mirror of https://github.com/dirtbags/moth.git
889 lines
21 KiB
Go
889 lines
21 KiB
Go
package main
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import (
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"bufio"
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"encoding/csv"
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"errors"
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"fmt"
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"log"
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"math/rand"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/dirtbags/moth/pkg/award"
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"github.com/spf13/afero"
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)
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// DistinguishableChars are visually unambiguous glyphs.
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// People with mediocre handwriting could write these down unambiguously,
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// and they can be entered without holding down shift.
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const DistinguishableChars = "34678abcdefhikmnpqrtwxy="
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// RFC3339Space is a time layout which replaces 'T' with a space.
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// This is also a valid RFC3339 format.
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const RFC3339Space = "2006-01-02 15:04:05Z07:00"
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// ErrAlreadyRegistered means a team cannot be registered because it was registered previously.
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var ErrAlreadyRegistered = errors.New("team ID has already been registered")
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// State defines the current state of a MOTH instance.
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// We use the filesystem for synchronization between threads.
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// The only thing State methods need to know is the path to the state directory.
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type State struct {
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afero.Fs
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// Enabled tracks whether the current State system is processing updates
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Enabled bool
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refreshNow chan bool
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eventStream chan []string
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eventWriter *csv.Writer
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eventWriterFile afero.File
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// Caches, so we're not hammering NFS with metadata operations
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teamNames map[string]string
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pointsLog award.List
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messages string
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teamIDLock sync.RWMutex
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teamIDFileLock sync.RWMutex
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teamNameLock sync.RWMutex
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teamNameFileLock sync.RWMutex
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pointsLock sync.RWMutex
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pointsLogFileLock sync.RWMutex // Sometimes, we need to fiddle with the file, while leaving the internal state alone
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messageFileLock sync.RWMutex
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teamNamesLastChange time.Time
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}
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// NewState returns a new State struct backed by the given Fs
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func NewState(fs afero.Fs) *State {
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s := &State{
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Fs: fs,
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Enabled: true,
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refreshNow: make(chan bool, 5),
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eventStream: make(chan []string, 80),
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teamNames: make(map[string]string),
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}
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if err := s.reopenEventLog(); err != nil {
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log.Fatal(err)
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}
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return s
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}
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// updateEnabled checks a few things to see if this state directory is "enabled".
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func (s *State) updateEnabled() {
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nextEnabled := true
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why := "`state/enabled` present, `state/hours.txt` missing"
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if untilFile, err := s.Open("hours.txt"); err == nil {
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defer untilFile.Close()
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why = "`state/hours.txt` present"
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scanner := bufio.NewScanner(untilFile)
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for scanner.Scan() {
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line := scanner.Text()
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if len(line) < 1 {
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continue
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}
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thisEnabled := true
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switch line[0] {
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case '+':
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thisEnabled = true
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line = line[1:]
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case '-':
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thisEnabled = false
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line = line[1:]
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case '#':
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continue
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default:
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log.Println("Misformatted line in hours.txt file")
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}
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line = strings.TrimSpace(line)
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until, err := time.Parse(time.RFC3339, line)
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if err != nil {
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until, err = time.Parse(RFC3339Space, line)
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}
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if err != nil {
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log.Println("Suspended: Unparseable until date:", line)
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continue
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}
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if until.Before(time.Now()) {
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nextEnabled = thisEnabled
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}
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}
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}
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if _, err := s.Stat("enabled"); os.IsNotExist(err) {
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nextEnabled = false
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why = "`state/enabled` missing"
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}
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if nextEnabled != s.Enabled {
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s.Enabled = nextEnabled
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log.Printf("Setting enabled=%v: %s", s.Enabled, why)
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if s.Enabled {
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s.LogEvent("enabled", "", "", "", 0, why)
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} else {
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s.LogEvent("disabled", "", "", "", 0, why)
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}
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}
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}
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/* ****************** Team ID functions ****************** */
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func (s *State) TeamIDs() ([]string, error) {
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var teamIDs []string
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s.teamIDFileLock.RLock()
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defer s.teamIDFileLock.RUnlock()
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idsFile, err := s.Open("teamids.txt")
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if err != nil {
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return teamIDs, fmt.Errorf("team IDs file does not exist")
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}
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defer idsFile.Close()
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scanner := bufio.NewScanner(idsFile)
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for scanner.Scan() {
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teamIDs = append(teamIDs, scanner.Text())
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}
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return teamIDs, nil
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}
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func (s *State) writeTeamIDs(teamIDs []string) error {
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s.teamIDFileLock.Lock()
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defer s.teamIDFileLock.Unlock()
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if f, err := s.OpenFile("teamids.txt", os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644); err == nil {
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defer f.Close()
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for _, teamID := range teamIDs {
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fmt.Fprintln(f, string(teamID))
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}
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} else {
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return err
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}
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return nil
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}
