/
sessionmanager.go
70 lines (55 loc) · 1.29 KB
/
sessionmanager.go
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package mongo
import (
"io"
"time"
"github.com/globalsign/mgo"
"github.com/zeromicro/go-zero/core/logx"
"github.com/zeromicro/go-zero/core/syncx"
)
const (
defaultConcurrency = 50
defaultTimeout = time.Second
)
var sessionManager = syncx.NewResourceManager()
type concurrentSession struct {
*mgo.Session
limit syncx.TimeoutLimit
}
func (cs *concurrentSession) Close() error {
cs.Session.Close()
return nil
}
func getConcurrentSession(url string) (*concurrentSession, error) {
val, err := sessionManager.GetResource(url, func() (io.Closer, error) {
mgoSession, err := mgo.Dial(url)
if err != nil {
return nil, err
}
concurrentSess := &concurrentSession{
Session: mgoSession,
limit: syncx.NewTimeoutLimit(defaultConcurrency),
}
return concurrentSess, nil
})
if err != nil {
return nil, err
}
return val.(*concurrentSession), nil
}
func (cs *concurrentSession) putSession(session *mgo.Session) {
if err := cs.limit.Return(); err != nil {
logx.Error(err)
}
// anyway, we need to close the session
session.Close()
}
func (cs *concurrentSession) takeSession(opts ...Option) (*mgo.Session, error) {
o := defaultOptions()
for _, opt := range opts {
opt(o)
}
if err := cs.limit.Borrow(o.timeout); err != nil {
return nil, err
}
return cs.Copy(), nil
}