Егор Ивков authored 1 year ago and Yaroslav Dynnikov committed 1 year ago

- Add new variants to `traft::op::Op` for Ddl handling
- Provide corresponding Ddl operation structs
- Provide a builder for `DdlPrepare`

Georgy Moshkin authored 2 years ago and Yaroslav Dynnikov committed 1 year ago

This patch includes:

- Tarantool stored procedure `proc_cas`.
- Lua API `pico.cas`.
- Integration tests.

Now the function returns `first_index` instead of the number of entries
deleted - it has no practical purpose.

This patch adds a missing test for `pico.raft_compact_log` Lua API.
Also, it changes the API to be more alike other relevant Lua functions:
`raft_propose_*`, `raft_read_index`, `raft_timeout_now`.

1. Refine and document the behavior of
  - `RaftSpaceAccess::entries()`
  - `raft::Storage::entries()`
  - `raft::Storage::term()`
  - `raft::Storage::first_index()`
  - `raft::Storage::last_index()`

2. Test it intensively.

1. Change `.map_err(box_err)` into `cvt_err()`. It makes lines shorter.
2. Change few unwraps into `.expect()`.
3. Change `.unwrap_or_default()` into `.unwrap_or(v)`. It's shorter and
   saves some cognitive resources.

Yaroslav Dynnikov authored 2 years ago and Yaroslav Dynnikov committed 2 years ago

Also make `Default` trait implementation for `struct Instance` public.
Because keeping it private makes no sence for a public struct with
public fields.

Yaroslav Dynnikov authored 2 years ago and Yaroslav Dynnikov committed 2 years ago

"You should consider adding a `Default` implementation for `Mailbox<T>`"

Make it more alike `find_farthest`:

```rust
sum_distance(all, voters, candidate);
find_farthest(all, voters, candidates);
```

1. Besides `raft_conf` local state introduce `promotable` set of
   instances that are suitable for promotion.

2. Remove an instance from `promotable` set when it's actually promoted.