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TrafficRuleConverter.java
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/
TrafficRuleConverter.java
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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.shardingsphere.proxy.backend.text.distsql.ral.common.convert;
import org.apache.shardingsphere.distsql.parser.segment.AlgorithmSegment;
import org.apache.shardingsphere.distsql.parser.segment.TrafficRuleSegment;
import org.apache.shardingsphere.infra.config.algorithm.ShardingSphereAlgorithmConfiguration;
import org.apache.shardingsphere.traffic.api.config.TrafficRuleConfiguration;
import org.apache.shardingsphere.traffic.api.config.TrafficStrategyConfiguration;
import java.util.Collection;
/**
* Traffic rule converter.
*/
public final class TrafficRuleConverter {
/**
* Convert traffic rule segment to traffic rule configuration.
*
* @param segments traffic rule segments
* @return traffic rule configuration
*/
public static TrafficRuleConfiguration convert(final Collection<TrafficRuleSegment> segments) {
TrafficRuleConfiguration result = new TrafficRuleConfiguration();
segments.forEach(each -> setConfigurationData(result, each));
return result;
}
private static void setConfigurationData(final TrafficRuleConfiguration result, final TrafficRuleSegment each) {
ShardingSphereAlgorithmConfiguration trafficAlgorithm = createAlgorithmConfiguration(each.getAlgorithm());
ShardingSphereAlgorithmConfiguration loadBalancer = createAlgorithmConfiguration(each.getLoadBalancer());
String trafficAlgorithmName = createAlgorithmName(each.getName(), trafficAlgorithm);
String loadBalancerName = createAlgorithmName(each.getName(), loadBalancer);
TrafficStrategyConfiguration trafficStrategy = createTrafficStrategy(each, trafficAlgorithmName, loadBalancerName);
result.getTrafficStrategies().add(trafficStrategy);
result.getTrafficAlgorithms().put(trafficAlgorithmName, trafficAlgorithm);
result.getLoadBalancers().put(loadBalancerName, loadBalancer);
}
private static ShardingSphereAlgorithmConfiguration createAlgorithmConfiguration(final AlgorithmSegment segment) {
return new ShardingSphereAlgorithmConfiguration(segment.getName(), segment.getProps());
}
private static TrafficStrategyConfiguration createTrafficStrategy(final TrafficRuleSegment trafficRuleSegment, final String trafficAlgorithmName, final String loadBalancerName) {
return new TrafficStrategyConfiguration(trafficRuleSegment.getName(), trafficRuleSegment.getLabels(), trafficAlgorithmName, loadBalancerName);
}
private static String createAlgorithmName(final String ruleName, final ShardingSphereAlgorithmConfiguration algorithm) {
return String.format("%s_%s", ruleName, algorithm.getType()).toLowerCase();
}
}