kafka DescribeAclsRequest 源码
kafka DescribeAclsRequest 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/requests/DescribeAclsRequest.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.acl.AccessControlEntryFilter;
import org.apache.kafka.common.acl.AclBindingFilter;
import org.apache.kafka.common.acl.AclOperation;
import org.apache.kafka.common.acl.AclPermissionType;
import org.apache.kafka.common.errors.UnsupportedVersionException;
import org.apache.kafka.common.message.DescribeAclsRequestData;
import org.apache.kafka.common.message.DescribeAclsResponseData;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import org.apache.kafka.common.resource.PatternType;
import org.apache.kafka.common.resource.ResourcePatternFilter;
import org.apache.kafka.common.resource.ResourceType;
import java.nio.ByteBuffer;
public class DescribeAclsRequest extends AbstractRequest {
public static class Builder extends AbstractRequest.Builder<DescribeAclsRequest> {
private final DescribeAclsRequestData data;
public Builder(AclBindingFilter filter) {
super(ApiKeys.DESCRIBE_ACLS);
ResourcePatternFilter patternFilter = filter.patternFilter();
AccessControlEntryFilter entryFilter = filter.entryFilter();
data = new DescribeAclsRequestData()
.setHostFilter(entryFilter.host())
.setOperation(entryFilter.operation().code())
.setPermissionType(entryFilter.permissionType().code())
.setPrincipalFilter(entryFilter.principal())
.setResourceNameFilter(patternFilter.name())
.setPatternTypeFilter(patternFilter.patternType().code())
.setResourceTypeFilter(patternFilter.resourceType().code());
}
@Override
public DescribeAclsRequest build(short version) {
return new DescribeAclsRequest(data, version);
}
@Override
public String toString() {
return data.toString();
}
}
private final DescribeAclsRequestData data;
private DescribeAclsRequest(DescribeAclsRequestData data, short version) {
super(ApiKeys.DESCRIBE_ACLS, version);
this.data = data;
normalizeAndValidate(version);
}
private void normalizeAndValidate(short version) {
if (version == 0) {
PatternType patternType = PatternType.fromCode(data.patternTypeFilter());
// On older brokers, no pattern types existed except LITERAL (effectively). So even though ANY is not
// directly supported on those brokers, we can get the same effect as ANY by setting the pattern type
// to LITERAL. Note that the wildcard `*` is considered `LITERAL` for compatibility reasons.
if (patternType == PatternType.ANY)
data.setPatternTypeFilter(PatternType.LITERAL.code());
else if (patternType != PatternType.LITERAL)
throw new UnsupportedVersionException("Version 0 only supports literal resource pattern types");
}
if (data.patternTypeFilter() == PatternType.UNKNOWN.code()
|| data.resourceTypeFilter() == ResourceType.UNKNOWN.code()
|| data.permissionType() == AclPermissionType.UNKNOWN.code()
|| data.operation() == AclOperation.UNKNOWN.code()) {
throw new IllegalArgumentException("DescribeAclsRequest contains UNKNOWN elements: " + data);
}
}
@Override
public DescribeAclsRequestData data() {
return data;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable throwable) {
ApiError error = ApiError.fromThrowable(throwable);
DescribeAclsResponseData response = new DescribeAclsResponseData()
.setThrottleTimeMs(throttleTimeMs)
.setErrorCode(error.error().code())
.setErrorMessage(error.message());
return new DescribeAclsResponse(response, version());
}
public static DescribeAclsRequest parse(ByteBuffer buffer, short version) {
return new DescribeAclsRequest(new DescribeAclsRequestData(new ByteBufferAccessor(buffer), version), version);
}
public AclBindingFilter filter() {
ResourcePatternFilter rpf = new ResourcePatternFilter(
ResourceType.fromCode(data.resourceTypeFilter()),
data.resourceNameFilter(),
PatternType.fromCode(data.patternTypeFilter()));
AccessControlEntryFilter acef = new AccessControlEntryFilter(
data.principalFilter(),
data.hostFilter(),
AclOperation.fromCode(data.operation()),
AclPermissionType.fromCode(data.permissionType()));
return new AclBindingFilter(rpf, acef);
}
}
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