Fix race condition and flawed logic mis-querying panel for servers; closes pterodactyl/panel#3059
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de9b413bc2
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1393937904
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@ -71,31 +71,31 @@ func (c *client) GetServersPaged(ctx context.Context, page, limit int) ([]api.Ra
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return r.Data, r.Meta, nil
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}
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func (c *client) GetServers(ctx context.Context, perPage int) ([]api.RawServerData, error) {
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servers, pageMeta, err := c.GetServersPaged(ctx, 0, perPage)
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// GetServers returns all of the servers that are present on the Panel making
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// parallel API calls to the endpoint if more than one page of servers is returned.
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func (c *client) GetServers(ctx context.Context, limit int) ([]api.RawServerData, error) {
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servers, meta, err := c.GetServersPaged(ctx, 0, limit)
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if err != nil {
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return nil, err
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}
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// if the amount of servers exceeds the page limit, get the remaining pages in parallel
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if pageMeta.LastPage > 1 {
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eg, _ := errgroup.WithContext(ctx)
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serversMu := sync.Mutex{}
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for page := pageMeta.CurrentPage + 1; page <= pageMeta.LastPage; page++ {
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eg.Go(func() error {
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ps, _, err := c.GetServersPaged(ctx, perPage, int(page))
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var mu sync.Mutex
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if meta.LastPage > 1 {
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g, ctx := errgroup.WithContext(ctx)
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for page := meta.CurrentPage + 1; page <= meta.LastPage; page++ {
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page := page
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g.Go(func() error {
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ps, _, err := c.GetServersPaged(ctx, int(page), limit)
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if err != nil {
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return err
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}
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serversMu.Lock()
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mu.Lock()
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servers = append(servers, ps...)
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serversMu.Unlock()
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mu.Unlock()
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return nil
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})
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}
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if err := eg.Wait(); err != nil {
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if err := g.Wait(); err != nil {
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return nil, err
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}
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}
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@ -28,11 +28,11 @@ type Manager struct {
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// the servers that are currently present on the filesystem and set them into
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// the manager.
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func NewManager(ctx context.Context, client remote.Client) (*Manager, error) {
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c := NewEmptyManager()
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if err := c.initializeFromRemoteSource(ctx, client); err != nil {
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m := NewEmptyManager()
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if err := m.init(ctx, client); err != nil {
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return nil, err
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}
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return c, nil
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return m, nil
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}
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// NewEmptyManager returns a new empty manager collection without actually
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@ -44,7 +44,7 @@ func NewEmptyManager() *Manager {
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// initializeFromRemoteSource iterates over a given directory and loads all of
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// the servers listed before returning them to the calling function.
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func (m *Manager) initializeFromRemoteSource(ctx context.Context, client remote.Client) error {
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func (m *Manager) init(ctx context.Context, client remote.Client) error {
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log.Info("fetching list of servers from API")
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servers, err := client.GetServers(ctx, config.Get().RemoteQuery.BootServersPerPage)
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if err != nil {
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