content: /*
   * 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 org.apache.cassandra.service.paxos.cleanup;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.cassandra.db.ColumnFamilyStore;
  import org.apache.cassandra.db.TypeSizes;
  import org.apache.cassandra.dht.AbstractBounds;
  import org.apache.cassandra.dht.IPartitioner;
  import org.apache.cassandra.dht.Range;
  import org.apache.cassandra.dht.Token;
  import org.apache.cassandra.exceptions.RequestFailure;
  import org.apache.cassandra.io.IVersionedSerializer;
  import org.apache.cassandra.io.util.DataInputPlus;
  import org.apache.cassandra.io.util.DataOutputPlus;
  import org.apache.cassandra.locator.InetAddressAndPort;
  import org.apache.cassandra.net.IVerbHandler;
  import org.apache.cassandra.net.Message;
  import org.apache.cassandra.net.RequestCallbackWithFailure;
  import org.apache.cassandra.repair.SharedContext;
  import org.apache.cassandra.schema.Schema;
  import org.apache.cassandra.schema.TableId;
  import org.apache.cassandra.schema.TableMetadata;
  import org.apache.cassandra.service.paxos.Ballot;
  import org.apache.cassandra.utils.concurrent.AsyncFuture;
  
  import static org.apache.cassandra.net.NoPayload.noPayload;
  import static org.apache.cassandra.net.Verb.PAXOS2_CLEANUP_COMPLETE_REQ;
  
  public class PaxosCleanupComplete extends AsyncFuture<Void> implements RequestCallbackWithFailure<Void>, Runnable
  {
      private final Set<InetAddressAndPort> waitingResponse;
      final TableId tableId;
      final Collection<Range<Token>> ranges;
      final Ballot lowBound;
      final boolean skippedReplicas;
      private final SharedContext ctx;
      private final boolean isUrgent;
  
      PaxosCleanupComplete(SharedContext ctx, Collection<InetAddressAndPort> endpoints, TableId tableId, Collection<Range<Token>> ranges, Ballot lowBound, boolean skippedReplicas, boolean isUrgent)
      {
          this.ctx = ctx;
          this.waitingResponse = new HashSet<>(endpoints);
          this.tableId = tableId;
          this.ranges = ranges;
          this.lowBound = lowBound;
          this.skippedReplicas = skippedReplicas;
          this.isUrgent = isUrgent;
      }
  
      public synchronized void run()
      {
          Request request = !skippedReplicas ? new Request(tableId, lowBound, ranges)
                                             : new Request(tableId, Ballot.none(), Collections.emptyList());
  
          Message<Request> message = Message.out(PAXOS2_CLEANUP_COMPLETE_REQ, request, isUrgent);
  
          for (InetAddressAndPort endpoint : waitingResponse)
              ctx.messaging().sendWithCallback(message, endpoint, this);
      }
  
      @Override
      public void onFailure(InetAddressAndPort from, RequestFailure reason)
      {
          tryFailure(new PaxosCleanupException("Timed out waiting on response from " + from));
      }
  
      @Override
      public synchronized void onResponse(Message<Void> msg)
      {
          if (isDone())
              return;
  
          if (!waitingResponse.remove(msg.from()))
              throw new IllegalArgumentException("Received unexpected response from " + msg.from());
  
          if (waitingResponse.isEmpty())
              trySuccess(null);
      }
  
      public static class Request
      {
          final TableId tableId;
          final Ballot lowBound;
          final Collection<Range<Token>> ranges;
  
          Request(TableId tableId, Ballot lowBound, Collection<Range<Token>> ranges)
          {
              this.tableId = tableId;
              this.ranges = ranges;
              this.lowBound = lowBound;
          }
      }
  
      public static final IVersionedSerializer<Request> serializer = new IVersionedSerializer<Request>()
      {
          public void serialize(Request request, DataOutputPlus out, int version) throws IOException
          {
              request.tableId.serialize(out);
              request.lowBound.serialize(out);
              out.writeInt(request.ranges.size());
              for (Range<Token> rt : request.ranges)
                  AbstractBounds.tokenSerializer.serialize(rt, out, version);
          }
  
          public Request deserialize(DataInputPlus in, int version) throws IOException
          {
              TableId tableId = TableId.deserialize(in);
              Ballot lowBound = Ballot.deserialize(in);
              TableMetadata table = Schema.instance.getTableMetadata(tableId);
              IPartitioner partitioner = table != null ? table.partitioner : IPartitioner.global();
              int numRanges = in.readInt();
              List<Range<Token>> ranges = new ArrayList<>();
              for (int i = 0; i < numRanges; i++)
              {
                  Range<Token> range = (Range<Token>) AbstractBounds.tokenSerializer.deserialize(in, partitioner, version);
                  ranges.add(range);
              }
              return new Request(tableId, lowBound, ranges);
          }
  
          public long serializedSize(Request request, int version)
          {
              long size = request.tableId.serializedSize();
              size += Ballot.sizeInBytes();
              size += TypeSizes.sizeof(request.ranges.size());
              for (Range<Token> range : request.ranges)
                  size += AbstractBounds.tokenSerializer.serializedSize(range, version);
              return size;
          }
      };
  
      public static IVerbHandler<Request> createVerbHandler(SharedContext ctx)
      {
          return (in) -> {
              ColumnFamilyStore cfs = Schema.instance.getColumnFamilyStoreInstance(in.payload.tableId);
              cfs.onPaxosRepairComplete(in.payload.ranges, in.payload.lowBound);
              ctx.messaging().respond(noPayload, in);
          };
      }
  
      public static final IVerbHandler<Request> verbHandler = createVerbHandler(SharedContext.Global.instance);
  }
  