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Move proxies migration (#7205)

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* move the time delayed proxies migration into a separate function

* add use statement

* Update frame/proxy/src/lib.rs

* bump proxy cargo version

* update Cargo.lock

* Update lib.rs

* better format

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Gav Wood <gavin@parity.io>
This commit is contained in:
Alexander Popiak
2020-09-25 11:11:48 +02:00
committed by GitHub
parent 26465eadaa
commit 1a65205278
3 changed files with 31 additions and 18 deletions
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substrate/frame/proxy/src/lib.rs
+29 -16
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@@ -226,22 +226,6 @@ decl_module! {
/// `AnnouncementDepositFactor` metadata shadow.
const AnnouncementDepositFactor: BalanceOf<T> = T::AnnouncementDepositFactor::get();
fn on_runtime_upgrade() -> Weight {
Proxies::<T>::translate::<(Vec<(T::AccountId, T::ProxyType)>, BalanceOf<T>), _>(
|_, (targets, deposit)| Some((
targets.into_iter()
.map(|(a, t)| ProxyDefinition {
delegate: a,
proxy_type: t,
delay: Zero::zero(),
})
.collect::<Vec<_>>(),
deposit,
))
);
T::MaximumBlockWeight::get()
}
/// Dispatch the given `call` from an account that the sender is authorised for through
/// `add_proxy`.
///
@@ -675,3 +659,32 @@ impl<T: Trait> Module<T> {
Self::deposit_event(RawEvent::ProxyExecuted(e.map(|_| ()).map_err(|e| e.error)));
}
}
/// Migration utilities for upgrading the Proxy pallet between its different versions.
pub mod migration {
use super::*;
/// Migration code for https://github.com/paritytech/substrate/pull/6770
///
/// Details: This migration was introduced between Substrate 2.0-RC6 and Substrate 2.0 releases.
/// Before this migration, the `Proxies` storage item used a tuple of `AccountId` and
/// `ProxyType` to represent the proxy definition. After #6770, we switched to use a struct
/// `ProxyDefinition` which additionally included a `BlockNumber` delay value. This function,
/// simply takes any existing proxies using the old tuple format, and migrates it to the new
/// struct by setting the delay to zero.
pub fn migrate_to_time_delayed_proxies<T: Trait>() -> Weight {
Proxies::<T>::translate::<(Vec<(T::AccountId, T::ProxyType)>, BalanceOf<T>), _>(
|_, (targets, deposit)| Some((
targets.into_iter()
.map(|(a, t)| ProxyDefinition {
delegate: a,
proxy_type: t,
delay: Zero::zero(),
})
.collect::<Vec<_>>(),
deposit,
))
);
T::MaximumBlockWeight::get()
}
}