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func (s *State) SetTeamIDs(teamIDs []string) error {
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s.teamIDLock.Lock()
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defer s.teamIDLock.Unlock()
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return s.writeTeamIDs(teamIDs)
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}
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func (s *State) AddTeamID(newTeamID string) error {
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s.teamIDLock.Lock()
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defer s.teamIDLock.Unlock()
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teamIDs, err := s.TeamIDs()
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if err != nil {
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return err
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}
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for _, teamID := range teamIDs {
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if newTeamID == teamID {
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return fmt.Errorf("Team ID already exists")
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}
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}
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teamIDs = append(teamIDs, newTeamID)
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return s.writeTeamIDs(teamIDs)
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}
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func (s *State) RemoveTeamID(removeTeamID string) error {
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s.teamIDLock.Lock()
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defer s.teamIDLock.Unlock()
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teamIDs, err := s.TeamIDs()
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if err != nil {
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return err
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}
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for _, teamID := range teamIDs {
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if removeTeamID != teamID {
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teamIDs = append(teamIDs, teamID)
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}
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}
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return s.writeTeamIDs(teamIDs)
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}
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func (s *State) TeamIDExists(teamID string) (bool, error) {
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s.teamIDLock.RLock()
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defer s.teamIDLock.RUnlock()
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teamIDs, err := s.TeamIDs()
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if err != nil {
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return false, err
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}
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for _, candidateTeamID := range teamIDs {
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if teamID == candidateTeamID {
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return true, nil
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}
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}
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return false, nil
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}
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/* ********************* Team Name functions ********* */
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// TeamName returns team name given a team ID.
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func (s *State) TeamName(teamID string) (string, error) {
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s.teamNameLock.RLock()
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defer s.teamNameLock.RUnlock()
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name, ok := s.teamNames[teamID]
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if !ok {
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return "", fmt.Errorf("unregistered team ID: %s", teamID)
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}
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return name, nil
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}
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func (s *State) TeamNames() map[string]string {
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s.teamNameLock.RLock()
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defer s.teamNameLock.RUnlock()
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return s.teamNames
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}
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// SetTeamName writes out team name.
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// This can only be done once per team.
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func (s *State) SetTeamName(teamID, teamName string) error {
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s.teamNameFileLock.Lock()
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defer s.teamNameFileLock.Unlock()
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teamIDs, err := s.TeamIDs()
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if err != nil {
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return err
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}
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found := false
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for _, validTeamID := range teamIDs {
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if validTeamID == teamID {
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found = true
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break
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}
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}
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if !found {
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return fmt.Errorf("team ID not found in list of valid team IDs")
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}
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s.teamNameLock.RLock()
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_, ok := s.teamNames[teamID]
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s.teamNameLock.RUnlock()
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if ok {
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return ErrAlreadyRegistered
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}
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teamFilename := filepath.Join("teams", teamID)
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teamFile, err := s.Fs.OpenFile(teamFilename, os.O_CREATE|os.O_WRONLY|os.O_EXCL, 0644)
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if os.IsExist(err) { // This shouldn't ever hit, since we just checked, but strange things happen
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return ErrAlreadyRegistered
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} else if err != nil {
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return err
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}
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defer teamFile.Close()
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log.Printf("Setting team name [%s] in file %s", teamName, teamFilename)
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fmt.Fprintln(teamFile, teamName)
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teamFile.Close()
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s.refreshNow <- true
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return nil
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}
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func (s *State) SetTeamNames(teams map[string]string) error {
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return s.writeTeamNames(teams)
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}
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func (s *State) TeamIDFromName(teamName string) (string, error) {
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for name, id := range s.TeamNames() {
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if name == teamName {
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return id, nil
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}
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}
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return "", fmt.Errorf("team name not found")
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}
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func (s *State) DeleteTeamName(teamID string) error {
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newTeams := s.TeamNames()
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_, ok := newTeams[teamID];
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if ok {
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delete(newTeams, teamID)
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} else {
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return fmt.Errorf("team not found")
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}
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return s.writeTeamNames(newTeams)
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}
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func (s *State) writeTeamNames(teams map[string]string) error {
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s.teamNameFileLock.Lock()
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defer s.teamNameFileLock.Unlock()
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s.RemoveAll("teams")
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s.Mkdir("teams", 0755)
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// Write out all of the new team names
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for teamID, teamName := range teams {
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teamFilename := filepath.Join("teams", teamID)
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teamFile, err := s.Fs.OpenFile(teamFilename, os.O_CREATE|os.O_WRONLY|os.O_EXCL, 0644)
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if err != nil {
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return err
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}
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defer teamFile.Close()
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log.Printf("Setting team name [%s] in file %s", teamName, teamFilename)
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fmt.Fprintln(teamFile, teamName)
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teamFile.Close()
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}
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s.refreshNow <- true
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return nil
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}
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/* **************** Point log functions ************ */
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// PointsLog retrieves the current points log.
