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Pre and Post Transaction Hooks#

Trident lets you perform specific logic before and after transaction execution with pre_transaction and post_transaction methods.

These methods accept a FuzzClient parameter, which provides methods to interact with the fuzzing environment. See the FuzzClient documentation for details.

Post-Transaction Execution Order

The post_transaction method is called only after the transaction is SUCCESSFULLY executed.

impl TransactionHooks for ExampleTransaction {
    fn pre_transaction(&self, client: &mut impl FuzzClient) {
        // Your custom logic goes here
    }
}

impl TransactionHooks for ExampleTransaction {
    fn post_transaction(&self, client: &mut impl FuzzClient) {
        // Your custom logic goes here
    }
}

Example#

The following examples demonstrates:

  • Always forward in time before the transaction
  • Always forward in time after the transaction
impl TransactionHooks for ExampleTransaction {
    fn pre_transaction(&self, client: &mut impl FuzzClient) {
        client.forward_in_time(500);
    }
}

impl TransactionHooks for ExampleTransaction {
    fn post_transaction(&self, client: &mut impl FuzzClient) {
        client.forward_in_time(500);
    }
}