2021-07-13 17:14:25 +00:00
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package worker
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2021-07-08 23:03:46 +00:00
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import (
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"context"
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"fmt"
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"os"
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"strconv"
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"time"
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"github.com/DataDog/datadog-go/statsd"
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"github.com/adjust/rmq/v4"
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"github.com/go-redis/redis/v8"
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"github.com/jackc/pgx/v4/pgxpool"
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"github.com/sideshow/apns2"
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"github.com/sideshow/apns2/payload"
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"github.com/sideshow/apns2/token"
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"github.com/sirupsen/logrus"
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2021-08-14 17:42:28 +00:00
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"github.com/christianselig/apollo-backend/internal/domain"
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2021-07-08 23:03:46 +00:00
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"github.com/christianselig/apollo-backend/internal/reddit"
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2021-08-14 17:42:28 +00:00
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"github.com/christianselig/apollo-backend/internal/repository"
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2021-07-08 23:03:46 +00:00
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)
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const (
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2021-07-13 17:14:25 +00:00
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backoff = 5 // How long we wait in between checking for notifications, in seconds
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2021-07-13 23:45:03 +00:00
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pollDuration = 5 * time.Millisecond
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2021-07-08 23:26:15 +00:00
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rate = 0.1
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2021-07-08 23:03:46 +00:00
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)
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2021-07-13 17:14:25 +00:00
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type notificationsWorker struct {
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2021-08-14 17:42:28 +00:00
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logger *logrus.Logger
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statsd *statsd.Client
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db *pgxpool.Pool
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redis *redis.Client
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queue rmq.Connection
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reddit *reddit.Client
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apns *token.Token
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2021-07-14 00:09:44 +00:00
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consumers int
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2021-08-14 17:42:28 +00:00
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accountRepo domain.AccountRepository
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deviceRepo domain.DeviceRepository
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2021-07-13 17:14:25 +00:00
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}
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2021-07-08 23:03:46 +00:00
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2021-07-14 00:09:44 +00:00
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func NewNotificationsWorker(logger *logrus.Logger, statsd *statsd.Client, db *pgxpool.Pool, redis *redis.Client, queue rmq.Connection, consumers int) Worker {
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2021-07-13 17:14:25 +00:00
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reddit := reddit.NewClient(
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2021-07-08 23:03:46 +00:00
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os.Getenv("REDDIT_CLIENT_ID"),
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os.Getenv("REDDIT_CLIENT_SECRET"),
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statsd,
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2021-07-14 00:09:44 +00:00
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consumers,
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2021-07-08 23:03:46 +00:00
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)
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2021-07-13 17:14:25 +00:00
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var apns *token.Token
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2021-07-08 23:03:46 +00:00
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{
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2021-07-23 00:32:37 +00:00
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authKey, err := token.AuthKeyFromFile(os.Getenv("APPLE_KEY_PATH"))
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2021-07-08 23:03:46 +00:00
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if err != nil {
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panic(err)
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}
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2021-07-13 17:14:25 +00:00
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apns = &token.Token{
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2021-07-08 23:03:46 +00:00
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AuthKey: authKey,
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KeyID: os.Getenv("APPLE_KEY_ID"),
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TeamID: os.Getenv("APPLE_TEAM_ID"),
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}
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}
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2021-07-13 17:14:25 +00:00
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return ¬ificationsWorker{
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logger,
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statsd,
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db,
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redis,
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queue,
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reddit,
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apns,
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2021-07-14 00:09:44 +00:00
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consumers,
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2021-08-14 17:42:28 +00:00
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repository.NewPostgresAccount(db),
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repository.NewPostgresDevice(db),
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2021-07-08 23:03:46 +00:00
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}
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2021-07-13 17:14:25 +00:00
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}
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2021-07-08 23:03:46 +00:00
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2021-07-14 00:09:44 +00:00
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func (nw *notificationsWorker) Start() error {
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2021-07-13 17:14:25 +00:00
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queue, err := nw.queue.OpenQueue("notifications")
