/*
* 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.execution.QueryInfo;
import com.facebook.presto.execution.QueryManager;
import com.facebook.presto.execution.QueryStats;
import com.facebook.presto.spi.ColumnType;
import com.facebook.presto.spi.InMemoryRecordSet;
import com.facebook.presto.spi.InMemoryRecordSet.Builder;
import com.facebook.presto.spi.RecordCursor;
import com.facebook.presto.spi.SchemaTableName;
import com.facebook.presto.spi.SystemTable;
import com.facebook.presto.spi.TableMetadata;
import com.google.common.collect.ImmutableList;
import io.airlift.node.NodeInfo;
import io.airlift.units.Duration;
import org.joda.time.DateTime;
import javax.inject.Inject;
import java.util.List;
import static com.facebook.presto.metadata.MetadataUtil.TableMetadataBuilder.tableMetadataBuilder;
import static com.facebook.presto.metadata.MetadataUtil.columnTypeGetter;
import static com.facebook.presto.spi.ColumnType.LONG;
import static com.facebook.presto.spi.ColumnType.STRING;
import static com.google.common.collect.Iterables.transform;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
public class QuerySystemTable
implements SystemTable
{
public static final SchemaTableName QUERY_TABLE_NAME = new SchemaTableName("sys", "query");
public static final TableMetadata QUERY_TABLE = tableMetadataBuilder(QUERY_TABLE_NAME)
.column("node_id", STRING)
.column("query_id", STRING)
.column("state", STRING)
.column("user", STRING)
.column("query", STRING)
.column("queued_time_ms", LONG)
.column("analysis_time_ms", LONG)
.column("distributed_planning_time_ms", LONG)
.column("created", LONG)
.column("started", LONG)
.column("last_heartbeat", LONG)
.column("end", LONG)
.build();
private final QueryManager queryManager;
private final String nodeId;
@Inject
public QuerySystemTable(QueryManager queryManager, NodeInfo nodeInfo)
{
this.queryManager = queryManager;
this.nodeId = nodeInfo.getNodeId();
}
@Override
public boolean isDistributed()
{
return true;
}
@Override
public TableMetadata getTableMetadata()
{
return QUERY_TABLE;
}
@Override
public List<ColumnType> getColumnTypes()
{
return ImmutableList.copyOf(transform(QUERY_TABLE.getColumns(), columnTypeGetter()));
}
@Override
public RecordCursor cursor()
{
Builder table = InMemoryRecordSet.builder(QUERY_TABLE);
for (QueryInfo queryInfo : queryManager.getAllQueryInfo()) {
QueryStats queryStats = queryInfo.getQueryStats();
table.addRow(
nodeId,
queryInfo.getQueryId().toString(),
queryInfo.getState().toString(),
queryInfo.getSession().getUser(),
queryInfo.getQuery(),
toMillis(queryStats.getQueuedTime()),
toMillis(queryStats.getAnalysisTime()),
toMillis(queryStats.getDistributedPlanningTime()),
toTimeStamp(queryStats.getCreateTime()),
toTimeStamp(queryStats.getExecutionStartTime()),
toTimeStamp(queryStats.getLastHeartbeat()),
toTimeStamp(queryStats.getEndTime()));
}
return table.build().cursor();
}
private Long toMillis(Duration duration)
{
if (duration == null) {
return null;
}
return duration.toMillis();
}
private Long toTimeStamp(DateTime dateTime)
{
if (dateTime == null) {
return null;
}
return MILLISECONDS.toSeconds(dateTime.getMillis());
}
}