Examples with AbstractMXBean org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean used on opensource projects

Example 1 with AbstractMXBean

use of org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean in project controller by opendaylight.

the class DomInmemoryDataBrokerModule method createInstance.

@Override
public java.lang.AutoCloseable createInstance() {
    // Initializing Operational DOM DataStore defaulting to InMemoryDOMDataStore if one is not configured
    DOMStore operStore = getOperationalDataStoreDependency();
    if (operStore == null) {
        // we will default to InMemoryDOMDataStore creation
        operStore = InMemoryDOMDataStoreFactory.create("DOM-OPER", getSchemaServiceDependency());
    }
    DOMStore configStore = getConfigDataStoreDependency();
    if (configStore == null) {
        // we will default to InMemoryDOMDataStore creation
        configStore = InMemoryDOMDataStoreFactory.create("DOM-CFG", getSchemaServiceDependency());
    }
    final Map<LogicalDatastoreType, DOMStore> datastores = new EnumMap<>(LogicalDatastoreType.class);
    datastores.put(LogicalDatastoreType.OPERATIONAL, operStore);
    datastores.put(LogicalDatastoreType.CONFIGURATION, configStore);
    /*
         * We use an executor for commit ListenableFuture callbacks that favors reusing available
         * threads over creating new threads at the expense of execution time. The assumption is
         * that most ListenableFuture callbacks won't execute a lot of business logic where we want
         * it to run quicker - many callbacks will likely just handle error conditions and do
         * nothing on success. The executor queue capacity is bounded and, if the capacity is
         * reached, subsequent submitted tasks will block the caller.
         */
    ExecutorService listenableFutureExecutor = SpecialExecutors.newBlockingBoundedCachedThreadPool(getMaxDataBrokerFutureCallbackPoolSize(), getMaxDataBrokerFutureCallbackQueueSize(), "CommitFutures", SerializedDOMDataBroker.class);
    final List<AbstractMXBean> mBeans = Lists.newArrayList();
    final DurationStatisticsTracker commitStatsTracker;
    /*
         * We use a single-threaded executor for commits with a bounded queue capacity. If the
         * queue capacity is reached, subsequent commit tasks will be rejected and the commits will
         * fail. This is done to relieve back pressure. This should be an extreme scenario - either
         * there's deadlock(s) somewhere and the controller is unstable or some rogue component is
         * continuously hammering commits too fast or the controller is just over-capacity for the
         * system it's running on.
         */
    ExecutorService commitExecutor = SpecialExecutors.newBoundedSingleThreadExecutor(getMaxDataBrokerCommitQueueSize(), "WriteTxCommit", SerializedDOMDataBroker.class);
    SerializedDOMDataBroker sdb = new SerializedDOMDataBroker(datastores, new DeadlockDetectingListeningExecutorService(commitExecutor, TransactionCommitDeadlockException.DEADLOCK_EXCEPTION_SUPPLIER, listenableFutureExecutor));
    commitStatsTracker = sdb.getCommitStatsTracker();
    final AbstractMXBean commitExecutorStatsMXBean = ThreadExecutorStatsMXBeanImpl.create(commitExecutor, "CommitExecutorStats", JMX_BEAN_TYPE, null);
    if (commitExecutorStatsMXBean != null) {
        mBeans.add(commitExecutorStatsMXBean);
    }
    if (commitStatsTracker != null) {
        final CommitStatsMXBeanImpl commitStatsMXBean = new CommitStatsMXBeanImpl(commitStatsTracker, JMX_BEAN_TYPE);
        commitStatsMXBean.registerMBean();
        mBeans.add(commitStatsMXBean);
    }
    final AbstractMXBean commitFutureStatsMXBean = ThreadExecutorStatsMXBeanImpl.create(listenableFutureExecutor, "CommitFutureExecutorStats", JMX_BEAN_TYPE, null);
    if (commitFutureStatsMXBean != null) {
        mBeans.add(commitFutureStatsMXBean);
    }
    sdb.setCloseable(() -> mBeans.forEach(AbstractMXBean::unregisterMBean));
    return sdb;
}