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Merge pull request ethereum-optimism#5505 from ethereum-optimism/aj/f…
…pp-retry op-program: Add retrying to L1 and L2 fetchers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| package prefetcher | ||
|
|
||
| import ( | ||
| "context" | ||
| "math" | ||
|
|
||
| "github.com/ethereum-optimism/optimism/op-node/eth" | ||
| "github.com/ethereum-optimism/optimism/op-service/backoff" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/core/types" | ||
| "github.com/ethereum/go-ethereum/log" | ||
| ) | ||
|
|
||
| const maxAttempts = math.MaxInt // Succeed or die trying | ||
|
|
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| type RetryingL1Source struct { | ||
| logger log.Logger | ||
| source L1Source | ||
| strategy backoff.Strategy | ||
| } | ||
|
|
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| func NewRetryingL1Source(logger log.Logger, source L1Source) *RetryingL1Source { | ||
| return &RetryingL1Source{ | ||
| logger: logger, | ||
| source: source, | ||
| strategy: backoff.Exponential(), | ||
| } | ||
| } | ||
|
|
||
| func (s *RetryingL1Source) InfoByHash(ctx context.Context, blockHash common.Hash) (eth.BlockInfo, error) { | ||
| var info eth.BlockInfo | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| res, err := s.source.InfoByHash(ctx, blockHash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to retrieve info", "hash", blockHash, "err", err) | ||
| return err | ||
| } | ||
| info = res | ||
| return nil | ||
| }) | ||
| return info, err | ||
| } | ||
|
|
||
| func (s *RetryingL1Source) InfoAndTxsByHash(ctx context.Context, blockHash common.Hash) (eth.BlockInfo, types.Transactions, error) { | ||
| var info eth.BlockInfo | ||
| var txs types.Transactions | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| i, t, err := s.source.InfoAndTxsByHash(ctx, blockHash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to retrieve info and txs", "hash", blockHash, "err", err) | ||
| return err | ||
| } | ||
| info = i | ||
| txs = t | ||
| return nil | ||
| }) | ||
| return info, txs, err | ||
| } | ||
|
|
||
| func (s *RetryingL1Source) FetchReceipts(ctx context.Context, blockHash common.Hash) (eth.BlockInfo, types.Receipts, error) { | ||
| var info eth.BlockInfo | ||
| var rcpts types.Receipts | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| i, r, err := s.source.FetchReceipts(ctx, blockHash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to fetch receipts", "hash", blockHash, "err", err) | ||
| return err | ||
| } | ||
| info = i | ||
| rcpts = r | ||
| return nil | ||
| }) | ||
| return info, rcpts, err | ||
| } | ||
|
|
||
| var _ L1Source = (*RetryingL1Source)(nil) | ||
|
|
||
| type RetryingL2Source struct { | ||
| logger log.Logger | ||
| source L2Source | ||
| strategy backoff.Strategy | ||
| } | ||
|
|
||
| func (s *RetryingL2Source) InfoAndTxsByHash(ctx context.Context, blockHash common.Hash) (eth.BlockInfo, types.Transactions, error) { | ||
| var info eth.BlockInfo | ||
| var txs types.Transactions | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| i, t, err := s.source.InfoAndTxsByHash(ctx, blockHash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to retrieve info and txs", "hash", blockHash, "err", err) | ||
| return err | ||
| } | ||
| info = i | ||
| txs = t | ||
| return nil | ||
| }) | ||
| return info, txs, err | ||
| } | ||
|
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| func (s *RetryingL2Source) NodeByHash(ctx context.Context, hash common.Hash) ([]byte, error) { | ||
| var node []byte | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| n, err := s.source.NodeByHash(ctx, hash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to retrieve node", "hash", hash, "err", err) | ||
| return err | ||
| } | ||
| node = n | ||
| return nil | ||
| }) | ||
| return node, err | ||
| } | ||
|
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| func (s *RetryingL2Source) CodeByHash(ctx context.Context, hash common.Hash) ([]byte, error) { | ||
| var code []byte | ||
| err := backoff.DoCtx(ctx, maxAttempts, s.strategy, func() error { | ||
| c, err := s.source.CodeByHash(ctx, hash) | ||
| if err != nil { | ||
| s.logger.Warn("Failed to retrieve code", "hash", hash, "err", err) | ||
| return err | ||
| } | ||
| code = c | ||
| return nil | ||
| }) | ||
| return code, err | ||
| } | ||
|
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| func NewRetryingL2Source(logger log.Logger, source L2Source) *RetryingL2Source { | ||
| return &RetryingL2Source{ | ||
| logger: logger, | ||
| source: source, | ||
| strategy: backoff.Exponential(), | ||
| } | ||
| } | ||
|
|
||
| var _ L2Source = (*RetryingL2Source)(nil) |
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