Bug 7804: Implement agent RPCs for DOMDataTreeListener testing

[controller.git] / opendaylight / md-sal / samples / clustering-test-app / provider / src / main / java / org / opendaylight / controller / clustering / it / provider / impl / IdIntsDOMDataTreeLIstener.java

diff --git a/opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/impl/IdIntsDOMDataTreeLIstener.java b/opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/impl/IdIntsDOMDataTreeLIstener.java
new file mode 100644 (file)
index 0000000..be46a0e
--- /dev/null
+++ b/opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/impl/IdIntsDOMDataTreeLIstener.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.clustering.it.provider.impl;
+
+import com.google.common.base.Preconditions;
+import java.util.Collection;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeListener;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeListeningException;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class IdIntsDOMDataTreeLIstener implements DOMDataTreeListener {
+
+    private static final Logger LOG = LoggerFactory.getLogger(IdIntsDOMDataTreeLIstener.class);
+
+    private NormalizedNode<?, ?> localCopy = null;
+
+    @Override
+    public void onDataTreeChanged(@Nonnull final Collection<DataTreeCandidate> changes,
+                                  @Nonnull final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> subtrees) {
+
+        // There should only be one candidate reported
+        Preconditions.checkState(changes.size() == 1);
+
+        // do not log the change into debug, only use trace since it will lead to OOM on default heap settings
+        LOG.debug("Received data tree changed");
+
+        changes.forEach(change -> {
+            if (change.getRootNode().getDataAfter().isPresent()) {
+                LOG.trace("Received change, data before: {}, data after: ", change.getRootNode().getDataBefore().get(),
+                        change.getRootNode().getDataAfter().get());
+
+                if (localCopy == null || checkEqual(change.getRootNode().getDataBefore().get())) {
+                    localCopy = change.getRootNode().getDataAfter().get();
+                } else {
+                    LOG.debug("Ignoring notification: {}", change);
+                }
+            } else {
+                LOG.warn("getDataAfter() is missing from notification. change: {}", change);
+            }
+        });
+    }
+
+    @Override
+    public void onDataTreeFailed(@Nonnull Collection<DOMDataTreeListeningException> causes) {
+
+    }
+
+    public boolean checkEqual(final NormalizedNode<?, ?> expected) {
+        return localCopy.equals(expected);
+    }
+}