilder
        Returns:
        The seed.

      • isInitialized

        public final boolean isInitialized()
        Specified by:
        isInitialized in interface com.google.protobuf.MessageLiteOrBuilder
        Overrides:
        isInitialized in class com.google.protobuf.GeneratedMessageV3

      • writeTo

        public void writeTo​(com.google.protobuf.CodedOutputStream output)
             throws IOException
        Specified by:
        writeTo in interface com.google.protobuf.MessageLite
        Overrides:
        writeTo in class com.google.protobuf.GeneratedMessageV3
        Throws:
        IOException

      • getSerializedSize

        public int getSerializedSize()
        Specified by:
        getSerializedSize in interface com.google.protobuf.MessageLite
        Overrides:
        getSerializedSize in class com.google.protobuf.GeneratedMessageV3

      • equals

        public boolean equals​(Object obj)
        Specified by:
        equals in interface com.google.protobuf.Message
        Overrides:
        equals in class com.google.protobuf.AbstractMessage

      • hashCode

        public int hashCode()
        Specified by:
        hashCode in interface com.google.protobuf.Message
        Overrides:
        hashCode in class com.google.protobuf.AbstractMessage

      • parseFrom

        public static ConsistentHashing parseFrom​(ByteBuffer data)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(ByteBuffer data,
                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(com.google.protobuf.ByteString data)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(com.google.protobuf.ByteString data,
                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(byte[] data)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(byte[] data,
                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
                                   throws com.google.protobuf.InvalidProtocolBufferException
        Throws:
        com.google.protobuf.InvalidProtocolBufferException

      • parseFrom

        public static ConsistentHashing parseFrom​(com.google.protobuf.CodedInputStream input,
                                          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
                                   throws IOException
        Throws:
        IOException

      • newBuilderForType

        public ConsistentHashing.Builder newBuilderForType()
        Specified by:
        newBuilderForType in interface com.google.protobuf.Message
        Specified by:
        newBuilderForType in interface com.google.protobuf.MessageLite

      • toBuilder

        public ConsistentHashing.Builder toBuilder()
        Specified by:
        toBuilder in interface com.google.protobuf.Message
        Specified by:
        toBuilder in interface com.google.protobuf.MessageLite

      • newBuilderForType

        protected ConsistentHashing.Builder newBuilderForType​(com.google.protobuf.GeneratedMessageV3.BuilderParent parent)
        Specified by:
        newBuilderForType in class com.google.protobuf.GeneratedMessageV3

      • getParserForType

        public com.google.protobuf.Parser<ConsistentHashing> getParserForType()
        Specified by:
        getParserForType in interface com.google.protobuf.Message
        Specified by:
        getParserForType in interface com.google.protobuf.MessageLite
        Overrides:
        getParserForType in class com.google.protobuf.GeneratedMessageV3

      • getDefaultInstanceForType

        public ConsistentHashing getDefaultInstanceForType()
        Specified by:
        getDefaultInstanceForType in interface com.google.protobuf.MessageLiteOrBuilder
        Specified by:
        getDefaultInstanceForType in interface com.google.protobuf.MessageOrBuilder