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The following commit(s) were added to refs/heads/master by this push:
     new 578a94012a2 [Enhancement] (nereids)implement DropRoleCommand in 
nereids (#43231)
578a94012a2 is described below

commit 578a94012a211df3f678ea99836b15fd2d24f7e4
Author: Vallish Pai <vallish...@gmail.com>
AuthorDate: Fri Nov 15 11:51:42 2024 +0530

    [Enhancement] (nereids)implement DropRoleCommand in nereids (#43231)
    
    Issue Number: close #42618
---
 .../antlr4/org/apache/doris/nereids/DorisParser.g4 |  6 +-
 .../org/apache/doris/mysql/privilege/Auth.java     |  4 ++
 .../doris/nereids/parser/LogicalPlanBuilder.java   |  6 ++
 .../apache/doris/nereids/trees/plans/PlanType.java |  1 +
 .../nereids/trees/plans/commands/DropCommand.java  | 45 ++++++++++++++
 .../trees/plans/commands/DropRoleCommand.java      | 69 ++++++++++++++++++++++
 .../trees/plans/visitor/CommandVisitor.java        |  5 ++
 .../nereids_p0/ddl/alter/test_nereids_role.groovy  | 11 ++--
 8 files changed, 139 insertions(+), 8 deletions(-)

diff --git a/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4 
b/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
index 68ca15cca7b..e16af4330aa 100644
--- a/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
+++ b/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
@@ -60,6 +60,8 @@ statementBase
     | supportedRecoverStatement         #supportedRecoverStatementAlias
     ;
 
+
+
 unsupportedStatement
     : unsupportedUseStatement
     | unsupportedDmlStatement
@@ -189,7 +191,8 @@ supportedAlterStatement
     ;
 
 supportedDropStatement
-    : DROP CATALOG RECYCLE BIN WHERE idType=STRING_LITERAL EQ id=INTEGER_VALUE 
#dropCatalogRecycleBin
+    : DROP CATALOG RECYCLE BIN WHERE idType=STRING_LITERAL EQ id=INTEGER_VALUE 
 #dropCatalogRecycleBin
+    | DROP ROLE (IF EXISTS)? name=identifier                                   
 #dropRole
     ;
 
 supportedShowStatement
@@ -661,7 +664,6 @@ unsupportedDropStatement
     | DROP USER (IF EXISTS)? userIdentify                                      
 #dropUser
     | DROP VIEW (IF EXISTS)? name=multipartIdentifier                          
 #dropView
     | DROP REPOSITORY name=identifier                                          
 #dropRepository
-    | DROP ROLE (IF EXISTS)? name=identifier                                   
 #dropRole
     | DROP FILE name=STRING_LITERAL
         ((FROM | IN) database=identifier)? properties=propertyClause           
 #dropFile
     | DROP INDEX (IF EXISTS)? name=identifier ON tableName=multipartIdentifier 
 #dropIndex
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/Auth.java 
b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/Auth.java
index 3c7ea1376f6..77a2d791bb1 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/Auth.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/Auth.java
@@ -1078,6 +1078,10 @@ public class Auth implements Writable {
         dropRoleInternal(stmt.getRole(), stmt.isSetIfExists(), false);
     }
 