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func (s *State) PointsLog() award.List {
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s.pointsLock.RLock()
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ret := make(award.List, len(s.pointsLog))
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copy(ret, s.pointsLog)
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s.pointsLock.RUnlock()
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return ret
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}
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// AwardPoints gives points to teamID in category.
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// This doesn't attempt to ensure the teamID has been registered.
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// It first checks to make sure these are not duplicate points.
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// This is not a perfect check, you can trigger a race condition here.
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// It's just a courtesy to the user.
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// The update task makes sure we never have duplicate points in the log.
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func (s *State) AwardPoints(teamID, category string, points int) error {
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return s.awardPointsAtTime(time.Now().Unix(), teamID, category, points)
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}
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func (s *State) AwardPointsAtTime(teamID, category string, points int, when int64) error {
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return s.awardPointsAtTime(when, teamID, category, points)
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}
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func (s *State) awardPointsAtTime(when int64, teamID string, category string, points int) error {
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a := award.T{
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When: when,
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TeamID: teamID,
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Category: category,
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Points: points,
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}
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for _, e := range s.PointsLog() {
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if a.Equal(e) {
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return fmt.Errorf("points already awarded to this team in this category")
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}
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}
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//fn := fmt.Sprintf("%s-%s-%d", a.TeamID, a.Category, a.Points)
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fn := a.Filename()
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tmpfn := filepath.Join("points.tmp", fn)
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newfn := filepath.Join("points.new", fn)
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if err := afero.WriteFile(s, tmpfn, []byte(a.String()), 0644); err != nil {
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return err
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}
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if err := s.Rename(tmpfn, newfn); err != nil {
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return err
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}
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// State should be updated immediately
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s.refreshNow <- true
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return nil
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}
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func (s *State) PointExists(teamID string, cat string, points int) bool {
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for _, pointEntry := range s.pointsLog {
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if (pointEntry.TeamID == teamID) && (pointEntry.Category == cat) && (pointEntry.Points == points) {
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return true
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}
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}
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return false
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}
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func (s *State) PointExistsAtTime(teamID string, cat string, points int, when int64) bool {
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for _, pointEntry := range s.pointsLog {
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if (pointEntry.TeamID == teamID) && (pointEntry.Category == cat) && (pointEntry.Points == points) && (pointEntry.When == when) {
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return true
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}
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if (pointEntry.When > when) { // Since the points log is sorted, we can bail out earlier, if we see that current points are from later than our event
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return false
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}
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}
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return false
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}
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func (s *State) flushPointsLog(newPoints award.List) error {
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s.pointsLogFileLock.Lock()
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defer s.pointsLogFileLock.Unlock()
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logf, err := s.OpenFile("points.log", os.O_CREATE|os.O_WRONLY, 0644)
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defer logf.Close()
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if err != nil {
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return fmt.Errorf("Can't write to points log: %s", err)
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}
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for _, pointEntry := range newPoints {
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fmt.Fprintln(logf, pointEntry.String())
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}
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return nil
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}
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func (s *State) RemovePoints(teamID string, cat string, points int) error {
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s.pointsLock.Lock()
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defer s.pointsLock.Unlock()
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var newPoints award.List
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removed := false
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for _, pointEntry := range s.pointsLog {
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if (pointEntry.TeamID == teamID) && (pointEntry.Category == cat) && (pointEntry.Points == points) {
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removed = true
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} else {
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newPoints = append(newPoints, pointEntry)
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}
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}
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if (! removed) {
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return fmt.Errorf("Unable to find matching point entry")
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}
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err := s.flushPointsLog(newPoints)
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if err != nil {
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return err
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}
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s.refreshNow <- true
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return nil
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}
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func (s *State) RemovePointsAtTime(teamID string, cat string, points int, when int64) error {
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s.pointsLock.Lock()
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defer s.pointsLock.Unlock()
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var newPoints award.List
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removed := false
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for _, pointEntry := range s.pointsLog {
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if (pointEntry.TeamID == teamID) && (pointEntry.Category == cat) && (pointEntry.Points == points) && (pointEntry.When == when) {
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removed = true
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} else {
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newPoints = append(newPoints, pointEntry)
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}
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}
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if (! removed) {
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return fmt.Errorf("Unable to find matching point entry")
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}
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err := s.flushPointsLog(newPoints)
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if err != nil {
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return err
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}
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s.refreshNow <- true
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return nil
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}
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func (s *State) SetPoints(newPoints award.List) error {
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err := s.flushPointsLog(newPoints)
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if err != nil {
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return err
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}
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s.refreshNow <- true
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return nil
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}
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// collectPoints gathers up files in points.new/ and appends their contents to points.log,
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// removing each points.new/ file as it goes.
