starocean999 commented on code in PR #50695: URL: https://github.com/apache/doris/pull/50695#discussion_r2110670586
########## fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowTransactionCommand.java: ########## @@ -0,0 +1,180 @@ +// 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.DatabaseIf; +import org.apache.doris.catalog.Env; +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.TransProcDir; +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.Like; +import org.apache.doris.nereids.trees.expressions.literal.IntegerLikeLiteral; +import org.apache.doris.nereids.trees.expressions.literal.StringLikeLiteral; +import org.apache.doris.nereids.trees.expressions.literal.StringLiteral; +import org.apache.doris.nereids.trees.plans.PlanType; +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 org.apache.doris.transaction.GlobalTransactionMgrIface; +import org.apache.doris.transaction.TransactionStatus; + +import com.google.common.base.Strings; + +/** + * ShowTransactionCommand + */ +public class ShowTransactionCommand extends ShowCommand { + + private String dbName; + private Expression expr; + private long txnId = -1; + private String label = ""; + private TransactionStatus status = TransactionStatus.UNKNOWN; + private boolean labelMatch = false; + + public ShowTransactionCommand(String dbName, Expression whereClause) { + super(PlanType.SHOW_TRANSACTION_COMMAND); + this.dbName = dbName; + this.expr = whereClause; + } + + public String getDbName() { + return dbName; + } + + public long getTxnId() { + return txnId; + } + + public String getLabel() { + return label; + } + + @Override + public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { + validate(ctx); + return handleShowTransaction(ctx); + } + + private ShowResultSet handleShowTransaction(ConnectContext ctx) throws AnalysisException { + DatabaseIf db = ctx.getEnv().getInternalCatalog().getDbOrAnalysisException(dbName); + GlobalTransactionMgrIface transactionMgr = Env.getCurrentGlobalTransactionMgr(); + ShowResultSet resultSet; + if (status != TransactionStatus.UNKNOWN) { + resultSet = new ShowResultSet(getMetaData(), transactionMgr.getDbTransInfoByStatus(db.getId(), status)); + } else if (labelMatch && !label.isEmpty()) { + resultSet = new ShowResultSet(getMetaData(), transactionMgr.getDbTransInfoByLabelMatch(db.getId(), label)); + } else { + if (!label.isEmpty()) { + txnId = transactionMgr.getTransactionId(db.getId(), label); + if (txnId == -1) { + throw new AnalysisException("transaction with label " + label + " does not exist"); + } + } + resultSet = new ShowResultSet(getMetaData(), transactionMgr.getSingleTranInfo(db.getId(), txnId)); + } + return resultSet; + } + + /** + * 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, + PrivPredicate.ADMIN.getPrivs().toString()); + } + + if (Strings.isNullOrEmpty(dbName)) { + dbName = ctx.getDatabase(); + if (Strings.isNullOrEmpty(dbName)) { + ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR); + } + } + + if (expr == null) { + throw new AnalysisException("Missing transaction id"); + } + + if (!analyzeWhereClause()) { + throw new AnalysisException("Where clause should looks like one of them: id = 123 or label =/like 'label' " + + "or status = 'prepare/precommitted/committed/visible/aborted'"); + } + } + + private boolean analyzeWhereClause() throws AnalysisException { + if (!(expr instanceof EqualTo || expr instanceof Like)) { + return false; + } + + if (!(expr.child(0) instanceof UnboundSlot)) { + return false; + } + + String leftKey = ((UnboundSlot) expr.child(0)).getName(); + Expression right = expr.child(1); + if (leftKey.equalsIgnoreCase("id") && (right instanceof IntegerLikeLiteral)) { + txnId = ((IntegerLikeLiteral) right).getLongValue(); + } else if (leftKey.equalsIgnoreCase("label") && (right instanceof StringLikeLiteral)) { + label = ((StringLikeLiteral) right).getStringValue(); + } else if (leftKey.equalsIgnoreCase("status") && (right instanceof StringLiteral)) { + String txnStatus = ((StringLiteral) right).getStringValue(); + try { + status = TransactionStatus.valueOf(txnStatus.toUpperCase()); + } catch (Exception e) { + throw new AnalysisException("status should be prepare/precommitted/committed/visible/aborted"); + } + if (status == TransactionStatus.UNKNOWN) { + throw new AnalysisException("status should be prepare/precommitted/committed/visible/aborted"); + } + } else { + return false; + } + + if (expr instanceof Like && leftKey.equalsIgnoreCase("label")) { + //Only supports label like matching + labelMatch = true; + label = label.replaceAll("%", ".*"); + } + + return true; + } + + @Override + public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { + return visitor.visitShowTransactionCommand(this, context); + } + Review Comment: ``` @Override public RedirectStatus toRedirectStatus() { return RedirectStatus.FORWARD_NO_SYNC; } ``` -- This is an automated message from the Apache Git Service. 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