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be_recall.go
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be_recall.go
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package recall
import (
"fmt"
"time"
"github.com/alibaba/pairec/v2/context"
"github.com/alibaba/pairec/v2/datasource/beengine"
"github.com/alibaba/pairec/v2/log"
"github.com/alibaba/pairec/v2/module"
"github.com/alibaba/pairec/v2/recconf"
"github.com/alibaba/pairec/v2/utils"
)
const (
beScoreFieldName = "__score__"
beMatchTypeFieldName = "match_type"
beRecallName = "recall_name"
beRecallNameV2 = "__recall_name__"
)
type BeBaseRecall interface {
GetItems(user *module.User, context *context.RecommendContext) ([]*module.Item, error)
//BuildRecallParam(user *module.User, context *context.RecommendContext) *be.RecallParam
BuildQueryParams(user *module.User, context *context.RecommendContext) (ret map[string]string)
CloneWithConfig(params map[string]interface{}) BeBaseRecall
}
type BeRecall struct {
*BaseRecall
bizRecall BeBaseRecall
}
func NewBeRecall(config recconf.RecallConfig) *BeRecall {
client, err := beengine.GetBeClient(config.BeConf.BeName)
if err != nil {
panic(err)
}
var bizRecall BeBaseRecall
switch config.BeConf.BeRecallType {
case recconf.BE_RecallType_X2I:
bizRecall = NewBeX2IRecall(client, config.BeConf)
case recconf.BE_RecallType_Vector:
bizRecall = NewBeVectorRecall(client, config.BeConf)
case recconf.BE_RecallType_MultiMerge:
bizRecall = NewBeMultiBizRecall(client, config.BeConf, config.Name)
}
if bizRecall == nil {
panic("be biz recall empty")
}
recall := &BeRecall{
BaseRecall: NewBaseRecall(config),
bizRecall: bizRecall,
}
return recall
}
func (r *BeRecall) GetCandidateItems(user *module.User, context *context.RecommendContext) (ret []*module.Item) {
start := time.Now()
items, err := r.bizRecall.GetItems(user, context)
if err != nil {
log.Error(fmt.Sprintf("requestId=%s\tmodule=BeRecall\tname=%s\terr=%v", context.RecommendId, r.modelName, err.Error()))
return
}
for _, item := range items {
if item.RetrieveId == "" {
item.RetrieveId = r.modelName
}
}
ret = items
log.Info(fmt.Sprintf("requestId=%s\tmodule=BeRecall\tname=%s\tcount=%d\tcost=%d", context.RecommendId, r.modelName, len(ret), utils.CostTime(start)))
return
}