| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.iotdb.db.queryengine.execution.operator.source; |
| |
| import org.apache.iotdb.db.queryengine.common.header.DatasetHeaderFactory; |
| import org.apache.iotdb.db.queryengine.execution.operator.OperatorContext; |
| import org.apache.iotdb.db.queryengine.plan.Coordinator; |
| import org.apache.iotdb.db.queryengine.plan.execution.IQueryExecution; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId; |
| import org.apache.iotdb.db.utils.TimestampPrecisionUtils; |
| import org.apache.iotdb.tsfile.common.conf.TSFileDescriptor; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.read.common.block.TsBlock; |
| import org.apache.iotdb.tsfile.read.common.block.TsBlockBuilder; |
| import org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder; |
| import org.apache.iotdb.tsfile.read.common.block.column.TimeColumnBuilder; |
| import org.apache.iotdb.tsfile.utils.BytesUtils; |
| |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| public class ShowQueriesOperator implements SourceOperator { |
| |
| private final OperatorContext operatorContext; |
| |
| private final PlanNodeId sourceId; |
| |
| private TsBlock tsBlock; |
| private boolean hasConsumed; |
| |
| private final Coordinator coordinator; |
| |
| private static final int DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES = |
| TSFileDescriptor.getInstance().getConfig().getMaxTsBlockSizeInBytes(); |
| |
| public ShowQueriesOperator( |
| OperatorContext operatorContext, PlanNodeId sourceId, Coordinator coordinator) { |
| this.operatorContext = operatorContext; |
| this.sourceId = sourceId; |
| this.coordinator = coordinator; |
| } |
| |
| @Override |
| public OperatorContext getOperatorContext() { |
| return operatorContext; |
| } |
| |
| @Override |
| public TsBlock next() throws Exception { |
| TsBlock res = tsBlock; |
| hasConsumed = true; |
| tsBlock = null; |
| return res; |
| } |
| |
| @Override |
| public boolean hasNext() throws Exception { |
| if (hasConsumed) { |
| return false; |
| } |
| if (tsBlock == null) { |
| tsBlock = buildTsBlock(); |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isFinished() throws Exception { |
| return hasConsumed; |
| } |
| |
| @Override |
| public void close() throws Exception { |
| // do nothing |
| } |
| |
| @Override |
| public long calculateMaxPeekMemory() { |
| return DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES; |
| } |
| |
| @Override |
| public long calculateMaxReturnSize() { |
| return DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES; |
| } |
| |
| @Override |
| public long calculateRetainedSizeAfterCallingNext() { |
| return 0L; |
| } |
| |
| @Override |
| public PlanNodeId getSourceId() { |
| return sourceId; |
| } |
| |
| private TsBlock buildTsBlock() { |
| List<TSDataType> outputDataTypes = |
| DatasetHeaderFactory.getShowQueriesHeader().getRespDataTypes(); |
| TsBlockBuilder builder = new TsBlockBuilder(outputDataTypes); |
| List<IQueryExecution> queryExecutions = coordinator.getAllQueryExecutions(); |
| |
| if (!queryExecutions.isEmpty()) { |
| TimeColumnBuilder timeColumnBuilder = builder.getTimeColumnBuilder(); |
| ColumnBuilder[] columnBuilders = builder.getValueColumnBuilders(); |
| long currTime = System.currentTimeMillis(); |
| String[] splits = queryExecutions.get(0).getQueryId().split("_"); |
| int dataNodeId = Integer.parseInt(splits[splits.length - 1]); |
| |
| for (IQueryExecution queryExecution : queryExecutions) { |
| timeColumnBuilder.writeLong( |
| TimestampPrecisionUtils.convertToCurrPrecision( |
| queryExecution.getStartExecutionTime(), TimeUnit.MILLISECONDS)); |
| columnBuilders[0].writeBinary(BytesUtils.valueOf(queryExecution.getQueryId())); |
| columnBuilders[1].writeInt(dataNodeId); |
| columnBuilders[2].writeFloat( |
| (float) (currTime - queryExecution.getStartExecutionTime()) / 1000); |
| columnBuilders[3].writeBinary( |
| BytesUtils.valueOf(queryExecution.getExecuteSQL().orElse("UNKNOWN"))); |
| builder.declarePosition(); |
| } |
| } |
| return builder.build(); |
| } |
| } |