org.springframework.boot.actuate.health.ReactiveHealthIndicatorRegistryFactory 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.Map;
import java.util.function.Function;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Factory to create a {@link HealthIndicatorRegistry}.
*
* @author Stephane Nicoll
* @since 2.1.0
*/
public class ReactiveHealthIndicatorRegistryFactory {
private final Function healthIndicatorNameFactory;
public ReactiveHealthIndicatorRegistryFactory(
Function healthIndicatorNameFactory) {
this.healthIndicatorNameFactory = healthIndicatorNameFactory;
}
public ReactiveHealthIndicatorRegistryFactory() {
this(new HealthIndicatorNameFactory());
}
/**
* Create a {@link ReactiveHealthIndicatorRegistry} based on the specified health
* indicators. Each {@link HealthIndicator} are wrapped to a
* {@link HealthIndicatorReactiveAdapter}. If two instances share the same name, the
* reactive variant takes precedence.
* @param reactiveHealthIndicators the {@link ReactiveHealthIndicator} instances
* mapped by name
* @param healthIndicators the {@link HealthIndicator} instances mapped by name if
* any.
* @return a {@link ReactiveHealthIndicator} that delegates to the specified
* {@code reactiveHealthIndicators}.
*/
public ReactiveHealthIndicatorRegistry createReactiveHealthIndicatorRegistry(
Map reactiveHealthIndicators,
Map healthIndicators) {
Assert.notNull(reactiveHealthIndicators,
"ReactiveHealthIndicators must not be null");
return initialize(new DefaultReactiveHealthIndicatorRegistry(),
reactiveHealthIndicators, healthIndicators);
}
protected T initialize(T registry,
Map reactiveHealthIndicators,
Map healthIndicators) {
merge(reactiveHealthIndicators, healthIndicators)
.forEach((beanName, indicator) -> {
String name = this.healthIndicatorNameFactory.apply(beanName);
registry.register(name, indicator);
});
return registry;
}
private Map merge(
Map reactiveHealthIndicators,
Map healthIndicators) {
if (ObjectUtils.isEmpty(healthIndicators)) {
return reactiveHealthIndicators;
}
Map allIndicators = new LinkedHashMap<>(
reactiveHealthIndicators);
healthIndicators.forEach((beanName, indicator) -> {
String name = this.healthIndicatorNameFactory.apply(beanName);
allIndicators.computeIfAbsent(name,
(n) -> new HealthIndicatorReactiveAdapter(indicator));
});
return allIndicators;
}
}