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Simplified the reward distribution algorithm.
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@murisi
murisi committed Feb 22, 2024
1 parent 53dca3d commit 0d1f7d9
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143 changes: 54 additions & 89 deletions crates/shielded_token/src/conversion.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,24 @@ where
.normed_inflation
.get_or_insert(ref_inflation);

if *token == native_token {
// Save the new normed inflation
*normed_inflation += (((Uint::from(*normed_inflation)
* Uint::from(reward.0))
+ Uint::from(reward.1 - 1))
/ reward.1)
.try_into()
.unwrap_or_else(|_| {
tracing::warn!(
"MASP reward for {} assumed to be 0 because \
the computed value is too large. Please \
check the inflation parameters.",
token
);
0u128

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});
}

for digit in MaspDigitPos::iter() {
// Provide an allowed conversion from previous timestamp. The
// negative sign allows each instance of the old asset to be
Expand All @@ -311,97 +329,44 @@ where
Some(wl_storage.storage.block.epoch),
)
.into_storage_result()?;
if *token == native_token {
// The amount that will be given of the new native token for
// every amount of the native token given in the
// previous epoch
let new_normed_inflation = Uint::from(*normed_inflation)
.checked_add(
(Uint::from(*normed_inflation) * Uint::from(reward.0))
/ reward.1,
)
.and_then(|x| x.try_into().ok())
.unwrap_or_else(|| {
tracing::warn!(
"MASP reward for {} assumed to be 0 because the \
computed value is too large. Please check the \
inflation parameters.",
token
);
*normed_inflation
});
// The conversion is computed such that if consecutive
// conversions are added together, the
// intermediate native tokens cancel/
// telescope out
current_convs.insert(
(token.clone(), denom, digit),
(MaspAmount::from_pair(
old_asset,
-(*normed_inflation as i128),
)

// Express the inflation reward in real terms, that is, with
// respect to the native asset in the zeroth
// epoch
let real_reward = ((Uint::from(reward.0)
* Uint::from(ref_inflation))
/ *normed_inflation)
.try_into()
.unwrap_or_else(|_| {
tracing::warn!(
"MASP reward for {} assumed to be 0 because the \
computed value is too large. Please check the \
inflation parameters.",
token
);
0u128

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});
// The conversion is computed such that if consecutive
// conversions are added together, the
// intermediate tokens cancel/ telescope out
current_convs.insert(
(token.clone(), denom, digit),
(MaspAmount::from_pair(old_asset, -(reward.1 as i128))
.unwrap()
+ MaspAmount::from_pair(
new_asset,
new_normed_inflation as i128,
)
.unwrap())
.into(),
);
// Operations that happen exactly once for each token
if digit == MaspDigitPos::Three {
// The reward for each reward.1 units of the current asset
// is reward.0 units of the reward token
let native_reward =
addr_bal * (new_normed_inflation, *normed_inflation);
total_reward += native_reward
.0
.checked_add(native_reward.1)
.unwrap_or(Amount::max())
.checked_sub(addr_bal)
.unwrap_or_default();
// Save the new normed inflation
*normed_inflation = new_normed_inflation;
}
} else {
// Express the inflation reward in real terms, that is, with
// respect to the native asset in the zeroth
// epoch
let real_reward = ((Uint::from(reward.0)
* Uint::from(ref_inflation))
/ *normed_inflation)
.try_into()
.unwrap_or_else(|_| {
tracing::warn!(
"MASP reward for {} assumed to be 0 because the \
computed value is too large. Please check the \
inflation parameters.",
token
);
0u128
});
// The conversion is computed such that if consecutive
// conversions are added together, the
// intermediate tokens cancel/ telescope out
current_convs.insert(
(token.clone(), denom, digit),
(MaspAmount::from_pair(old_asset, -(reward.1 as i128))
+ MaspAmount::from_pair(new_asset, reward.1 as i128)
.unwrap()
+ MaspAmount::from_pair(new_asset, reward.1 as i128)
.unwrap()
+ MaspAmount::from_pair(
reward_assets[digit as usize],
real_reward as i128,
)
.unwrap())
.into(),
);
// Operations that happen exactly once for each token
if digit == MaspDigitPos::Three {
// The reward for each reward.1 units of the current asset
// is reward.0 units of the reward token
total_reward += (addr_bal * (reward.0, reward.1)).0;
}
+ MaspAmount::from_pair(
reward_assets[digit as usize],
real_reward as i128,
)
.unwrap())
.into(),
);
// Operations that happen exactly once for each token
if digit == MaspDigitPos::Three {
// The reward for each reward.1 units of the current asset
// is reward.0 units of the reward token
total_reward += (addr_bal * (reward.0, reward.1)).0;
}
// Add a conversion from the previous asset type
wl_storage.storage.conversion_state.assets.insert(
Expand Down
48 changes: 24 additions & 24 deletions wasm/checksums.json
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Original file line number Diff line number Diff line change
@@ -1,26 +1,26 @@
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}

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