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/**
* 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.hadoop.ozone.container.common.helpers;
import com.google.common.collect.Maps;
import org.apache.hadoop.hdds.protocol.proto
.StorageContainerDatanodeProtocolProtos.DeletedBlocksTransaction;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* A helper class to wrap the info about under deletion container blocks.
*/
public final class DeletedContainerBlocksSummary {
private final List<DeletedBlocksTransaction> blocks;
// key : txID
// value : times of this tx has been processed
private final Map<Long, Integer> txSummary;
// key : container name
// value : the number of blocks need to be deleted in this container
// if the message contains multiple entries for same block,
// blocks will be merged
private final Map<String, Integer> blockSummary;
// total number of blocks in this message
private int numOfBlocks;
private DeletedContainerBlocksSummary(List<DeletedBlocksTransaction> blocks) {
this.blocks = blocks;
txSummary = Maps.newHashMap();
blockSummary = Maps.newHashMap();
blocks.forEach(entry -> {
txSummary.put(entry.getTxID(), entry.getCount());
if (blockSummary.containsKey(entry.getContainerName())) {
blockSummary.put(entry.getContainerName(),
blockSummary.get(entry.getContainerName())
+ entry.getBlockIDCount());
} else {
blockSummary.put(entry.getContainerName(), entry.getBlockIDCount());
}
numOfBlocks += entry.getBlockIDCount();
});
}
public static DeletedContainerBlocksSummary getFrom(
List<DeletedBlocksTransaction> blocks) {
return new DeletedContainerBlocksSummary(blocks);
}
public int getNumOfBlocks() {
return numOfBlocks;
}
public int getNumOfContainers() {
return blockSummary.size();
}
public String getTXIDs() {
return String.join(",", txSummary.keySet()
.stream().map(String::valueOf).collect(Collectors.toList()));
}
public String getTxIDSummary() {
List<String> txSummaryEntry = txSummary.entrySet().stream()
.map(entry -> entry.getKey() + "(" + entry.getValue() + ")")
.collect(Collectors.toList());
return "[" + String.join(",", txSummaryEntry) + "]";
}
@Override public String toString() {
StringBuffer sb = new StringBuffer();
for (DeletedBlocksTransaction blks : blocks) {
sb.append(" ")
.append("TXID=")
.append(blks.getTxID())
.append(", ")
.append("TimesProceed=")
.append(blks.getCount())
.append(", ")
.append(blks.getContainerName())
.append(" : [")
.append(String.join(",", blks.getBlockIDList())).append("]")
.append("\n");
}
return sb.toString();
}
}
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