seaweedfs/weed/storage/needle/async_request.go

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package needle
type AsyncRequest struct {
N *Needle
IsWriteRequest bool
ActualSize int64
offset uint64
size uint64
doneChan chan interface{}
isUnchanged bool
err error
}
func NewAsyncRequest(n *Needle, isWriteRequest bool) *AsyncRequest {
return &AsyncRequest{
offset: 0,
size: 0,
ActualSize: 0,
doneChan: make(chan interface{}),
N: n,
isUnchanged: false,
IsWriteRequest: isWriteRequest,
err: nil,
}
}
func (r *AsyncRequest) WaitComplete() (uint64, uint64, bool, error) {
<-r.doneChan
return r.offset, r.size, r.isUnchanged, r.err
}
func (r *AsyncRequest) Complete(offset uint64, size uint64, isUnchanged bool, err error) {
r.offset = offset
r.size = size
r.isUnchanged = isUnchanged
r.err = err
close(r.doneChan)
}
func (r *AsyncRequest) UpdateResult(offset uint64, size uint64, isUnchanged bool, err error) {
r.offset = offset
r.size = size
r.isUnchanged = isUnchanged
r.err = err
}
func (r *AsyncRequest) Submit() {
close(r.doneChan)
}
func (r *AsyncRequest) IsSucceed() bool {
return r.err == nil
}