/
stale.go
328 lines (318 loc) · 10.3 KB
/
stale.go
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package membership
import (
"context"
"errors"
"fmt"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/bwmarrin/discordgo"
"github.com/member-gentei/member-gentei/gentei/apis"
"github.com/member-gentei/member-gentei/gentei/ent"
"github.com/member-gentei/member-gentei/gentei/ent/guild"
"github.com/member-gentei/member-gentei/gentei/ent/predicate"
"github.com/member-gentei/member-gentei/gentei/ent/user"
"github.com/rs/zerolog/log"
"golang.org/x/oauth2"
"golang.org/x/sync/errgroup"
)
type CheckStaleOptions struct {
// StaleThreshold is used in a <= comparison to the last stored membership check time.
StaleThreshold time.Duration
// UserPredicates overrides predicates that consider a user's memberships stale.
UserPredicates []predicate.User
// AdditionalUserPredicates allows specifying additional constraints on user checks.
AdditionalUserPredicates []predicate.User
// NoSave skips saving UserMembership edges.
NoSave bool
// MaxWorkers sets the maximum amount of users to check and process simultaneously.
MaxWorkers int
// The maximum amount of users to check
TotalLimit int
}
var DefaultCheckStaleOptions = &CheckStaleOptions{
StaleThreshold: time.Hour * 12,
MaxWorkers: 100,
}
func CheckStale(
ctx context.Context,
db *ent.Client,
youtubeConfig *oauth2.Config,
options *CheckStaleOptions,
) error {
if options == nil {
options = DefaultCheckStaleOptions
}
staleThreshold := options.StaleThreshold
if options.StaleThreshold > 0 {
staleThreshold *= -1
}
staleUserPredicates := options.UserPredicates
if staleUserPredicates != nil {
log.Info().Msg("stale user predicates overriden")
} else {
staleUserPredicates = []predicate.User{
user.HasGuildsWith(
guild.HasYoutubeTalents(),
),
user.YoutubeIDNotNil(),
user.LastCheckLTE(time.Now().Add(staleThreshold)),
}
}
if options.AdditionalUserPredicates != nil {
staleUserPredicates = append(staleUserPredicates, options.AdditionalUserPredicates...)
log.Info().Msg("appending additional stale user predicates")
}
var (
totalStaleCount int
eg errgroup.Group
)
if options.MaxWorkers > 0 {
eg.SetLimit(options.MaxWorkers)
} else {
eg.SetLimit(DefaultCheckStaleOptions.MaxWorkers)
}
log.Info().Msg("beginning refresh of stale users")
for {
staleUserIDs, err := db.User.Query().
Where(staleUserPredicates...).
Limit(1000).
IDs(ctx)
if err != nil {
return err
}
if len(staleUserIDs) == 0 {
break
}
totalStaleCount += len(staleUserIDs)
for _, u := range staleUserIDs {
userID := u // capture
eg.Go(func() error {
// TODO: https://github.com/member-gentei/member-gentei/issues/92
results, err := CheckForUser(ctx, db, youtubeConfig, userID, nil)
if err != nil {
return fmt.Errorf("error checking memberships for user '%d': %w", userID, err)
}
if options.NoSave {
return nil
}
err = SaveMemberships(ctx, db, userID, results)
if err != nil {
return fmt.Errorf("error saving memberships for user '%d': %w", userID, err)
}
return nil
})
}
if err := eg.Wait(); err != nil {
return err
}
log.Info().Int("count", totalStaleCount).Msg("refreshed stale user batch of <=1000")
if options.TotalLimit > 0 && totalStaleCount > options.TotalLimit {
log.Info().Int("limit", options.TotalLimit).Int("count", totalStaleCount).Msg("reached CheckStale limit, returning early")
return nil
}
}
log.Info().Int("count", totalStaleCount).Msg("refreshed stale users")
return nil
}
// RefreshAllUserGuildEdges refreshes guild edges for all registered users. Returns a slice of userIDs that could not be refreshed and a count of all users.
func RefreshAllUserGuildEdges(ctx context.Context, db *ent.Client, discordConfig *oauth2.Config) ([]uint64, int, error) {
// refresh everyone's tokens
failed, _, total, err := refreshUserGuildEdgesWithPredicates(ctx, db, discordConfig, -1, nil)
return failed, total, err
}
// RefreshStaleUserGuildEdgesrefreshes guild edges for all registered users below a freshness threshold. Returns a slice of userIDs that could not be refreshed and a count of all users.
func RefreshStaleUserGuildEdges(ctx context.Context, db *ent.Client, discordConfig *oauth2.Config, staleThreshold time.Duration) ([]uint64, int, error) {
staleBefore := time.Now().Add(-staleThreshold)
failed, _, total, err := refreshUserGuildEdgesWithPredicates(ctx, db, discordConfig, -1, user.LastCheckLT(staleBefore))
return failed, total, err
}
// refreshUserGuildEdgesWithPredicates is the inner implementation of all stale refreshes. Returns a slice of userIDs that could not be refreshed, a slice of those that succeeded, and a count of all users.
func refreshUserGuildEdgesWithPredicates(ctx context.Context, db *ent.Client, discordConfig *oauth2.Config, max int, predicates ...predicate.User) ([]uint64, []uint64, int, error) {
var (
userTokensInvalid []uint64
userTokensValid []uint64
totalCount int
after uint64
userTokensMutex = &sync.Mutex{}
)
totalCount, err := db.User.Query().
Where(predicates...).
