openbilibili/app/service/bbq/user/internal/dao/dao.cache.go

// Code generated by $GOPATH/src/go-common/app/tool/cache/gen. DO NOT EDIT.

/*
  Package dao is a generated cache proxy package.
  It is generated from:
  type _cache interface {
		// cache: -batch=10 -max_group=10 -batch_err=break -nullcache=&api.UserBase{Mid:-1} -check_null_code=$==nil||$.Mid==-1
		UserBase(c context.Context, mid []int64) (map[int64]*api.UserBase, error)
	}
*/

package dao

import (
	"context"
	"sync"

	"go-common/app/service/bbq/user/api"
	"go-common/library/stat/prom"
	"go-common/library/sync/errgroup"
)

var _ _cache

// UserBase get data from cache if miss will call source method, then add to cache.
func (d *Dao) UserBase(c context.Context, keys []int64) (res map[int64]*api.UserBase, err error) {
	if len(keys) == 0 {
		return
	}
	addCache := true
	if res, err = d.CacheUserBase(c, keys); err != nil {
		addCache = false
		res = nil
		err = nil
	}
	var miss []int64
	for _, key := range keys {
		if (res == nil) || (res[key] == nil) {
			miss = append(miss, key)
		}
	}
	prom.CacheHit.Add("UserBase", int64(len(keys)-len(miss)))
	for k, v := range res {
		if v == nil || v.Mid == -1 {
			delete(res, k)
		}
	}
	missLen := len(miss)
	if missLen == 0 {
		return
	}
	missData := make(map[int64]*api.UserBase, missLen)
	prom.CacheMiss.Add("UserBase", int64(missLen))
	var mutex sync.Mutex
	group, ctx := errgroup.WithContext(c)
	if missLen > 10 {
		group.GOMAXPROCS(10)
	}
	var run = func(ms []int64) {
		group.Go(func() (err error) {
			data, err := d.RawUserBase(ctx, ms)
			mutex.Lock()
			for k, v := range data {
				missData[k] = v
			}
			mutex.Unlock()
			return
		})
	}
	var (
		i int
		n = missLen / 10
	)
	for i = 0; i < n; i++ {
		run(miss[i*n : (i+1)*n])
	}
	if len(miss[i*n:]) > 0 {
		run(miss[i*n:])
	}
	err = group.Wait()
	if res == nil {
		res = make(map[int64]*api.UserBase, len(keys))
	}
	for k, v := range missData {
		res[k] = v
	}
	if err != nil {
		return
	}
	for _, key := range miss {
		if res[key] == nil {
			missData[key] = &api.UserBase{Mid: -1}
		}
	}
	if !addCache {
		return
	}
	d.cache.Do(c, func(c context.Context) {
		d.AddCacheUserBase(c, missData)
	})
	return
}