Struct sc_transaction_pool::Pool[][src]

pub struct Pool<B: ChainApi> { /* fields omitted */ }
Expand description

Extrinsics pool that performs validation.

Implementations

Create a new transaction pool.

Imports a bunch of unverified extrinsics to the pool

Resubmit the given extrinsics to the pool.

This does not check if a transaction is banned, before we verify it again.

Imports one unverified extrinsic to the pool

Import a single extrinsic and starts to watch its progress in the pool.

Resubmit some transaction that were validated elsewhere.

Prunes known ready transactions.

Used to clear the pool from transactions that were part of recently imported block. The main difference from the prune is that we do not revalidate any transactions and ignore unknown passed hashes.

Prunes ready transactions.

Used to clear the pool from transactions that were part of recently imported block. To perform pruning we need the tags that each extrinsic provides and to avoid calling into runtime too often we first lookup all extrinsics that are in the pool and get their provided tags from there. Otherwise we query the runtime at the parent block.

Prunes ready transactions that provide given list of tags.

Given tags are assumed to be always provided now, so all transactions in the Future Queue that require that particular tag (and have other requirements satisfied) are promoted to Ready Queue.

Moreover for each provided tag we remove transactions in the pool that:

  1. Provide that tag directly
  2. Are a dependency of pruned transaction.

Returns transactions that have been removed from the pool and must be reverified before reinserting to the pool.

By removing predecessor transactions as well we might actually end up pruning too much, so all removed transactions are reverified against the runtime (validate_transaction) to make sure they are invalid.

However we avoid revalidating transactions that are contained within the second parameter of known_imported_hashes. These transactions (if pruned) are not revalidated and become temporarily banned to prevent importing them in the (near) future.

Returns transaction hash

get a reference to the underlying validated pool.

Trait Implementations

Returns a copy of the value. Read more

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