vitess.io/vitess@v0.16.2/go/vt/tableacl/role.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package tableacl
    18  
    19  import (
    20  	"strings"
    21  )
    22  
    23  // Role defines the level of access on a table
    24  type Role int
    25  
    26  const (
    27  	// READER can run SELECT statements
    28  	READER Role = iota
    29  	// WRITER can run SELECT, INSERT & UPDATE statements
    30  	WRITER
    31  	// ADMIN can run any statements including DDLs
    32  	ADMIN
    33  	// NumRoles is number of Roles defined
    34  	NumRoles
    35  )
    36  
    37  var roleNames = []string{
    38  	"READER",
    39  	"WRITER",
    40  	"ADMIN",
    41  }
    42  
    43  // Name returns the name of a role
    44  func (r Role) Name() string {
    45  	if r < READER || r > ADMIN {
    46  		return ""
    47  	}
    48  	return roleNames[r]
    49  }
    50  
    51  // RoleByName returns the Role corresponding to a name
    52  func RoleByName(s string) (Role, bool) {
    53  	for i, v := range roleNames {
    54  		if v == strings.ToUpper(s) {
    55  			return Role(i), true
    56  		}
    57  	}
    58  	return NumRoles, false
    59  }