kafka Writable 源码
kafka Writable 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/protocol/Writable.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 org.apache.kafka.common.protocol;
import org.apache.kafka.common.Uuid;
import org.apache.kafka.common.record.BaseRecords;
import org.apache.kafka.common.record.MemoryRecords;
import java.nio.ByteBuffer;
public interface Writable {
void writeByte(byte val);
void writeShort(short val);
void writeInt(int val);
void writeLong(long val);
void writeDouble(double val);
void writeByteArray(byte[] arr);
void writeUnsignedVarint(int i);
void writeByteBuffer(ByteBuffer buf);
void writeVarint(int i);
void writeVarlong(long i);
default void writeRecords(BaseRecords records) {
if (records instanceof MemoryRecords) {
MemoryRecords memRecords = (MemoryRecords) records;
writeByteBuffer(memRecords.buffer());
} else {
throw new UnsupportedOperationException("Unsupported record type " + records.getClass());
}
}
default void writeUuid(Uuid uuid) {
writeLong(uuid.getMostSignificantBits());
writeLong(uuid.getLeastSignificantBits());
}
default void writeUnsignedShort(int i) {
// The setter functions in the generated code prevent us from setting
// ints outside the valid range of a short.
writeShort((short) i);
}
default void writeUnsignedInt(long i) {
writeInt((int) i);
}
}
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