/*
* Copyright 2012-2017 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 org.springframework.boot.actuate.health;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.util.Assert;
/**
* {@link HealthIndicator} that returns health indications from all registered delegates.
*
* @author Tyler J. Frederick
* @author Phillip Webb
* @author Christian Dupuis
* @since 1.1.0
*/
public class CompositeHealthIndicator implements HealthIndicator {
private final Map<String, HealthIndicator> indicators;
private final HealthAggregator healthAggregator;
/**
* Create a new {@link CompositeHealthIndicator}.
* @param healthAggregator the health aggregator
*/
public CompositeHealthIndicator(HealthAggregator healthAggregator) {
this(healthAggregator, new LinkedHashMap<String, HealthIndicator>());
}
/**
* Create a new {@link CompositeHealthIndicator} from the specified indicators.
* @param healthAggregator the health aggregator
* @param indicators a map of {@link HealthIndicator}s with the key being used as an
* indicator name.
*/
public CompositeHealthIndicator(HealthAggregator healthAggregator,
Map<String, HealthIndicator> indicators) {
Assert.notNull(healthAggregator, "HealthAggregator must not be null");
Assert.notNull(indicators, "Indicators must not be null");
this.indicators = new LinkedHashMap<>(indicators);
this.healthAggregator = healthAggregator;
}
public void addHealthIndicator(String name, HealthIndicator indicator) {
this.indicators.put(name, indicator);
}
@Override
public Health health() {
Map<String, Health> healths = new LinkedHashMap<>();
for (Map.Entry<String, HealthIndicator> entry : this.indicators.entrySet()) {
healths.put(entry.getKey(), entry.getValue().health());
}
return this.healthAggregator.aggregate(healths);
}
}