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user_item_exposure_graph_dao.go
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user_item_exposure_graph_dao.go
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package module
import (
"fmt"
igraph "github.com/aliyun/aliyun-igraph-go-sdk"
"github.com/alibaba/pairec/v2/context"
"github.com/alibaba/pairec/v2/datasource/graph"
"github.com/alibaba/pairec/v2/log"
"github.com/alibaba/pairec/v2/recconf"
"strconv"
"strings"
"time"
)
type User2ItemExposureGraphDao struct {
graphClient *graph.GraphClient
instanceId string
tableName string
userNode string
itemNode string
edge string
maxItems int
timeInterval int // second
generateItemDataFuncName string
writeLogExcludeScenes map[string]bool
clearLogScene string
}
func NewUser2ItemExposureGraphDao(config recconf.FilterConfig) *User2ItemExposureGraphDao {
graphClient, err := graph.GetGraphClient(config.DaoConf.GraphName)
if err != nil {
panic(err)
}
dao := &User2ItemExposureGraphDao{
graphClient: graphClient,
instanceId: config.DaoConf.InstanceId,
tableName: config.DaoConf.TableName,
userNode: config.DaoConf.UserNode,
itemNode: config.DaoConf.ItemNode,
edge: config.DaoConf.Edge,
maxItems: -1,
timeInterval: -1,
generateItemDataFuncName: config.GenerateItemDataFuncName,
writeLogExcludeScenes: make(map[string]bool),
clearLogScene: config.ClearLogIfNotEnoughScene,
}
if config.MaxItems > 0 {
dao.maxItems = config.MaxItems
}
if config.TimeInterval > 0 {
dao.timeInterval = config.TimeInterval
}
for _, scene := range config.WriteLogExcludeScenes {
dao.writeLogExcludeScenes[scene] = true
}
return dao
}
func (d *User2ItemExposureGraphDao) LogHistory(user *User, items []*Item, context *context.RecommendContext) {
scene := context.GetParameter("scene").(string)
if _, exist := d.writeLogExcludeScenes[scene]; exist {
return
}
if len(items) == 0 {
log.Warning(fmt.Sprintf("requestId=%s\tmodule=User2ItemExposureGraphDao\terr=items empty", context.RecommendId))
return
}
userContent := make(map[string]string)
itemContent := make(map[string]string)
edgeContent := make(map[string]string)
// 将 uid 写入 user 节点
uid := string(user.Id)
createTime := strconv.FormatInt(time.Now().Unix(), 10)
userContent["uid"] = uid
userContent["create_time"] = createTime
userRequest := igraph.NewWriteRequest(igraph.WriteTypeAdd, d.instanceId, d.tableName, d.userNode, "uid", "", userContent)
_, err := d.graphClient.GraphClient.Write(userRequest)
if err != nil {
log.Error(fmt.Sprintf("requestId=%s\tmodule=User2ItemExposureGraphDao\tuid=%s\terr=%v", context.RecommendId, user.Id, err))
}
//将 item 数据写入 item 节点
var ret string
for _, item := range items {
itemData := getGenerateItemDataFunc(d.generateItemDataFuncName)(user.Id, item)
ret = ret + "," + itemData
}
ret = ret[1:]
itemContent["item"] = ret
itemContent["create_time"] = createTime
itemRequest := igraph.NewWriteRequest(igraph.WriteTypeAdd, d.instanceId, d.tableName, d.itemNode, "item", "", itemContent)
_, err = d.graphClient.GraphClient.Write(itemRequest)
if err != nil {
log.Error(fmt.Sprintf("requestId=%s\tmodule=User2ItemExposureGraphDao\tuid=%s\terr=%v", context.RecommendId, user.Id, err))
}
// 将 user 和 item 写入 edge
edgeContent["uid"] = uid
edgeContent["item"] = ret
edgeContent["create_time"] = createTime
