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user_embedding_dssm_o2o_trigger.go
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user_embedding_dssm_o2o_trigger.go
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package berecall
import (
gocontext "context"
"encoding/base64"
"encoding/json"
"fmt"
"strings"
"sync"
"time"
"github.com/alibaba/pairec/v2/service/rank"
"github.com/alibaba/pairec/v2/context"
plog "github.com/alibaba/pairec/v2/log"
"github.com/alibaba/pairec/v2/module"
"github.com/alibaba/pairec/v2/recconf"
"github.com/alibaba/pairec/v2/service/feature"
"github.com/alibaba/pairec/v2/utils"
)
type UserEmbeddingDssmO2OTrigger struct {
useCacheFeatures bool
seqDelimiter string
multiValueDelimiter string
BizName string
RecallName string
BeName string
o2oType string
features []*feature.Feature
featureConsistencyJobService *rank.FeatureConsistencyJobService
}
func NewUserEmbeddingDssmO2OTrigger(config *recconf.UserEmbeddingO2OTriggerConfig) *UserEmbeddingDssmO2OTrigger {
trigger := &UserEmbeddingDssmO2OTrigger{
seqDelimiter: ";",
multiValueDelimiter: "\u001D",
featureConsistencyJobService: new(rank.FeatureConsistencyJobService),
BeName: config.BeName,
RecallName: config.RecallName,
BizName: config.BizName,
o2oType: rank.DssmO2o,
}
var features []*feature.Feature
for _, conf := range config.UserFeatureConfs {
if conf.FeatureDaoConf.LoadFromCacheFeaturesName != "" {
trigger.useCacheFeatures = true
}
f := feature.LoadWithConfig(conf)
features = append(features, f)
}
trigger.features = features
if config.SeqDelimiter != "" {
trigger.seqDelimiter = config.SeqDelimiter
}
if config.MultiValueDelimiter != "" {
trigger.multiValueDelimiter = config.MultiValueDelimiter
}
return trigger
}
func NewUserEmbeddingMindO2OTrigger(config *recconf.UserEmbeddingO2OTriggerConfig) *UserEmbeddingDssmO2OTrigger {
trigger := NewUserEmbeddingDssmO2OTrigger(config)
trigger.o2oType = rank.MindO2o
return trigger
}
func (t *UserEmbeddingDssmO2OTrigger) loadUserFeatures(user *module.User, context *context.RecommendContext) {
var wg sync.WaitGroup
for _, fea := range t.features {
wg.Add(1)
go func(fea *feature.Feature) {
defer wg.Done()
fea.LoadFeatures(user, nil, context)
}(fea)
}
wg.Wait()
}
func (t *UserEmbeddingDssmO2OTrigger) GetTriggerKey(u *module.User, context *context.RecommendContext) *TriggerResult {
//start := time.Now()
if t.useCacheFeatures {
ctx, cancel := gocontext.WithTimeout(gocontext.Background(), 100*time.Millisecond)
defer cancel()
select {
case <-u.FeatureAsyncLoadCh():
case <-ctx.Done():
plog.Error(fmt.Sprintf("requestId=%s\tmodule=UserEmbeddingDssmO2OTrigger\terror=%v", context.RecommendId, ctx.Err()))
}
}
user := u.Clone()
t.loadUserFeatures(user, context)
userFeatures := user.MakeUserFeatures2()
features := make(map[string]any, len(userFeatures))
for k, v := range userFeatures {
switch val := v.(type) {
case string:
if strings.Contains(val, t.seqDelimiter) {
features[fmt.Sprintf("user:%s", k)] = strings.Split(val, t.seqDelimiter)
} else if strings.Contains(val, t.multiValueDelimiter) {
features[fmt.Sprintf("user:%s", k)] = strings.Split(val, t.multiValueDelimiter)
} else {
features[fmt.Sprintf("user:%s", k)] = []string{val}
}
case []string:
features[fmt.Sprintf("user:%s", k)] = val
case []any:
features[fmt.Sprintf("user:%s", k)] = val
default:
if valStr := utils.ToString(val, ""); valStr != "" {
features[fmt.Sprintf("user:%s", k)] = []string{valStr}
}
}
}
j, _ := json.Marshal(features)
qinfo := base64.StdEncoding.EncodeToString(j)
if t.BizName != "" && t.RecallName != "" && t.BeName != "" {
go t.featureConsistencyJobService.LogRecallResult(user, nil, context, t.o2oType, "", qinfo, "", "", t.BeName, t.BizName, t.RecallName)
}
triggerResult := &TriggerResult{
TriggerItem: qinfo, // user feature base64
}
return triggerResult
}