--- /dev/null
+/*
+ * Copyright (c) 2016 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.cluster.datastore;
+
+import akka.actor.ActorRef;
+import akka.actor.PoisonPill;
+import akka.actor.Status;
+import com.google.common.base.Preconditions;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.concurrent.NotThreadSafe;
+import org.opendaylight.controller.cluster.datastore.DataTreeCohortActor.CanCommit;
+import org.opendaylight.controller.md.sal.dom.spi.AbstractRegistrationTree;
+import org.opendaylight.controller.md.sal.dom.spi.RegistrationTreeNode;
+import org.opendaylight.controller.md.sal.dom.spi.RegistrationTreeSnapshot;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCandidate;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.ModificationType;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Registry of user commit cohorts, which is responsible for handling registration and calculation
+ * of affected cohorts based on {@link DataTreeCandidate}.
+ *
+ */
+@NotThreadSafe
+class DataTreeCohortActorRegistry extends AbstractRegistrationTree<ActorRef> {
+
+ private static final Logger LOG = LoggerFactory.getLogger(DataTreeCohortActorRegistry.class);
+
+ private final Map<ActorRef, RegistrationTreeNode<ActorRef>> cohortToNode = new HashMap<>();
+
+
+ void registerCohort(ActorRef sender, RegisterCohort cohort) {
+ takeLock();
+ try {
+ final ActorRef cohortRef = cohort.getCohort();
+ final RegistrationTreeNode<ActorRef> node =
+ findNodeFor(cohort.getPath().getRootIdentifier().getPathArguments());
+ addRegistration(node, cohort.getCohort());
+ cohortToNode.put(cohortRef, node);
+ } catch (final Exception e) {
+ sender.tell(new Status.Failure(e), ActorRef.noSender());
+ return;
+ } finally {
+ releaseLock();
+ }
+ sender.tell(new Status.Success(null), ActorRef.noSender());
+ }
+
+ void removeCommitCohort(ActorRef sender, RemoveCohort message) {
+ final ActorRef cohort = message.getCohort();
+ final RegistrationTreeNode<ActorRef> node = cohortToNode.get(cohort);
+ if (node != null) {
+ removeRegistration(node, cohort);
+ cohortToNode.remove(cohort);
+ }
+ sender.tell(new Status.Success(null), ActorRef.noSender());
+ cohort.tell(PoisonPill.getInstance(), cohort);
+ }
+
+ Collection<DataTreeCohortActor.CanCommit> createCanCommitMessages(String txId, DataTreeCandidate candidate,
+ SchemaContext schema) {
+ try (RegistrationTreeSnapshot<ActorRef> cohorts = takeSnapshot()) {
+ return new CanCommitMessageBuilder(txId, candidate, schema).perform(cohorts.getRootNode());
+ }
+ }
+
+ void process(ActorRef sender, CohortRegistryCommand message) {
+ if (message instanceof RegisterCohort) {
+ registerCohort(sender, (RegisterCohort) message);
+ } else if (message instanceof RemoveCohort) {
+ removeCommitCohort(sender, (RemoveCohort) message);
+ }
+ }
+
+ static abstract class CohortRegistryCommand {
+
+ private final ActorRef cohort;
+
+ CohortRegistryCommand(ActorRef cohort) {
+ this.cohort = Preconditions.checkNotNull(cohort);
+ }
+
+ ActorRef getCohort() {
+ return cohort;
+ }
+ }
+
+ static class RegisterCohort extends CohortRegistryCommand {
+
+ private final DOMDataTreeIdentifier path;
+
+ RegisterCohort(DOMDataTreeIdentifier path, ActorRef cohort) {
+ super(cohort);
+ this.path = path;
+
+ }
+
+ public DOMDataTreeIdentifier getPath() {
+ return path;
+ }
+
+ }
+
+ static class RemoveCohort extends CohortRegistryCommand {
+
+ RemoveCohort(ActorRef cohort) {
+ super(cohort);
+ }
+
+ }
+
+ private static class CanCommitMessageBuilder {
+
+ private final String txId;
+ private final DataTreeCandidate candidate;
+ private final SchemaContext schema;
+ private final Collection<DataTreeCohortActor.CanCommit> messages =
+ new ArrayList<>();
+
+ CanCommitMessageBuilder(String txId, DataTreeCandidate candidate, SchemaContext schema) {
+ this.txId = Preconditions.checkNotNull(txId);
+ this.candidate = Preconditions.checkNotNull(candidate);
+ this.schema = schema;
+ }
+
+ private void lookupAndCreateCanCommits(List<PathArgument> args, int offset,
+ RegistrationTreeNode<ActorRef> node) {
+
+ if (args.size() != offset) {
+ final PathArgument arg = args.get(offset);
+ final RegistrationTreeNode<ActorRef> exactChild = node.getExactChild(arg);
+ if (exactChild != null) {
+ lookupAndCreateCanCommits(args, offset + 1, exactChild);
+ }
+ for (final RegistrationTreeNode<ActorRef> c : node.getInexactChildren(arg)) {
+ lookupAndCreateCanCommits(args, offset + 1, c);
+ }
+ } else {
+ lookupAndCreateCanCommits(candidate.getRootPath(), node, candidate.getRootNode());
+ }
+ }
+
+ private void lookupAndCreateCanCommits(YangInstanceIdentifier path, RegistrationTreeNode<ActorRef> regNode,
+ DataTreeCandidateNode candNode) {
+ if (candNode.getModificationType() == ModificationType.UNMODIFIED) {
+ LOG.debug("Skipping unmodified candidate {}", path);
+ return;
+ }
+ final Collection<ActorRef> regs = regNode.getRegistrations();
+ if (!regs.isEmpty()) {
+ createCanCommits(regs, path, candNode);
+ }
+
+ for (final DataTreeCandidateNode candChild : candNode.getChildNodes()) {
+ if (candChild.getModificationType() != ModificationType.UNMODIFIED) {
+ final RegistrationTreeNode<ActorRef> regChild =
+ regNode.getExactChild(candChild.getIdentifier());
+ if (regChild != null) {
+ lookupAndCreateCanCommits(path.node(candChild.getIdentifier()), regChild, candChild);
+ }
+
+ for (final RegistrationTreeNode<ActorRef> rc : regNode
+ .getInexactChildren(candChild.getIdentifier())) {
+ lookupAndCreateCanCommits(path.node(candChild.getIdentifier()), rc, candChild);
+ }
+ }
+ }
+ }
+
+ private void createCanCommits(Collection<ActorRef> regs, YangInstanceIdentifier path,
+ DataTreeCandidateNode node) {
+ final DOMDataTreeCandidate candidate = DOMDataTreeCandidateTO.create(treeIdentifier(path), node);
+ for (final ActorRef reg : regs) {
+ final CanCommit message = new DataTreeCohortActor.CanCommit(txId, candidate, schema, reg);
+ messages.add(message);
+ }
+ }
+
+ private static DOMDataTreeIdentifier treeIdentifier(YangInstanceIdentifier path) {
+ return new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, path);
+ }
+
+ private Collection<DataTreeCohortActor.CanCommit> perform(RegistrationTreeNode<ActorRef> rootNode) {
+ final List<PathArgument> toLookup = candidate.getRootPath().getPathArguments();
+ lookupAndCreateCanCommits(toLookup, 0, rootNode);
+ return messages;
+ }
+ }
+
+}
Code Review / controller.git / blobdiff