Examples of com.fasterxml.clustermate.api.KeyHash

com.fasterxml.clustermate.api.KeyHash
Simple value class that encapsulates a 32-bit int hash value in context of a specific {@link KeySpace}. Used to hide the details of modulo calculations and reduce likelihood of mismatch between full hash value and hash modulo; latter being used for all calculations within a {@link KeySpace}.


    @Override
    public NodesForKey getNodesFor(K key)
    {
        int fullHash = _keyConverter.routingHashFor(key);
        KeyHash hash = new KeyHash(fullHash, _keyspace.getLength());
        int currVersion = _version.get();
        int modulo = hash.getModuloHash();
        NodesForKey nodes = _routing.get(modulo);
        // fast (and common) case: pre-calculated, valid info exists:
        if (nodes != null && nodes.version() == currVersion) {
            return nodes;
        }

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     * Factory method for constructing {@link KeyHash} instances that
     * are used in place of raw hash values (to reduce chance that "raw"
     * and modulo hash values are incorrectly used)
     */
    public KeyHash hash(int fullHash) {
        return new KeyHash(fullHash, _length);
    }

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    @Override
    public NodesForKey getNodesFor(K key)
    {
        int fullHash = _keyConverter.routingHashFor(key);
        KeyHash hash = new KeyHash(fullHash, _keyspace.getLength());
        int currVersion = _version.get();
        int modulo = hash.getModuloHash();
        NodesForKey nodes = _routing.get(modulo);
        // fast (and common) case: pre-calculated, valid info exists:
        if (nodes != null && nodes.version() == currVersion) {
            return nodes;
        }

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Related Classes of com.fasterxml.clustermate.api.KeyHash

com.fasterxml.clustermate.api.KeySpace

com.fasterxml.clustermate.client.cluster.ClusterViewByClientImpl

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