kafka DescribeClientQuotasRequest 源码

kafka DescribeClientQuotasRequest 代码

文件路径：/clients/src/main/java/org/apache/kafka/common/requests/DescribeClientQuotasRequest.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.DescribeClientQuotasRequestData;
import org.apache.kafka.common.message.DescribeClientQuotasRequestData.ComponentData;
import org.apache.kafka.common.message.DescribeClientQuotasResponseData;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.ByteBufferAccessor;
import org.apache.kafka.common.quota.ClientQuotaFilter;
import org.apache.kafka.common.quota.ClientQuotaFilterComponent;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

public class DescribeClientQuotasRequest extends AbstractRequest {
    // These values must not change.
    public static final byte MATCH_TYPE_EXACT = 0;
    public static final byte MATCH_TYPE_DEFAULT = 1;
    public static final byte MATCH_TYPE_SPECIFIED = 2;

    public static class Builder extends AbstractRequest.Builder<DescribeClientQuotasRequest> {

        private final DescribeClientQuotasRequestData data;

        public Builder(ClientQuotaFilter filter) {
            super(ApiKeys.DESCRIBE_CLIENT_QUOTAS);

            List<ComponentData> componentData = new ArrayList<>(filter.components().size());
            for (ClientQuotaFilterComponent component : filter.components()) {
                ComponentData fd = new ComponentData().setEntityType(component.entityType());
                if (component.match() == null) {
                    fd.setMatchType(MATCH_TYPE_SPECIFIED);
                    fd.setMatch(null);
                } else if (component.match().isPresent()) {
                    fd.setMatchType(MATCH_TYPE_EXACT);
                    fd.setMatch(component.match().get());
                } else {
                    fd.setMatchType(MATCH_TYPE_DEFAULT);
                    fd.setMatch(null);
                }
                componentData.add(fd);
            }
            this.data = new DescribeClientQuotasRequestData()
                .setComponents(componentData)
                .setStrict(filter.strict());
        }

        @Override
        public DescribeClientQuotasRequest build(short version) {
            return new DescribeClientQuotasRequest(data, version);
        }

        @Override
        public String toString() {
            return data.toString();
        }
    }

    private final DescribeClientQuotasRequestData data;

    public DescribeClientQuotasRequest(DescribeClientQuotasRequestData data, short version) {
        super(ApiKeys.DESCRIBE_CLIENT_QUOTAS, version);
        this.data = data;
    }

    public ClientQuotaFilter filter() {
        List<ClientQuotaFilterComponent> components = new ArrayList<>(data.components().size());
        for (ComponentData componentData : data.components()) {
            ClientQuotaFilterComponent component;
            switch (componentData.matchType()) {
                case MATCH_TYPE_EXACT:
                    component = ClientQuotaFilterComponent.ofEntity(componentData.entityType(), componentData.match());
                    break;
                case MATCH_TYPE_DEFAULT:
                    component = ClientQuotaFilterComponent.ofDefaultEntity(componentData.entityType());
                    break;
                case MATCH_TYPE_SPECIFIED:
                    component = ClientQuotaFilterComponent.ofEntityType(componentData.entityType());
                    break;
                default:
                    throw new IllegalArgumentException("Unexpected match type: " + componentData.matchType());
            }
            components.add(component);
        }
        if (data.strict()) {
            return ClientQuotaFilter.containsOnly(components);
        } else {
            return ClientQuotaFilter.contains(components);
        }
    }

    @Override
    public DescribeClientQuotasRequestData data() {
        return data;
    }

    @Override
    public DescribeClientQuotasResponse getErrorResponse(int throttleTimeMs, Throwable e) {
        ApiError error = ApiError.fromThrowable(e);
        return new DescribeClientQuotasResponse(new DescribeClientQuotasResponseData()
            .setThrottleTimeMs(throttleTimeMs)
            .setErrorCode(error.error().code())
            .setErrorMessage(error.message())
            .setEntries(null));
    }

    public static DescribeClientQuotasRequest parse(ByteBuffer buffer, short version) {
        return new DescribeClientQuotasRequest(new DescribeClientQuotasRequestData(new ByteBufferAccessor(buffer), version),
            version);
    }

}

相关信息

kafka 源码目录

相关文章

kafka AbstractControlRequest 源码

kafka AbstractRequest 源码

kafka AbstractRequestResponse 源码

kafka AbstractResponse 源码

kafka AddOffsetsToTxnRequest 源码

kafka AddOffsetsToTxnResponse 源码

kafka AddPartitionsToTxnRequest 源码

kafka AddPartitionsToTxnResponse 源码

kafka AllocateProducerIdsRequest 源码

kafka AllocateProducerIdsResponse 源码