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tweeter_index.go
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tweeter_index.go
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package es
import (
"context"
"database/sql"
"encoding/json"
"fmt"
"strings"
"sync/atomic"
"github.com/Bnei-Baruch/sqlboiler/queries/qm"
log "github.com/Sirupsen/logrus"
"github.com/pkg/errors"
"gopkg.in/olivere/elastic.v6"
"github.com/Bnei-Baruch/archive-backend/consts"
"github.com/Bnei-Baruch/archive-backend/mdb/models"
"github.com/Bnei-Baruch/archive-backend/utils"
)
func MakeTweeterIndex(namespace string, indexDate string, db *sql.DB, esc *elastic.Client) *TweeterIndex {
ti := new(TweeterIndex)
ti.resultType = consts.ES_RESULT_TYPE_TWEETS
ti.baseName = consts.ES_RESULTS_INDEX
ti.namespace = namespace
ti.indexDate = indexDate
ti.db = db
ti.esc = esc
return ti
}
type TweeterIndex struct {
BaseIndex
Progress uint64
}
func (index *TweeterIndex) userIdToLanguageMapping() map[int]string {
return map[int]string{
1: consts.LANG_RUSSIAN,
2: consts.LANG_HEBREW,
3: consts.LANG_ENGLISH,
4: consts.LANG_SPANISH,
}
}
func (index *TweeterIndex) ReindexAll() error {
log.Info("TweeterIndex.Reindex All.")
if _, err := index.RemoveFromIndexQuery(index.FilterByResultTypeQuery(consts.ES_RESULT_TYPE_TWEETS)); err != nil {
return err
}
return index.addToIndexSql("1=1") // SQL to always match any tweet
}
func (index *TweeterIndex) Update(scope Scope) error {
log.Debugf("TweeterIndex.Update - Scope: %+v.", scope)
removed, err := index.removeFromIndex(scope)
if err != nil {
return err
}
return index.addToIndex(scope, removed)
}
func (index *TweeterIndex) addToIndex(scope Scope, removedIDs []string) error {
ids := removedIDs
if scope.TweetTID != "" {
ids = append(ids, scope.TweetTID)
}
quoted := make([]string, len(ids))
for i, id := range ids {
quoted[i] = fmt.Sprintf("'%s'", id)
}
sqlScope := fmt.Sprintf("t.twitter_id IN (%s)", strings.Join(quoted, ","))
if err := index.addToIndexSql(sqlScope); err != nil {
return errors.Wrap(err, "tweets index addToIndex addToIndexSql")
}
return nil
}
func (index *TweeterIndex) removeFromIndex(scope Scope) ([]string, error) {
if scope.TweetTID != "" {
elasticScope := index.FilterByResultTypeQuery(consts.ES_RESULT_TYPE_TWEETS).
Filter(elastic.NewTermsQuery("mdb_uid", scope.TweetTID))
return index.RemoveFromIndexQuery(elasticScope)
}
// Nothing to remove.
return []string{}, nil
}
func (index *TweeterIndex) bulkIndexTweets(bulk OffsetLimitJob, sqlScope string) error {
var tweets []*mdbmodels.TwitterTweet
err := mdbmodels.NewQuery(index.db,
qm.From("twitter_tweets as t"),
qm.Where(sqlScope),
qm.OrderBy("id"), // Required for same order results in each query
qm.Offset(bulk.Offset),
qm.Limit(bulk.Limit)).Bind(&tweets)
if err != nil {
log.Errorf("bulkIndexTweets error at offset %d. error: %v", bulk.Offset, err)
return errors.Wrap(err, "Fetch tweetsfrom mdb.")
}
log.Infof("Adding %d tweets (offset %d, total %d).", len(tweets), bulk.Offset, bulk.Total)
for _, tweet := range tweets {
if err := index.indexTweet(tweet); err != nil {
log.Errorf("indexTweet error at tweet id %d. error: %v", tweet.ID, err)
return err
}
}
return nil
}
func (index *TweeterIndex) addToIndexSql(sqlScope string) error {
var count int
if err := mdbmodels.NewQuery(index.db,
qm.Select("count(id)"),
qm.From("twitter_tweets as t"),
qm.Where(sqlScope)).QueryRow().Scan(&count); err != nil {
return err
}
log.Debugf("Tweeter Index - Adding %d tweets. Scope: %s.", count, sqlScope)
limit := 1000
tasks := make(chan OffsetLimitJob, (count/limit + limit))
errors := make(chan error, 300)
doneAdding := make(chan bool, 1)
tasksCount := 0
go func() {
offset := 0
for offset < int(count) {
tasks <- OffsetLimitJob{offset, limit, count}
tasksCount++
offset += limit
}
close(tasks)
doneAdding <- true
}()
for w := 1; w <= 10; w++ {
go func(tasks <-chan OffsetLimitJob, errs chan<- error) {
for task := range tasks {
errors <- index.bulkIndexTweets(task, sqlScope)
}
}(tasks, errors)
}
<-doneAdding
for a := 1; a <= tasksCount; a++ {
e := <-errors
if e != nil {
log.Errorf("tasksCount loop error: %v", e)
return e
}
}
return nil
}
func (index *TweeterIndex) indexTweet(mdbTweet *mdbmodels.TwitterTweet) error {
langMapping := index.userIdToLanguageMapping()
tweetLang := langMapping[int(mdbTweet.UserID)]
title := ""
if mdbTweet.Raw.Valid {
var raw interface{}
err := json.Unmarshal(mdbTweet.Raw.JSON, &raw)
if err != nil {
return errors.Wrapf(err, "Cannot unmarshal raw from tweet id %d", mdbTweet.ID)
}
r := raw.(map[string]interface{})
if val, ok := r["text"]; ok {
title = val.(string)
}
}
tweet := Result{
ResultType: consts.ES_RESULT_TYPE_TWEETS,
MDB_UID: mdbTweet.TwitterID, // TwitterID is taken instead of ID
TypedUids: []string{keyValue("tweet", mdbTweet.TwitterID)},
FilterValues: []string{keyValue("content_type", consts.SCT_TWEET), keyValue(consts.FILTER_LANGUAGE, tweetLang)},
Title: title,
TitleSuggest: Suffixes(title),
EffectiveDate: &utils.Date{Time: mdbTweet.TweetAt},
Content: mdbTweet.FullText,
}
indexName := index.indexName(tweetLang)
vBytes, err := json.Marshal(tweet)
if err != nil {
return err
}
log.Debugf("Tweets Index - Add tweet %s to index %s", string(vBytes), indexName)
resp, err := index.esc.Index().
Index(indexName).
Type("result").
BodyJson(tweet).
Do(context.TODO())
if err != nil {
return errors.Wrapf(err, "Index tweet %s %d", indexName, mdbTweet.ID)
}
if resp.Result != "created" {
return errors.Errorf("Not created: tweet %s %d", indexName, mdbTweet.ID)
}
atomic.AddUint64(&index.Progress, 1)
progress := atomic.LoadUint64(&index.Progress)
if progress%10 == 0 {
log.Debugf("Progress tweet %d", progress)
}
return nil
}