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2021-07-08 23:03:46 +00:00
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if err != nil {
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2021-07-13 17:14:25 +00:00
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return err
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2021-07-08 23:03:46 +00:00
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}
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2021-07-13 17:14:25 +00:00
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nw.logger.WithFields(logrus.Fields{
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2021-07-14 00:09:44 +00:00
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"numConsumers": nw.consumers,
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2021-07-09 03:50:34 +00:00
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}).Info("starting up notifications worker")
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2021-07-09 01:28:43 +00:00
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2021-07-14 00:09:44 +00:00
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prefetchLimit := int64(nw.consumers * 2)
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2021-07-13 17:14:25 +00:00
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2021-07-08 23:03:46 +00:00
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if err := queue.StartConsuming(prefetchLimit, pollDuration); err != nil {
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2021-07-13 17:14:25 +00:00
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return err
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2021-07-08 23:03:46 +00:00
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}
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2021-07-09 03:50:34 +00:00
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host, _ := os.Hostname()
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2021-07-14 00:09:44 +00:00
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for i := 0; i < nw.consumers; i++ {
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2021-07-09 03:50:34 +00:00
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name := fmt.Sprintf("consumer %s-%d", host, i)
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2021-07-08 23:03:46 +00:00
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2021-07-13 17:14:25 +00:00
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consumer := NewNotificationsConsumer(nw, i)
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2021-07-08 23:03:46 +00:00
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if _, err := queue.AddConsumer(name, consumer); err != nil {
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2021-07-13 17:14:25 +00:00
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return err
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2021-07-08 23:03:46 +00:00
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}
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}
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2021-07-13 17:14:25 +00:00
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return nil
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}
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2021-07-08 23:03:46 +00:00
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2021-07-13 17:14:25 +00:00
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func (nw *notificationsWorker) Stop() {
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<-nw.queue.StopAllConsuming() // wait for all Consume() calls to finish
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2021-07-08 23:03:46 +00:00
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}
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2021-07-13 17:14:25 +00:00
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type notificationsConsumer struct {
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*notificationsWorker
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tag int
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2021-07-08 23:03:46 +00:00
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apnsSandbox *apns2.Client
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apnsProduction *apns2.Client
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}
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2021-07-13 17:14:25 +00:00
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func NewNotificationsConsumer(nw *notificationsWorker, tag int) *notificationsConsumer {
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return ¬ificationsConsumer{
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nw,
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2021-07-08 23:03:46 +00:00
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tag,
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2021-07-13 17:14:25 +00:00
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apns2.NewTokenClient(nw.apns),
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apns2.NewTokenClient(nw.apns).Production(),
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2021-07-08 23:03:46 +00:00
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}
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}
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2021-07-13 17:14:25 +00:00
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func (nc *notificationsConsumer) Consume(delivery rmq.Delivery) {
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2021-07-08 23:03:46 +00:00
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ctx := context.Background()
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2021-07-09 00:37:39 +00:00
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defer func() {
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2021-07-09 01:44:06 +00:00
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lockKey := fmt.Sprintf("locks:accounts:%s", delivery.Payload())
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2021-07-13 17:14:25 +00:00
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if err := nc.redis.Del(ctx, lockKey).Err(); err != nil {
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nc.logger.WithFields(logrus.Fields{
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2021-07-09 01:44:06 +00:00
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"lockKey": lockKey,
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"err": err,
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}).Error("failed to remove lock")
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}
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2021-07-09 00:37:39 +00:00
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}()
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2021-07-09 00:14:12 +00:00
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#id": delivery.Payload(),
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2021-07-08 23:03:46 +00:00
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}).Debug("starting job")
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id, err := strconv.ParseInt(delivery.Payload(), 10, 64)
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if err != nil {
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#id": delivery.Payload(),
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"err": err,
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2021-07-08 23:03:46 +00:00
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}).Error("failed to parse account ID")
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2021-09-25 13:19:42 +00:00
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_ = delivery.Reject()
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2021-07-08 23:03:46 +00:00
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return
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}
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2021-09-25 13:19:42 +00:00
