92d597ad23
## Proposed Changes
Enable multiple database backends for the slasher, either MDBX (default) or LMDB. The backend can be selected using `--slasher-backend={lmdb,mdbx}`.
## Additional Info
In order to abstract over the two library's different handling of database lifetimes I've used `Box::leak` to give the `Environment` type a `'static` lifetime. This was the only way I could think of using 100% safe code to construct a self-referential struct `SlasherDB`, where the `OpenDatabases` refers to the `Environment`. I think this is OK, as the `Environment` is expected to live for the life of the program, and both database engines leave the database in a consistent state after each write. The memory claimed for memory-mapping will be freed by the OS and appropriately flushed regardless of whether the `Environment` is actually dropped.
We are depending on two `sigp` forks of `libmdbx-rs` and `lmdb-rs`, to give us greater control over MDBX OS support and LMDB's version.
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| .. | ||
| database | ||
| array.rs | ||
| attestation_queue.rs | ||
| attester_record.rs | ||
| batch_stats.rs | ||
| block_queue.rs | ||
| config.rs | ||
| database.rs | ||
| error.rs | ||
| lib.rs | ||
| metrics.rs | ||
| migrate.rs | ||
| slasher.rs | ||
| test_utils.rs | ||