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Introduce storage attr macro #[disable_try_decode_storage] and set it on System::Events and ParachainSystem::HostConfiguration (#3454)

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Closes https://github.com/paritytech/polkadot-sdk/issues/2560

Allows marking storage items with `#[disable_try_decode_storage]`, and
uses it with `System::Events`.

Question: what's the recommended way to write a test for this? I
couldn't find a test for similar existing macro `#[whitelist_storage]`.
This commit is contained in:
Liam Aharon
2024-02-28 13:13:09 +11:00
committed by GitHub
parent 0cc9b9003c
commit 95da658360
8 changed files with 82 additions and 6 deletions
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substrate/frame/support/src/lib.rs
+15 -2
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@@ -982,6 +982,7 @@ pub mod pallet_prelude {
/// * [`pallet::storage_prefix = "SomeName"`](#palletstorage_prefix--somename-optional)
/// * [`pallet::unbounded`](#palletunbounded-optional)
/// * [`pallet::whitelist_storage`](#palletwhitelist_storage-optional)
/// * [`pallet::disable_try_decode_storage`](#palletdisable_try_decode_storage-optional)
/// * [`cfg(..)`](#cfg-for-storage) (on storage items)
/// * [`pallet::type_value`](#type-value-pallettype_value-optional)
/// * [`pallet::genesis_config`](#genesis-config-palletgenesis_config-optional)
@@ -1498,6 +1499,15 @@ pub mod pallet_prelude {
/// [`pallet::whitelist_storage`](frame_support::pallet_macros::whitelist_storage)
/// for more info.
///
/// ## `#[pallet::disable_try_decode_storage]` (optional)
///
/// The optional attribute `#[pallet::disable_try_decode_storage]` will declare the storage as
/// whitelisted state decoding during try-runtime logic.
///
/// See
/// [`pallet::disable_try_decode_storage`](frame_support::pallet_macros::disable_try_decode_storage)
/// for more info.
///
/// ## `#[cfg(..)]` (for storage)
/// The optional attributes `#[cfg(..)]` allow conditional compilation for the storage.
///
@@ -2272,8 +2282,8 @@ pub use frame_support_procedural::pallet;
/// Contains macro stubs for all of the pallet:: macros
pub mod pallet_macros {
pub use frame_support_procedural::{
composite_enum, config, disable_frame_system_supertrait_check, error, event,
extra_constants, feeless_if, generate_deposit, generate_store, getter, hooks,
composite_enum, config, disable_frame_system_supertrait_check, disable_try_decode_storage,
error, event, extra_constants, feeless_if, generate_deposit, generate_store, getter, hooks,
import_section, inherent, no_default, no_default_bounds, pallet_section, storage_prefix,
storage_version, type_value, unbounded, validate_unsigned, weight, whitelist_storage,
};
@@ -2698,6 +2708,8 @@ pub mod pallet_macros {
/// * [`macro@getter`]: Creates a custom getter function.
/// * [`macro@storage_prefix`]: Overrides the default prefix of the storage item.
/// * [`macro@unbounded`]: Declares the storage item as unbounded.
/// * [`macro@disable_try_decode_storage`]: Declares that try-runtime checks should not
/// attempt to decode the storage item.
///
/// #### Example
/// ```
@@ -2713,6 +2725,7 @@ pub mod pallet_macros {
/// #[pallet::getter(fn foo)]
/// #[pallet::storage_prefix = "OtherFoo"]
/// #[pallet::unbounded]
/// #[pallet::disable_try_decode_storage]
/// pub type Foo<T> = StorageValue<_, u32, ValueQuery>;
/// }
/// ```