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defer func() { _ = delivery.Ack() }()
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2021-07-09 03:50:34 +00:00
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2021-07-08 23:03:46 +00:00
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now := float64(time.Now().UnixNano()/int64(time.Millisecond)) / 1000
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2021-08-14 17:42:28 +00:00
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account, err := nc.accountRepo.GetByID(ctx, id)
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if err != nil {
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-09-25 16:56:01 +00:00
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"err": err,
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2021-07-08 23:03:46 +00:00
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}).Error("failed to fetch account from database")
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return
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}
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2021-08-14 18:15:05 +00:00
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previousLastCheckedAt := account.LastCheckedAt
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newAccount := (previousLastCheckedAt == 0)
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2021-08-14 17:42:28 +00:00
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account.LastCheckedAt = now
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if err = nc.accountRepo.Update(ctx, &account); err != nil {
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2021-07-13 17:58:52 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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"err": err,
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2021-07-13 17:58:52 +00:00
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}).Error("failed to update last_checked_at for account")
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return
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}
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2021-07-13 17:14:25 +00:00
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rac := nc.reddit.NewAuthenticatedClient(account.RefreshToken, account.AccessToken)
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2021-07-08 23:03:46 +00:00
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if account.ExpiresAt < int64(now) {
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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2021-07-08 23:03:46 +00:00
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}).Debug("refreshing reddit token")
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2021-07-08 23:26:15 +00:00
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2021-07-08 23:03:46 +00:00
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tokens, err := rac.RefreshTokens()
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if err != nil {
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2021-08-14 17:42:28 +00:00
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if err != reddit.ErrOauthRevoked {
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nc.logger.WithFields(logrus.Fields{
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"account#username": account.NormalizedUsername(),
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"err": err,
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}).Error("failed to refresh reddit tokens")
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return
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}
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err = nc.deleteAccount(ctx, account)
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if err != nil {
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nc.logger.WithFields(logrus.Fields{
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"account#username": account.NormalizedUsername(),
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"err": err,
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}).Error("failed to remove revoked account")
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return
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}
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2021-07-08 23:03:46 +00:00
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}
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2021-07-12 21:10:10 +00:00
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2021-07-13 18:47:50 +00:00
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// Update account
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account.AccessToken = tokens.AccessToken
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account.RefreshToken = tokens.RefreshToken
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account.ExpiresAt = int64(now + 3540)
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2021-07-12 21:10:10 +00:00
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// Refresh client
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2021-07-13 17:14:25 +00:00
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rac = nc.reddit.NewAuthenticatedClient(tokens.RefreshToken, tokens.AccessToken)
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2021-07-12 21:10:10 +00:00
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2021-08-14 17:42:28 +00:00
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if err = nc.accountRepo.Update(ctx, &account); err != nil {
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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"err": err,
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2021-07-08 23:03:46 +00:00
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}).Error("failed to update reddit tokens for account")
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return
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}
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}
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2021-07-13 19:08:39 +00:00
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// Only update delay on accounts we can actually check, otherwise it skews
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// the numbers too much.
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2021-08-14 17:42:28 +00:00
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if !newAccount {
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2021-08-14 18:15:05 +00:00
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latency := now - previousLastCheckedAt - float64(backoff)
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2021-09-25 13:19:42 +00:00
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_ = nc.statsd.Histogram("apollo.queue.delay", latency, []string{}, rate)
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2021-07-13 19:08:39 +00:00
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}
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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2021-07-08 23:03:46 +00:00
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}).Debug("fetching message inbox")
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2021-07-16 01:18:43 +00:00
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opts := []reddit.RequestOption{reddit.WithQuery("limit", "10")}
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if account.LastMessageID != "" {
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opts = append(opts, reddit.WithQuery("before", account.LastMessageID))
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}
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msgs, err := rac.MessageInbox(opts...)
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2021-07-08 23:03:46 +00:00
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if err != nil {
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2021-08-14 18:07:19 +00:00
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switch err {
