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TempoPoolState

tempo_transaction_pool::maintain

Struct TempoPoolState 

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struct TempoPoolState {
    expiry_map: BTreeMap<u64, Vec<TxHash>>,
    tx_to_expiry: HashMap<TxHash, u64>,
    paused_pool: PausedFeeTokenPool,
    pending_staleness: PendingStalenessTracker,
    t1_transition_cleanup_done: bool,
    key_expiry: KeyExpiryTracker,
}
Expand description

Tracking state for pool maintenance operations.

Tracks AA transaction expiry (valid_before timestamps) for eviction.

Note: Stale entries (transactions no longer in the pool) are cleaned up lazily when we check pool.contains() before eviction. This avoids the overhead of subscribing to all transaction lifecycle events.

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§expiry_map: BTreeMap<u64, Vec<TxHash>>

Maps valid_before timestamp to transaction hashes that expire at that time.

§tx_to_expiry: HashMap<TxHash, u64>

Reverse mapping: tx_hash -> valid_before timestamp (for cleanup during drain).

§paused_pool: PausedFeeTokenPool

Pool for transactions whose fee token is temporarily paused.

§pending_staleness: PendingStalenessTracker

Tracks pending transaction staleness for DoS mitigation.

§t1_transition_cleanup_done: bool

Tracks whether the T1 transition cleanup has been performed. This is a one-time operation that removes transactions with max_fee_per_gas < T1 base fee. Will be removed after T1 is activated on mainnet.

§key_expiry: KeyExpiryTracker

Tracks keychain key expiry timestamps for eviction.

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impl TempoPoolState

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fn track_expiry(&mut self, maybe_aa_tx: Option<&AASigned>)

Tracks an AA transaction with a valid_before timestamp.

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fn untrack_expiry(&mut self, hash: &TxHash)

Removes expiry and key-expiry tracking for a single transaction.

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fn drain_expired(&mut self, tip_timestamp: u64) -> Vec<TxHash> ⓘ

Collects and removes all expired transactions up to the given timestamp. Returns the list of expired transaction hashes.

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fn track_key_expiry(&mut self, tx: &TempoPooledTransaction)

Track a keychain transaction’s key expiry for eviction.

Uses the key expiry cached on the transaction during validation. Skips if expiry wasn’t set (non-keychain tx, key never expires, etc.).

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impl Default for TempoPoolState

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fn default() -> TempoPoolState

Returns the “default value” for a type. Read more

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<TxEnv, T> FromRecoveredTx<&T> for TxEnv
where TxEnv: FromRecoveredTx<T>,

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fn from_recovered_tx(tx: &&T, sender: Address) -> TxEnv

Builds a [TxEnv] from a transaction and a sender address.
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impl<TxEnv, T> FromTxWithEncoded<&T> for TxEnv
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fn from_encoded_tx(tx: &&T, sender: Address, encoded: Bytes) -> TxEnv

Builds a [TxEnv] from a transaction, its sender, and encoded transaction bytes.
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Size: 280 bytes