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func (s *State) collectPoints() {
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files, err := afero.ReadDir(s, "points.new")
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if err != nil {
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log.Print(err)
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return
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}
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for _, f := range files {
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filename := filepath.Join("points.new", f.Name())
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awardstr, err := afero.ReadFile(s, filename)
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if err != nil {
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log.Print("Opening new points: ", err)
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continue
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}
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awd, err := award.Parse(string(awardstr))
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if err != nil {
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log.Print("Can't parse award file ", filename, ": ", err)
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continue
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}
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duplicate := false
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s.pointsLock.RLock()
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for _, e := range s.pointsLog {
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if awd.Equal(e) {
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duplicate = true
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break
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}
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}
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s.pointsLock.RUnlock()
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if duplicate {
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log.Print("Skipping duplicate points: ", awd.String())
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} else {
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log.Print("Award: ", awd.String())
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{
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s.pointsLogFileLock.Lock()
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logf, err := s.OpenFile("points.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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log.Print("Can't append to points log: ", err)
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s.pointsLogFileLock.Unlock()
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return
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}
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fmt.Fprintln(logf, awd.String())
|
|
logf.Close()
|
|
s.pointsLogFileLock.Unlock()
|
|
}
|
|
|
|
// Stick this on the cache too
|
|
s.pointsLock.Lock()
|
|
s.pointsLog = append(s.pointsLog, awd)
|
|
s.pointsLock.Unlock()
|
|
}
|
|
|
|
if err := s.Remove(filename); err != nil {
|
|
log.Print("Unable to remove new points file: ", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ******************* Message functions *********** */
|
|
|
|
// Messages retrieves the current messages.
|
|
func (s *State) Messages() string {
|
|
return s.messages
|
|
}
|
|
|
|
// SetMessages sets the current message
|
|
func (s *State) SetMessages(message string) error {
|
|
s.messageFileLock.Lock()
|
|
defer s.messageFileLock.Unlock()
|
|
|
|
err := afero.WriteFile(s, "messages.html", []byte(message), 0600)
|
|
|
|
s.refreshNow <- true
|
|
|
|
return err
|
|
}
|
|
|
|
/* ***************** Other utilitity functions ******* */
|
|
|
|
func (s *State) maybeInitialize() {
|
|
// Are we supposed to re-initialize?
|
|
if _, err := s.Stat("initialized"); !os.IsNotExist(err) {
|
|
return
|
|
}
|
|
|
|
|
|
now := time.Now().UTC().Format(time.RFC3339)
|
|
log.Print("initialized file missing, re-initializing")
|
|
|
|
// Remove any extant control and state files
|
|
s.Remove("enabled")
|
|
s.Remove("hours.txt")
|
|
|
|
s.pointsLogFileLock.Lock()
|
|
s.Remove("points.log")
|
|
s.pointsLogFileLock.Unlock()
|
|
|
|
s.Remove("events.csv")
|
|
|
|
s.messageFileLock.Lock()
|
|
s.Remove("messages.html")
|
|
s.messageFileLock.Unlock()
|
|
|
|
s.Remove("mothd.log")
|
|
s.RemoveAll("points.tmp")
|
|
s.RemoveAll("points.new")
|
|
|
|
s.teamNameFileLock.Lock()
|
|
s.RemoveAll("teams")
|
|
s.Mkdir("teams", 0755)
|
|
s.teamNameFileLock.Unlock()
|
|
|
|
// Open log file
|
|
if err := s.reopenEventLog(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
s.LogEvent("init", "", "", "", 0)
|
|
|
|
// Make sure various subdirectories exist
|
|
s.Mkdir("points.tmp", 0755)
|
|
s.Mkdir("points.new", 0755)
|
|
|
|
// Preseed available team ids if file doesn't exist
|
|
var teamIDs []string
|
|
id := make([]byte, 8)
|
|
for i := 0; i < 100; i++ {
|
|
for i := range id {
|
|
char := rand.Intn(len(DistinguishableChars))
|
|
id[i] = DistinguishableChars[char]
|
|
}
|
|
teamIDs = append(teamIDs, string(id))
|
|
}
|
|
s.SetTeamIDs(teamIDs)
|
|
|
|
// Create some files
|
|
if f, err := s.Create("initialized"); err == nil {
|
|
fmt.Fprintln(f, "initialized: remove to re-initialize the contest.")
