kafka SaslHandshakeRequest 源码
kafka SaslHandshakeRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/SaslHandshakeRequest.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.requests;
import org.apache.kafka.common.message.SaslHandshakeRequestData;
import org.apache.kafka.common.message.SaslHandshakeResponseData;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import java.nio.ByteBuffer;
/**
* Request from SASL client containing client SASL mechanism.
* <p/>
* For interoperability with Kafka 0.9.0.x, the mechanism flow may be omitted when using GSSAPI. Hence
* this request should not conflict with the first GSSAPI client packet. For GSSAPI, the first context
* establishment packet starts with byte 0x60 (APPLICATION-0 tag) followed by a variable-length encoded size.
* This handshake request starts with a request header two-byte API key set to 17, followed by a mechanism name,
* making it easy to distinguish from a GSSAPI packet.
*/
public class SaslHandshakeRequest extends AbstractRequest {
public static class Builder extends AbstractRequest.Builder<SaslHandshakeRequest> {
private final SaslHandshakeRequestData data;
public Builder(SaslHandshakeRequestData data) {
super(ApiKeys.SASL_HANDSHAKE);
this.data = data;
}
@Override
public SaslHandshakeRequest build(short version) {
return new SaslHandshakeRequest(data, version);
}
@Override
public String toString() {
return data.toString();
}
}
private final SaslHandshakeRequestData data;
public SaslHandshakeRequest(SaslHandshakeRequestData data, short version) {
super(ApiKeys.SASL_HANDSHAKE, version);
this.data = data;
}
@Override
public SaslHandshakeRequestData data() {
return data;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable e) {
SaslHandshakeResponseData response = new SaslHandshakeResponseData();
response.setErrorCode(ApiError.fromThrowable(e).error().code());
return new SaslHandshakeResponse(response);
}
public static SaslHandshakeRequest parse(ByteBuffer buffer, short version) {
return new SaslHandshakeRequest(new SaslHandshakeRequestData(new ByteBufferAccessor(buffer), version), version);
}
}
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