Count(ctx)
if err != nil {
return nil, nil, 0, fmt.Errorf("error getting total count of stale users: %w", err)
}
log.Info().Int("total", totalCount).Msg("current stale user count")
const defaultPageSize = 400
pageSize := defaultPageSize
if max > 0 && max < defaultPageSize {
pageSize = max
}
processedCounter := &atomic.Int64{}
for {
userIDs, err := db.User.Query().
Where(append(
predicates,
user.IDGT(after),
)...).
Order(ent.Asc(user.FieldID)).
Limit(pageSize).
IDs(ctx)
if err != nil {
return nil, nil, 0, fmt.Errorf("error paginating user IDs: %w", err)
}
var eGroup errgroup.Group
eGroup.SetLimit(10) // I set this to 100 one time and got my airbnb IP banned, so don't go that high
for i := range userIDs {
userID := userIDs[i]
eGroup.Go(func() error {
defer processedCounter.Add(1)
logger := log.With().Str("userID", strconv.FormatUint(userID, 10)).Logger()
logger.Debug().Msg("getting Discord token for refresh")
ts, err := apis.GetRefreshingDiscordTokenSource(ctx, db, discordConfig, userID)
if err != nil {
logger.Warn().Err(err).Msg("error creating Discord TokenSource, skipping")
return nil
}
token, err := ts.Token()
if err != nil {
if strings.Contains(err.Error(), "429") {
logger.Warn().Err(err).Msg("Encountered 429 for Discord TokenSource, skipping")
return nil
}
logger.Warn().Err(err).Msg("error getting Discord token for user, will revoke all roles")
userTokensMutex.Lock()
userTokensInvalid = append(userTokensInvalid, userID)
userTokensMutex.Unlock()
return nil
}
logger.Debug().Msg("refreshing UserGuildEdges")
added, removed, err := RefreshUserGuildEdges(ctx, db, token, userID)
if err != nil {
var restErr *discordgo.RESTError
if errors.As(err, &restErr) {
if restErr.Response.StatusCode >= 500 {
logger.Warn().Err(err).Msg("Discord API server error, skipping user")
} else {
logger.Warn().Err(err).Msg("error using Discord token for user, will revoke all roles")
userTokensMutex.Lock()
userTokensInvalid = append(userTokensInvalid, userID)
userTokensMutex.Unlock()
}
return nil
}
if errors.Is(err, context.DeadlineExceeded) || strings.Contains(err.Error(), "Client.Timeout exceeded while awaiting headers") {
logger.Warn().Err(err).Msg("skipping refresh for user due to API request timeout")
return nil
}
logger.Err(err).Msg("error refreshing guilds for user")
return err
}
if len(added)+len(removed) > 0 {
logger.Info().
Strs("addedGuildIDs", uints64ToStrs(added)).
Strs("removedGuildIDs", uints64ToStrs(removed)).
Msg("refreshed with changes")
} else {
logger.Debug().Int64("progress", processedCounter.Load()+1).Msg("refreshed with no changes")
}
userTokensMutex.Lock()
userTokensValid = append(userTokensValid, userID)
userTokensMutex.Unlock()
return nil
})
}
if err = eGroup.Wait(); err != nil {
return userTokensInvalid, userTokensValid, totalCount, err
}
if len(userIDs) == 0 {
log.Debug().Msg("no users to refresh, breaking out early")
break
}
after = userIDs[len(userIDs)-1]
log.Info().
Int64("count", processedCounter.Load()).
Int("total", totalCount).
Msg("refresh progress")
if len(userIDs) < pageSize {
break
}
if max > 0 && int(processedCounter.Load()) >= max {
break
}
}
if len(userTokensInvalid) > 0 {
log.Info().Int("count", len(userTokensInvalid)).
Msg("failed to refresh some Discord tokens")
}
return userTokensInvalid, userTokensValid, totalCount, nil
}
// Refreshes guilds for all registered users.
func RefreshUserGuildEdges(
ctx context.Context,
db *ent.Client,
token *oauth2.Token,
userID uint64,
) (added []uint64, removed []uint64, err error) {
svc, err := discordgo.New(fmt.Sprintf("Bearer %s", token.AccessToken))
if err != nil {
err = fmt.Errorf("error creating discordgo.Session: %w", err)
return
}
userGuilds, err := svc.UserGuilds(0, "", "")
if err != nil {
err = fmt.Errorf("error getting UserGuilds: %w", err)
return
}
guildIDs := make([]uint64, len(userGuilds))
for i, dg := range userGuilds {
guildID, convErr := strconv.ParseUint(dg.ID, 10, 64)
if convErr != nil {
err = convErr
return
}
guildIDs[i] = guildID
}
// add guilds
addGuildIDs, err := db.Guild.Query().
Where(
guild.IDIn(guildIDs...),
guild.Not(
guild.HasMembersWith(user.ID(userID)),
),
).
IDs(ctx)
if err != nil {
err = fmt.Errorf("error getting Guilds to add: %w", err)
return
}
// remove guilds
removePredicates := []predicate.Guild{
guild.HasMembersWith(user.ID(userID)),
}
if len(guildIDs) > 0 {
removePredicates = append(removePredicates, guild.IDNotIn(guildIDs...))
}
removeGuildIDs, err := db.Guild.Query().
Where(removePredicates...).
IDs(ctx)
if err != nil {
err = fmt.Errorf("error getting Guilds to remove: %w", err)
return
}
// actually do it
err = db.User.UpdateOneID(userID).
AddGuildIDs(addGuildIDs...).
RemoveGuildIDs(removeGuildIDs...).
Exec(ctx)
return addGuildIDs, removeGuildIDs, err
}
func uints64ToStrs(input []uint64) []string {
output := make([]string, len(input))
for i, n := range input {
output[i] = strconv.FormatUint(n, 10)
}
return output
}