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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.kafka.common.requests;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.Errors;
import org.apache.kafka.common.protocol.types.ArrayOf;
import org.apache.kafka.common.protocol.types.Field;
import org.apache.kafka.common.protocol.types.Schema;
import org.apache.kafka.common.protocol.types.Struct;
import org.apache.kafka.common.utils.CollectionUtils;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.apache.kafka.common.protocol.CommonFields.PARTITION_ID;
import static org.apache.kafka.common.protocol.CommonFields.TOPIC_NAME;
import static org.apache.kafka.common.protocol.types.Type.INT32;
import static org.apache.kafka.common.protocol.types.Type.INT64;
public class DeleteRecordsRequest extends AbstractRequest {
public static final long HIGH_WATERMARK = -1L;
// request level key names
private static final String TOPICS_KEY_NAME = "topics";
private static final String TIMEOUT_KEY_NAME = "timeout";
// topic level key names
private static final String PARTITIONS_KEY_NAME = "partitions";
// partition level key names
private static final String OFFSET_KEY_NAME = "offset";
private static final Schema DELETE_RECORDS_REQUEST_PARTITION_V0 = new Schema(
PARTITION_ID,
new Field(OFFSET_KEY_NAME, INT64, "The offset before which the messages will be deleted. -1 means high-watermark for the partition."));
private static final Schema DELETE_RECORDS_REQUEST_TOPIC_V0 = new Schema(
TOPIC_NAME,
new Field(PARTITIONS_KEY_NAME, new ArrayOf(DELETE_RECORDS_REQUEST_PARTITION_V0)));
private static final Schema DELETE_RECORDS_REQUEST_V0 = new Schema(
new Field(TOPICS_KEY_NAME, new ArrayOf(DELETE_RECORDS_REQUEST_TOPIC_V0)),
new Field(TIMEOUT_KEY_NAME, INT32, "The maximum time to await a response in ms."));
/**
* The version number is bumped to indicate that on quota violation brokers send out responses before throttling.
*/
private static final Schema DELETE_RECORDS_REQUEST_V1 = DELETE_RECORDS_REQUEST_V0;
public static Schema[] schemaVersions() {
return new Schema[]{DELETE_RECORDS_REQUEST_V0, DELETE_RECORDS_REQUEST_V1};
}
private final int timeout;
private final Map partitionOffsets;
public static class Builder extends AbstractRequest.Builder {
private final int timeout;
private final Map partitionOffsets;
public Builder(int timeout, Map partitionOffsets) {
super(ApiKeys.DELETE_RECORDS);
this.timeout = timeout;
this.partitionOffsets = partitionOffsets;
}
@Override
public DeleteRecordsRequest build(short version) {
return new DeleteRecordsRequest(timeout, partitionOffsets, version);
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("(type=DeleteRecordsRequest")
.append(", timeout=").append(timeout)
.append(", partitionOffsets=(").append(partitionOffsets)
.append("))");
return builder.toString();
}
}
public DeleteRecordsRequest(Struct struct, short version) {
super(ApiKeys.DELETE_RECORDS, version);
partitionOffsets = new HashMap<>();
for (Object topicStructObj : struct.getArray(TOPICS_KEY_NAME)) {
Struct topicStruct = (Struct) topicStructObj;
String topic = topicStruct.get(TOPIC_NAME);
for (Object partitionStructObj : topicStruct.getArray(PARTITIONS_KEY_NAME)) {
Struct partitionStruct = (Struct) partitionStructObj;
int partition = partitionStruct.get(PARTITION_ID);
long offset = partitionStruct.getLong(OFFSET_KEY_NAME);
partitionOffsets.put(new TopicPartition(topic, partition), offset);
}
}
timeout = struct.getInt(TIMEOUT_KEY_NAME);
}
public DeleteRecordsRequest(int timeout, Map partitionOffsets, short version) {
super(ApiKeys.DELETE_RECORDS, version);
this.timeout = timeout;
this.partitionOffsets = partitionOffsets;
}
@Override
protected Struct toStruct() {
Struct struct = new Struct(ApiKeys.DELETE_RECORDS.requestSchema(version()));
Map> offsetsByTopic = CollectionUtils.groupPartitionDataByTopic(partitionOffsets);
struct.set(TIMEOUT_KEY_NAME, timeout);
List topicStructArray = new ArrayList<>();
for (Map.Entry> offsetsByTopicEntry : offsetsByTopic.entrySet()) {
Struct topicStruct = struct.instance(TOPICS_KEY_NAME);
topicStruct.set(TOPIC_NAME, offsetsByTopicEntry.getKey());
List partitionStructArray = new ArrayList<>();
for (Map.Entry offsetsByPartitionEntry : offsetsByTopicEntry.getValue().entrySet()) {
Struct partitionStruct = topicStruct.instance(PARTITIONS_KEY_NAME);
partitionStruct.set(PARTITION_ID, offsetsByPartitionEntry.getKey());
partitionStruct.set(OFFSET_KEY_NAME, offsetsByPartitionEntry.getValue());
partitionStructArray.add(partitionStruct);
}
topicStruct.set(PARTITIONS_KEY_NAME, partitionStructArray.toArray());
topicStructArray.add(topicStruct);
}
struct.set(TOPICS_KEY_NAME, topicStructArray.toArray());
return struct;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable e) {
Map responseMap = new HashMap<>();
for (Map.Entry entry : partitionOffsets.entrySet()) {
responseMap.put(entry.getKey(), new DeleteRecordsResponse.PartitionResponse(DeleteRecordsResponse.INVALID_LOW_WATERMARK, Errors.forException(e)));
}
short versionId = version();
switch (versionId) {
case 0:
case 1:
return new DeleteRecordsResponse(throttleTimeMs, responseMap);
default:
throw new IllegalArgumentException(String.format("Version %d is not valid. Valid versions for %s are 0 to %d",
versionId, this.getClass().getSimpleName(), ApiKeys.DELETE_RECORDS.latestVersion()));
}
}
public int timeout() {
return timeout;
}
public Map partitionOffsets() {
return partitionOffsets;
}
public static DeleteRecordsRequest parse(ByteBuffer buffer, short version) {
return new DeleteRecordsRequest(ApiKeys.DELETE_RECORDS.parseRequest(version, buffer), version);
}
}
