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send.go
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send.go
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package bloom
import (
"context"
"github.com/elek/stbb/pkg/util"
"github.com/zeebo/errs"
"math"
"storj.io/common/bloomfilter"
"storj.io/common/pb"
"storj.io/common/storj"
"time"
)
type Send struct {
util.DialerHelper
URL storj.NodeURL
Size int `default:"4200000"`
}
func (s Send) Run() error {
ctx := context.Background()
dialer, err := s.CreateRPCDialer()
conn, err := dialer.DialNodeURL(ctx, s.URL)
if err != nil {
return err
}
defer conn.Close()
client := pb.NewDRPCPiecestoreClient(util.NewTracedConnection(conn))
bf := make([]byte, s.Size)
for i := 3; i < len(bf); i++ {
bf[i] = 255
}
bitsPerElement := -1.44 * math.Log2(0.01)
hashCountInt := int(math.Ceil(bitsPerElement * math.Log(2)))
if hashCountInt > 32 {
// it will never be larger, but just in case to avoid overflow
hashCountInt = 32
}
seed := bloomfilter.GenerateSeed()
bf[0] = 1
bf[1] = byte(hashCountInt)
bf[2] = seed
req := &pb.RetainRequest{
CreationDate: time.Now(),
//Filter: make([]byte, 10),
Filter: bf,
}
_, err = client.Retain(ctx, req)
if err != nil {
return errs.Wrap(err)
}
return nil
}