starocean999 commented on code in PR #49426: URL: https://github.com/apache/doris/pull/49426#discussion_r2011206863
########## fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowTabletsFromTableCommand.java: ########## @@ -0,0 +1,283 @@ +// 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.doris.nereids.trees.plans.commands; + +import org.apache.doris.catalog.Column; +import org.apache.doris.catalog.Database; +import org.apache.doris.catalog.Env; +import org.apache.doris.catalog.MaterializedIndex; +import org.apache.doris.catalog.MaterializedIndex.IndexExtState; +import org.apache.doris.catalog.OlapTable; +import org.apache.doris.catalog.Partition; +import org.apache.doris.catalog.Replica; +import org.apache.doris.catalog.ScalarType; +import org.apache.doris.common.AnalysisException; +import org.apache.doris.common.ErrorCode; +import org.apache.doris.common.ErrorReport; +import org.apache.doris.common.proc.TabletsProcDir; +import org.apache.doris.common.util.ListComparator; +import org.apache.doris.common.util.OrderByPair; +import org.apache.doris.common.util.Util; +import org.apache.doris.mysql.privilege.PrivPredicate; +import org.apache.doris.nereids.analyzer.UnboundSlot; +import org.apache.doris.nereids.properties.OrderKey; +import org.apache.doris.nereids.trees.expressions.ComparisonPredicate; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.Slot; +import org.apache.doris.nereids.trees.expressions.literal.IntegerLikeLiteral; +import org.apache.doris.nereids.trees.expressions.literal.Literal; +import org.apache.doris.nereids.trees.expressions.literal.StringLikeLiteral; +import org.apache.doris.nereids.trees.expressions.visitor.DefaultExpressionVisitor; +import org.apache.doris.nereids.trees.plans.PlanType; +import org.apache.doris.nereids.trees.plans.commands.info.PartitionNamesInfo; +import org.apache.doris.nereids.trees.plans.commands.info.TableNameInfo; +import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor; +import org.apache.doris.qe.ConnectContext; +import org.apache.doris.qe.ShowResultSet; +import org.apache.doris.qe.ShowResultSetMetaData; +import org.apache.doris.qe.StmtExecutor; + +import com.google.common.collect.Lists; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.List; +import java.util.Locale; + +/** + * ShowTabletsFromTableCommand + */ +public class ShowTabletsFromTableCommand extends ShowCommand { + private TableNameInfo dbTableName; + private PartitionNamesInfo partitionNames; + private Expression whereClause; + private List<OrderKey> orderKeys; + private long limit = 0; + private long offset = 0; + + private long version; + private long backendId; + private Replica.ReplicaState replicaState; + private ArrayList<OrderByPair> orderByPairs; + + /** + * ShowTabletsFromTableCommand + */ + public ShowTabletsFromTableCommand(TableNameInfo dbTableNameInfo, PartitionNamesInfo partitionNames, + Expression whereClause, List<OrderKey> orderKeys, long limit, long offset) { + super(PlanType.SHOW_TABLETS); + this.dbTableName = dbTableNameInfo; + this.partitionNames = partitionNames; + this.whereClause = whereClause; + this.orderKeys = orderKeys; + this.limit = limit; + this.offset = offset; + + this.version = -1; + this.backendId = -1; + this.replicaState = null; + this.orderByPairs = null; + } + + /** + * validate + */ + public void validate(ConnectContext ctx) throws AnalysisException { + // check access first + if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), PrivPredicate.ADMIN)) { + ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "SHOW TABLET"); + } + + dbTableName.analyze(ctx); + Util.prohibitExternalCatalog(dbTableName.getCtl(), this.getClass().getSimpleName()); + + if (partitionNames != null) { + partitionNames.validate(); + } + + if (whereClause != null) { + boolean valid = whereClause.accept(new DefaultExpressionVisitor<Boolean, Void>() { + @Override + public Boolean visitComparisonPredicate(ComparisonPredicate cp, Void context) { + if (cp.left() instanceof UnboundSlot && cp.right() instanceof Literal) { + String name = ((UnboundSlot) cp.left()).toSlot().getName().toLowerCase(Locale.ROOT); + if (name.equals("version")) { + if (cp.right() instanceof IntegerLikeLiteral) { + version = ((IntegerLikeLiteral) cp.right()).getLongValue(); + return true; + } + } else if (name.equals("backendid")) { + if (cp.right() instanceof IntegerLikeLiteral) { + backendId = ((IntegerLikeLiteral) cp.right()).getLongValue(); + return true; + } + } else if (name.equals("state")) { + if (cp.right() instanceof StringLikeLiteral) { + String state = ((StringLikeLiteral) cp.right()).getValue(); + try { + replicaState = Replica.ReplicaState.valueOf(state); + } catch (Exception e) { + return false; + } + return true; + } + } + } + return false; + } + + @Override + public Boolean visit(Expression expr, Void context) { + for (Expression child : expr.children()) { + if (!child.accept(this, context)) { + return false; + } + } + return true; + } + }, null); + + if (!valid) { + throw new AnalysisException("Where clause should looks like: Version = \"version\"," + + " or state = \"NORMAL|ROLLUP|CLONE|DECOMMISSION\", or BackendId = 10000" + + " or compound predicate with operator AND"); + } + } + + // order by + if (orderKeys != null && !orderKeys.isEmpty()) { + orderByPairs = new ArrayList<>(); + for (OrderKey orderKey : orderKeys) { + if (!(orderKey.getExpr() instanceof Slot)) { + throw new AnalysisException("Should order by column"); + } + Slot slot = (Slot) orderKey.getExpr(); + int index = analyzeColumn(slot.getName()); + OrderByPair orderByPair = new OrderByPair(index, !orderKey.isAsc()); + orderByPairs.add(orderByPair); + } + } + } + + private int analyzeColumn(String columnName) throws AnalysisException { + List<Column> titles = getMetaData().getColumns(); + for (Column title : titles) { + if (title.getName().equalsIgnoreCase(columnName)) { + return titles.indexOf(title); + } + } + + throw new AnalysisException("Title name[" + columnName + "] does not exist"); + } + + @Override + public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { + validate(ctx); + List<List<String>> rows = Lists.newArrayList(); + Env env = Env.getCurrentEnv(); + Database db = env.getInternalCatalog().getDbOrAnalysisException(dbTableName.getDb()); + OlapTable olapTable = db.getOlapTableOrAnalysisException(dbTableName.getTbl()); + olapTable.readLock(); + try { + long sizeLimit = -1; + if (offset > 0 && limit > 0) { + sizeLimit = offset + limit; + } else if (limit > 0) { + sizeLimit = limit; + } + boolean stop = false; + Collection<Partition> partitions = new ArrayList<Partition>(); + if (partitionNames != null) { + List<String> paNames = partitionNames.getPartitionNames(); + if (!paNames.isEmpty()) { + for (String partName : partitionNames.getPartitionNames()) { + Partition partition = olapTable.getPartition(partName, partitionNames.isTemp()); + if (partition == null) { + throw new AnalysisException("Unknown partition: " + partName); + } + partitions.add(partition); + } + } + } else { + partitions = olapTable.getPartitions(); + } + List<List<Comparable>> tabletInfos = new ArrayList<>(); + for (Partition partition : partitions) { + if (stop) { + break; + } + for (MaterializedIndex index : partition.getMaterializedIndices(IndexExtState.ALL)) { + TabletsProcDir procDir = new TabletsProcDir(olapTable, index); + tabletInfos.addAll(procDir.fetchComparableResult( + version, backendId, replicaState)); + if (sizeLimit > -1 && tabletInfos.size() >= sizeLimit) { + stop = true; + break; + } + } + } + if (offset >= tabletInfos.size()) { + tabletInfos.clear(); + } else { + // order by + ListComparator<List<Comparable>> comparator = null; + if (orderByPairs != null) { + OrderByPair[] orderByPairArr = new OrderByPair[orderByPairs.size()]; + comparator = new ListComparator<>(orderByPairs.toArray(orderByPairArr)); + } else { + // order by tabletId, replicaId + comparator = new ListComparator<>(0, 1); + } + Collections.sort(tabletInfos, comparator); + if (sizeLimit > -1) { + tabletInfos = tabletInfos.subList((int) offset, + Math.min((int) sizeLimit, tabletInfos.size())); + } + + for (List<Comparable> tabletInfo : tabletInfos) { + List<String> oneTablet = new ArrayList<String>(tabletInfo.size()); + for (Comparable column : tabletInfo) { + oneTablet.add(column.toString()); + } + rows.add(oneTablet); + } + } + } finally { + olapTable.readUnlock(); + } + + return new ShowResultSet(getMetaData(), rows); + } + Review Comment: need override toRedirectStatus -- This is an automated message from the Apache Git Service. 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