* 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.ActorPath;
-import akka.actor.ActorRef;
-import akka.actor.Address;
-import akka.actor.OneForOneStrategy;
-import akka.actor.Props;
-import akka.actor.SupervisorStrategy;
-import akka.cluster.ClusterEvent;
-import akka.japi.Creator;
-import akka.japi.Function;
-import com.google.common.base.Preconditions;
-import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
-import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolved;
-import org.opendaylight.controller.cluster.datastore.messages.PrimaryFound;
-import org.opendaylight.controller.cluster.datastore.messages.PrimaryNotFound;
-import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
-import scala.concurrent.duration.Duration;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.io.Serializable;
+import java.util.Set;
/**
- * The ShardManager has the following jobs,
- * <p>
- * <li> Create all the local shard replicas that belong on this cluster member
- * <li> Find the primary replica for any given shard
- * <li> Engage in shard replica elections which decide which replica should be the primary
- * </p>
- * <p/>
- * <h3>>Creation of Shard replicas</h3
- * <p>
- * When the ShardManager is constructed it reads the cluster configuration to find out which shard replicas
- * belong on this member. It finds out the name of the current cluster member from the Akka Clustering Service.
- * </p>
- * <p/>
- * <h3> Replica Elections </h3>
- * <p/>
- * <p>
- * The Shard Manager uses multiple cues to initiate election.
- * <li> When a member of the cluster dies
- * <li> When a local shard replica dies
- * <li> When a local shard replica comes alive
- * </p>
+ * Manages shards.
+ *
+ * @deprecated This is a deprecated placeholder to keep its inner class present. It serves no other purpose.
*/
-public class ShardManager extends AbstractUntypedActor {
-
- // Stores a mapping between a member name and the address of the member
- private final Map<String, Address> memberNameToAddress = new HashMap<>();
-
- private final Map<String, ShardInformation> localShards = new HashMap<>();
-
-
- private final String type;
-
- private final ClusterWrapper cluster;
-
- private final Configuration configuration;
-
+@Deprecated
+public final class ShardManager {
/**
- * @param type defines the kind of data that goes into shards created by this shard manager. Examples of type would be
- * configuration or operational
+ * We no longer persist SchemaContextModules but keep this class around for now for backwards
+ * compatibility so we don't get de-serialization failures on upgrade from Helium.
*/
- private ShardManager(String type, ClusterWrapper cluster, Configuration configuration) {
-
- this.type = Preconditions.checkNotNull(type, "type should not be null");
- this.cluster = Preconditions.checkNotNull(cluster, "cluster should not be null");
- this.configuration = Preconditions.checkNotNull(configuration, "configuration should not be null");
-
- // Subscribe this actor to cluster member events
- cluster.subscribeToMemberEvents(getSelf());
-
- // Create all the local Shards and make them a child of the ShardManager
- // TODO: This may need to be initiated when we first get the schema context
- createLocalShards();
- }
-
- public static Props props(final String type,
- final ClusterWrapper cluster,
- final Configuration configuration) {
- return Props.create(new Creator<ShardManager>() {
-
- @Override
- public ShardManager create() throws Exception {
- return new ShardManager(type, cluster, configuration);
- }
- });
- }
-
-
- @Override
- public void handleReceive(Object message) throws Exception {
- if (message.getClass().equals(FindPrimary.SERIALIZABLE_CLASS)) {
- findPrimary(
- FindPrimary.fromSerializable(message));
-
- } else if (message instanceof UpdateSchemaContext) {
- updateSchemaContext(message);
- } else if (message instanceof ClusterEvent.MemberUp){
- memberUp((ClusterEvent.MemberUp) message);
- } else if(message instanceof ClusterEvent.MemberRemoved) {
- memberRemoved((ClusterEvent.MemberRemoved) message);
- } else if(message instanceof ClusterEvent.UnreachableMember) {
- ignoreMessage(message);
- } else{
- throw new Exception ("Not recognized message received, message="+message);
- }
-
- }
-
- private void ignoreMessage(Object message){
- LOG.debug("Unhandled message : " + message);
- }
-
- private void memberRemoved(ClusterEvent.MemberRemoved message) {
- memberNameToAddress.remove(message.member().roles().head());
- }
-
- private void memberUp(ClusterEvent.MemberUp message) {
- String memberName = message.member().roles().head();
-
- memberNameToAddress.put(memberName , message.member().address());
-
- for(ShardInformation info : localShards.values()){
- String shardName = info.getShardName();
- info.updatePeerAddress(getShardActorName(memberName, shardName),
