github.com/swiftstack/ProxyFS@v0.0.0-20210203235616-4017c267d62f/dlm/config.go (about) 1 // Copyright (c) 2015-2021, NVIDIA CORPORATION. 2 // SPDX-License-Identifier: Apache-2.0 3 4 package dlm 5 6 // Configuration variables for DLM 7 8 import ( 9 "github.com/swiftstack/ProxyFS/conf" 10 "github.com/swiftstack/ProxyFS/trackedlock" 11 "github.com/swiftstack/ProxyFS/transitions" 12 ) 13 14 type globalsStruct struct { 15 trackedlock.Mutex 16 17 // Map used to store locks owned locally 18 // NOTE: This map is protected by the Mutex 19 localLockMap map[string]*localLockTrack 20 21 // TODO - channels for STOP and from DLM lock master? 22 // is the channel lock one per lock or a global one from DLM? 23 // how could it be... probably just one receive thread the locks 24 // map, checks bit and releases lock if no one using, otherwise 25 // blocks until it is free... 26 } 27 28 var globals globalsStruct 29 30 func init() { 31 transitions.Register("dlm", &globals) 32 } 33 34 func (dummy *globalsStruct) Up(confMap conf.ConfMap) (err error) { 35 // Create map used to store locks 36 globals.localLockMap = make(map[string]*localLockTrack) 37 return 38 } 39 40 func (dummy *globalsStruct) VolumeGroupCreated(confMap conf.ConfMap, volumeGroupName string, activePeer string, virtualIPAddr string) (err error) { 41 return nil 42 } 43 func (dummy *globalsStruct) VolumeGroupMoved(confMap conf.ConfMap, volumeGroupName string, activePeer string, virtualIPAddr string) (err error) { 44 return nil 45 } 46 func (dummy *globalsStruct) VolumeGroupDestroyed(confMap conf.ConfMap, volumeGroupName string) (err error) { 47 return nil 48 } 49 func (dummy *globalsStruct) VolumeCreated(confMap conf.ConfMap, volumeName string, volumeGroupName string) (err error) { 50 return nil 51 } 52 func (dummy *globalsStruct) VolumeMoved(confMap conf.ConfMap, volumeName string, volumeGroupName string) (err error) { 53 return nil 54 } 55 func (dummy *globalsStruct) VolumeDestroyed(confMap conf.ConfMap, volumeName string) (err error) { 56 return nil 57 } 58 func (dummy *globalsStruct) ServeVolume(confMap conf.ConfMap, volumeName string) (err error) { 59 return nil 60 } 61 func (dummy *globalsStruct) UnserveVolume(confMap conf.ConfMap, volumeName string) (err error) { 62 return nil 63 } 64 func (dummy *globalsStruct) VolumeToBeUnserved(confMap conf.ConfMap, volumeName string) (err error) { 65 return nil 66 } 67 func (dummy *globalsStruct) SignaledStart(confMap conf.ConfMap) (err error) { 68 return nil 69 } 70 func (dummy *globalsStruct) SignaledFinish(confMap conf.ConfMap) (err error) { 71 return nil 72 } 73 func (dummy *globalsStruct) Down(confMap conf.ConfMap) (err error) { 74 return nil 75 }