Examples with GraphBinaryModule com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule used on opensource projects

Example 16 with GraphBinaryModule

use of com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule in project java-driver by datastax.

the class ContinuousGraphRequestHandlerSpeculativeExecutionTest method should_fail_if_no_more_nodes_and_initial_execution_is_last.

@Test
@UseDataProvider(location = DseTestDataProviders.class, value = "idempotentGraphConfig")
public void should_fail_if_no_more_nodes_and_initial_execution_is_last(boolean defaultIdempotence, GraphStatement<?> statement) throws Exception {
    GraphRequestHandlerTestHarness.Builder harnessBuilder = GraphRequestHandlerTestHarness.builder().withDefaultIdempotence(defaultIdempotence);
    PoolBehavior node1Behavior = harnessBuilder.customBehavior(node1);
    harnessBuilder.withResponse(node2, defaultDseFrameOf(new Error(ProtocolConstants.ErrorCode.IS_BOOTSTRAPPING, "mock message")));
    try (GraphRequestHandlerTestHarness harness = harnessBuilder.build()) {
        SpeculativeExecutionPolicy speculativeExecutionPolicy = harness.getContext().getSpeculativeExecutionPolicy(DriverExecutionProfile.DEFAULT_NAME);
        long firstExecutionDelay = 100L;
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(1))).thenReturn(firstExecutionDelay);
        GraphBinaryModule module = createGraphBinaryModule(harness.getContext());
        CompletionStage<AsyncGraphResultSet> resultSetFuture = new ContinuousGraphRequestHandler(statement, harness.getSession(), harness.getContext(), "test", module, graphSupportChecker).handle();
        node1Behavior.verifyWrite();
        node1Behavior.setWriteSuccess();
        // do not simulate a response from node1 yet
        // Run the next scheduled task to start the speculative execution. node2 will reply with a
        // BOOTSTRAPPING error, causing a RETRY_NEXT; but the query plan is now empty so the
        // speculative execution stops.
        // next scheduled timeout should be the first speculative execution. Get it and run it.
        CapturedTimeout speculativeExecution1 = harness.nextScheduledTimeout();
        assertThat(speculativeExecution1.getDelay(TimeUnit.MILLISECONDS)).isEqualTo(firstExecutionDelay);
        speculativeExecution1.task().run(speculativeExecution1);
        // node1 now replies with the same response, that triggers a RETRY_NEXT
        node1Behavior.setResponseSuccess(defaultDseFrameOf(new Error(ProtocolConstants.ErrorCode.IS_BOOTSTRAPPING, "mock message")));
        // But again the query plan is empty so that should fail the request
        assertThatStage(resultSetFuture).isFailed(error -> {
            assertThat(error).isInstanceOf(AllNodesFailedException.class);
            Map<Node, List<Throwable>> nodeErrors = ((AllNodesFailedException) error).getAllErrors();
            assertThat(nodeErrors).containsOnlyKeys(node1, node2);
            assertThat(nodeErrors.get(node1).get(0)).isInstanceOf(BootstrappingException.class);
            assertThat(nodeErrors.get(node2).get(0)).isInstanceOf(BootstrappingException.class);
        });
    }
}

Example 17 with GraphBinaryModule

use of com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule in project java-driver by datastax.

the class ContinuousGraphRequestHandlerSpeculativeExecutionTest method should_schedule_speculative_executions.

@Test
@UseDataProvider(location = DseTestDataProviders.class, value = "idempotentGraphConfig")
public void should_schedule_speculative_executions(boolean defaultIdempotence, GraphStatement<?> statement) throws Exception {
    GraphRequestHandlerTestHarness.Builder harnessBuilder = GraphRequestHandlerTestHarness.builder().withDefaultIdempotence(defaultIdempotence);
    PoolBehavior node1Behavior = harnessBuilder.customBehavior(node1);
    PoolBehavior node2Behavior = harnessBuilder.customBehavior(node2);
    PoolBehavior node3Behavior = harnessBuilder.customBehavior(node3);
    try (GraphRequestHandlerTestHarness harness = harnessBuilder.build()) {
        SpeculativeExecutionPolicy speculativeExecutionPolicy = harness.getContext().getSpeculativeExecutionPolicy(DriverExecutionProfile.DEFAULT_NAME);
        long firstExecutionDelay = 100L;
        long secondExecutionDelay = 200L;
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(1))).thenReturn(firstExecutionDelay);
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(2))).thenReturn(secondExecutionDelay);
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(3))).thenReturn(-1L);
        GraphBinaryModule module = createGraphBinaryModule(harness.getContext());
        new ContinuousGraphRequestHandler(statement, harness.getSession(), harness.getContext(), "test", module, graphSupportChecker).handle();
        node1Behavior.verifyWrite();
        node1Behavior.setWriteSuccess();
        CapturedTimeout speculativeExecution1 = harness.nextScheduledTimeout();
        assertThat(speculativeExecution1.getDelay(TimeUnit.MILLISECONDS)).isEqualTo(firstExecutionDelay);
        verifyNoMoreInteractions(nodeMetricUpdater1);
        speculativeExecution1.task().run(speculativeExecution1);
        verify(nodeMetricUpdater1).incrementCounter(DefaultNodeMetric.SPECULATIVE_EXECUTIONS, DriverExecutionProfile.DEFAULT_NAME);
        node2Behavior.verifyWrite();
        node2Behavior.setWriteSuccess();
        CapturedTimeout speculativeExecution2 = harness.nextScheduledTimeout();
        assertThat(speculativeExecution2.getDelay(TimeUnit.MILLISECONDS)).isEqualTo(secondExecutionDelay);
        verifyNoMoreInteractions(nodeMetricUpdater2);
        speculativeExecution2.task().run(speculativeExecution2);
        verify(nodeMetricUpdater2).incrementCounter(DefaultNodeMetric.SPECULATIVE_EXECUTIONS, DriverExecutionProfile.DEFAULT_NAME);
        node3Behavior.verifyWrite();
        node3Behavior.setWriteSuccess();
        // No more scheduled tasks since the policy returns 0 on the third call.
        assertThat(harness.nextScheduledTimeout()).isNull();
    // Note that we don't need to complete any response, the test is just about checking that
    // executions are started.
    }
}