+    public void dropRole(String role, boolean ignoreIfNonExists) throws 
DdlException {
+        dropRoleInternal(role, ignoreIfNonExists, false);
+    }
+
     public void replayDropRole(PrivInfo info) {
         try {
             dropRoleInternal(info.getRole(), false, true);
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
index 5060dc3f915..e4cd01ceee0 100644
--- 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
@@ -100,6 +100,7 @@ import 
org.apache.doris.nereids.DorisParser.DropCatalogRecycleBinContext;
 import org.apache.doris.nereids.DorisParser.DropConstraintContext;
 import org.apache.doris.nereids.DorisParser.DropMTMVContext;
 import org.apache.doris.nereids.DorisParser.DropProcedureContext;
+import org.apache.doris.nereids.DorisParser.DropRoleContext;
 import org.apache.doris.nereids.DorisParser.ElementAtContext;
 import org.apache.doris.nereids.DorisParser.ExceptContext;
 import org.apache.doris.nereids.DorisParser.ExceptOrReplaceContext;
@@ -418,6 +419,7 @@ import 
org.apache.doris.nereids.trees.plans.commands.DropCatalogRecycleBinComman
 import org.apache.doris.nereids.trees.plans.commands.DropConstraintCommand;
 import org.apache.doris.nereids.trees.plans.commands.DropMTMVCommand;
 import org.apache.doris.nereids.trees.plans.commands.DropProcedureCommand;
+import org.apache.doris.nereids.trees.plans.commands.DropRoleCommand;
 import org.apache.doris.nereids.trees.plans.commands.ExplainCommand;
 import 
org.apache.doris.nereids.trees.plans.commands.ExplainCommand.ExplainLevel;
 import org.apache.doris.nereids.trees.plans.commands.ExportCommand;
@@ -4107,4 +4109,8 @@ public class LogicalPlanBuilder extends 
DorisParserBaseVisitor<Object> {
         String newDbName = (ctx.alias != null) ? ctx.alias.getText() : null;
         return new RecoverDatabaseCommand(dbName, dbId, newDbName);
     }
+
+    public LogicalPlan visitDropRole(DropRoleContext ctx) {
+        return new DropRoleCommand(ctx.name.getText(), ctx.EXISTS() != null);
+    }
 }
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PlanType.java 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PlanType.java
index cb1eff3eb62..d3b3c222107 100644
--- 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PlanType.java
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PlanType.java
@@ -158,6 +158,7 @@ public enum PlanType {
     CALL_COMMAND,
     CREATE_PROCEDURE_COMMAND,
     DROP_PROCEDURE_COMMAND,
+    DROP_ROLE_COMMAND,
     SHOW_PROCEDURE_COMMAND,
     SHOW_CREATE_PROCEDURE_COMMAND,
     CREATE_VIEW_COMMAND,
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropCommand.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropCommand.java
new file mode 100644
index 00000000000..d08564a8d32
--- /dev/null
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropCommand.java
@@ -0,0 +1,45 @@
+// 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.analysis.StmtType;
+import org.apache.doris.nereids.trees.plans.PlanType;
+import org.apache.doris.qe.ConnectContext;
+import org.apache.doris.qe.StmtExecutor;
+
+/**
+ * base class for all drop commands
+ */
+public abstract class DropCommand extends Command implements ForwardWithSync {
+    public DropCommand(PlanType type) {
+        super(type);
+    }
+
+    @Override
+    public StmtType stmtType() {
+        return StmtType.DROP;
+    }
+
+    @Override
+    public void run(ConnectContext ctx, StmtExecutor executor) throws 
Exception {
+        doRun(ctx, executor);
+    }
+
+    public abstract void doRun(ConnectContext ctx, StmtExecutor executor) 
throws Exception;
+
+}
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropRoleCommand.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropRoleCommand.java
new file mode 100644
index 00000000000..2f7858aa6ae
--- /dev/null
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/DropRoleCommand.java
@@ -0,0 +1,69 @@
+// 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.Env;
+import org.apache.doris.common.AnalysisException;
+import org.apache.doris.common.Config;
+import org.apache.doris.common.ErrorCode;
+import org.apache.doris.common.ErrorReport;
+import org.apache.doris.common.FeNameFormat;
+import org.apache.doris.mysql.privilege.PrivPredicate;
+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.StmtExecutor;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+/**
+ * drop roles command
+ */
+public class DropRoleCommand extends DropCommand {
+    public static final Logger LOG = 
LogManager.getLogger(DropRoleCommand.class);
+    private final boolean ifExists;
+    private final String role;
+
+    /**
+     * constructor
+     */
+    public DropRoleCommand(String role, boolean ifExists) {
+        super(PlanType.DROP_ROLE_COMMAND);
+        this.role = role;
+        this.ifExists = ifExists;
+    }
+
+    @Override
+    public void doRun(ConnectContext ctx, StmtExecutor executor) throws 
Exception {
+        if (Config.access_controller_type.equalsIgnoreCase("ranger-doris")) {
+            throw new AnalysisException("Drop role is prohibited when Ranger 
is enabled.");
+        }
+        FeNameFormat.checkRoleName(role, false /* can not be superuser */, 
"Can not drop role");
+        // check if current user has GRANT priv on GLOBAL level.
+        if 
(!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), 
PrivPredicate.GRANT)) {
+            
ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, 
"DROP ROLE");
+        }
+        Env.getCurrentEnv().getAuth().dropRole(role, ifExists);
+    }
+
+    @Override
+    public <R, C> R accept(PlanVisitor<R, C> visitor, C context) {
+        return visitor.visitDropRoleCommand(this, context);
+    }
+}
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/visitor/CommandVisitor.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/visitor/CommandVisitor.java
index 5b4cff7dade..e77c9f61380 100644
--- 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/visitor/CommandVisitor.java
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/visitor/CommandVisitor.java
@@ -37,6 +37,7 @@ import 
org.apache.doris.nereids.trees.plans.commands.DropCatalogRecycleBinComman
 import org.apache.doris.nereids.trees.plans.commands.DropConstraintCommand;
 import org.apache.doris.nereids.trees.plans.commands.DropMTMVCommand;
 import org.apache.doris.nereids.trees.plans.commands.DropProcedureCommand;
+import org.apache.doris.nereids.trees.plans.commands.DropRoleCommand;
 import org.apache.doris.nereids.trees.plans.commands.ExplainCommand;
 import org.apache.doris.nereids.trees.plans.commands.ExportCommand;
 import org.apache.doris.nereids.trees.plans.commands.LoadCommand;
@@ -278,4 +279,8 @@ public interface CommandVisitor<R, C> {
     default R visitRecoverDatabaseCommand(RecoverDatabaseCommand 
recoverDatabaseCommand, C context) {
         return visitCommand(recoverDatabaseCommand, context);
     }
+
+    default R visitDropRoleCommand(DropRoleCommand dropRoleCommand, C context) 
{
+        return visitCommand(dropRoleCommand, context);
+    }
 }
diff --git 
a/regression-test/suites/nereids_p0/ddl/alter/test_nereids_role.groovy 
b/regression-test/suites/nereids_p0/ddl/alter/test_nereids_role.groovy
index cb3d2f62ecd..e7ffedd3b4f 100644
--- a/regression-test/suites/nereids_p0/ddl/alter/test_nereids_role.groovy
+++ b/regression-test/suites/nereids_p0/ddl/alter/test_nereids_role.groovy
@@ -18,16 +18,15 @@
 import org.junit.Assert;
 
