mirror of
https://github.com/christianselig/apollo-backend
synced 2024-11-14 07:57:44 +00:00
451 lines
11 KiB
Go
451 lines
11 KiB
Go
package worker
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"math/rand"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/DataDog/datadog-go/statsd"
|
|
"github.com/adjust/rmq/v4"
|
|
"github.com/go-redis/redis/v8"
|
|
"github.com/jackc/pgx/v4/pgxpool"
|
|
"github.com/sideshow/apns2"
|
|
"github.com/sideshow/apns2/payload"
|
|
"github.com/sideshow/apns2/token"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"github.com/christianselig/apollo-backend/internal/domain"
|
|
"github.com/christianselig/apollo-backend/internal/reddit"
|
|
"github.com/christianselig/apollo-backend/internal/repository"
|
|
)
|
|
|
|
type subredditsWorker struct {
|
|
logger *logrus.Logger
|
|
statsd *statsd.Client
|
|
db *pgxpool.Pool
|
|
redis *redis.Client
|
|
queue rmq.Connection
|
|
reddit *reddit.Client
|
|
apns *token.Token
|
|
|
|
consumers int
|
|
|
|
accountRepo domain.AccountRepository
|
|
deviceRepo domain.DeviceRepository
|
|
subredditRepo domain.SubredditRepository
|
|
watcherRepo domain.WatcherRepository
|
|
}
|
|
|
|
const (
|
|
subredditNotificationTitleFormat = "📣 \u201c%s\u201d Watcher"
|
|
subredditNotificationBodyFormat = "r/%s: \u201c%s\u201d"
|
|
)
|
|
|
|
func NewSubredditsWorker(logger *logrus.Logger, statsd *statsd.Client, db *pgxpool.Pool, redis *redis.Client, queue rmq.Connection, consumers int) Worker {
|
|
reddit := reddit.NewClient(
|
|
os.Getenv("REDDIT_CLIENT_ID"),
|
|
os.Getenv("REDDIT_CLIENT_SECRET"),
|
|
statsd,
|
|
redis,
|
|
consumers,
|
|
)
|
|
|
|
var apns *token.Token
|
|
{
|
|
authKey, err := token.AuthKeyFromFile(os.Getenv("APPLE_KEY_PATH"))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
apns = &token.Token{
|
|
AuthKey: authKey,
|
|
KeyID: os.Getenv("APPLE_KEY_ID"),
|
|
TeamID: os.Getenv("APPLE_TEAM_ID"),
|
|
}
|
|
}
|
|
|
|
return &subredditsWorker{
|
|
logger,
|
|
statsd,
|
|
db,
|
|
redis,
|
|
queue,
|
|
reddit,
|
|
apns,
|
|
consumers,
|
|
|
|
repository.NewPostgresAccount(db),
|
|
repository.NewPostgresDevice(db),
|
|
repository.NewPostgresSubreddit(db),
|
|
repository.NewPostgresWatcher(db),
|
|
}
|
|
}
|
|
|
|
func (sw *subredditsWorker) Start() error {
|
|
queue, err := sw.queue.OpenQueue("subreddits")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sw.logger.WithFields(logrus.Fields{
|
|
"numConsumers": sw.consumers,
|
|
}).Info("starting up subreddits worker")
|
|
|
|
prefetchLimit := int64(sw.consumers * 2)
|
|
|
|
if err := queue.StartConsuming(prefetchLimit, pollDuration); err != nil {
|
|
return err
|
|
}
|
|
|
|
host, _ := os.Hostname()
|
|
|
|
for i := 0; i < sw.consumers; i++ {
|
|
name := fmt.Sprintf("consumer %s-%d", host, i)
|
|
|
|
consumer := NewSubredditsConsumer(sw, i)
|
|
if _, err := queue.AddConsumer(name, consumer); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (sw *subredditsWorker) Stop() {
|
|
<-sw.queue.StopAllConsuming() // wait for all Consume() calls to finish
|
|
}
|
|
|
|
type subredditsConsumer struct {
|
|
*subredditsWorker
|
|
tag int
|
|
|
|
apnsSandbox *apns2.Client
|
|
apnsProduction *apns2.Client
|
|
}
|
|
|
|
func NewSubredditsConsumer(sw *subredditsWorker, tag int) *subredditsConsumer {
|
|
return &subredditsConsumer{
|
|
sw,
|
|
tag,
|
|
apns2.NewTokenClient(sw.apns),
|
|
apns2.NewTokenClient(sw.apns).Production(),
|
|
}
|
|
}
|
|
|
|
func (sc *subredditsConsumer) Consume(delivery rmq.Delivery) {
|
|
ctx := context.Background()
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": delivery.Payload(),
|
|
}).Debug("starting job")
|
|
|
|
