2aa18cafc6
With CoreDNS now supporting etcdv3 as the DNS backend, we can update our federation target to etcdv3. Users will now be able to use etcdv3 server as the federation backbone. Minio will update bucket data to etcdv3 and CoreDNS can pick that data up and serve it as bucket style DNS path.
232 lines
9.4 KiB
Go
232 lines
9.4 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package clientv3
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import (
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"context"
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"fmt"
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"strings"
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"github.com/coreos/etcd/auth/authpb"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"google.golang.org/grpc"
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)
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type (
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AuthEnableResponse pb.AuthEnableResponse
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AuthDisableResponse pb.AuthDisableResponse
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AuthenticateResponse pb.AuthenticateResponse
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AuthUserAddResponse pb.AuthUserAddResponse
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AuthUserDeleteResponse pb.AuthUserDeleteResponse
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AuthUserChangePasswordResponse pb.AuthUserChangePasswordResponse
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AuthUserGrantRoleResponse pb.AuthUserGrantRoleResponse
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AuthUserGetResponse pb.AuthUserGetResponse
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AuthUserRevokeRoleResponse pb.AuthUserRevokeRoleResponse
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AuthRoleAddResponse pb.AuthRoleAddResponse
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AuthRoleGrantPermissionResponse pb.AuthRoleGrantPermissionResponse
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AuthRoleGetResponse pb.AuthRoleGetResponse
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AuthRoleRevokePermissionResponse pb.AuthRoleRevokePermissionResponse
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AuthRoleDeleteResponse pb.AuthRoleDeleteResponse
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AuthUserListResponse pb.AuthUserListResponse
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AuthRoleListResponse pb.AuthRoleListResponse
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PermissionType authpb.Permission_Type
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Permission authpb.Permission
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)
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const (
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PermRead = authpb.READ
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PermWrite = authpb.WRITE
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PermReadWrite = authpb.READWRITE
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)
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type Auth interface {
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// AuthEnable enables auth of an etcd cluster.
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AuthEnable(ctx context.Context) (*AuthEnableResponse, error)
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// AuthDisable disables auth of an etcd cluster.
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AuthDisable(ctx context.Context) (*AuthDisableResponse, error)
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// UserAdd adds a new user to an etcd cluster.
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UserAdd(ctx context.Context, name string, password string) (*AuthUserAddResponse, error)
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// UserDelete deletes a user from an etcd cluster.
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UserDelete(ctx context.Context, name string) (*AuthUserDeleteResponse, error)
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// UserChangePassword changes a password of a user.
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UserChangePassword(ctx context.Context, name string, password string) (*AuthUserChangePasswordResponse, error)
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// UserGrantRole grants a role to a user.
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UserGrantRole(ctx context.Context, user string, role string) (*AuthUserGrantRoleResponse, error)
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// UserGet gets a detailed information of a user.
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UserGet(ctx context.Context, name string) (*AuthUserGetResponse, error)
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// UserList gets a list of all users.
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UserList(ctx context.Context) (*AuthUserListResponse, error)
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// UserRevokeRole revokes a role of a user.
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UserRevokeRole(ctx context.Context, name string, role string) (*AuthUserRevokeRoleResponse, error)
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// RoleAdd adds a new role to an etcd cluster.
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RoleAdd(ctx context.Context, name string) (*AuthRoleAddResponse, error)
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// RoleGrantPermission grants a permission to a role.
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RoleGrantPermission(ctx context.Context, name string, key, rangeEnd string, permType PermissionType) (*AuthRoleGrantPermissionResponse, error)
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// RoleGet gets a detailed information of a role.
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RoleGet(ctx context.Context, role string) (*AuthRoleGetResponse, error)
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// RoleList gets a list of all roles.
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RoleList(ctx context.Context) (*AuthRoleListResponse, error)
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// RoleRevokePermission revokes a permission from a role.
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RoleRevokePermission(ctx context.Context, role string, key, rangeEnd string) (*AuthRoleRevokePermissionResponse, error)
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// RoleDelete deletes a role.
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RoleDelete(ctx context.Context, role string) (*AuthRoleDeleteResponse, error)
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}
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type authClient struct {
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remote pb.AuthClient
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callOpts []grpc.CallOption
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}
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func NewAuth(c *Client) Auth {
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api := &authClient{remote: RetryAuthClient(c)}
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if c != nil {
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api.callOpts = c.callOpts
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}
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return api
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}
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func (auth *authClient) AuthEnable(ctx context.Context) (*AuthEnableResponse, error) {
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resp, err := auth.remote.AuthEnable(ctx, &pb.AuthEnableRequest{}, auth.callOpts...)
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return (*AuthEnableResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) AuthDisable(ctx context.Context) (*AuthDisableResponse, error) {
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resp, err := auth.remote.AuthDisable(ctx, &pb.AuthDisableRequest{}, auth.callOpts...)
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return (*AuthDisableResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserAdd(ctx context.Context, name string, password string) (*AuthUserAddResponse, error) {
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resp, err := auth.remote.UserAdd(ctx, &pb.AuthUserAddRequest{Name: name, Password: password}, auth.callOpts...)
