QueryManager.java example

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presto-master
/*
 * 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 com.facebook.presto.execution;

import com.facebook.presto.server.SessionSupplier;
import com.facebook.presto.spi.QueryId;
import com.facebook.presto.spi.resourceGroups.ResourceGroupId;
import io.airlift.units.Duration;

import java.util.List;
import java.util.Optional;

public interface QueryManager
{
    List<QueryInfo> getAllQueryInfo();

    Duration waitForStateChange(QueryId queryId, QueryState currentState, Duration maxWait)
            throws InterruptedException;

    QueryInfo getQueryInfo(QueryId queryId);

    Optional<ResourceGroupId> getQueryResourceGroup(QueryId queryId);

    Optional<QueryState> getQueryState(QueryId queryId);

    void recordHeartbeat(QueryId queryId);

    QueryInfo createQuery(SessionSupplier sessionSupplier, String query);

    void cancelQuery(QueryId queryId);

    void cancelStage(StageId stageId);

    SqlQueryManagerStats getStats();
}