Module drink_next::runtime::pallet_contracts_debugging

This module provides all the necessary elements for supporting contract debugging directly in the contracts pallet.

Smart-contract developer <-> pallet-contracts interaction flow

The interaction between end-user and runtime is as follows:

1. At some points during execution, the pallet invokes some callback through its configuration parameter Debug.
2. In order to forward the callback outside the runtime, Debug will call a runtime interface, that will then forward the call further to the proper runtime extension.
3. The runtime extension can be fully controlled by the end-user. It just has to be registered in the runtime.

So, in brief: pallet-contracts -> runtime interface -> runtime extension |<———–runtime side–––––––>|<—user side—>|

Passing objects between runtime and runtime extension

Unfortunately, runtime interface that lies between runtime, and the end-user accepts only simple argument types, and those that implement some specific traits. This means that usually, complex objects will be passed in their encoded form (Vec<u8> obtained with scale encoding).

Structs

• InterceptingExt
  A wrapper type for the InterceptingExtT debug extension.
• NoopExt
  The simplest extension - uses default implementation.
• TracingExt
  A wrapper type for the TracingExtT debug extension.

Enums

• DrinkDebug
  Main configuration parameter for the contracts pallet debugging. Provides all the necessary trait implementations.

Traits

• InterceptingExtT
  This trait describes a runtime extension that can be used to intercept contract calls.
• TracingExtT
  This trait describes a runtime extension that can be used to debug contract calls.