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return (*AuthUserAddResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserDelete(ctx context.Context, name string) (*AuthUserDeleteResponse, error) {
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resp, err := auth.remote.UserDelete(ctx, &pb.AuthUserDeleteRequest{Name: name}, auth.callOpts...)
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return (*AuthUserDeleteResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserChangePassword(ctx context.Context, name string, password string) (*AuthUserChangePasswordResponse, error) {
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resp, err := auth.remote.UserChangePassword(ctx, &pb.AuthUserChangePasswordRequest{Name: name, Password: password}, auth.callOpts...)
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return (*AuthUserChangePasswordResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserGrantRole(ctx context.Context, user string, role string) (*AuthUserGrantRoleResponse, error) {
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resp, err := auth.remote.UserGrantRole(ctx, &pb.AuthUserGrantRoleRequest{User: user, Role: role}, auth.callOpts...)
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return (*AuthUserGrantRoleResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserGet(ctx context.Context, name string) (*AuthUserGetResponse, error) {
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resp, err := auth.remote.UserGet(ctx, &pb.AuthUserGetRequest{Name: name}, auth.callOpts...)
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return (*AuthUserGetResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserList(ctx context.Context) (*AuthUserListResponse, error) {
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resp, err := auth.remote.UserList(ctx, &pb.AuthUserListRequest{}, auth.callOpts...)
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return (*AuthUserListResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) UserRevokeRole(ctx context.Context, name string, role string) (*AuthUserRevokeRoleResponse, error) {
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resp, err := auth.remote.UserRevokeRole(ctx, &pb.AuthUserRevokeRoleRequest{Name: name, Role: role}, auth.callOpts...)
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return (*AuthUserRevokeRoleResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleAdd(ctx context.Context, name string) (*AuthRoleAddResponse, error) {
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resp, err := auth.remote.RoleAdd(ctx, &pb.AuthRoleAddRequest{Name: name}, auth.callOpts...)
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return (*AuthRoleAddResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleGrantPermission(ctx context.Context, name string, key, rangeEnd string, permType PermissionType) (*AuthRoleGrantPermissionResponse, error) {
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perm := &authpb.Permission{
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Key: []byte(key),
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RangeEnd: []byte(rangeEnd),
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PermType: authpb.Permission_Type(permType),
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}
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resp, err := auth.remote.RoleGrantPermission(ctx, &pb.AuthRoleGrantPermissionRequest{Name: name, Perm: perm}, auth.callOpts...)
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return (*AuthRoleGrantPermissionResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleGet(ctx context.Context, role string) (*AuthRoleGetResponse, error) {
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resp, err := auth.remote.RoleGet(ctx, &pb.AuthRoleGetRequest{Role: role}, auth.callOpts...)
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return (*AuthRoleGetResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleList(ctx context.Context) (*AuthRoleListResponse, error) {
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resp, err := auth.remote.RoleList(ctx, &pb.AuthRoleListRequest{}, auth.callOpts...)
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return (*AuthRoleListResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleRevokePermission(ctx context.Context, role string, key, rangeEnd string) (*AuthRoleRevokePermissionResponse, error) {
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resp, err := auth.remote.RoleRevokePermission(ctx, &pb.AuthRoleRevokePermissionRequest{Role: role, Key: []byte(key), RangeEnd: []byte(rangeEnd)}, auth.callOpts...)
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return (*AuthRoleRevokePermissionResponse)(resp), toErr(ctx, err)
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}
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func (auth *authClient) RoleDelete(ctx context.Context, role string) (*AuthRoleDeleteResponse, error) {
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resp, err := auth.remote.RoleDelete(ctx, &pb.AuthRoleDeleteRequest{Role: role}, auth.callOpts...)
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return (*AuthRoleDeleteResponse)(resp), toErr(ctx, err)
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}
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func StrToPermissionType(s string) (PermissionType, error) {
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val, ok := authpb.Permission_Type_value[strings.ToUpper(s)]
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if ok {
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return PermissionType(val), nil
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}
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return PermissionType(-1), fmt.Errorf("invalid permission type: %s", s)
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}
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type authenticator struct {
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conn *grpc.ClientConn // conn in-use
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remote pb.AuthClient
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callOpts []grpc.CallOption
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}
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func (auth *authenticator) authenticate(ctx context.Context, name string, password string) (*AuthenticateResponse, error) {
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resp, err := auth.remote.Authenticate(ctx, &pb.AuthenticateRequest{Name: name, Password: password}, auth.callOpts...)
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return (*AuthenticateResponse)(resp), toErr(ctx, err)
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}
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func (auth *authenticator) close() {
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auth.conn.Close()
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}
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func newAuthenticator(ctx context.Context, target string, opts []grpc.DialOption, c *Client) (*authenticator, error) {
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conn, err := grpc.DialContext(ctx, target, opts...)
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if err != nil {
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return nil, err
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}
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api := &authenticator{
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conn: conn,
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remote: pb.NewAuthClient(conn),
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}
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if c != nil {
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api.callOpts = c.callOpts
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}
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return api, nil
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}
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