edgeRequest := igraph.NewWriteRequest(igraph.WriteTypeAdd, d.instanceId, d.tableName, d.edge, "uid", "", edgeContent)
_, err = d.graphClient.GraphClient.Write(edgeRequest)
if err != nil {
log.Error(fmt.Sprintf("requestId=%s\tmodule=User2ItemExposureGraphDao\tuid=%s\terr=%v", context.RecommendId, user.Id, err))
}
log.Info(fmt.Sprintf("requestId=%s\tscene=%s\tuid=%s\tmsg=log history success", context.RecommendId, scene, user.Id))
}
func (d *User2ItemExposureGraphDao) FilterByHistory(uid UID, items []*Item) (ret []*Item) {
queryString := fmt.Sprintf("g(\"%s\").V(\"%s\").hasLabel(\"%s\").outE()", d.tableName, string(uid), d.userNode)
if d.timeInterval > 0 {
t := time.Now().Unix() - int64(d.timeInterval)
queryString += fmt.Sprintf(".filter(\"create_time>%d\")", t)
}
queryString += ".inV()"
if d.maxItems > 0 {
queryString += fmt.Sprintf(".limit(%d)", d.maxItems)
}
queryParam := make(map[string]string)
readRequest := &igraph.ReadRequest{
QueryString: queryString,
QueryParams: queryParam,
}
resp, err := d.graphClient.GraphClient.Read(readRequest)
if err != nil {
log.Error(fmt.Sprintf("module=User2ItemExposureGraphDao\tuid=%s\terr=%v", uid, err))
}
fiterIds := make(map[string]bool)
results := resp.Result
for _, res := range results {
for _, data := range res.Data {
itemDatas := data["item"].(string)
ids := strings.Split(itemDatas, ",")
for _, id := range ids {
fiterIds[id] = true
}
}
}
for _, item := range items {
itemData := getGenerateItemDataFunc(d.generateItemDataFuncName)(uid, item)
if _, ok := fiterIds[itemData]; !ok {
ret = append(ret, item)
}
}
return
}
func (d *User2ItemExposureGraphDao) ClearHistory(user *User, context *context.RecommendContext) {
scene := context.GetParameter("scene").(string)
if scene != d.clearLogScene {
return
}
content := make(map[string]string)
content["uid"] = string(user.Id)
// 删除 edge 中的 uid
request := igraph.NewWriteRequest(igraph.WriteTypeDelete, d.instanceId, d.tableName, d.edge, "uid", "", content)
_, err := d.graphClient.GraphClient.Write(request)
if err != nil {
log.Error(fmt.Sprintf("requestId=%s\tmodule=User2ItemExposureGraphDao\tuid=%s\terr=%v", context.RecommendId, user.Id, err))
}
log.Info(fmt.Sprintf("requestId=%s\tscene=%s\tuid=%s\tmsg=log history success", context.RecommendId, scene, user.Id))
}
func (d *User2ItemExposureGraphDao) GetExposureItemIds(user *User, context *context.RecommendContext) (ret string) {
queryString := fmt.Sprintf("g(\"%s\").V(\"%s\").hasLabel(\"%s\").outE()", d.tableName, string(user.Id), d.userNode)
if d.timeInterval > 0 {
t := time.Now().Unix() - int64(d.timeInterval)
queryString += fmt.Sprintf(".filter(\"create_time>%d\")", t)
}
queryString += ".inV()"
if d.maxItems > 0 {
queryString += fmt.Sprintf(".limit(%d)", d.maxItems)
}
queryParam := make(map[string]string)
readRequest := &igraph.ReadRequest{
QueryString: queryString,
QueryParams: queryParam,
}
resp, err := d.graphClient.GraphClient.Read(readRequest)
if err != nil {
log.Error(fmt.Sprintf("module=User2ItemExposureGraphDao\tuid=%s\terr=%v", user.Id, err))
}
fiterIds := make([]string, 0, 10)
results := resp.Result
for _, res := range results {
for _, data := range res.Data {
itemDatas := data["item"].(string)
ids := strings.Split(itemDatas, ",")
for _, id := range ids {
fiterIds = append(fiterIds, id)
}
}
}
ret = strings.Join(fiterIds, ",")
return
}