Wei Tang
9fdd4672b0
* init_logger: switch from log-based to tracing-based and add compatibility layer * Move tracing profiling subscriber related config realization * sp-tracing: change profiling to be a layer instead of a subscriber * Enable profiling layer in cli * Change all test env_logger init to sp_tracing::try_init_simple * Remove all local env_logger dependency * Add missing tracing-subscriber dependency * frame-sudo: fix tests * frame-support: fix tests * Fix frame/pallet and executor tests * Fix the remaining tests * Use subscriber's try_init as recommended by @davidbarsky * Be explict that the tracing-log feature is needed * Set subscriber writer to stderr * Shorter line width * Update cargo lock tracing version * Fix sc_tracing crate compile * Fix sc_authority_discovery crate test * unremove default-features * Leave enabled to default true * Warn if global default cannot be set * Fix unused import * Remove unused PROXY_TARGET * Change all reference from rc5 to rc6 * Change all reference of rc2 to rc6 * Fix styling * Fix typo * make logger init error'ing * re-fixing the test issue Co-authored-by: Benjamin Kampmann <ben@parity.io>
Sudo Module
Overview
The Sudo module allows for a single account (called the "sudo key")
to execute dispatchable functions that require a Root call
or designate a new account to replace them as the sudo key.
Only one account can be the sudo key at a time.
Interface
Dispatchable Functions
Only the sudo key can call the dispatchable functions from the Sudo module.
sudo- Make aRootcall to a dispatchable function.set_key- Assign a new account to be the sudo key.
Usage
Executing Privileged Functions
The Sudo module itself is not intended to be used within other modules.
Instead, you can build "privileged functions" (i.e. functions that require Root origin) in other modules.
You can execute these privileged functions by calling sudo with the sudo key account.
Privileged functions cannot be directly executed via an extrinsic.
Learn more about privileged functions and Root origin in the Origin type documentation.
Simple Code Snippet
This is an example of a module that exposes a privileged function:
use frame_support::{decl_module, dispatch};
use frame_system::ensure_root;
pub trait Trait: frame_system::Trait {}
decl_module! {
pub struct Module<T: Trait> for enum Call where origin: T::Origin {
#[weight = 0]
pub fn privileged_function(origin) -> dispatch::DispatchResult {
ensure_root(origin)?;
// do something...
Ok(())
}
}
}
Genesis Config
The Sudo module depends on the GenesisConfig.
You need to set an initial superuser account as the sudo key.
Related Modules
License: Apache-2.0