|
|
fmt.Fprintln(f)
|
|
fmt.Fprintln(f, "This instance was initialized at", now)
|
|
f.Close()
|
|
}
|
|
|
|
if f, err := s.Create("enabled"); err == nil {
|
|
fmt.Fprintln(f, "enabled: remove or rename to suspend the contest.")
|
|
f.Close()
|
|
}
|
|
|
|
if f, err := s.Create("hours.txt"); err == nil {
|
|
fmt.Fprintln(f, "# hours.txt: when the contest is enabled")
|
|
fmt.Fprintln(f, "#")
|
|
fmt.Fprintln(f, "# Enable: + timestamp")
|
|
fmt.Fprintln(f, "# Disable: - timestamp")
|
|
fmt.Fprintln(f, "#")
|
|
fmt.Fprintln(f, "# You can have multiple start/stop times.")
|
|
fmt.Fprintln(f, "# Whatever time is the most recent, wins.")
|
|
fmt.Fprintln(f, "# Times in the future are ignored.")
|
|
fmt.Fprintln(f)
|
|
fmt.Fprintln(f, "+", now)
|
|
fmt.Fprintln(f, "- 2519-10-31T00:00:00Z")
|
|
f.Close()
|
|
}
|
|
|
|
s.messageFileLock.Lock()
|
|
if f, err := s.Create("messages.html"); err == nil {
|
|
fmt.Fprintln(f, "<!-- messages.html: put client broadcast messages here. -->")
|
|
f.Close()
|
|
}
|
|
s.messageFileLock.Unlock()
|
|
|
|
if f, err := s.Create("points.log"); err == nil {
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
// LogEvent writes to the event log
|
|
func (s *State) LogEvent(event, participantID, teamID, cat string, points int, extra ...string) {
|
|
s.eventStream <- append(
|
|
[]string{
|
|
strconv.FormatInt(time.Now().Unix(), 10),
|
|
event,
|
|
participantID,
|
|
teamID,
|
|
cat,
|
|
strconv.Itoa(points),
|
|
},
|
|
extra...,
|
|
)
|
|
}
|
|
|
|
func (s *State) reopenEventLog() error {
|
|
if s.eventWriter != nil {
|
|
s.eventWriter.Flush()
|
|
}
|
|
if s.eventWriterFile != nil {
|
|
if err := s.eventWriterFile.Close(); err != nil {
|
|
// We're going to soldier on if Close returns error
|
|
log.Print(err)
|
|
}
|
|
}
|
|
eventWriterFile, err := s.OpenFile("events.csv", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
s.eventWriterFile = eventWriterFile
|
|
s.eventWriter = csv.NewWriter(s.eventWriterFile)
|
|
return nil
|
|
}
|
|
|
|
func (s *State) updateCaches() {
|
|
s.pointsLock.RLock()
|
|
defer s.pointsLock.RUnlock()
|
|
|
|
// Re-read the points log
|
|
{
|
|
s.pointsLogFileLock.RLock()
|
|
defer s.pointsLogFileLock.RUnlock()
|
|
|
|
if f, err := s.Open("points.log"); err != nil {
|
|
log.Println(err)
|
|
} else {
|
|
defer f.Close()
|
|
|
|
pointsLog := make(award.List, 0, 200)
|
|
scanner := bufio.NewScanner(f)
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
cur, err := award.Parse(line)
|
|
if err != nil {
|
|
log.Printf("Skipping malformed award line %s: %s", line, err)
|
|
continue
|
|
}
|
|
pointsLog = append(pointsLog, cur)
|
|
}
|
|
|
|
s.pointsLog = pointsLog
|
|
}
|
|
}
|
|
|
|
// Only do this if the teams directory has a newer mtime; directories with
|
|
// hundreds of team names can cause NFS I/O storms
|
|
{
|
|
s.teamNameLock.Lock()
|
|
defer s.teamNameLock.Unlock()
|
|
s.teamNameFileLock.RLock()
|
|
defer s.teamNameFileLock.RUnlock()
|
|
|
|
_, ismmfs := s.Fs.(*afero.MemMapFs) // Tests run so quickly that the time check isn't precise enough
|
|
if fi, err := s.Fs.Stat("teams"); err != nil {
|
|
