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auth.go
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auth.go
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// Copyright 2016 Nippon Telegraph and Telephone Corporation.
//
// Licensed 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 clientv3
import (
"fmt"
"strings"
"github.com/coreos/etcd/auth/authpb"
pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
"golang.org/x/net/context"
"google.golang.org/grpc"
)
type (
AuthEnableResponse pb.AuthEnableResponse
AuthUserAddResponse pb.AuthUserAddResponse
AuthUserDeleteResponse pb.AuthUserDeleteResponse
AuthUserChangePasswordResponse pb.AuthUserChangePasswordResponse
AuthUserGrantResponse pb.AuthUserGrantResponse
AuthRoleAddResponse pb.AuthRoleAddResponse
AuthRoleGrantResponse pb.AuthRoleGrantResponse
PermissionType authpb.Permission_Type
)
const (
PermRead = authpb.READ
PermWrite = authpb.WRITE
PermReadWrite = authpb.READWRITE
)
type Auth interface {
// AuthEnable enables auth of an etcd cluster.
AuthEnable(ctx context.Context) (*AuthEnableResponse, error)
// UserAdd adds a new user to an etcd cluster.
UserAdd(ctx context.Context, name string, password string) (*AuthUserAddResponse, error)
// UserDelete deletes a user from an etcd cluster.
UserDelete(ctx context.Context, name string) (*AuthUserDeleteResponse, error)
// UserChangePassword changes a password of a user.
UserChangePassword(ctx context.Context, name string, password string) (*AuthUserChangePasswordResponse, error)
// UserGrant grants a role to a user.
UserGrant(ctx context.Context, user string, role string) (*AuthUserGrantResponse, error)
// RoleAdd adds a new role to an etcd cluster.
RoleAdd(ctx context.Context, name string) (*AuthRoleAddResponse, error)
// RoleGrant grants a permission to a role.
RoleGrant(ctx context.Context, name string, key string, permType PermissionType) (*AuthRoleGrantResponse, error)
}
type auth struct {
c *Client
conn *grpc.ClientConn // conn in-use
remote pb.AuthClient
}
func NewAuth(c *Client) Auth {
conn := c.ActiveConnection()
return &auth{
conn: c.ActiveConnection(),
remote: pb.NewAuthClient(conn),
c: c,
}
}
func (auth *auth) AuthEnable(ctx context.Context) (*AuthEnableResponse, error) {
resp, err := auth.remote.AuthEnable(ctx, &pb.AuthEnableRequest{})
return (*AuthEnableResponse)(resp), err
}
func (auth *auth) UserAdd(ctx context.Context, name string, password string) (*AuthUserAddResponse, error) {
resp, err := auth.remote.UserAdd(ctx, &pb.AuthUserAddRequest{Name: name, Password: password})
return (*AuthUserAddResponse)(resp), err
}
func (auth *auth) UserDelete(ctx context.Context, name string) (*AuthUserDeleteResponse, error) {
resp, err := auth.remote.UserDelete(ctx, &pb.AuthUserDeleteRequest{Name: name})
return (*AuthUserDeleteResponse)(resp), err
}
func (auth *auth) UserChangePassword(ctx context.Context, name string, password string) (*AuthUserChangePasswordResponse, error) {
resp, err := auth.remote.UserChangePassword(ctx, &pb.AuthUserChangePasswordRequest{Name: name, Password: password})
return (*AuthUserChangePasswordResponse)(resp), err
}
func (auth *auth) UserGrant(ctx context.Context, user string, role string) (*AuthUserGrantResponse, error) {
resp, err := auth.remote.UserGrant(ctx, &pb.AuthUserGrantRequest{User: user, Role: role})
return (*AuthUserGrantResponse)(resp), err
}
func (auth *auth) RoleAdd(ctx context.Context, name string) (*AuthRoleAddResponse, error) {
resp, err := auth.remote.RoleAdd(ctx, &pb.AuthRoleAddRequest{Name: name})
return (*AuthRoleAddResponse)(resp), err
}
func (auth *auth) RoleGrant(ctx context.Context, name string, key string, permType PermissionType) (*AuthRoleGrantResponse, error) {
perm := &authpb.Permission{
Key: []byte(key),
PermType: authpb.Permission_Type(permType),
}
resp, err := auth.remote.RoleGrant(ctx, &pb.AuthRoleGrantRequest{Name: name, Perm: perm})
return (*AuthRoleGrantResponse)(resp), err
}
func StrToPermissionType(s string) (PermissionType, error) {
val, ok := authpb.Permission_Type_value[strings.ToUpper(s)]
if ok {
return PermissionType(val), nil
}
return PermissionType(-1), fmt.Errorf("invalid permission type: %s", s)
}