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Expose storage_prefix logic, and remove duplicate code (#9621)

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* expose storage prefix generation, remove duplicate code

* remove more duplicate code

* clean up import

* fix io test

* remove slicing

* Update frame/support/src/storage/mod.rs

Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>

Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
This commit is contained in:
Shawn Tabrizi
2021-08-25 15:16:47 -04:00
committed by GitHub
parent 531fd70e22
commit 7c3890c652
12 changed files with 89 additions and 191 deletions
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substrate/frame/support/src/traits/metadata.rs
+1 -9
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@@ -92,15 +92,7 @@ impl StorageVersion {
/// See [`STORAGE_VERSION_STORAGE_KEY_POSTFIX`] on how this key is built.
pub fn storage_key<P: PalletInfoAccess>() -> [u8; 32] {
let pallet_name = P::name();
let pallet_name = sp_io::hashing::twox_128(pallet_name.as_bytes());
let postfix = sp_io::hashing::twox_128(STORAGE_VERSION_STORAGE_KEY_POSTFIX);
let mut final_key = [0u8; 32];
final_key[..16].copy_from_slice(&pallet_name);
final_key[16..].copy_from_slice(&postfix);
final_key
crate::storage::storage_prefix(pallet_name.as_bytes(), STORAGE_VERSION_STORAGE_KEY_POSTFIX)
}
/// Put this storage version for the given pallet into the storage.