Example 18 with GraphBinaryModule

use of com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule in project java-driver by datastax.

the class ContinuousGraphRequestHandlerSpeculativeExecutionTest method should_not_start_execution_if_result_complete.

@Test
@UseDataProvider(location = DseTestDataProviders.class, value = "idempotentGraphConfig")
public void should_not_start_execution_if_result_complete(boolean defaultIdempotence, GraphStatement<?> statement) throws Exception {
    GraphRequestHandlerTestHarness.Builder harnessBuilder = GraphRequestHandlerTestHarness.builder().withGraphTimeout(Duration.ofSeconds(10)).withDefaultIdempotence(defaultIdempotence);
    PoolBehavior node1Behavior = harnessBuilder.customBehavior(node1);
    PoolBehavior node2Behavior = harnessBuilder.customBehavior(node2);
    try (GraphRequestHandlerTestHarness harness = harnessBuilder.build()) {
        SpeculativeExecutionPolicy speculativeExecutionPolicy = harness.getContext().getSpeculativeExecutionPolicy(DriverExecutionProfile.DEFAULT_NAME);
        long firstExecutionDelay = 100L;
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(1))).thenReturn(firstExecutionDelay);
        GraphBinaryModule module = createGraphBinaryModule(harness.getContext());
        ContinuousGraphRequestHandler requestHandler = new ContinuousGraphRequestHandler(statement, harness.getSession(), harness.getContext(), "test", module, graphSupportChecker);
        CompletionStage<AsyncGraphResultSet> resultSetFuture = requestHandler.handle();
        node1Behavior.verifyWrite();
        node1Behavior.setWriteSuccess();
        // The first timeout scheduled should be the global timeout
        CapturedTimeout globalTimeout = harness.nextScheduledTimeout();
        assertThat(globalTimeout.getDelay(TimeUnit.SECONDS)).isEqualTo(10);
        // Check that the first execution was scheduled but don't run it yet
        CapturedTimeout speculativeExecution1 = harness.nextScheduledTimeout();
        assertThat(speculativeExecution1.getDelay(TimeUnit.MILLISECONDS)).isEqualTo(firstExecutionDelay);
        // Complete the request from the initial execution
        node1Behavior.setResponseSuccess(defaultDseFrameOf(singleGraphRow(GraphProtocol.GRAPH_BINARY_1_0, module)));
        assertThatStage(resultSetFuture).isSuccess();
        // Pending speculative executions should have been cancelled. However we don't check
        // firstExecutionTask directly because the request handler's onResponse can sometimes be
        // invoked before operationComplete (this is very unlikely in practice, but happens in our
        // Travis CI build). When that happens, the speculative execution is not recorded yet when
        // cancelScheduledTasks runs.
        // The fact that we missed the speculative execution is not a problem; even if it starts, it
        // will eventually find out that the result is already complete and cancel itself:
        speculativeExecution1.task().run(speculativeExecution1);
        node2Behavior.verifyNoWrite();
        verify(nodeMetricUpdater1).updateTimer(eq(DseNodeMetric.GRAPH_MESSAGES), eq(DriverExecutionProfile.DEFAULT_NAME), anyLong(), eq(TimeUnit.NANOSECONDS));
        verifyNoMoreInteractions(nodeMetricUpdater1);
    }
}

Example 19 with GraphBinaryModule

use of com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule in project java-driver by datastax.

the class ContinuousGraphRequestHandlerSpeculativeExecutionTest method should_retry_in_speculative_executions.

