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Allow renaming storage item prefixes (#9016)

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* Implement parsing for #[pallet::storage_name] on storage items

* Rename storage prefix when a #[pallet::storage_name] is supplied

* Fix test_storage_info

* Rename storage_name to storage_prefix

* Check for duplicates when renaming storage prefixes

* Allow only string literals for storage_prefix renames

* Use proper spans for attribute errors

* Check for valid identifiers when parsing storage prefix renames
This commit is contained in:
Keith Yeung
2021-06-14 03:07:09 -07:00
committed by GitHub
parent 0975a92818
commit c2f13a03a8
13 changed files with 288 additions and 20 deletions
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substrate/frame/support/test/tests/pallet.rs
+20
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@@ -198,6 +198,10 @@ pub mod pallet {
#[pallet::storage]
pub type Value<T> = StorageValue<Value = u32>;
#[pallet::storage]
#[pallet::storage_prefix = "Value2"]
pub type RenamedValue<T> = StorageValue<Value = u64>;
#[pallet::type_value]
pub fn MyDefault<T: Config>() -> u16
where T::AccountId: From<SomeType7> + From<SomeType1> + SomeAssociation1
@@ -577,6 +581,10 @@ fn storage_expand() {
let k = [twox_128(b"Example"), twox_128(b"Value")].concat();
assert_eq!(unhashed::get::<u32>(&k), Some(1u32));
pallet::RenamedValue::<Runtime>::put(2);
let k = [twox_128(b"Example"), twox_128(b"Value2")].concat();
assert_eq!(unhashed::get::<u64>(&k), Some(2));
pallet::Map::<Runtime>::insert(1, 2);
let mut k = [twox_128(b"Example"), twox_128(b"Map")].concat();
k.extend(1u8.using_encoded(blake2_128_concat));
@@ -697,6 +705,13 @@ fn metadata() {
default: DecodeDifferent::Decoded(vec![0]),
documentation: DecodeDifferent::Decoded(vec![]),
},
StorageEntryMetadata {
name: DecodeDifferent::Decoded("Value2".to_string()),
modifier: StorageEntryModifier::Optional,
ty: StorageEntryType::Plain(DecodeDifferent::Decoded("u64".to_string())),
default: DecodeDifferent::Decoded(vec![0]),
documentation: DecodeDifferent::Decoded(vec![]),
},
StorageEntryMetadata {
name: DecodeDifferent::Decoded("Map".to_string()),
modifier: StorageEntryModifier::Default,
@@ -993,6 +1008,11 @@ fn test_storage_info() {
max_values: Some(1),
max_size: Some(4),
},
StorageInfo {
prefix: prefix(b"Example", b"Value2"),
max_values: Some(1),
max_size: Some(8),
},
StorageInfo {
prefix: prefix(b"Example", b"Map"),
max_values: None,