log.Printf("Getting modification time of teams directory: %v", err)
|
|
} else if ismmfs || s.teamNamesLastChange.Before(fi.ModTime()) {
|
|
s.teamNamesLastChange = fi.ModTime()
|
|
|
|
// The compiler recognizes this as an optimization case
|
|
for k := range s.teamNames {
|
|
delete(s.teamNames, k)
|
|
}
|
|
|
|
teamsFs := afero.NewBasePathFs(s.Fs, "teams")
|
|
if dirents, err := afero.ReadDir(teamsFs, "."); err != nil {
|
|
log.Printf("Reading team ids: %v", err)
|
|
} else {
|
|
for _, dirent := range dirents {
|
|
teamID := dirent.Name()
|
|
if teamNameBytes, err := afero.ReadFile(teamsFs, teamID); err != nil {
|
|
log.Printf("Reading team %s: %v", teamID, err)
|
|
} else {
|
|
teamName := strings.TrimSpace(string(teamNameBytes))
|
|
s.teamNames[teamID] = teamName
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Re-read the messages file
|
|
{
|
|
s.messageFileLock.RLock()
|
|
defer s.messageFileLock.RUnlock()
|
|
|
|
if bMessages, err := afero.ReadFile(s, "messages.html"); err == nil {
|
|
s.messages = string(bMessages)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *State) refresh() {
|
|
s.maybeInitialize()
|
|
s.updateEnabled()
|
|
if s.Enabled {
|
|
s.collectPoints()
|
|
}
|
|
s.updateCaches()
|
|
}
|
|
|
|
// Maintain performs housekeeping on a State struct.
|
|
func (s *State) Maintain(updateInterval time.Duration) {
|
|
ticker := time.NewTicker(updateInterval)
|
|
s.refresh()
|
|
for {
|
|
select {
|
|
case msg := <-s.eventStream:
|
|
s.eventWriter.Write(msg)
|
|
s.eventWriter.Flush()
|
|
s.eventWriterFile.Sync()
|
|
case <-ticker.C:
|
|
s.refresh()
|
|
case <-s.refreshNow:
|
|
s.refresh()
|
|
}
|
|
}
|
|
}
|
|
|
|
// DevelState is a StateProvider for use by development servers
|
|
type DevelState struct {
|
|
StateProvider
|
|
}
|
|
|
|
// NewDevelState returns a new state object that can be used by the development server.
|
|
//
|
|
// The main thing this provides is the ability to register a team with any team ID.
|
|
// If a team ID is provided that wasn't recognized by the underlying StateProvider,
|
|
// it is associated with a team named "<devel:$ID>".
|
|
//
|
|
// This makes it possible to use the server without having to register a team.
|
|
func NewDevelState(sp StateProvider) *DevelState {
|
|
return &DevelState{sp}
|
|
}
|
|
|
|
// TeamName returns a valid team name for any teamID
|
|
//
|
|
// If one's registered, it will use it.
|
|
// Otherwise, it returns "<devel:$ID>"
|
|
func (ds *DevelState) TeamName(teamID string) (string, error) {
|
|
if name, err := ds.StateProvider.TeamName(teamID); err == nil {
|
|
return name, nil
|
|
}
|
|
return fmt.Sprintf("«devel:%s»", teamID), nil
|
|
}
|
|
|
|
// SetTeamName associates a team name with any teamID
|
|
//
|
|
// If the underlying StateProvider returns any sort of error,
|
|
// this returns ErrAlreadyRegistered,
|
|
// so the user can join a pre-existing team for whatever ID the provide.
|
|
func (ds *DevelState) SetTeamName(teamID, teamName string) error {
|
|
if err := ds.StateProvider.SetTeamName(teamID, teamName); err != nil {
|
|
return ErrAlreadyRegistered
|
|
}
|
|
return nil
|
|
}
|