id, err := strconv.ParseInt(delivery.Payload(), 10, 64)
|
|
if err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": delivery.Payload(),
|
|
"err": err,
|
|
}).Error("failed to parse subreddit ID")
|
|
|
|
_ = delivery.Reject()
|
|
return
|
|
}
|
|
|
|
defer func() { _ = delivery.Ack() }()
|
|
|
|
subreddit, err := sc.subredditRepo.GetByID(ctx, id)
|
|
if err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"err": err,
|
|
}).Error("failed to fetch subreddit from database")
|
|
return
|
|
}
|
|
|
|
watchers, err := sc.watcherRepo.GetBySubredditID(ctx, subreddit.ID)
|
|
if err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"err": err,
|
|
}).Error("failed to fetch watchers from database")
|
|
return
|
|
}
|
|
|
|
if len(watchers) == 0 {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
}).Debug("no watchers for subreddit, finishing job")
|
|
return
|
|
}
|
|
|
|
threshold := float64(time.Now().AddDate(0, 0, -1).UTC().Unix())
|
|
posts := []*reddit.Thing{}
|
|
before := ""
|
|
finished := false
|
|
seenPosts := map[string]bool{}
|
|
|
|
// Load 500 newest posts
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
}).Debug("loading up to 500 new posts")
|
|
|
|
for page := 0; page < 5; page++ {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"page": page,
|
|
}).Debug("loading new posts")
|
|
|
|
i := rand.Intn(len(watchers))
|
|
watcher := watchers[i]
|
|
|
|
acc, _ := sc.accountRepo.GetByID(ctx, watcher.AccountID)
|
|
rac := sc.reddit.NewAuthenticatedClient(acc.AccountID, acc.RefreshToken, acc.AccessToken)
|
|
|
|
sps, err := rac.SubredditNew(
|
|
subreddit.Name,
|
|
reddit.WithQuery("before", before),
|
|
reddit.WithQuery("limit", "100"),
|
|
)
|
|
|
|
if err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"err": err,
|
|
}).Error("failed to fetch new posts")
|
|
continue
|
|
}
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"count": sps.Count,
|
|
"page": page,
|
|
}).Debug("loaded new posts for page")
|
|
|
|
// If it's empty, we're done
|
|
if sps.Count == 0 {
|
|
break
|
|
}
|
|
|
|
// If we don't have 100 posts, we're going to be done
|
|
if sps.Count < 100 {
|
|
finished = true
|
|
}
|
|
|
|
for _, post := range sps.Children {
|
|
if post.CreatedAt < threshold {
|
|
finished = true
|
|
break
|
|
}
|
|
|
|
if _, ok := seenPosts[post.ID]; !ok {
|
|
posts = append(posts, post)
|
|
seenPosts[post.ID] = true
|
|
}
|
|
}
|
|
|
|
if finished {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"page": page,
|
|
}).Debug("reached date threshold")
|
|
break
|
|
}
|
|
}
|
|
|
|
// Load hot posts
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
}).Debug("loading hot posts")
|
|
{
|
|
i := rand.Intn(len(watchers))
|
|
watcher := watchers[i]
|
|
|
|
acc, _ := sc.accountRepo.GetByID(ctx, watcher.AccountID)
|
|
rac := sc.reddit.NewAuthenticatedClient(acc.AccountID, acc.RefreshToken, acc.AccessToken)
|
|
sps, err := rac.SubredditHot(
|
|
subreddit.Name,
|
|
reddit.WithQuery("limit", "100"),
|
|
)
|
|
|
|
if err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"err": err,
|
|
}).Error("failed to fetch hot posts")
|
|
} else {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"count": sps.Count,
|
|
}).Debug("loaded hot posts")
|
|
|
|
for _, post := range sps.Children {
|
|
if post.CreatedAt < threshold {
|
|
break
|
|
}
|
|
if _, ok := seenPosts[post.ID]; !ok {
|
|
posts = append(posts, post)
|
|
seenPosts[post.ID] = true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"count": len(posts),
|
|
}).Debug("checking posts for hits")
|
|
for _, post := range posts {
|
|
lowcaseAuthor := strings.ToLower(post.Author)
|
|
lowcaseTitle := strings.ToLower(post.Title)
