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https://github.com/datahaven-xyz/datahaven
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782321e5d0
# ✨ Implement Dynamic Fee Adjustment Mechanism
## Overview
Implements a dynamic fee adjustment mechanism, replacing the constant
fee multiplier with an adaptive multiplier that responds to network
congestion, following Moonbeam's pattern.
## Changes
- Replaces `ConstFeeMultiplier` with `TargetedFeeAdjustment` across all
runtime configurations (mainnet, stagenet, testnet)
- Implements an EIP-1559-like slow-adjusting fee mechanism that prevents
DoS attacks by adjusting fees based on block fullness
- **Configurable Parameters**:
- Target block fullness: 35%
- Adjustment variable: 4/1000 (responds in ~1 hour at extreme
congestion)
- Two modes:
- `SlowAdjustingFeeUpdate` for mainnet and testnet.
- `FastAdjustingFeeUpdate` for stagenet.
- Adds tests coverage for different fee scenarios
## Technical Details
The fee adjustment algorithm works as follows:
```
diff = (previous_block_weight - target) / maximum_block_weight
next_multiplier = prev_multiplier * (1 + (v * diff) + ((v * diff)^2 / 2))
assert(next_multiplier > min)
```
**Where:**
- `v` = AdjustmentVariable
- `target` = TargetBlockFullness
- `min` = MinimumMultiplier
`SlowAdjustingFeeUpdate` sets a minimum multiplier of `1x` for a
conservative fee adjustment, while `FastAdjustingFeeUpdate` sets it to
`0.1x`, which is mainly used for dev networks / testing.
63 lines
1.9 KiB
Rust
63 lines
1.9 KiB
Rust
//! Integration tests for DataHaven mainnet runtime
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pub mod common;
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mod fee_adjustment;
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pub mod governance;
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mod migrations;
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mod native_token_transfer;
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mod proxy;
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mod safe_mode_tx_pause;
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use common::*;
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use datahaven_mainnet_runtime::{
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currency::HAVE, Balances, Runtime, System, UncheckedExtrinsic, VERSION,
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};
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use sp_core::H160;
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use sp_runtime::transaction_validity::{
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InvalidTransaction, TransactionSource, TransactionValidityError,
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};
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use sp_transaction_pool::runtime_api::runtime_decl_for_tagged_transaction_queue::TaggedTransactionQueueV3;
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// Runtime Tests
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#[test]
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fn test_runtime_version_and_metadata() {
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ExtBuilder::default().build().execute_with(|| {
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assert!(!VERSION.spec_name.is_empty());
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assert!(VERSION.spec_version > 0);
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assert_eq!(System::block_number(), 1);
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});
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}
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#[test]
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fn test_balances_functionality() {
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ExtBuilder::default()
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.with_balances(vec![(account_id(ALICE), 2_000_000 * HAVE)])
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.build()
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.execute_with(|| {
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assert_eq!(Balances::free_balance(&account_id(ALICE)), 2_000_000 * HAVE);
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});
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}
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#[test]
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fn validate_transaction_fails_on_filtered_call() {
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ExtBuilder::default().build().execute_with(|| {
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let xt = UncheckedExtrinsic::new_bare(
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pallet_evm::Call::<Runtime>::call {
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source: H160::default(),
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target: H160::default(),
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input: Vec::new(),
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value: sp_core::U256::zero(),
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gas_limit: 21000,
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max_fee_per_gas: sp_core::U256::zero(),
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max_priority_fee_per_gas: Some(sp_core::U256::zero()),
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nonce: None,
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access_list: Vec::new(),
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}
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.into(),
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);
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assert_eq!(
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Runtime::validate_transaction(TransactionSource::External, xt, Default::default(),),
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Err(TransactionValidityError::Invalid(InvalidTransaction::Call)),
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);
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});
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}
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