Why
This is the first PR in the broader `mptoken_issuance_history` plan. It
lands the additive schema/backend layer first so later PRs can safely
add live ETL indexing, historical backfill, and finally the RPC handler
gated on backfill completion. Keeping this step dark avoids exposing
partial history while still making the stack reviewable in small pieces.
Summary
Adds the storage and backend primitives for MPT transaction-history
filtering.
- Adds Cassandra tables:
- mpt_transactions
- account_mpt_transactions
- Adds MPTTransactionsData and backend interface methods for
writing/fetching both MPT index shapes.
Implements Cassandra write/fetch paths with forward/reverse pagination,
raw-page cursor behavior, and case-insensitive tx_type filtering before
transaction hydration.
- Adds MockBackend coverage for the new pure-virtual methods.
- Adds Cassandra integration tests for round-trip behavior, ordering,
pagination, missing transaction blobs, sparse tx_type filtering, account
fanout, and account-side filtering.
This PR implemented the migration framework, which contains the command
line interface to execute migration and helps to migrate data easily.
Please read README.md for more information about this framework.
