mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Shinsaku Ashizawa
67 lines
2.3 KiB
Markdown
67 lines
2.3 KiB
Markdown
# Scored Pool Module
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The module maintains a scored membership pool. Each entity in the
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pool can be attributed a `Score`. From this pool a set `Members`
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is constructed. This set contains the `MemberCount` highest
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scoring entities. Unscored entities are never part of `Members`.
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If an entity wants to be part of the pool a deposit is required.
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The deposit is returned when the entity withdraws or when it
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is removed by an entity with the appropriate authority.
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Every `Period` blocks the set of `Members` is refreshed from the
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highest scoring members in the pool and, no matter if changes
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occurred, `T::MembershipChanged::set_members_sorted` is invoked.
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On first load `T::MembershipInitialized::initialize_members` is
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invoked with the initial `Members` set.
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It is possible to withdraw candidacy/resign your membership at any
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time. If an entity is currently a member, this results in removal
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from the `Pool` and `Members`; the entity is immediately replaced
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by the next highest scoring candidate in the pool, if available.
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- [`scored_pool::Trait`](https://docs.rs/pallet-scored-pool/latest/pallet_scored_pool/trait.Config.html)
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- [`Call`](https://docs.rs/pallet-scored-pool/latest/pallet_scored_pool/enum.Call.html)
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- [`Module`](https://docs.rs/pallet-scored-pool/latest/pallet_scored_pool/struct.Module.html)
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## Interface
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### Public Functions
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- `submit_candidacy` - Submit candidacy to become a member. Requires a deposit.
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- `withdraw_candidacy` - Withdraw candidacy. Deposit is returned.
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- `score` - Attribute a quantitative score to an entity.
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- `kick` - Remove an entity from the pool and members. Deposit is returned.
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- `change_member_count` - Changes the amount of candidates taken into `Members`.
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## Usage
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```rust
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use frame_support::{decl_module, dispatch};
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use frame_system::ensure_signed;
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use pallet_scored_pool::{self as scored_pool};
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pub trait Config: scored_pool::Config {}
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decl_module! {
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pub struct Module<T: Config> for enum Call where origin: T::Origin {
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#[weight = 0]
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pub fn candidate(origin) -> dispatch::DispatchResult {
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let who = ensure_signed(origin)?;
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let _ = <scored_pool::Module<T>>::submit_candidacy(
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T::Origin::from(Some(who.clone()).into())
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);
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Ok(())
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}
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}
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}
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```
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## Dependencies
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This module depends on the [System module](https://docs.rs/frame-system/latest/frame_system/).
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License: Apache-2.0
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