ShowRolesCommand Class Reference

#include <DdlCommandExecutor.h>

Inheritance diagram for ShowRolesCommand:

Collaboration diagram for ShowRolesCommand:

Public Member Functions
	ShowRolesCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)
ExecutionResult	execute (bool read_only_mode) override
Public Member Functions inherited from DdlCommand
	DdlCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)

Additional Inherited Members
Protected Attributes inherited from DdlCommand
const DdlCommandData &	ddl_data_
std::shared_ptr < Catalog_Namespace::SessionInfo const >	session_ptr_

Detailed Description

Definition at line 346 of file DdlCommandExecutor.h.

Constructor & Destructor Documentation

ShowRolesCommand::ShowRolesCommand	(	const DdlCommandData &	ddl_data,
		std::shared_ptr< Catalog_Namespace::SessionInfo const >	session_ptr
	)

Definition at line 3548 of file DdlCommandExecutor.cpp.

References CHECK, and anonymous_namespace{DdlCommandExecutor.cpp}::extractPayload().

    : DdlCommand(ddl_data, session_ptr) {
  auto& ddl_payload = extractPayload(ddl_data);
  CHECK(ddl_payload["userName"].IsString());
  CHECK(ddl_payload["effective"].IsBool());
}

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Member Function Documentation

ExecutionResult ShowRolesCommand::execute ( bool  read_only_mode )

overridevirtual

Executes the DDL command corresponding to provided JSON payload.

Parameters

_return

result of DDL command execution (if applicable)

Implements DdlCommand.

Definition at line 3557 of file DdlCommandExecutor.cpp.

References ResultSetLogicalValuesBuilder::create(), DdlCommand::ddl_data_, anonymous_namespace{DdlCommandExecutor.cpp}::extractPayload(), genLiteralStr(), legacylockmgr::getExecuteReadLock(), Catalog_Namespace::SysCatalog::instance(), Catalog_Namespace::UserMetadata::isSuper, kTEXT, DdlCommand::session_ptr_, and Catalog_Namespace::UserMetadata::userId.

Referenced by heavydb.cursor.Cursor::executemany().

                                                             {
  auto execute_read_lock = legacylockmgr::getExecuteReadLock();

  // valid in read_only_mode

  auto& ddl_payload = extractPayload(ddl_data_);
  auto& sys_cat = Catalog_Namespace::SysCatalog::instance();

  // label_infos -> column labels
  std::vector<TargetMetaInfo> label_infos;
  std::vector<std::string> labels{"ROLES"};
  label_infos.emplace_back(labels[0], SQLTypeInfo(kTEXT, true));

  // logical_values -> table data
  std::vector<RelLogicalValues::RowValues> logical_values;
  std::vector<std::string> roles_list;
  Catalog_Namespace::UserMetadata self = session_ptr_->get_currentUser();
  std::string user_name = ddl_payload["userName"].GetString();
  bool effective = ddl_payload["effective"].GetBool();
  if (user_name.empty()) {
    user_name = self.userName;
  }
  Catalog_Namespace::UserMetadata user;
  bool is_user = sys_cat.getMetadataForUser(user_name, user);
  if (!self.isSuper) {
    if (is_user) {
      if (self.userId != user.userId) {
        throw std::runtime_error(
            "Only a superuser is authorized to request list of roles granted to another "
            "user.");
      }
    } else {
      if (!sys_cat.isRoleGrantedToGrantee(
              self.userName, user_name, /*only_direct=*/false)) {
        throw std::runtime_error(
            "Only a superuser is authorized to request list of roles granted to a role "
            "they don't have.");
      }
    }
  }
  if (user.isSuper) {
    auto s = sys_cat.getCreatedRoles();
    roles_list.insert(roles_list.end(), s.begin(), s.end());
  } else {
    roles_list = sys_cat.getRoles(user_name, effective);
  }
  for (const std::string& role_name : roles_list) {
    logical_values.emplace_back(RelLogicalValues::RowValues{});
    logical_values.back().emplace_back(genLiteralStr(role_name));
  }

  // Create ResultSet
  std::shared_ptr<ResultSet> rSet = std::shared_ptr<ResultSet>(
      ResultSetLogicalValuesBuilder::create(label_infos, logical_values));

  return ExecutionResult(rSet, label_infos);
}

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The documentation for this class was generated from the following files:

• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.h
• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.cpp