Module v2

Migration module for migrating from V2 to V3

Structs

ChildCursor

Type to encapsulate a child key of a certain size, or no key. Necessary because we need MaxEncodedLen, which Vec<u8> doesn’t give us. Cursor struct for tracking migration progress

FinalizeV2Migration

Finalize the migration by updating the pallet storage version.

MigrateItemizedV1ToV2

The step function will be called once per block. It is very important that this function never panics and never uses more weight than it got in its meter. The migrations should also try to make maximal progress per step, so that the total time it takes to migrate stays low.

MigratePaginatedV1ToV2

The step function will be called once per block. It is very important that this function never panics and never uses more weight than it got in its meter. The migrations should also try to make maximal progress per step, so that the total time it takes to migrate stays low.

Functions

process_itemized_page

Migrates a single ItemizedPage

process_paginated_page

Migrates a single PaginatedPage

Type Aliases

ItemizedKeyLength

The length of an ItemizedKey (twox_128, u16)

PaginatedKeyLength

The length of a PaginatedKey (twox_128, twox_128, u16, u16)