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case reddit.ErrTimeout: // Don't log timeouts
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break
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case reddit.ErrOauthRevoked:
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err = nc.deleteAccount(ctx, account)
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if err != nil {
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nc.logger.WithFields(logrus.Fields{
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"account#username": account.NormalizedUsername(),
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"err": err,
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}).Error("failed to remove revoked account")
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return
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}
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2021-08-14 17:42:28 +00:00
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nc.logger.WithFields(logrus.Fields{
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"account#username": account.NormalizedUsername(),
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2021-08-14 18:07:19 +00:00
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}).Info("removed revoked account")
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default:
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2021-08-14 17:42:28 +00:00
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nc.logger.WithFields(logrus.Fields{
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"account#username": account.NormalizedUsername(),
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"err": err,
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2021-08-14 18:07:19 +00:00
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}).Error("failed to fetch message inbox")
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2021-08-14 17:42:28 +00:00
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}
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2021-07-08 23:03:46 +00:00
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return
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}
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2021-07-15 14:51:34 +00:00
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// Figure out where we stand
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2021-07-15 16:05:01 +00:00
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if msgs.Count == 0 {
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2021-07-15 14:51:34 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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2021-07-15 14:51:34 +00:00
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}).Debug("no new messages, bailing early")
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return
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}
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2021-07-13 17:14:25 +00:00
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nc.logger.WithFields(logrus.Fields{
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2021-08-14 17:42:28 +00:00
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"account#username": account.NormalizedUsername(),
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"count": msgs.Count,
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2021-07-08 23:03:46 +00:00
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}).Debug("fetched messages")
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2021-08-14 17:42:28 +00:00
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account.LastMessageID = msgs.Children[0].FullName()
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|
|
if err = nc.accountRepo.Update(ctx, &account); err != nil {
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:42:28 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
|
|
|
"err": err,
|
2021-07-09 03:29:53 +00:00
|
|
|
}).Error("failed to update last_message_id for account")
|
|
|
|
return
|
|
|
|
}
|
2021-07-08 23:03:46 +00:00
|
|
|
|
|
|
|
// Let's populate this with the latest message so we don't flood users with stuff
|
2021-08-14 17:42:28 +00:00
|
|
|
if newAccount {
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:42:28 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
2021-07-09 03:29:53 +00:00
|
|
|
}).Debug("populating first message ID to prevent spamming")
|
2021-07-08 23:03:46 +00:00
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2021-08-14 17:42:28 +00:00
|
|
|
devices, err := nc.deviceRepo.GetByAccountID(ctx, account.ID)
|
2021-07-08 23:03:46 +00:00
|
|
|
if err != nil {
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:42:28 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
|
|
|
"err": err,
|
2021-07-08 23:03:46 +00:00
|
|
|
}).Error("failed to fetch account devices")
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2021-07-15 14:51:34 +00:00
|
|
|
// Iterate backwards so we notify from older to newer
|
2021-07-15 16:05:01 +00:00
|
|
|
for i := msgs.Count - 1; i >= 0; i-- {
|
|
|
|
msg := msgs.Children[i]
|
2021-07-08 23:03:46 +00:00
|
|
|
notification := &apns2.Notification{}
|
|
|
|
notification.Topic = "com.christianselig.Apollo"
|
2021-07-15 16:05:01 +00:00
|
|
|
notification.Payload = payloadFromMessage(account, msg, msgs.Count)
|
2021-07-08 23:03:46 +00:00
|
|
|
|
|
|
|
for _, device := range devices {
|
|
|
|
notification.DeviceToken = device.APNSToken
|
2021-07-13 17:14:25 +00:00
|
|
|
client := nc.apnsProduction
|
2021-07-08 23:03:46 +00:00
|
|
|
if device.Sandbox {
|
2021-07-13 17:14:25 +00:00
|
|
|
client = nc.apnsSandbox
|
2021-07-08 23:03:46 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
res, err := client.Push(notification)
|
|
|
|
if err != nil {
|
2021-09-25 13:19:42 +00:00
|
|
|
_ = nc.statsd.Incr("apns.notification.errors", []string{}, 1)
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:51:18 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
|
|
|
"err": err,
|
|
|
|
"status": res.StatusCode,
|
|
|
|
"reason": res.Reason,
|
2021-07-08 23:03:46 +00:00
|
|
|
}).Error("failed to send notification")
|
|
|
|
} else {
|
2021-09-25 13:19:42 +00:00
|
|
|
_ = nc.statsd.Incr("apns.notification.sent", []string{}, 1)
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:51:18 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
|
|
|
"token": device.APNSToken,
|
2021-07-09 03:12:50 +00:00
|
|
|
}).Info("sent notification")
|
2021-07-08 23:03:46 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-07-16 01:02:52 +00:00
|
|
|
ev := fmt.Sprintf("Sent notification to /u/%s (x%d)", account.Username, msgs.Count)
|
2021-09-25 13:19:42 +00:00
|
|
|
_ = nc.statsd.SimpleEvent(ev, "")
|
2021-07-16 00:55:53 +00:00
|
|
|
|
2021-07-13 17:14:25 +00:00
|
|
|
nc.logger.WithFields(logrus.Fields{
|
2021-08-14 17:42:28 +00:00
|
|
|
"account#username": account.NormalizedUsername(),
|
2021-07-08 23:03:46 +00:00
|
|
|
}).Debug("finishing job")
|
|
|
|
}
|
|
|
|
|
2021-08-14 17:42:28 +00:00
|
|
|
func (nc *notificationsConsumer) deleteAccount(ctx context.Context, account domain.Account) error {
|
|
|
|
// Disassociate account from devices
|
|
|
|
devs, err := nc.deviceRepo.GetByAccountID(ctx, account.ID)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
for _, dev := range devs {
|
|
|
|
if err := nc.accountRepo.Disassociate(ctx, &account, &dev); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return nc.accountRepo.Delete(ctx, account.ID)
|
|
|
|
}
|
|
|
|
|
|
|
|
func payloadFromMessage(acct domain.Account, msg *reddit.Thing, badgeCount int) *payload.Payload {
|
2021-07-10 18:51:42 +00:00
|
|
|
postBody := msg.Body
|
|
|
|
if len(postBody) > 2000 {
|
|
|
|
postBody = msg.Body[:2000]
|
|
|
|
}
|
|
|
|
|
|
|
|
postTitle := msg.LinkTitle
|
|
|
|
if postTitle == "" {
|
|
|
|
postTitle = msg.Subject
|
|
|
|
}
|
|
|
|
if len(postTitle) > 75 {
|
|
|
|
postTitle = fmt.Sprintf("%s…", postTitle[0:75])
|
|
|
|
}
|
|
|
|
|
2021-07-12 18:36:08 +00:00
|
|
|
payload := payload.
