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Reload group descriptions periodically.
This commit is contained in:
parent
69fcdfbaba
commit
5796d4065b
1 changed files with 53 additions and 5 deletions
56
group.go
56
group.go
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@ -11,6 +11,7 @@ import (
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"os"
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"path/filepath"
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"sync"
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"time"
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"github.com/pion/webrtc/v2"
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)
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@ -51,6 +52,7 @@ type client struct {
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type group struct {
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name string
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dead bool
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description *groupDescription
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mu sync.Mutex
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@ -104,7 +106,6 @@ func addGroup(name string) (*group, error) {
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}
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g := groups.groups[name]
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if g == nil {
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desc, err := getDescription(name)
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if err != nil {
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@ -115,6 +116,29 @@ func addGroup(name string) (*group, error) {
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description: desc,
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}
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groups.groups[name] = g
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} else if g.dead || time.Since(g.description.loadTime) > 5*time.Second {
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changed, err := descriptionChanged(name, g.description)
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if err != nil {
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g.dead = true
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if !g.description.Public {
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delGroupUnlocked(name)
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}
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return nil, err
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}
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if changed {
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desc, err := getDescription(name)
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if err != nil {
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g.dead = true
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if !g.description.Public {
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delGroupUnlocked(name)
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}
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return nil, err
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}
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g.dead = false
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g.description = desc
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} else {
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g.description.loadTime = time.Now()
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}
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}
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return g, nil
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@ -175,7 +199,7 @@ func delClient(c *client) {
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g.clients =
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append(g.clients[:i], g.clients[i+1:]...)
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c.group = nil
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if len(g.clients) == 0 {
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if len(g.clients) == 0 && !g.description.Public {
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delGroupUnlocked(g.name)
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}
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return
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@ -253,6 +277,9 @@ func matchUser(user, pass string, users []groupUser) (bool, bool) {
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}
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type groupDescription struct {
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loadTime time.Time `json:"-"`
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modTime time.Time `json:"-"`
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fileSize int64 `json:"-"`
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Public bool `json:"public,omitempty"`
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MaxClients int `json:"max-clients,omitempty"`
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AllowAnonymous bool `json:"allow-anonymous,omitempty"`
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@ -261,24 +288,45 @@ type groupDescription struct {
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Other []groupUser `json:"other,omitempty"`
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}
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func descriptionChanged(name string, old *groupDescription) (bool, error) {
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fi, err := os.Stat(filepath.Join(groupsDir, name+".json"))
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if err != nil {
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if os.IsNotExist(err) {
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err = userError("group does not exist")
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}
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return false, err
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}
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if fi.Size() != old.fileSize || fi.ModTime() != old.modTime {
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return true, err
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}
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return false, err
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}
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func getDescription(name string) (*groupDescription, error) {
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r, err := os.Open(filepath.Join(groupsDir, name+".json"))
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if err != nil {
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if os.IsNotExist(err) {
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err = userError("group does not exist")
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} else if os.IsPermission(err) {
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err = userError("unauthorised")
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}
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return nil, err
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}
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defer r.Close()
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var desc groupDescription
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fi, err := r.Stat()
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if err != nil {
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return nil, err
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}
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desc.fileSize = fi.Size()
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desc.modTime = fi.ModTime()
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d := json.NewDecoder(r)
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err = d.Decode(&desc)
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if err != nil {
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return nil, err
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}
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desc.loadTime = time.Now()
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return &desc, nil
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}
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