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Spring Boot Actuator AutoConfigure
/*
* Copyright 2012-2019 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.autoconfigure.jdbc;
import java.util.Collection;
import java.util.Map;
import java.util.stream.Collectors;
import javax.sql.DataSource;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.actuate.autoconfigure.health.CompositeHealthContributorConfiguration;
import org.springframework.boot.actuate.autoconfigure.health.ConditionalOnEnabledHealthIndicator;
import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health.Builder;
import org.springframework.boot.actuate.health.HealthContributor;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.boot.actuate.jdbc.DataSourceHealthIndicator;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.jdbc.metadata.CompositeDataSourcePoolMetadataProvider;
import org.springframework.boot.jdbc.metadata.DataSourcePoolMetadata;
import org.springframework.boot.jdbc.metadata.DataSourcePoolMetadataProvider;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
/**
* {@link EnableAutoConfiguration Auto-configuration} for
* {@link DataSourceHealthIndicator}.
*
* @author Dave Syer
* @author Christian Dupuis
* @author Andy Wilkinson
* @author Stephane Nicoll
* @author Arthur Kalimullin
* @since 2.0.0
*/
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass({ JdbcTemplate.class, AbstractRoutingDataSource.class })
@ConditionalOnBean(DataSource.class)
@ConditionalOnEnabledHealthIndicator("db")
@AutoConfigureAfter(DataSourceAutoConfiguration.class)
public class DataSourceHealthContributorAutoConfiguration extends
CompositeHealthContributorConfiguration implements InitializingBean {
private final Collection metadataProviders;
private DataSourcePoolMetadataProvider poolMetadataProvider;
public DataSourceHealthContributorAutoConfiguration(Map dataSources,
ObjectProvider metadataProviders) {
this.metadataProviders = metadataProviders.orderedStream().collect(Collectors.toList());
}
@Override
public void afterPropertiesSet() throws Exception {
this.poolMetadataProvider = new CompositeDataSourcePoolMetadataProvider(this.metadataProviders);
}
@Bean
@ConditionalOnMissingBean(name = { "dbHealthIndicator", "dbHealthContributor" })
public HealthContributor dbHealthContributor(Map dataSources) {
return createContributor(dataSources);
}
@Override
protected AbstractHealthIndicator createIndicator(DataSource source) {
if (source instanceof AbstractRoutingDataSource) {
return new RoutingDataSourceHealthIndicator();
}
return new DataSourceHealthIndicator(source, getValidationQuery(source));
}
private String getValidationQuery(DataSource source) {
DataSourcePoolMetadata poolMetadata = this.poolMetadataProvider.getDataSourcePoolMetadata(source);
return (poolMetadata != null) ? poolMetadata.getValidationQuery() : null;
}
/**
* {@link HealthIndicator} used for {@link AbstractRoutingDataSource} beans where we
* can't actually query for the status.
*/
static class RoutingDataSourceHealthIndicator extends AbstractHealthIndicator {
@Override
protected void doHealthCheck(Builder builder) throws Exception {
builder.unknown().withDetail("routing", true);
}
}
}