/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.jdbc.orchestration.internal.datasource;

import com.google.common.eventbus.Subscribe;
import io.shardingsphere.core.event.ShardingEventBusInstance;
import io.shardingsphere.core.jdbc.adapter.AbstractDataSourceAdapter;
import io.shardingsphere.jdbc.orchestration.internal.OrchestrationFacade;
import io.shardingsphere.jdbc.orchestration.internal.event.state.CircuitStateEventBusEvent;
import lombok.AccessLevel;
import lombok.Getter;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Abstract orchestration data source.
 *
 * @author panjuan
 */
@Getter(AccessLevel.PROTECTED)
public abstract class AbstractOrchestrationDataSource extends AbstractDataSourceAdapter implements AutoCloseable {
    
    private final OrchestrationFacade orchestrationFacade;
    
    private final Map<String, DataSource> dataSourceMap;
    
    private boolean isCircuitBreak;
    
    public AbstractOrchestrationDataSource(final OrchestrationFacade orchestrationFacade, final Map<String, DataSource> dataSourceMap) throws SQLException {
        super(dataSourceMap.values());
        this.orchestrationFacade = orchestrationFacade;
        this.dataSourceMap = dataSourceMap;
        ShardingEventBusInstance.getInstance().register(this);
    }
    
    protected final Map<String, DataSource> getAvailableDataSourceMap(final Collection<String> disabledDataSourceNames) {
        Map<String, DataSource> result = new LinkedHashMap<>(dataSourceMap);
        for (String each : disabledDataSourceNames) {
            result.remove(each);
        }
        return result;
    }
    
    /**
     /**
     * Renew circuit breaker dataSource names.
     *
     * @param circuitStateEventBusEvent jdbc circuit event bus event
     */
    @Subscribe
    public void renew(final CircuitStateEventBusEvent circuitStateEventBusEvent) {
        isCircuitBreak = circuitStateEventBusEvent.isCircuitBreak();
    }
}

/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.jdbc.orchestration.internal.datasource;

import com.google.common.eventbus.Subscribe;
import io.shardingsphere.core.event.ShardingEventBusInstance;
import io.shardingsphere.core.jdbc.adapter.AbstractDataSourceAdapter;
import io.shardingsphere.jdbc.orchestration.internal.OrchestrationFacade;
import io.shardingsphere.jdbc.orchestration.internal.event.state.CircuitStateEventBusEvent;
import lombok.AccessLevel;
import lombok.Getter;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Abstract orchestration data source.
 *
 * @author panjuan
 */
@Getter(AccessLevel.PROTECTED)
public abstract class AbstractOrchestrationDataSource extends AbstractDataSourceAdapter implements AutoCloseable {
    
    private final OrchestrationFacade orchestrationFacade;
    
    private final Map<String, DataSource> dataSourceMap;
    
    private boolean isCircuitBreak;
    
    public AbstractOrchestrationDataSource(final OrchestrationFacade orchestrationFacade, final Map<String, DataSource> dataSourceMap) throws SQLException {
        super(dataSourceMap.values());
        this.orchestrationFacade = orchestrationFacade;
        this.dataSourceMap = dataSourceMap;
        ShardingEventBusInstance.getInstance().register(this);
    }
    
    public AbstractOrchestrationDataSource(final OrchestrationFacade orchestrationFacade) throws SQLException {
        super(orchestrationFacade.getConfigService().loadDataSourceMap().values());
        this.orchestrationFacade = orchestrationFacade;
        this.dataSourceMap = orchestrationFacade.getConfigService().loadDataSourceMap();
        ShardingEventBusInstance.getInstance().register(this);
    }
    
    protected final Map<String, DataSource> getAvailableDataSourceMap(final Collection<String> disabledDataSourceNames) {
        Map<String, DataSource> result = new LinkedHashMap<>(dataSourceMap);
        for (String each : disabledDataSourceNames) {
            result.remove(each);
        }
        return result;
    }
    
    /**
     /**
     * Renew circuit breaker dataSource names.
     *
     * @param circuitStateEventBusEvent jdbc circuit event bus event
     */
    @Subscribe
    public void renew(final CircuitStateEventBusEvent circuitStateEventBusEvent) {
        isCircuitBreak = circuitStateEventBusEvent.isCircuitBreak();
    }
}

modify AbstractOrchestrationDataSource()