|
|
lowcaseFlair := strings.ToLower(post.Flair)
|
|
lowcaseDomain := strings.ToLower(post.URL)
|
|
|
|
notifs := []domain.Watcher{}
|
|
|
|
for _, watcher := range watchers {
|
|
// Make sure we only alert on posts created after the search
|
|
if watcher.CreatedAt > post.CreatedAt {
|
|
continue
|
|
}
|
|
|
|
matched := true
|
|
|
|
if watcher.Author != "" && lowcaseAuthor != watcher.Author {
|
|
matched = false
|
|
}
|
|
|
|
if watcher.Upvotes > 0 && post.Score < watcher.Upvotes {
|
|
matched = false
|
|
}
|
|
|
|
if watcher.Keyword != "" && !strings.Contains(lowcaseTitle, watcher.Keyword) {
|
|
matched = false
|
|
}
|
|
|
|
if watcher.Flair != "" && !strings.Contains(lowcaseFlair, watcher.Flair) {
|
|
matched = false
|
|
}
|
|
|
|
if watcher.Domain != "" && !strings.Contains(lowcaseDomain, watcher.Domain) {
|
|
matched = false
|
|
}
|
|
|
|
if !matched {
|
|
continue
|
|
}
|
|
|
|
lockKey := fmt.Sprintf("watcher:%d:%s", watcher.DeviceID, post.ID)
|
|
notified, _ := sc.redis.Get(ctx, lockKey).Bool()
|
|
|
|
if notified {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"watcher#id": watcher.ID,
|
|
"post#id": post.ID,
|
|
}).Debug("already notified, skipping")
|
|
|
|
continue
|
|
}
|
|
|
|
if err := sc.watcherRepo.IncrementHits(ctx, watcher.ID); err != nil {
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"watcher#id": watcher.ID,
|
|
"err": err,
|
|
}).Error("could not increment hits")
|
|
return
|
|
}
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"watcher#id": watcher.ID,
|
|
"post#id": post.ID,
|
|
}).Debug("got a hit")
|
|
|
|
sc.redis.SetEX(ctx, lockKey, true, 24*time.Hour)
|
|
notifs = append(notifs, watcher)
|
|
}
|
|
|
|
if len(notifs) == 0 {
|
|
continue
|
|
}
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
"post#id": post.ID,
|
|
"count": len(notifs),
|
|
}).Debug("got hits for post")
|
|
|
|
payload := payloadFromPost(post)
|
|
|
|
for _, watcher := range notifs {
|
|
title := fmt.Sprintf(subredditNotificationTitleFormat, watcher.Label)
|
|
payload.AlertTitle(title)
|
|
|
|
body := fmt.Sprintf(subredditNotificationBodyFormat, subreddit.Name, post.Title)
|
|
payload.AlertBody(body)
|
|
|
|
notification := &apns2.Notification{}
|
|
notification.Topic = "com.christianselig.Apollo"
|
|
notification.DeviceToken = watcher.Device.APNSToken
|
|
notification.Payload = payload
|
|
|
|
client := sc.apnsProduction
|
|
if watcher.Device.Sandbox {
|
|
client = sc.apnsSandbox
|
|
}
|
|
|
|
res, err := client.Push(notification)
|
|
if err != nil || !res.Sent() {
|
|
_ = sc.statsd.Incr("apns.notification.errors", []string{}, 1)
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"device#id": watcher.Device.ID,
|
|
"err": err,
|
|
"status": res.StatusCode,
|
|
"reason": res.Reason,
|
|
}).Error("failed to send notification")
|
|
} else {
|
|
_ = sc.statsd.Incr("apns.notification.sent", []string{}, 1)
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"device#id": watcher.Device.ID,
|
|
"device#token": watcher.Device.APNSToken,
|
|
}).Info("sent notification")
|
|
}
|
|
}
|
|
}
|
|
|
|
sc.logger.WithFields(logrus.Fields{
|
|
"subreddit#id": subreddit.ID,
|
|
"subreddit#name": subreddit.Name,
|
|
}).Debug("finishing job")
|
|
}
|
|
|
|
func payloadFromPost(post *reddit.Thing) *payload.Payload {
|
|
payload := payload.
|
|
NewPayload().
|
|
AlertSummaryArg(post.Subreddit).
|
|
Category("post-watch").
|
|
Custom("post_title", post.Title).
|
|
Custom("post_id", post.ID).
|
|
Custom("subreddit", post.Subreddit).
|
|
Custom("author", post.Author).
|
|
Custom("post_age", post.CreatedAt).
|
|
MutableContent().
|
|
Sound("traloop.wav")
|
|
|
|
return payload
|
|
}
|