Examples of com.datastax.driver.core.policies.TokenAwarePolicy

Package com.datastax.driver.core.policies

Examples of com.datastax.driver.core.policies.TokenAwarePolicy

com.datastax.driver.core.policies.TokenAwarePolicy
A wrapper load balancing policy that add token awareness to a child policy.
This policy encapsulates another policy. The resulting policy works in the following way:
- the {@code distance} method is inherited from the child policy.
- the iterator return by the {@code newQueryPlan} method will firstreturn the {@code LOCAL} replicas for the query (based on {@link Statement#getRoutingKey}) if possible (i.e. if the query {@code getRoutingKey} methoddoesn't return {@code null} and if {@link Metadata#getReplicas}returns a non empty set of replicas for that partition key). If no local replica can be either found or successfully contacted, the rest of the query plan will fallback to one of the child policy.
Do note that only replica for which the child policy {@code distance}method returns {@code HostDistance.LOCAL} will be considered havingpriority. For example, if you wrap {@link DCAwareRoundRobinPolicy} with thistoken aware policy, replicas from remote data centers may only be returned after all the host of the local data center.

     * that we do not destroy the keys.
     */
    @Test(groups = "long")
    public void tokenAwareCompositeKeyTest() throws Throwable {


        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(2, builder);


        Session session = c.session;


        try {

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            c.discard();
        }
    }


    public void tokenAwareTest(boolean usePrepared) throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session);
            init(c, 12);

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        }
    }


    @Test(groups = "long")
    public void tokenAwareWithRF2Test() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(2, builder);
        try {


            createSchema(c.session, 2);
            init(c, 12);

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    private static final Logger logger = LoggerFactory.getLogger(CCMBridge.class);


    @Test(groups = "long")
    public void testRFOneTokenAware() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session, 1);
            init(c, 12, ConsistencyLevel.ONE);

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        }
    }


    @Test(groups = "long")
    public void testRFTwoTokenAware() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session, 2);
            init(c, 12, ConsistencyLevel.TWO);

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        }
    }


    @Test(groups = "long")
    public void testRFThreeTokenAware() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy()));
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session, 3);
            init(c, 12, ConsistencyLevel.TWO);

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    }




    @Test(groups = "long")
    public void testRFOneDowngradingCL() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy())).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE);
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session, 1);
            init(c, 12, ConsistencyLevel.ONE);

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        }
    }


    @Test(groups = "long")
    public void testRFTwoDowngradingCL() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy())).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE);
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, builder);
        try {


            createSchema(c.session, 2);
            init(c, 12, ConsistencyLevel.TWO);

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        testRFThreeDowngradingCL(builder);
    }


    @Test(groups = "long")
    public void testRFThreeTokenAwareDowngradingCL() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy())).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE);
        testRFThreeDowngradingCL(builder);
    }

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        }
    }


    @Test(groups = "long")
    public void testRFThreeDowngradingCLTwoDCs() throws Throwable {
        Cluster.Builder builder = Cluster.builder().withLoadBalancingPolicy(new TokenAwarePolicy(new RoundRobinPolicy())).withRetryPolicy(DowngradingConsistencyRetryPolicy.INSTANCE);
        CCMBridge.CCMCluster c = CCMBridge.buildCluster(3, 3, builder);
        try {


            createMultiDCSchema(c.session, 3, 3);
            init(c, 12, ConsistencyLevel.TWO);

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