Simplify code using Java 8 features

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / databroker / AbstractDOMBroker.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBroker.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBroker.java
index 833cb4946230f559a11bacea5bea7da99aa11180..9905893f9f550b05279ccb4bb2c4e2412ff9843b 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBroker.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/AbstractDOMBroker.java
@@ -9,62 +9,74 @@
 package org.opendaylight.controller.cluster.databroker;
 
 import static com.google.common.base.Preconditions.checkState;
-import com.google.common.collect.ImmutableMap;
-import java.util.Collections;
+
+import com.google.common.collect.ClassToInstanceMap;
+import com.google.common.collect.ImmutableClassToInstanceMap;
+import com.google.common.collect.ImmutableClassToInstanceMap.Builder;
 import java.util.EnumMap;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicLong;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataBrokerExtension;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataChangeListener;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
-import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
-import org.opendaylight.controller.sal.core.spi.data.DOMStore;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTreeChangePublisher;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.mdsal.common.api.TransactionChainListener;
+import org.opendaylight.mdsal.dom.api.DOMDataBroker;
+import org.opendaylight.mdsal.dom.api.DOMDataBrokerExtension;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohort;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistration;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistry;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
+import org.opendaylight.mdsal.dom.spi.store.DOMStore;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreTreeChangePublisher;
 import org.opendaylight.yangtools.concepts.ListenerRegistration;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DOMStore>
-        implements DOMDataBroker, AutoCloseable {
+public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DOMStore> implements DOMDataBroker {
 
     private static final Logger LOG = LoggerFactory.getLogger(AbstractDOMBroker.class);
 
     private final AtomicLong txNum = new AtomicLong();
     private final AtomicLong chainNum = new AtomicLong();
-    private final Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> extensions;
+    private final ClassToInstanceMap<DOMDataBrokerExtension> extensions;
+
     private volatile AutoCloseable closeable;
 
     protected AbstractDOMBroker(final Map<LogicalDatastoreType, DOMStore> datastores) {
         super(datastores);
 
-        boolean treeChange = true;
-        for (DOMStore ds : datastores.values()) {
-            if (!(ds instanceof DOMStoreTreeChangePublisher)) {
-                treeChange = false;
-                break;
-            }
+        Builder<DOMDataBrokerExtension> extBuilder = ImmutableClassToInstanceMap.builder();
+        if (isSupported(datastores, DOMStoreTreeChangePublisher.class)) {
+            extBuilder.put(DOMDataTreeChangeService.class, new DOMDataTreeChangeService() {
+                @Override
+                public <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerDataTreeChangeListener(
+                        final DOMDataTreeIdentifier treeId, final L listener) {
+                    DOMStore store = getDOMStore(treeId.getDatastoreType());
+                    return ((DOMStoreTreeChangePublisher) store).registerTreeChangeListener(
+                            treeId.getRootIdentifier(), listener);
+                }
+            });
         }
 
-        if (treeChange) {
-            extensions = ImmutableMap.<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension>of(DOMDataTreeChangeService.class, new DOMDataTreeChangeService() {
+        if (isSupported(datastores, DOMDataTreeCommitCohortRegistry.class)) {
+            extBuilder.put(DOMDataTreeCommitCohortRegistry.class, new DOMDataTreeCommitCohortRegistry() {
                 @Override
-                public <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerDataTreeChangeListener(final DOMDataTreeIdentifier treeId, final L listener) {
-                    DOMStore publisher = getTxFactories().get(treeId.getDatastoreType());
-                    checkState(publisher != null, "Requested logical data store is not available.");
-
-                    return ((DOMStoreTreeChangePublisher) publisher).registerTreeChangeListener(treeId.getRootIdentifier(), listener);
+                public <T extends DOMDataTreeCommitCohort> DOMDataTreeCommitCohortRegistration<T> registerCommitCohort(
+                        final DOMDataTreeIdentifier path, final T cohort) {
+                    DOMStore store = getDOMStore(path.getDatastoreType());
+                    return ((DOMDataTreeCommitCohortRegistry) store).registerCommitCohort(path, cohort);
                 }
             });
-        } else {
-            extensions = Collections.emptyMap();
         }
+
+        extensions = extBuilder.build();
+    }
+
+    private static boolean isSupported(final Map<LogicalDatastoreType, DOMStore> datastores,
+            final Class<?> expDOMStoreInterface) {
+        return datastores.values().stream().allMatch(expDOMStoreInterface::isInstance);
     }
 
     public void setCloseable(final AutoCloseable closeable) {
@@ -72,6 +84,7 @@ public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DO
     }
 
     @Override
+    @SuppressWarnings("checkstyle:IllegalCatch")
     public void close() {
         super.close();
 
@@ -90,16 +103,7 @@ public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DO
     }
 
     @Override
-    public ListenerRegistration<DOMDataChangeListener> registerDataChangeListener(final LogicalDatastoreType store,
-                                                                                  final YangInstanceIdentifier path, final DOMDataChangeListener listener, final DataChangeScope triggeringScope) {
-
-        DOMStore potentialStore = getTxFactories().get(store);
-        checkState(potentialStore != null, "Requested logical data store is not available.");
-        return potentialStore.registerChangeListener(path, listener, triggeringScope);
-    }
-
-    @Override
-    public Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> getSupportedExtensions() {
+    public ClassToInstanceMap<DOMDataBrokerExtension> getExtensions() {
         return extensions;
     }
 
@@ -107,7 +111,8 @@ public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DO
     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
         checkNotClosed();
 
-        final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains = new EnumMap<>(LogicalDatastoreType.class);
+        final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains =
+                new EnumMap<>(LogicalDatastoreType.class);
         for (Map.Entry<LogicalDatastoreType, DOMStore> entry : getTxFactories().entrySet()) {
             backingChains.put(entry.getKey(), entry.getValue().createTransactionChain());
         }
@@ -117,4 +122,10 @@ public abstract class AbstractDOMBroker extends AbstractDOMTransactionFactory<DO
                 backingChains);
         return new DOMBrokerTransactionChain(chainId, backingChains, this, listener);
     }
+
+    private DOMStore getDOMStore(final LogicalDatastoreType type) {
+        DOMStore store = getTxFactories().get(type);
+        checkState(store != null, "Requested logical data store is not available.");
+        return store;
+    }
 }