@Test
@UseDataProvider(location = DseTestDataProviders.class, value = "idempotentGraphConfig")
public void should_retry_in_speculative_executions(boolean defaultIdempotence, GraphStatement<?> statement) throws Exception {
    GraphRequestHandlerTestHarness.Builder harnessBuilder = GraphRequestHandlerTestHarness.builder().withDefaultIdempotence(defaultIdempotence);
    PoolBehavior node1Behavior = harnessBuilder.customBehavior(node1);
    PoolBehavior node2Behavior = harnessBuilder.customBehavior(node2);
    PoolBehavior node3Behavior = harnessBuilder.customBehavior(node3);
    try (GraphRequestHandlerTestHarness harness = harnessBuilder.build()) {
        SpeculativeExecutionPolicy speculativeExecutionPolicy = harness.getContext().getSpeculativeExecutionPolicy(DriverExecutionProfile.DEFAULT_NAME);
        long firstExecutionDelay = 100L;
        when(speculativeExecutionPolicy.nextExecution(any(Node.class), eq(null), eq(statement), eq(1))).thenReturn(firstExecutionDelay);
        GraphBinaryModule module = createGraphBinaryModule(harness.getContext());
        CompletionStage<AsyncGraphResultSet> resultSetFuture = new ContinuousGraphRequestHandler(statement, harness.getSession(), harness.getContext(), "test", module, graphSupportChecker).handle();
        node1Behavior.verifyWrite();
        node1Behavior.setWriteSuccess();
        // do not simulate a response from node1. The request will stay hanging for the rest of this
        // test
        // next scheduled timeout should be the first speculative execution. Get it and run it.
        CapturedTimeout speculativeExecution1 = harness.nextScheduledTimeout();
        assertThat(speculativeExecution1.getDelay(TimeUnit.MILLISECONDS)).isEqualTo(firstExecutionDelay);
        speculativeExecution1.task().run(speculativeExecution1);
        node2Behavior.verifyWrite();
        node2Behavior.setWriteSuccess();
        // node2 replies with a response that triggers a RETRY_NEXT
        node2Behavior.setResponseSuccess(defaultDseFrameOf(new Error(ProtocolConstants.ErrorCode.IS_BOOTSTRAPPING, "mock message")));
        node3Behavior.setResponseSuccess(defaultDseFrameOf(singleGraphRow(GraphProtocol.GRAPH_BINARY_1_0, module)));
        // The second execution should move to node3 and complete the request
        assertThatStage(resultSetFuture).isSuccess();
        // The request to node1 was still in flight, it should have been cancelled
        node1Behavior.verifyCancellation();
    }
}

Example 20 with GraphBinaryModule

use of com.datastax.dse.driver.internal.core.graph.binary.GraphBinaryModule in project java-driver by datastax.

the class ContinuousGraphRequestHandlerTest method should_honor_statement_timeout.

@Test
public void should_honor_statement_timeout() throws Exception {
    // given
    GraphBinaryModule binaryModule = createGraphBinaryModule(mockContext);
    Duration defaultTimeout = Duration.ofSeconds(1);
    Duration statementTimeout = Duration.ofSeconds(2);
    RequestHandlerTestHarness.Builder builder = GraphRequestHandlerTestHarness.builder().withGraphTimeout(defaultTimeout);
    PoolBehavior node1Behavior = builder.customBehavior(node);
    try (RequestHandlerTestHarness harness = builder.build()) {
        DriverExecutionProfile profile = harness.getContext().getConfig().getDefaultProfile();
        when(profile.isDefined(DseDriverOption.GRAPH_SUB_PROTOCOL)).thenReturn(true);
        when(profile.getString(DseDriverOption.GRAPH_SUB_PROTOCOL)).thenReturn(GraphProtocol.GRAPH_BINARY_1_0.toInternalCode());
        GraphStatement<?> graphStatement = ScriptGraphStatement.newInstance("mockQuery").setTimeout(statementTimeout);
        // when
        ContinuousGraphRequestHandler handler = new ContinuousGraphRequestHandler(graphStatement, harness.getSession(), harness.getContext(), "test", binaryModule, new GraphSupportChecker());
        // send the initial request
        CompletionStage<AsyncGraphResultSet> page1Future = handler.handle();
        // acknowledge the write, will set the global timeout
        node1Behavior.verifyWrite();
        node1Behavior.setWriteSuccess();
        CapturedTimeout globalTimeout = harness.nextScheduledTimeout();
        assertThat(globalTimeout.getDelay(TimeUnit.NANOSECONDS)).isEqualTo(statementTimeout.toNanos());
        // will trigger the global timeout and complete it exceptionally
        globalTimeout.task().run(globalTimeout);
        assertThat(page1Future.toCompletableFuture()).isCompletedExceptionally();
        assertThatThrownBy(() -> page1Future.toCompletableFuture().get()).hasRootCauseExactlyInstanceOf(DriverTimeoutException.class).hasMessageContaining("Query timed out after " + statementTimeout);
    }
}