- getShardActorPath(shardName, memberName));
- }
- }
-
- private void updateSchemaContext(Object message) {
- for(ShardInformation info : localShards.values()){
- info.getActor().tell(message,getSelf());
- }
- }
-
- private void findPrimary(FindPrimary message) {
- String shardName = message.getShardName();
-
- List<String> members =
- configuration.getMembersFromShardName(shardName);
-
- // First see if the there is a local replica for the shard
- ShardInformation info = localShards.get(shardName);
- if(info != null) {
- ActorPath shardPath = info.getActorPath();
- if (shardPath != null) {
- getSender()
- .tell(
- new PrimaryFound(shardPath.toString()).toSerializable(),
- getSelf());
- return;
- }
- }
-
- if(cluster.getCurrentMemberName() != null) {
- members.remove(cluster.getCurrentMemberName());
- }
-
- // There is no way for us to figure out the primary (for now) so assume
- // that one of the remote nodes is a primary
- for(String memberName : members) {
- Address address = memberNameToAddress.get(memberName);
- if(address != null){
- String path =
- getShardActorPath(shardName, memberName);
- getSender().tell(new PrimaryFound(path).toSerializable(), getSelf());
- return;
- }
- }
- getSender().tell(new PrimaryNotFound(shardName).toSerializable(), getSelf());
- }
-
- private String
+ @Deprecated
+ public static class SchemaContextModules implements Serializable {
+ private static final long serialVersionUID = -8884620101025936590L;
+ private final Set<String> modules;
- getShardActorPath(String shardName, String memberName) {
- Address address = memberNameToAddress.get(memberName);
- if(address != null) {
- return address.toString() + "/user/shardmanager-" + this.type + "/"
- + getShardActorName(
- memberName, shardName);
+ public SchemaContextModules(Set<String> modules) {
+ this.modules = modules;
}
- return null;
- }
-
- private String getShardActorName(String memberName, String shardName){
- return memberName + "-shard-" + shardName + "-" + this.type;
- }
-
- // Create the shards that are local to this member
- private void createLocalShards() {
- String memberName = this.cluster.getCurrentMemberName();
- List<String> memberShardNames =
- this.configuration.getMemberShardNames(memberName);
-
- for(String shardName : memberShardNames){
- String shardActorName = getShardActorName(memberName, shardName);
- Map<String, String> peerAddresses = getPeerAddresses(shardName);
- ActorRef actor = getContext()
- .actorOf(Shard.props(shardActorName, peerAddresses),
- shardActorName);
- localShards.put(shardName, new ShardInformation(shardName, actor, peerAddresses));
- }
-
- }
-
- private Map<String, String> getPeerAddresses(String shardName){
-
- Map<String, String> peerAddresses = new HashMap<>();
-
- List<String> members =
- this.configuration.getMembersFromShardName(shardName);
-
- String currentMemberName = this.cluster.getCurrentMemberName();
- for(String memberName : members){
- if(!currentMemberName.equals(memberName)){
- String shardActorName = getShardActorName(memberName, shardName);
- String path =
- getShardActorPath(shardName, currentMemberName);
- peerAddresses.put(shardActorName, path);
- }
+ public Set<String> getModules() {
+ return modules;
}
- return peerAddresses;
}
-
- @Override
- public SupervisorStrategy supervisorStrategy() {
- return new OneForOneStrategy(10, Duration.create("1 minute"),
- new Function<Throwable, SupervisorStrategy.Directive>() {
- @Override
- public SupervisorStrategy.Directive apply(Throwable t) {
- return SupervisorStrategy.resume();
- }
- }
- );
-
- }
-
- private class ShardInformation {
- private final String shardName;
- private final ActorRef actor;
- private final ActorPath actorPath;
- private final Map<String, String> peerAddresses;
-
- private ShardInformation(String shardName, ActorRef actor,
- Map<String, String> peerAddresses) {
- this.shardName = shardName;
- this.actor = actor;
- this.actorPath = actor.path();
- this.peerAddresses = peerAddresses;
- }
-
- public String getShardName() {
- return shardName;
- }
-
- public ActorRef getActor(){
- return actor;
- }
-
- public ActorPath getActorPath() {
- return actorPath;
- }
-
- public Map<String, String> getPeerAddresses() {
- return peerAddresses;
- }
-
- public void updatePeerAddress(String peerId, String peerAddress){
- LOG.info("updatePeerAddress for peer {} with address {}", peerId, peerAddress);
- if(peerAddresses.containsKey(peerId)){
- peerAddresses.put(peerId, peerAddress);
-
- LOG.info("Sending PeerAddressResolved for peer {} with address {} to {}", peerId, peerAddress, actor.path());
-
- actor
- .tell(new PeerAddressResolved(peerId, peerAddress),
- getSelf());
-
- }
- }
+ private ShardManager() {
+ throw new UnsupportedOperationException("deprecated outer class");
}
}
Code Review / controller.git / blobdiff