Set H2 storage startup right. (#2173)

package org.apache.skywalking.oap.server.storage.plugin.jdbc.h2;

import java.util.Properties;

import org.apache.skywalking.oap.server.core.storage.IBatchDAO;

import org.apache.skywalking.oap.server.core.storage.IHistoryDeleteDAO;

import org.apache.skywalking.oap.server.core.storage.IRegisterLockDAO;

import org.apache.skywalking.oap.server.core.storage.StorageDAO;

import org.apache.skywalking.oap.server.core.storage.StorageException;

import org.apache.skywalking.oap.server.core.storage.StorageModule;

import org.apache.skywalking.oap.server.core.storage.cache.IEndpointInventoryCacheDAO;

import org.apache.skywalking.oap.server.core.storage.cache.INetworkAddressInventoryCacheDAO;

import org.apache.skywalking.oap.server.core.storage.cache.IServiceInstanceInventoryCacheDAO;

import org.apache.skywalking.oap.server.core.storage.cache.IServiceInventoryCacheDAO;

import org.apache.skywalking.oap.server.core.storage.query.IAggregationQueryDAO;

import org.apache.skywalking.oap.server.core.storage.query.IAlarmQueryDAO;

import org.apache.skywalking.oap.server.core.storage.query.IMetadataQueryDAO;

import org.apache.skywalking.oap.server.core.storage.query.IMetricQueryDAO;

import org.apache.skywalking.oap.server.core.storage.query.ITopologyQueryDAO;

import org.apache.skywalking.oap.server.core.storage.query.ITraceQueryDAO;

import org.apache.skywalking.oap.server.core.CoreModule;

import org.apache.skywalking.oap.server.core.storage.*;

import org.apache.skywalking.oap.server.core.storage.cache.*;

import org.apache.skywalking.oap.server.core.storage.query.*;

import org.apache.skywalking.oap.server.library.client.jdbc.hikaricp.JDBCHikariCPClient;

import org.apache.skywalking.oap.server.library.module.ModuleConfig;

import org.apache.skywalking.oap.server.library.module.ModuleDefine;

import org.apache.skywalking.oap.server.library.module.ModuleProvider;

import org.apache.skywalking.oap.server.library.module.ModuleStartException;

import org.apache.skywalking.oap.server.library.module.ServiceNotProvidedException;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2AggregationQueryDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2AlarmQueryDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2BatchDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2EndpointInventoryCacheDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2HistoryDeleteDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2MetadataQueryDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2MetricQueryDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2NetworkAddressInventoryCacheDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2RegisterLockDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2ServiceInstanceInventoryCacheDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2ServiceInventoryCacheDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2StorageDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2TableInstaller;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2TopologyQueryDAO;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.H2TraceQueryDAO;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.apache.skywalking.oap.server.library.module.*;

import org.apache.skywalking.oap.server.storage.plugin.jdbc.h2.dao.*;

import org.slf4j.*;

/**

 * H2 Storage provider is for demonstration and preview only. I will find that haven't implemented several interfaces,

    }

    @Override public String[] requiredModules() {

        return new String[0];

        return new String[] {CoreModule.NAME};

    }

}