95 lines
1.8 KiB
Go
95 lines
1.8 KiB
Go
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package static
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import (
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"context"
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"encoding/json"
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"strconv"
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"time"
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"go-common/app/interface/main/app-resource/conf"
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eggdao "go-common/app/interface/main/app-resource/dao/egg"
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"go-common/app/interface/main/app-resource/model"
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"go-common/app/interface/main/app-resource/model/static"
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"go-common/library/ecode"
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"go-common/library/log"
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farm "github.com/dgryski/go-farm"
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)
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const (
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_initVersion = "static_version"
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)
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var (
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_emptyStatics = []*static.Static{}
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)
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// Service static service.
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type Service struct {
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dao *eggdao.Dao
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tick time.Duration
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cache map[int8][]*static.Static
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staticPath string
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}
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// New new a static service.
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func New(c *conf.Config) (s *Service) {
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s = &Service{
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dao: eggdao.New(c),
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tick: time.Duration(c.Tick),
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cache: map[int8][]*static.Static{},
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staticPath: c.StaticJSONFile,
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}
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now := time.Now()
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s.loadCache(now)
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go s.loadCachepro()
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return
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}
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// Static return statics
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func (s *Service) Static(plat int8, build int, ver string, now time.Time) (res []*static.Static, version string, err error) {
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var (
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tmps = s.cache[plat]
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)
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for _, tmp := range tmps {
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if model.InvalidBuild(build, tmp.Build, tmp.Condition) {
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continue
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}
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res = append(res, tmp)
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}
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if len(res) == 0 {
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res = _emptyStatics
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}
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if version = s.hash(res); version == ver {
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err = ecode.NotModified
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res = nil
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}
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return
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}
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func (s *Service) hash(v []*static.Static) string {
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bs, err := json.Marshal(v)
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if err != nil {
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log.Error("json.Marshal error(%v)", err)
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return _initVersion
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}
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return strconv.FormatUint(farm.Hash64(bs), 10)
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}
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// loadCache update egg
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func (s *Service) loadCache(now time.Time) {
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tmp, err := s.dao.Egg(context.TODO(), now)
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if err != nil {
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log.Error("s.dao.Egg error(%v)", err)
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return
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}
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s.cache = tmp
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}
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func (s *Service) loadCachepro() {
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for {
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time.Sleep(s.tick)
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s.loadCache(time.Now())
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}
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}
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