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2ef6ab998c
When multiple filer requests are in-flight and the current filer disappears and a new one is selected by the first goroutine, then there can be a lot of race conditions while retrieving the current filer. Therefore, load/save the current filer index atomically.
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
package mount
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import (
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"sync/atomic"
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"google.golang.org/grpc"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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var _ = filer_pb.FilerClient(&WFS{})
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func (wfs *WFS) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) (err error) {
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return util.Retry("filer grpc", func() error {
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i := atomic.LoadInt32(&wfs.option.filerIndex)
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n := len(wfs.option.FilerAddresses)
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for x := 0; x < n; x++ {
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filerGrpcAddress := wfs.option.FilerAddresses[i].ToGrpcAddress()
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err = pb.WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error {
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client := filer_pb.NewSeaweedFilerClient(grpcConnection)
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return fn(client)
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}, filerGrpcAddress, wfs.option.GrpcDialOption)
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if err != nil {
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glog.V(0).Infof("WithFilerClient %d %v: %v", x, filerGrpcAddress, err)
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} else {
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atomic.StoreInt32(&wfs.option.filerIndex, i)
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return nil
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}
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i++
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if i >= int32(n) {
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i = 0
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}
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}
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return err
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})
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}
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func (wfs *WFS) AdjustedUrl(location *filer_pb.Location) string {
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if wfs.option.VolumeServerAccess == "publicUrl" {
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return location.PublicUrl
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}
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return location.Url
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}
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func (wfs *WFS) GetDataCenter() string {
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return wfs.option.DataCenter
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}
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