Module migration 

Storage migrations for the dmp pallet.

MigrateV0ToV1 translates the old Vec-per-para layout (v0::DownwardMessageQueues) into the paged layout (DownwardMessageQueueMeta + DownwardMessageQueuePages).

Modules

v0

The OLD (pre-paged) storage layout.

Structs

MigrateV0ToV1

Migrate v0::DownwardMessageQueues into the paged layout.

Enums

MigrationCursor

Resume position for MigrateV0ToV1. Returning Ok(None) ends the migration; while v0::DownwardMessageQueues has data, return Some(_).

Constants

STORAGE_VERSION

The in-code storage version.