|
|
|
|
NewPayload().
|
|
|
|
AlertBody(postBody).
|
|
|
|
AlertSummaryArg(msg.Author).
|
|
|
|
Badge(badgeCount).
|
|
|
|
Custom("account_id", acct.AccountID).
|
|
|
|
Custom("author", msg.Author).
|
|
|
|
Custom("destination_author", msg.Destination).
|
|
|
|
Custom("parent_id", msg.ParentID).
|
|
|
|
Custom("post_title", msg.LinkTitle).
|
|
|
|
Custom("subreddit", msg.Subreddit).
|
|
|
|
MutableContent().
|
|
|
|
Sound("traloop.wav")
|
2021-07-10 18:51:42 +00:00
|
|
|
|
|
|
|
switch {
|
|
|
|
case (msg.Kind == "t1" && msg.Type == "username_mention"):
|
|
|
|
title := fmt.Sprintf(`Mention in “%s”`, postTitle)
|
|
|
|
payload = payload.AlertTitle(title).Custom("type", "username")
|
|
|
|
|
|
|
|
pType, _ := reddit.SplitID(msg.ParentID)
|
|
|
|
if pType == "t1" {
|
|
|
|
payload = payload.Category("inbox-username-mention-context")
|
|
|
|
} else {
|
|
|
|
payload = payload.Category("inbox-username-mention-no-context")
|
|
|
|
}
|
|
|
|
|
|
|
|
payload = payload.Custom("subject", "comment").ThreadID("comment")
|
|
|
|
case (msg.Kind == "t1" && msg.Type == "post_reply"):
|
|
|
|
title := fmt.Sprintf(`%s to “%s”`, msg.Author, postTitle)
|
2021-07-12 18:36:08 +00:00
|
|
|
payload = payload.
|
|
|
|
AlertTitle(title).
|
|
|
|
Category("inbox-post-reply").
|
|
|
|
Custom("post_id", msg.ID).
|
|
|
|
Custom("subject", "comment").
|
|
|
|
Custom("type", "post").
|
|
|
|
ThreadID("comment")
|
2021-07-10 18:51:42 +00:00
|
|
|
case (msg.Kind == "t1" && msg.Type == "comment_reply"):
|
|
|
|
title := fmt.Sprintf(`%s in “%s”`, msg.Author, postTitle)
|
2021-07-12 19:51:02 +00:00
|
|
|
postID := reddit.PostIDFromContext(msg.Context)
|
2021-07-12 18:36:08 +00:00
|
|
|
payload = payload.
|
|
|
|
AlertTitle(title).
|
|
|
|
Category("inbox-comment-reply").
|
|
|
|
Custom("comment_id", msg.ID).
|
|
|
|
Custom("post_id", postID).
|
|
|
|
Custom("subject", "comment").
|
|
|
|
Custom("type", "comment").
|
|
|
|
ThreadID("comment")
|
2021-07-10 18:51:42 +00:00
|
|
|
case (msg.Kind == "t4"):
|
|
|
|
title := fmt.Sprintf(`Message from %s`, msg.Author)
|
2021-07-12 18:36:08 +00:00
|
|
|
payload = payload.
|
|
|
|
AlertTitle(title).
|
|
|
|
AlertSubtitle(postTitle).
|
|
|
|
Category("inbox-private-message").
|
|
|
|
Custom("type", "private-message")
|
2021-07-10 18:51:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return payload
|
|
|
|
}
|