org.springframework.boot.actuate.health.AbstractHealthAggregator Maven / Gradle / Ivy
/*
* Copyright 2012-2018 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
*
* https://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.springframework.boot.actuate.health;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* Base {@link HealthAggregator} implementation to allow subclasses to focus on
* aggregating the {@link Status} instances and not deal with contextual details etc.
*
* @author Christian Dupuis
* @author Vedran Pavic
* @since 1.1.0
*/
public abstract class AbstractHealthAggregator implements HealthAggregator {
@Override
public final Health aggregate(Map healths) {
List statusCandidates = healths.values().stream().map(Health::getStatus)
.collect(Collectors.toList());
Status status = aggregateStatus(statusCandidates);
Map details = aggregateDetails(healths);
return new Health.Builder(status, details).build();
}
/**
* Return the single 'aggregate' status that should be used from the specified
* candidates.
* @param candidates the candidates
* @return a single status
*/
protected abstract Status aggregateStatus(List candidates);
/**
* Return the map of 'aggregate' details that should be used from the specified
* healths.
* @param healths the health instances to aggregate
* @return a map of details
* @since 1.3.1
*/
protected Map aggregateDetails(Map healths) {
return new LinkedHashMap<>(healths);
}
}