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use crate::{BalanceOf, Config, FeedConfig, RoundId};
use frame_support::{
sp_runtime::traits::{One, Zero},
BoundedVec, Parameter,
};
use sp_std::prelude::*;
use frame_support::sp_std::convert::TryInto;
use frame_support::traits::Get;
#[cfg(feature = "std")]
use serde::{Deserialize, Serialize};
#[derive(Clone)]
#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
pub struct FeedBuilder<AccountId, Balance, BlockNumber, Value> {
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<AccountId>: Serialize",
deserialize = "Option<AccountId>: Deserialize<'de>"
))
)]
pub owner: Option<AccountId>,
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<Balance>: Serialize",
deserialize = "Option<Balance>: Deserialize<'de>"
))
)]
pub payment: Option<Balance>,
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<BlockNumber>: Serialize",
deserialize = "Option<BlockNumber>: Deserialize<'de>"
))
)]
pub timeout: Option<BlockNumber>,
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<(Value, Value)>: Serialize",
deserialize = "Option<(Value, Value)>: Deserialize<'de>"
))
)]
pub value_bounds: Option<(Value, Value)>,
pub min_submissions: Option<u32>,
pub description: Option<Vec<u8>>,
pub decimals: Option<u8>,
pub restart_delay: Option<u32>,
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<Vec<(AccountId, AccountId)>>: Serialize",
deserialize = "Option<Vec<(AccountId, AccountId)>>: Deserialize<'de>"
))
)]
pub oracles: Option<Vec<(AccountId, AccountId)>>,
pub pruning_window: Option<u32>,
#[cfg_attr(
feature = "std",
serde(bound(
serialize = "Option<Balance>: Serialize",
deserialize = "Option<Balance>: Deserialize<'de>"
))
)]
pub max_debt: Option<Balance>,
}
impl<AccountId, Balance, BlockNumber, Value> FeedBuilder<AccountId, Balance, BlockNumber, Value>
where
AccountId: Parameter,
Balance: Parameter + Zero,
BlockNumber: Parameter,
Value: Parameter,
{
pub fn new() -> Self {
Self::default()
}
pub fn owner(mut self, o: AccountId) -> Self {
self.owner = Some(o);
self
}
pub fn payment(mut self, p: Balance) -> Self {
self.payment = Some(p);
self
}
pub fn timeout(mut self, t: BlockNumber) -> Self {
self.timeout = Some(t);
self
}
pub fn value_bounds(mut self, min: Value, max: Value) -> Self {
self.value_bounds = Some((min, max));
self
}
pub fn min_submissions(mut self, m: u32) -> Self {
self.min_submissions = Some(m);
self
}
pub fn description(mut self, d: Vec<u8>) -> Self {
self.description = Some(d);
self
}
pub fn restart_delay(mut self, d: u32) -> Self {
self.restart_delay = Some(d);
self
}
pub fn oracles(mut self, o: Vec<(AccountId, AccountId)>) -> Self {
self.oracles = Some(o);
self
}
pub fn decimals(mut self, decimals: u8) -> Self {
self.decimals = Some(decimals);
self
}
pub fn pruning_window(mut self, w: u32) -> Self {
self.pruning_window = Some(w);
self
}
pub fn max_debt(mut self, v: Balance) -> Self {
self.max_debt = Some(v);
self
}
pub fn build<'a, StringLimit: Get<u32>>(
self,
) -> Result<
FeedConfig<AccountId, Balance, BlockNumber, Value, BoundedVec<u8, StringLimit>>,
&'static str,
> {
let oracles = self.oracles.ok_or("Feed requires oracles.")?;
let submission_count_bounds = (
self.min_submissions
.ok_or("Feed requires min_submissions.")?,
oracles.len() as u32,
);
let description = if let Some(desc) = self.description {
desc.try_into().map_err(|_| "Feed description too long.")?
} else {
Default::default()
};
let config = FeedConfig {
owner: self.owner.ok_or("Feed requires owner.")?,
pending_owner: None,
submission_value_bounds: self.value_bounds.ok_or("Feed requires value_bounds.")?,
submission_count_bounds,
payment: self.payment.ok_or("Feed requires payment.")?,
timeout: self.timeout.ok_or("Feed requires timeout.")?,
decimals: self.decimals.ok_or("Feed requires decimals.")?,
description,
restart_delay: self.restart_delay.ok_or("Feed requires restart_delay.")?,
reporting_round: Zero::zero(),
latest_round: Zero::zero(),
first_valid_round: None,
oracle_count: Zero::zero(),
pruning_window: self.pruning_window.unwrap_or(RoundId::MAX),
next_round_to_prune: RoundId::one(),
debt: Zero::zero(),
max_debt: self.max_debt,
};
Ok(config)
}
}
impl<AccountId, Balance, BlockNumber, Value> Default
for FeedBuilder<AccountId, Balance, BlockNumber, Value>
{
fn default() -> Self {
Self {
owner: None,
payment: None,
timeout: None,
value_bounds: None,
min_submissions: None,
description: None,
decimals: None,
restart_delay: None,
oracles: None,
pruning_window: None,
max_debt: None,
}
}
}
pub type FeedBuilderOf<T> = FeedBuilder<
<T as frame_system::Config>::AccountId,
BalanceOf<T>,
<T as frame_system::Config>::BlockNumber,
<T as Config>::Value,
>;