/*
* 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.connector.system;
import com.facebook.presto.annotation.UsedByGeneratedCode;
import com.facebook.presto.execution.QueryManager;
import com.facebook.presto.spi.QueryId;
import com.facebook.presto.spi.procedure.Procedure;
import com.facebook.presto.spi.procedure.Procedure.Argument;
import com.google.common.collect.ImmutableList;
import javax.inject.Inject;
import java.lang.invoke.MethodHandle;
import static com.facebook.presto.spi.type.StandardTypes.VARCHAR;
import static com.facebook.presto.util.Reflection.methodHandle;
import static java.util.Objects.requireNonNull;
public class KillQueryProcedure
{
private static final MethodHandle KILL_QUERY = methodHandle(KillQueryProcedure.class, "killQuery", String.class);
private final QueryManager queryManager;
@Inject
public KillQueryProcedure(QueryManager queryManager)
{
this.queryManager = requireNonNull(queryManager, "queryManager is null");
}
@UsedByGeneratedCode
public void killQuery(String queryId)
{
queryManager.cancelQuery(new QueryId(queryId));
}
public Procedure getProcedure()
{
return new Procedure(
"runtime",
"kill_query",
ImmutableList.of(new Argument("query_id", VARCHAR)),
KILL_QUERY.bindTo(this));
}
}