opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeCohort.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.datastore;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.primitives.UnsignedLong;
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  14 import org.opendaylight.yangtools.concepts.Identifiable;
  15 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  16 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateTip;
  17 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  18
  19 @VisibleForTesting
  20 public abstract class ShardDataTreeCohort implements Identifiable<TransactionIdentifier> {
  21     public enum State {
  22         READY,
  23         CAN_COMMIT_PENDING,
  24         CAN_COMMIT_COMPLETE,
  25         PRE_COMMIT_PENDING,
  26         PRE_COMMIT_COMPLETE,
  27         COMMIT_PENDING,
  28
  29         ABORTED,
  30         COMMITTED,
  31         FAILED,
  32     }
  33
  34     ShardDataTreeCohort() {
  35         // Prevent foreign instantiation
  36     }
  37
  38     // FIXME: This leaks internal state generated in preCommit,
  39     // should be result of canCommit
  40     abstract DataTreeCandidateTip getCandidate();
  41
  42     abstract DataTreeModification getDataTreeModification();
  43
  44     // FIXME: Should return rebased DataTreeCandidateTip
  45     @VisibleForTesting
  46     public abstract void canCommit(FutureCallback<Void> callback);
  47
  48     @VisibleForTesting
  49     public abstract void preCommit(FutureCallback<DataTreeCandidate> callback);
  50
  51     @VisibleForTesting
  52     public abstract void abort(FutureCallback<Void> callback);
  53
  54     @VisibleForTesting
  55     public abstract void commit(FutureCallback<UnsignedLong> callback);
  56
  57     public abstract boolean isFailed();
  58
  59     public abstract State getState();
  60 }