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|
package agent
import (
st "github.com/iotbzh/xds-agent/lib/syncthing"
)
// IPROJECT interface implementation for syncthing projects
// STProject .
type STProject struct {
*Context
server *XdsServer
folder *XdsFolderConfig
eventIDs []int
}
// NewProjectST Create a new instance of STProject
func NewProjectST(ctx *Context, svr *XdsServer) *STProject {
p := STProject{
Context: ctx,
server: svr,
folder: &XdsFolderConfig{},
}
return &p
}
// Add a new project
func (p *STProject) Add(cfg ProjectConfig) (*ProjectConfig, error) {
var err error
// Add project/folder into XDS Server
err = p.server.FolderAdd(p.server.ProjectToFolder(cfg), p.folder)
if err != nil {
return nil, err
}
svrPrj := p.GetProject()
// Declare project into local Syncthing
id, err := p.SThg.FolderChange(st.FolderChangeArg{
ID: svrPrj.ID,
Label: svrPrj.Label,
RelativePath: cfg.ClientPath,
SyncThingID: p.server.ServerConfig.Builder.SyncThingID,
})
if err != nil {
return nil, err
}
locPrj, err := p.SThg.FolderConfigGet(id)
if err != nil {
svrPrj.Status = StatusErrorConfig
return nil, err
}
if svrPrj.ID != locPrj.ID {
p.Log.Errorf("Project ID in XDSServer and local ST differ: %s != %s", svrPrj.ID, locPrj.ID)
}
// Use Update function to setup remains fields
return p.UpdateProject(*svrPrj)
}
// Delete a project
func (p *STProject) Delete() error {
errSvr := p.server.FolderDelete(p.folder.ID)
errLoc := p.SThg.FolderDelete(p.folder.ID)
if errSvr != nil {
return errSvr
}
return errLoc
}
// GetProject Get public part of project config
func (p *STProject) GetProject() *ProjectConfig {
prj := p.server.FolderToProject(*p.folder)
prj.ServerID = p.server.ID
return &prj
}
// UpdateProject Update project config
func (p *STProject) UpdateProject(prj ProjectConfig) (*ProjectConfig, error) {
// Update folder
p.folder = p.server.ProjectToFolder(prj)
svrPrj := p.GetProject()
// Register events to update folder status
// Register to XDS Server events
p.server.EventOn("event:FolderStateChanged", p._cbServerFolderChanged)
if err := p.server.EventRegister("FolderStateChanged", svrPrj.ID); err != nil {
p.Log.Warningf("XDS Server EventRegister failed: %v", err)
return svrPrj, err
}
// Register to Local Syncthing events
for _, evName := range []string{st.EventStateChanged, st.EventFolderPaused} {
evID, err := p.SThg.Events.Register(evName, p._cbLocalSTEvents, svrPrj.ID, nil)
if err != nil {
return nil, err
}
p.eventIDs = append(p.eventIDs, evID)
}
return svrPrj, nil
}
// GetServer Get the XdsServer that holds this project
func (p *STProject) GetServer() *XdsServer {
return p.server
}
// Sync Force project files synchronization
func (p *STProject) Sync() error {
if err := p.server.FolderSync(p.folder.ID); err != nil {
return err
}
return p.SThg.FolderScan(p.folder.ID, "")
}
// IsInSync Check if project files are in-sync
func (p *STProject) IsInSync() (bool, error) {
// Should be up-to-date by callbacks (see below)
return p.folder.IsInSync, nil
}
/**
** Private functions
***/
// callback use to update (XDS Server) folder IsInSync status
func (p *STProject) _cbServerFolderChanged(data interface{}) {
evt := data.(XdsEventFolderChange)
// Only process event that concerns this project/folder ID
if p.folder.ID != evt.Folder.ID {
return
}
if evt.Folder.IsInSync != p.folder.DataCloudSync.STSvrIsInSync ||
evt.Folder.Status != p.folder.DataCloudSync.STSvrStatus {
p.folder.DataCloudSync.STSvrIsInSync = evt.Folder.IsInSync
p.folder.DataCloudSync.STSvrStatus = evt.Folder.Status
if err := p.events.Emit(EVTProjectChange, p.server.FolderToProject(*p.folder)); err != nil {
p.Log.Warningf("Cannot notify project change: %v", err)
}
}
}
// callback use to update IsInSync status
func (p *STProject) _cbLocalSTEvents(ev st.Event, data *st.EventsCBData) {
inSync := p.folder.DataCloudSync.STLocIsInSync
sts := p.folder.DataCloudSync.STLocStatus
prevSync := inSync
prevStatus := sts
switch ev.Type {
case st.EventStateChanged:
to := ev.Data["to"]
switch to {
case "scanning", "syncing":
sts = StatusSyncing
case "idle":
sts = StatusEnable
}
inSync = (to == "idle")
case st.EventFolderPaused:
if sts == StatusEnable {
sts = StatusPause
}
inSync = false
}
if prevSync != inSync || prevStatus != sts {
p.folder.DataCloudSync.STLocIsInSync = inSync
p.folder.DataCloudSync.STLocStatus = sts
if err := p.events.Emit(EVTProjectChange, p.server.FolderToProject(*p.folder)); err != nil {
p.Log.Warningf("Cannot notify project change: %v", err)
}
}
}
|
