accord-core/src/main/java/accord/messages/SetShardDurable.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 accord.messages;

import accord.local.PreLoadContext;
import accord.local.SafeCommandStore;
import accord.primitives.Ranges;
import accord.primitives.SyncPoint;
import accord.utils.MapReduceConsume;

import static accord.messages.SimpleReply.Ok;

public class SetShardDurable extends AbstractEpochRequest<SimpleReply>
        implements Request, PreLoadContext, MapReduceConsume<SafeCommandStore, SimpleReply>
{
    public final SyncPoint exclusiveSyncPoint;

    public SetShardDurable(SyncPoint exclusiveSyncPoint)
    {
        super(null);
        this.exclusiveSyncPoint = exclusiveSyncPoint;
    }

    @Override
    public void process()
    {
        node.mapReduceConsumeLocal(this, exclusiveSyncPoint.keysOrRanges, waitForEpoch(), waitForEpoch(), this);
    }

    @Override
    public SimpleReply apply(SafeCommandStore safeStore)
    {
        safeStore.commandStore().markShardDurable(safeStore, exclusiveSyncPoint.syncId, (Ranges)exclusiveSyncPoint.keysOrRanges);
        return Ok;
    }

    @Override
    public SimpleReply reduce(SimpleReply r1, SimpleReply r2)
    {
        return r1.merge(r2);
    }

    @Override
    public void accept(SimpleReply ok, Throwable failure)
    {
    }

    @Override
    public String toString()
    {
        return "SetShardDurable{" + exclusiveSyncPoint + '}';
    }

    @Override
    public MessageType type()
    {
        return MessageType.SET_SHARD_DURABLE_REQ;
    }

    @Override
    public long waitForEpoch()
    {
        return exclusiveSyncPoint.syncId.epoch();
    }
}