 suite("test_nereids_role", "account") {
-    def role= 'account_role_test'
-    def user = 'acount_role_user_test'
-    def dbName = 'account_role_test_db'
+    def role= 'nereids_account_role_test'
+    def user = 'nereids_acount_role_user_test'
+    def dbName = 'nereids_account_role_test_db'
     def pwd = 'C123_567p'
 
     try_sql("DROP ROLE ${role}")
     try_sql("DROP USER ${user}")
     sql """DROP DATABASE IF EXISTS ${dbName}"""
-    sql """CREATE DATABASE ${dbName}"""
-
+    sql """CREATE DATABASE IF NOT EXISTS ${dbName}"""
     sql """CREATE ROLE ${role}"""
     sql """GRANT SELECT_PRIV ON ${context.config.defaultDb} TO ROLE 
'${role}'"""
     sql """GRANT SELECT_PRIV ON ${dbName} TO ROLE '${role}'"""
@@ -59,7 +58,7 @@ suite("test_nereids_role", "account") {
     logger.info("roles_alter: " + roles_alter.toString())
     
assertTrue(roles_alter.toString().contains("account_p0_account_role_test_comment_alter"))
     // drop role
-    sql """DROP ROLE ${role}"""
+    checkNereidsExecute("""DROP ROLE ${role}""")
     def roles_drop = sql """show roles"""
     logger.info("roles_drop: " + roles_drop.toString())
     
assertFalse(roles_drop.toString().contains("account_p0_account_role_test_comment_alter"))


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