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Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/cluster/ClusterMetadataStore.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/cluster/ClusterMetadataStore.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/cluster/ClusterMetadataStore.java b/framework/src/onos/core/api/src/main/java/org/onosproject/cluster/ClusterMetadataStore.java new file mode 100644 index 00000000..7e83b5b5 --- /dev/null +++ b/framework/src/onos/core/api/src/main/java/org/onosproject/cluster/ClusterMetadataStore.java @@ -0,0 +1,77 @@ +/* + * Copyright 2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.onosproject.cluster; + +import java.util.Collection; + +import org.onosproject.store.Store; +import org.onosproject.store.service.Versioned; + +/** + * Manages persistence of cluster metadata; not intended for direct use. + */ +public interface ClusterMetadataStore extends Store<ClusterMetadataEvent, ClusterMetadataStoreDelegate> { + + /** + * Returns the cluster metadata. + * <p> + * The returned metadata is versioned to aid determining if a metadata instance is more recent than another. + * @return cluster metadata + */ + Versioned<ClusterMetadata> getClusterMetadata(); + + /** + * Updates the cluster metadata. + * @param metadata new metadata value + */ + void setClusterMetadata(ClusterMetadata metadata); + + // TODO: The below methods should move to a separate store interface that is responsible for + // tracking cluster partition operational state. + + /** + * Sets a controller node as an active member of a partition. + * <p> + * Active members are those replicas that are up to speed with the rest of the system and are + * usually capable of participating in the replica state management activities in accordance with + * the data consistency and replication protocol in use. + * @param partitionId partition identifier + * @param nodeId id of controller node + */ + void setActiveReplica(String partitionId, NodeId nodeId); + + /** + * Removes a controller node as an active member for a partition. + * <p> + * Active members are those replicas that are up to speed with the rest of the system and are + * usually capable of participating in the replica state management activities in accordance with + * the data consistency and replication protocol in use. + * @param partitionId partition identifier + * @param nodeId id of controller node + */ + void unsetActiveReplica(String partitionId, NodeId nodeId); + + /** + * Returns the collection of controller nodes that are the active replicas for a partition. + * <p> + * Active members are those replicas that are up to speed with the rest of the system and are + * usually capable of participating in the replica state management activities in accordance with + * the data consistency and replication protocol in use. + * @param partitionId partition identifier + * @return identifiers of controller nodes that are the active replicas + */ + Collection<NodeId> getActiveReplicas(String partitionId); +}
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