com.github.enadim.spring.cloud.ribbon.rule.PredicateBasedRuleSupport Maven / Gradle / Ivy
/*
* Copyright (c) 2017 the original author or authors
*
* Licensed 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 com.github.enadim.spring.cloud.ribbon.rule;
import com.netflix.loadbalancer.AbstractServerPredicate;
import com.netflix.loadbalancer.PredicateBasedRule;
import javax.inject.Inject;
import javax.validation.constraints.NotNull;
/**
* Convenient support of predicate based rule.
* Defines a non final property predicate to satisfy the circular dependency between {@link PredicateBasedRule} and {@link AbstractServerPredicate}.
*
* @author Nadim Benabdenbi
*/
public class PredicateBasedRuleSupport extends PredicateBasedRule {
/**
* the delegate predicate.
*/
@Inject
private AbstractServerPredicate predicate;
/**
* Creates new default instance
*/
public PredicateBasedRuleSupport() {
super();
}
/**
* Creates new instance of {@link PredicateBasedRuleSupport} class with specific predicate.
*
* @param predicate the server predicate, can't be null
* @throws IllegalArgumentException if {@code predicate} is {@code null}
*/
public PredicateBasedRuleSupport(AbstractServerPredicate predicate) {
setPredicate(predicate);
}
/**
* Convenient delegate predicate setter.
*
* @param predicate the rule predicate.
*/
public void setPredicate(@NotNull AbstractServerPredicate predicate) {
this.predicate = predicate;
}
/**
* {@inheritDoc}
*/
@Override
public AbstractServerPredicate getPredicate() {
return predicate;
}
}