36 lines
710 B
Go
36 lines
710 B
Go
package full
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import (
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"context"
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"fmt"
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"github.com/filecoin-project/lotus/chain/beacon"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/specs-actors/actors/abi"
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"go.uber.org/fx"
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)
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type BeaconAPI struct {
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fx.In
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Beacon beacon.RandomBeacon
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}
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func (a *BeaconAPI) BeaconGetEntry(ctx context.Context, epoch abi.ChainEpoch) (*types.BeaconEntry, error) {
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rr := a.Beacon.MaxBeaconRoundForEpoch(epoch, types.BeaconEntry{})
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e := a.Beacon.Entry(ctx, rr)
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select {
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case be, ok := <-e:
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if !ok {
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return nil, fmt.Errorf("beacon get returned no value")
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}
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if be.Err != nil {
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return nil, be.Err
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}
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return &be.Entry, nil
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case <-ctx.Done():
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return nil, ctx.Err()
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}
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}
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