starocean999 commented on code in PR #50787: URL: https://github.com/apache/doris/pull/50787#discussion_r2106384895
########## fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowReplicaStatusCommand.java: ########## @@ -0,0 +1,220 @@ +// 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.Env; +import org.apache.doris.catalog.MetadataViewer; +import org.apache.doris.catalog.Replica.ReplicaStatus; +import org.apache.doris.catalog.ScalarType; +import org.apache.doris.common.AnalysisException; +import org.apache.doris.common.DdlException; +import org.apache.doris.common.ErrorCode; +import org.apache.doris.common.ErrorReport; +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.trees.expressions.EqualTo; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.Not; +import org.apache.doris.nereids.trees.expressions.literal.StringLiteral; +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.TableRefInfo; +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.ImmutableList; +import com.google.common.collect.Lists; + +import java.util.List; + +/** + * ShowReplicaStatusCommand + */ +public class ShowReplicaStatusCommand extends ShowCommand { + public static final ImmutableList<String> TITLE_NAMES = new ImmutableList.Builder<String>() + .add("TabletId").add("ReplicaId").add("BackendId").add("Version").add("LastFailedVersion") + .add("LastSuccessVersion").add("CommittedVersion").add("SchemaHash").add("VersionNum") + .add("IsBad").add("IsUserDrop").add("State").add("Status") + .build(); + + private final TableRefInfo tableRefInfo; + private Expression where; + private List<String> partitions = Lists.newArrayList(); + private ReplicaStatus statusFilter; + + public ShowReplicaStatusCommand(TableRefInfo tableRefInfo, Expression where) { + super(PlanType.SHOW_REPLICA_STATUS_COMMAND); + this.tableRefInfo = tableRefInfo; + this.where = where; + } + + @Override + public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { + validate(ctx); + return handleShowReplicaStatus(); + } + + /** + * validate + */ + public void validate(ConnectContext ctx) throws AnalysisException { + // check auth + if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), PrivPredicate.ADMIN)) { + ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "ADMIN"); + } + + tableRefInfo.getTableNameInfo().analyze(ctx); + Util.prohibitExternalCatalog(tableRefInfo.getTableNameInfo().getCtl(), this.getClass().getSimpleName()); + + PartitionNamesInfo partitionNamesInfo = tableRefInfo.getPartitionNamesInfo(); + if (partitionNamesInfo != null) { + if (partitionNamesInfo.isTemp()) { + throw new AnalysisException("Do not support showing replica status of temporary partitions"); + } + partitions.addAll(partitionNamesInfo.getPartitionNames()); + } + + if (!analyzeWhereClause()) { + throw new AnalysisException( + "Where clause should looks like: status =/!= 'OK/DEAD/VERSION_ERROR/SCHEMA_ERROR/MISSING'"); + } + } + + private boolean analyzeWhereClause() { + if (where == null) { + return true; + } + + if (!(where instanceof EqualTo || where instanceof Not)) { + return false; + } + + if (where instanceof Not) { + if (!(where.child(0) instanceof EqualTo)) { + return false; + } + } + + Expression leftExpr = null; + if (where instanceof EqualTo) { + leftExpr = where.child(0); + } else if (where instanceof Not) { + leftExpr = where.child(0).child(0); + } + + if (leftExpr == null) { + return false; + } + + if (!(leftExpr instanceof UnboundSlot)) { + return false; + } + + String leftKey = ((UnboundSlot) leftExpr).getName(); + if (!leftKey.equalsIgnoreCase("status")) { + return false; + } + + Expression rightExpr = null; + if (where instanceof EqualTo) { + rightExpr = where.child(1); + } else if (where instanceof Not) { + rightExpr = where.child(0).child(1); + } + + if (rightExpr == null) { + return false; + } + + if (!(rightExpr instanceof StringLiteral)) { + return false; + } + + try { + statusFilter = ReplicaStatus.valueOf(((StringLiteral) rightExpr).getStringValue().toUpperCase()); + } catch (Exception e) { + return false; + } + + if (statusFilter == null) { + return false; + } + + return true; + } + + public String getDbName() { + return tableRefInfo.getTableNameInfo().getDb(); + } + + public String getTblName() { + return tableRefInfo.getTableNameInfo().getTbl(); + } + + public List<String> getPartitions() { + return partitions; + } + + /** + * where expression is equal expression or not + */ + public boolean isEqual() { + if (where == null) { + return false; + } + + if (where instanceof EqualTo) { + return true; + } + + return false; + } + + public ReplicaStatus getStatusFilter() { + return statusFilter; + } + + private ShowResultSet handleShowReplicaStatus() throws AnalysisException { + List<List<String>> results; + try { + results = MetadataViewer.getTabletStatus(this); + } catch (DdlException e) { + throw new AnalysisException(e.getMessage()); + } + return new ShowResultSet(getMetaData(), results); + } + + @Override + public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { + return visitor.visitShowReplicaStatusCommand(this, context); + } + Review Comment: ``` @Override public RedirectStatus toRedirectStatus() { if (ConnectContext.get().getSessionVariable().getForwardToMaster()) { return RedirectStatus.FORWARD_NO_SYNC; } else { return RedirectStatus.NO_FORWARD; } } ``` -- This is an automated message from the Apache Git Service. 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