starocean999 commented on code in PR #44861: URL: https://github.com/apache/doris/pull/44861#discussion_r1866931892
########## fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/AdminShowReplicaStatusCommand.java: ########## @@ -0,0 +1,154 @@ +// 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; +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.UserException; +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.StringLikeLiteral; +import org.apache.doris.nereids.trees.plans.PlanType; +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 java.util.List; + +/** + * ShowReplicaStatusCommand + */ +public class AdminShowReplicaStatusCommand 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 TableRefInfo tableRefInfo; + private Expression where; + + private Replica.ReplicaStatus statusFilter; + + public AdminShowReplicaStatusCommand(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); + List<List<String>> results; + try { + results = MetadataViewer.getTabletStatus(tableRefInfo.getTableNameInfo().getDb(), + tableRefInfo.getTableNameInfo().getTbl(), + tableRefInfo.getPartitionNamesInfo().getPartitionNames(), statusFilter, where); + } catch (DdlException e) { + throw new AnalysisException(e.getMessage()); + } + return new ShowResultSet(getMetaData(), results); + } + + public ShowResultSetMetaData getMetaData() { + ShowResultSetMetaData.Builder builder = ShowResultSetMetaData.builder(); + for (String title : TITLE_NAMES) { + builder.addColumn(new Column(title, ScalarType.createVarchar(30))); + } + return builder.build(); + } + + /** + * validate for show replica + */ + public void validate(ConnectContext ctx) throws AnalysisException, UserException { + // check auth + if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), PrivPredicate.ADMIN)) { + ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "ADMIN"); + } + + // bind relation + tableRefInfo.analyze(ctx); + + if (!validateWhere()) { + throw new AnalysisException( + "Where clause should looks like: status =/!= 'OK/DEAD/VERSION_ERROR/SCHEMA_ERROR/MISSING'"); + } + } + + private boolean validateWhere() throws AnalysisException { + // analyze where clause if not null + if (where == null) { + return true; + } + + if (!(where instanceof EqualTo || (where instanceof Not && where.child(0) instanceof EqualTo))) { + return false; + } + + EqualTo equalTo = where instanceof EqualTo ? (EqualTo) where : (EqualTo) ((Not) where).child(); + + Expression leftChild = equalTo.child(0); + if (!(leftChild instanceof UnboundSlot)) { + return false; + } + + String leftKey = ((UnboundSlot) leftChild).getName(); + if (!leftKey.equalsIgnoreCase("status")) { + return false; + } + + Expression rightChild = equalTo.child(1); + if (!(rightChild instanceof StringLikeLiteral)) { + return false; + } + + try { + statusFilter = Replica.ReplicaStatus + .valueOf(((StringLikeLiteral) rightChild).getStringValue().toUpperCase()); + } catch (Exception e) { + return false; + } + + if (statusFilter == null) { + return false; + } + + return true; + } + + @Override + public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { + return visitor.visitAdminShowReplicaStatusCommand(this, context); + } +} Review Comment: override toRedirectStatus method as old planner: ``` @Override public RedirectStatus getRedirectStatus() { 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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