*/
package org.opendaylight.controller.config.yang.md.sal.dom.impl;
-import java.util.concurrent.Executors;
-
+import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitDeadlockException;
import org.opendaylight.controller.md.sal.dom.broker.impl.DOMDataBrokerImpl;
-import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore;
+import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStoreFactory;
import org.opendaylight.controller.sal.core.spi.data.DOMStore;
import org.opendaylight.yangtools.util.concurrent.DeadlockDetectingListeningExecutorService;
+import org.opendaylight.yangtools.util.concurrent.SpecialExecutors;
+import org.opendaylight.yangtools.util.PropertyUtils;
import com.google.common.collect.ImmutableMap;
-import com.google.common.util.concurrent.ListeningExecutorService;
-import com.google.common.util.concurrent.MoreExecutors;
/**
*
public final class DomInmemoryDataBrokerModule extends
org.opendaylight.controller.config.yang.md.sal.dom.impl.AbstractDomInmemoryDataBrokerModule {
+ private static final String FUTURE_CALLBACK_EXECUTOR_MAX_QUEUE_SIZE_PROP =
+ "mdsal.datastore-future-callback-queue.size";
+ private static final int DEFAULT_FUTURE_CALLBACK_EXECUTOR_MAX_QUEUE_SIZE = 1000;
+
+ private static final String FUTURE_CALLBACK_EXECUTOR_MAX_POOL_SIZE_PROP =
+ "mdsal.datastore-future-callback-pool.size";
+ private static final int DEFAULT_FUTURE_CALLBACK_EXECUTOR_MAX_POOL_SIZE = 20;
+ private static final String COMMIT_EXECUTOR_MAX_QUEUE_SIZE_PROP =
+ "mdsal.datastore-commit-queue.size";
+ private static final int DEFAULT_COMMIT_EXECUTOR_MAX_QUEUE_SIZE = 5000;
+
public DomInmemoryDataBrokerModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier,
final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
super(identifier, dependencyResolver);
@Override
public java.lang.AutoCloseable createInstance() {
- ListeningExecutorService storeExecutor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(2));
//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 = new InMemoryDOMDataStore("DOM-OPER", storeExecutor);
- //here we will register the SchemaContext listener
- getSchemaServiceDependency().registerSchemaContextListener((InMemoryDOMDataStore)operStore);
+ operStore = InMemoryDOMDataStoreFactory.create("DOM-OPER", getSchemaServiceDependency());
}
DOMStore configStore = getConfigDataStoreDependency();
if(configStore == null){
//we will default to InMemoryDOMDataStore creation
- configStore = new InMemoryDOMDataStore("DOM-CFG", storeExecutor);
- //here we will register the SchemaContext listener
- getSchemaServiceDependency().registerSchemaContextListener((InMemoryDOMDataStore)configStore);
+ configStore = InMemoryDOMDataStoreFactory.create("DOM-CFG", getSchemaServiceDependency());
}
ImmutableMap<LogicalDatastoreType, DOMStore> datastores = ImmutableMap
.<LogicalDatastoreType, DOMStore> builder().put(LogicalDatastoreType.OPERATIONAL, operStore)
.put(LogicalDatastoreType.CONFIGURATION, configStore).build();
+ /*
+ * 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(
+ PropertyUtils.getIntSystemProperty(
+ COMMIT_EXECUTOR_MAX_QUEUE_SIZE_PROP,
+ DEFAULT_COMMIT_EXECUTOR_MAX_QUEUE_SIZE), "WriteTxCommit");
+
+ /*
+ * 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.
+ */
+ Executor listenableFutureExecutor = SpecialExecutors.newBlockingBoundedCachedThreadPool(
+ PropertyUtils.getIntSystemProperty(
+ FUTURE_CALLBACK_EXECUTOR_MAX_POOL_SIZE_PROP,
+ DEFAULT_FUTURE_CALLBACK_EXECUTOR_MAX_POOL_SIZE),
+ PropertyUtils.getIntSystemProperty(
+ FUTURE_CALLBACK_EXECUTOR_MAX_QUEUE_SIZE_PROP,
+ DEFAULT_FUTURE_CALLBACK_EXECUTOR_MAX_QUEUE_SIZE), "CommitFutures");
+
DOMDataBrokerImpl newDataBroker = new DOMDataBrokerImpl(datastores,
- new DeadlockDetectingListeningExecutorService(Executors.newSingleThreadExecutor(),
- TransactionCommitDeadlockException.DEADLOCK_EXECUTOR_FUNCTION));
+ new DeadlockDetectingListeningExecutorService(commitExecutor,
+ TransactionCommitDeadlockException.DEADLOCK_EXECUTOR_FUNCTION,
+ listenableFutureExecutor));
return newDataBroker;
}
Code Review / controller.git / blobdiff