Struct NetworkTransactionBuilder 

pub struct NetworkTransactionBuilder { /* private fields */ }

Network transaction builder component.

The network transaction builder is in charge of building transactions that consume notes against network accounts. These notes are identified and communicated by the block producer. The service maintains a list of unconsumed notes and periodically executes and proves transactions that consume them (reaching out to the store to retrieve state as necessary).

The builder manages the tasks for every network account on the chain through the coordinator.

Create an instance using NtxBuilderConfig::build().

Implementations

impl NetworkTransactionBuilder

pub async fn run(self, listener: Option<TcpListener>) -> Result<()>

Runs the network transaction builder event loop until a fatal error occurs.

If a TcpListener is provided, a gRPC server is also spawned to expose the GetNoteError endpoint.

This method:

1. Optionally starts a gRPC server for note error queries
2. Spawns a background task to load existing network accounts from the store
3. Runs the main event loop, processing mempool events and managing actors

Errors

Returns an error if:

• The mempool event stream ends unexpectedly
• An actor encounters a fatal error
• The account loader task fails
• The gRPC server fails