28d526bc68
During startup until the object layer is initialized logger is disabled to provide for a cleaner UI error message. CriticalIf is disabled, use FatalIf instead. Also never call os.Exit(1) on running servers where you can return error to client in handlers.
128 lines
4 KiB
Go
128 lines
4 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016, 2017, 2018 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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"context"
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"path"
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"time"
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"github.com/gorilla/mux"
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"github.com/minio/minio/cmd/logger"
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xrpc "github.com/minio/minio/cmd/rpc"
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)
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const adminServiceName = "Admin"
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const adminServiceSubPath = "/admin"
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var adminServicePath = path.Join(minioReservedBucketPath, adminServiceSubPath)
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// adminRPCReceiver - Admin RPC receiver for admin RPC server.
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type adminRPCReceiver struct {
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local *localAdminClient
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}
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// SignalServiceArgs - provides the signal argument to SignalService RPC
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type SignalServiceArgs struct {
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AuthArgs
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Sig serviceSignal
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}
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// SignalService - Send a restart or stop signal to the service
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func (receiver *adminRPCReceiver) SignalService(args *SignalServiceArgs, reply *VoidReply) error {
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return receiver.local.SignalService(args.Sig)
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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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AuthArgs
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Bucket string
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Prefix string
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Duration time.Duration
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}
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// ListLocks - lists locks held by requests handled by this server instance.
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func (receiver *adminRPCReceiver) ListLocks(args *ListLocksQuery, reply *[]VolumeLockInfo) (err error) {
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*reply, err = receiver.local.ListLocks(args.Bucket, args.Prefix, args.Duration)
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return err
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}
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// ServerInfo - returns the server info when object layer was initialized on this server.
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func (receiver *adminRPCReceiver) ServerInfo(args *AuthArgs, reply *ServerInfoData) (err error) {
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*reply, err = receiver.local.ServerInfo()
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return err
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}
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// GetConfig - returns the config.json of this server.
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func (receiver *adminRPCReceiver) GetConfig(args *AuthArgs, reply *[]byte) (err error) {
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*reply, err = receiver.local.GetConfig()
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return err
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}
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// ReInitFormatArgs - provides dry-run information to re-initialize format.json
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type ReInitFormatArgs struct {
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AuthArgs
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DryRun bool
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}
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// ReInitFormat - re-init 'format.json'
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func (receiver *adminRPCReceiver) ReInitFormat(args *ReInitFormatArgs, reply *VoidReply) error {
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return receiver.local.ReInitFormat(args.DryRun)
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}
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// WriteConfigArgs - wraps the bytes to be written and temporary file name.
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type WriteConfigArgs struct {
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AuthArgs
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TmpFileName string
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Buf []byte
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}
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// WriteTmpConfig - writes the supplied config contents onto the
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// supplied temporary file.
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func (receiver *adminRPCReceiver) WriteTmpConfig(args *WriteConfigArgs, reply *VoidReply) error {
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return receiver.local.WriteTmpConfig(args.TmpFileName, args.Buf)
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}
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// CommitConfigArgs - wraps the config file name that needs to be
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// committed into config.json on this node.
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type CommitConfigArgs struct {
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AuthArgs
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FileName string
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}
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// CommitConfig - Renames the temporary file into config.json on this node.
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func (receiver *adminRPCReceiver) CommitConfig(args *CommitConfigArgs, reply *VoidReply) error {
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return receiver.local.CommitConfig(args.FileName)
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}
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// NewAdminRPCServer - returns new admin RPC server.
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func NewAdminRPCServer() (*xrpc.Server, error) {
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rpcServer := xrpc.NewServer()
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if err := rpcServer.RegisterName(adminServiceName, &adminRPCReceiver{&localAdminClient{}}); err != nil {
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return nil, err
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}
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return rpcServer, nil
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}
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// registerAdminRPCRouter - creates and registers Admin RPC server and its router.
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func registerAdminRPCRouter(router *mux.Router) {
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rpcServer, err := NewAdminRPCServer()
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logger.FatalIf(err, "Unable to initialize Lock RPC Server", context.Background())
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subrouter := router.PathPrefix(minioReservedBucketPath).Subrouter()
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subrouter.Path(adminServiceSubPath).Handler(rpcServer)
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}
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