43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
package finalizers
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import (
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"context"
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"fmt"
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"github.com/certusone/wormhole/node/pkg/watchers/evm/connectors"
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"github.com/certusone/wormhole/node/pkg/watchers/interfaces"
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"go.uber.org/zap"
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)
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// NeonFinalizer implements the finality check for Neon. The Neon block number is actually the Solana slot number.
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// Blocks on Neon should not be considered finalized until that slot is finalized on Solana. Confirmed this with the
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// Neon team on 11/12/2022. Also confirmed that they do not have a websocket interface so we need to poll for log events.
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type NeonFinalizer struct {
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logger *zap.Logger
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l1Finalizer interfaces.L1Finalizer
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}
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func NewNeonFinalizer(logger *zap.Logger, l1Finalizer interfaces.L1Finalizer) *NeonFinalizer {
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return &NeonFinalizer{
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logger: logger,
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l1Finalizer: l1Finalizer,
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}
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}
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// IsBlockFinalized compares the number of the Neon block with the latest finalized block on Solana.
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func (f *NeonFinalizer) IsBlockFinalized(ctx context.Context, block *connectors.NewBlock) (bool, error) {
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if block == nil {
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return false, fmt.Errorf("block is nil")
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}
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latestL1Block := f.l1Finalizer.GetLatestFinalizedBlockNumber()
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if latestL1Block == 0 {
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// This happens on start up.
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return false, nil
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}
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isFinalized := block.Number.Uint64() <= latestL1Block
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return isFinalized, nil
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}
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