*/
package org.opendaylight.controller.cluster.datastore.entityownership;
-import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.CANDIDATE_NAME_NODE_ID;
import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.CANDIDATE_NODE_ID;
import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_ID_NODE_ID;
import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_ID_QNAME;
private void onSelectOwner(SelectOwner selectOwner) {
String currentOwner = getCurrentOwner(selectOwner.getEntityPath());
if(Strings.isNullOrEmpty(currentOwner)) {
+ String entityType = EntityOwnersModel.entityTypeFromEntityPath(selectOwner.getEntityPath());
writeNewOwner(selectOwner.getEntityPath(), newOwner(selectOwner.getAllCandidates(),
+ entityOwnershipStatistics.byEntityType(entityType),
selectOwner.getOwnerSelectionStrategy()));
Cancellable cancellable = entityToScheduledOwnershipTask.get(selectOwner.getEntityPath());
protected void onStateChanged() {
super.onStateChanged();
- commitCoordinator.onStateChanged(this, isLeader());
+ boolean isLeader = isLeader();
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("{}: onStateChanged: isLeader: {}, hasLeader: {}", persistenceId(), isLeader, hasLeader());
+ }
+
+ commitCoordinator.onStateChanged(this, isLeader);
}
@Override
protected void onLeaderChanged(String oldLeader, String newLeader) {
super.onLeaderChanged(oldLeader, newLeader);
+ boolean isLeader = isLeader();
LOG.debug("{}: onLeaderChanged: oldLeader: {}, newLeader: {}, isLeader: {}", persistenceId(), oldLeader,
- newLeader, isLeader());
+ newLeader, isLeader);
- if(isLeader()) {
+ if(isLeader) {
// We were just elected leader. If the old leader is down, select new owners for the entities
// owned by the down leader.
LOG.debug("{}: oldLeaderMemberName: {}", persistenceId(), oldLeaderMemberName);
if(downPeerMemberNames.contains(oldLeaderMemberName)) {
- selectNewOwnerForEntitiesOwnedBy(oldLeaderMemberName);
+ removeCandidateFromEntities(oldLeaderMemberName);
}
+ } else {
+ // The leader changed - notify the coordinator to check if pending modifications need to be sent.
+ // While onStateChanged also does this, this method handles the case where the shard hears from a
+ // leader and stays in the follower state. In that case no behavior state change occurs.
+ commitCoordinator.onStateChanged(this, isLeader);
}
}
if(isLeader()) {
String currentOwner = getCurrentOwner(message.getEntityPath());
- if(message.getRemovedCandidate().equals(currentOwner)){
+ if(message.getRemovedCandidate().equals(currentOwner) || message.getRemainingCandidates().size() == 0){
+ String entityType = EntityOwnersModel.entityTypeFromEntityPath(message.getEntityPath());
writeNewOwner(message.getEntityPath(),
- newOwner(message.getRemainingCandidates(), getEntityOwnerElectionStrategy(message.getEntityPath())));
+ newOwner(message.getRemainingCandidates(), entityOwnershipStatistics.byEntityType(entityType),
+ getEntityOwnerElectionStrategy(message.getEntityPath())));
}
} else {
// We're not the leader. If the removed candidate is our local member then check if we actually
EntityOwnerSelectionStrategy strategy = getEntityOwnerElectionStrategy(message.getEntityPath());
if(Strings.isNullOrEmpty(currentOwner)){
if(strategy.getSelectionDelayInMillis() == 0L) {
- writeNewOwner(message.getEntityPath(), newOwner(message.getAllCandidates(), strategy));
+ String entityType = EntityOwnersModel.entityTypeFromEntityPath(message.getEntityPath());
+ writeNewOwner(message.getEntityPath(), newOwner(message.getAllCandidates(),
+ entityOwnershipStatistics.byEntityType(entityType), strategy));
} else {
scheduleOwnerSelection(message.getEntityPath(), message.getAllCandidates(), strategy);
}
peerIdToMemberNames.put(peerUp.getPeerId(), peerUp.getMemberName());
downPeerMemberNames.remove(peerUp.getMemberName());
- }
-
- private void selectNewOwnerForEntitiesOwnedBy(String owner) {
- final BatchedModifications modifications = commitCoordinator.newBatchedModifications();
- searchForEntitiesOwnedBy(owner, new EntityWalker() {
- @Override
- public void onEntity(MapEntryNode entityTypeNode, MapEntryNode entityNode) {
-
- YangInstanceIdentifier entityPath = YangInstanceIdentifier.builder(ENTITY_TYPES_PATH).
- node(entityTypeNode.getIdentifier()).node(ENTITY_NODE_ID).node(entityNode.getIdentifier()).
- node(ENTITY_OWNER_NODE_ID).build();
- Object newOwner = newOwner(getCandidateNames(entityNode), getEntityOwnerElectionStrategy(entityPath));
-
- LOG.debug("{}: Found entity {}, writing new owner {}", persistenceId(), entityPath, newOwner);
-
- modifications.addModification(new WriteModification(entityPath,
- ImmutableNodes.leafNode(ENTITY_OWNER_NODE_ID, newOwner)));
- }
- });
-
- commitCoordinator.commitModifications(modifications, this);
+ // Notify the coordinator to check if pending modifications need to be sent. We do this here
+ // to handle the case where the leader's peer address isn't now yet when a prior state or
+ // leader change occurred.
+ commitCoordinator.onStateChanged(this, isLeader());
}
private void removeCandidateFromEntities(final String owner) {
}
}
- private Collection<String> getCandidateNames(MapEntryNode entity) {
- Collection<MapEntryNode> candidates = ((MapNode) entity.getChild(CANDIDATE_NODE_ID).get()).getValue();
- Collection<String> candidateNames = new ArrayList<>(candidates.size());
- for(MapEntryNode candidate: candidates) {
- candidateNames.add(candidate.getChild(CANDIDATE_NAME_NODE_ID).get().getValue().toString());
- }
-
- return candidateNames;
- }
-
private void writeNewOwner(YangInstanceIdentifier entityPath, String newOwner) {
LOG.debug("{}: Writing new owner {} for entity {}", persistenceId(), newOwner, entityPath);
entityToScheduledOwnershipTask.put(entityPath, lastScheduledTask);
}
- private String newOwner(Collection<String> candidates, EntityOwnerSelectionStrategy ownerSelectionStrategy) {
+ private String newOwner(Collection<String> candidates, Map<String, Long> statistics, EntityOwnerSelectionStrategy ownerSelectionStrategy) {
Collection<String> viableCandidates = getViableCandidates(candidates);
if(viableCandidates.size() == 0){
return "";
}
- return ownerSelectionStrategy.newOwner(viableCandidates);
+ return ownerSelectionStrategy.newOwner(viableCandidates, statistics);
}
private Collection<String> getViableCandidates(Collection<String> candidates) {
Code Review / controller.git / blobdiff