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Simplified the reward distribution algorithm.
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@murisi
murisi committed Feb 22, 2024
1 parent 53dca3d commit 071accd
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Showing 3 changed files with 87 additions and 126 deletions.
139 changes: 50 additions & 89 deletions crates/shielded_token/src/conversion.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -310,97 +310,58 @@ where
digit,
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),
)
.unwrap()
+ MaspAmount::from_pair(
new_asset,
new_normed_inflation as i128,
)
.unwrap())
.into_storage_result()?;

// 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))
.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
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();
);
// 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;

if *token == native_token {
// 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))
.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;
*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
});
}
}
// Add a conversion from the previous asset type
Expand Down
26 changes: 13 additions & 13 deletions crates/tests/src/integration/masp.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -317,7 +317,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.359578"));
assert!(captured.contains("nam: 0.358292"));

// Assert NAM balance at MASP pool is an accumulation of
// rewards from both the shielded BTC and shielded ETH
Expand All @@ -337,7 +337,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.671183"));
assert!(captured.contains("nam: 0.671201"));

// Wait till epoch boundary
node.next_epoch();
Expand Down Expand Up @@ -403,7 +403,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.719514"));
assert!(captured.contains("nam: 0.715879"));

node.next_epoch();

Expand All @@ -425,7 +425,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 1.58943"));
assert!(captured.contains("nam: 1.589461"));

// Wait till epoch boundary
node.next_epoch();
Expand Down Expand Up @@ -488,7 +488,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 1.113911"));
assert!(captured.contains("nam: 1.108944"));

// Assert NAM balance at MASP pool is
// the accumulation of rewards from the shielded assets (BTC and ETH)
Expand All @@ -508,7 +508,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 1.83743"));
assert!(captured.contains("nam: 1.837461"));

// Wait till epoch boundary
node.next_epoch();
Expand All @@ -532,7 +532,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 1.113911"));
assert!(captured.contains("nam: 1.108944"));

// Assert NAM balance at VK(B) is the rewards dispensed earlier
// (since VK(A) has no shielded assets, no further rewards should
Expand All @@ -553,7 +553,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.719514"));
assert!(captured.contains("nam: 0.715879"));

// Assert NAM balance at MASP pool is
// the accumulation of rewards from the shielded assets (BTC and ETH)
Expand All @@ -573,7 +573,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 1.83743"));
assert!(captured.contains("nam: 1.837461"));

// Wait till epoch boundary to prevent conversion expiry during transaction
// construction
Expand All @@ -592,7 +592,7 @@ fn masp_incentives() -> Result<()> {
"--token",
NAM,
"--amount",
"0.719514",
"0.715879",
"--signing-keys",
BERTHA_KEY,
"--node",
Expand All @@ -617,7 +617,7 @@ fn masp_incentives() -> Result<()> {
"--token",
NAM,
"--amount",
"1.113911",
"1.108944",
"--signing-keys",
ALBERT_KEY,
"--node",
Expand Down Expand Up @@ -681,7 +681,7 @@ fn masp_incentives() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.004005"));
assert!(captured.contains("nam: 0.012638"));

Ok(())
}
Expand Down Expand Up @@ -1872,7 +1872,7 @@ fn dynamic_assets() -> Result<()> {
)
});
assert!(captured.result.is_ok());
assert!(captured.contains("nam: 0.075825"));
assert!(captured.contains("nam: 0.07575"));

Ok(())
}
48 changes: 24 additions & 24 deletions wasm/checksums.json
View file
Original file line number Diff line number Diff line change
@@ -1,26 +1,26 @@
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