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120 lines
3.1 KiB
120 lines
3.1 KiB
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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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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*/
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package cmd
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import (
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"errors"
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"net/rpc"
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"time"
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router "github.com/gorilla/mux"
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)
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const adminPath = "/admin"
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var errUnsupportedBackend = errors.New("not supported for non erasure-code backend")
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// adminCmd - exports RPC methods for service status, stop and
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// restart commands.
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type adminCmd struct {
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AuthRPCServer
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}
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// ListLocksQuery - wraps ListLocks API's query values to send over RPC.
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type ListLocksQuery struct {
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AuthRPCArgs
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bucket string
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prefix string
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relTime time.Duration
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}
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// ListLocksReply - wraps ListLocks response over RPC.
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type ListLocksReply struct {
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AuthRPCReply
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volLocks []VolumeLockInfo
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}
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// Restart - Restart this instance of minio server.
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func (s *adminCmd) Restart(args *AuthRPCArgs, reply *AuthRPCReply) error {
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if err := args.IsAuthenticated(); err != nil {
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return err
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}
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globalServiceSignalCh <- serviceRestart
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return nil
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}
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// ListLocks - lists locks held by requests handled by this server instance.
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func (s *adminCmd) ListLocks(query *ListLocksQuery, reply *ListLocksReply) error {
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if err := query.IsAuthenticated(); err != nil {
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return err
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}
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volLocks := listLocksInfo(query.bucket, query.prefix, query.relTime)
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*reply = ListLocksReply{volLocks: volLocks}
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return nil
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}
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// ReInitDisk - reinitialize storage disks and object layer to use the
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// new format.
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func (s *adminCmd) ReInitDisks(args *AuthRPCArgs, reply *AuthRPCReply) error {
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if err := args.IsAuthenticated(); err != nil {
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return err
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}
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if !globalIsXL {
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return errUnsupportedBackend
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}
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// Get the current object layer instance.
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objLayer := newObjectLayerFn()
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// Initialize new disks to include the newly formatted disks.
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bootstrapDisks, err := initStorageDisks(globalEndpoints)
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if err != nil {
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return err
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}
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// Initialize new object layer with newly formatted disks.
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newObjectAPI, err := newXLObjects(bootstrapDisks)
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if err != nil {
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return err
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}
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// Replace object layer with newly formatted storage.
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globalObjLayerMutex.Lock()
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globalObjectAPI = newObjectAPI
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globalObjLayerMutex.Unlock()
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// Shutdown storage belonging to old object layer instance.
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objLayer.Shutdown()
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return nil
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}
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// registerAdminRPCRouter - registers RPC methods for service status,
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// stop and restart commands.
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func registerAdminRPCRouter(mux *router.Router) error {
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adminRPCHandler := &adminCmd{}
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adminRPCServer := rpc.NewServer()
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err := adminRPCServer.RegisterName("Admin", adminRPCHandler)
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if err != nil {
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return traceError(err)
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}
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adminRouter := mux.NewRoute().PathPrefix(reservedBucket).Subrouter()
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adminRouter.Path(adminPath).Handler(adminRPCServer)
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return nil
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}
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