Bastian Köcher
448989f5ec
* sp-api: Support nested transactions Adds support for nested transactions in `sp-api` by using `execute_in_transaction`. This was working until a recent refactor, but this was actually not intended. However, supporting nested transactions is a worthwhile feature to have. So, this pr "brings it back" and adds a test to ensure it will not break. * Make clippy happy * Assert that the runtime api type is not unwind safe * Count number of transactions
Substrate runtime api
The Substrate runtime api is the crucial interface between the node and the runtime.
Every call that goes into the runtime is done with a runtime api. The runtime apis are not fixed.
Every Substrate user can define its own apis with
decl_runtime_apis and implement them in
the runtime with impl_runtime_apis.
Every Substrate runtime needs to implement the [Core] runtime api. This api provides the basic
functionality that every runtime needs to export.
Besides the macros and the [Core] runtime api, this crates provides the [Metadata] runtime
api, the [ApiExt] trait, the [CallApiAt] trait and the [ConstructRuntimeApi] trait.
On a meta level this implies, the client calls the generated API from the client perspective.
License: Apache-2.0