# ✨ 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.
## Overview
This PR integrates Substrate's `pallet-migrations` into all DataHaven
runtimes (mainnet, stagenet, testnet) to enable robust multi-block
migration capabilities. This infrastructure allows complex runtime
upgrades to be executed across multiple blocks while maintaining chain
stability and providing governance controls.
## What Changed
### Core Integration
- **Added `pallet-migrations` dependency** across all runtime
configurations
- **Integrated migration pallet** as pallet index 39 in all runtimes
- **Created shared migration configuration** in
`datahaven-runtime-common`
### Runtime Configuration
- **Mainnet, Stagenet, and Testnet** now include identical migration
configurations
- **MaxServiceWeight** parameter set to 75% of max block weight for safe
migration execution
- **Migration cursor limits** configured (65KB max cursor, 256B max
identifier)
- **Failure handling** configured to freeze the chain on migration
failures (similar to Moonbeam's maintenance mode)
## Future Work
- [ ] Add custom failure handler (safe mode) to replace chain freeze
- [ ] Generate DataHaven-specific benchmarks for migration weights
---------
Co-authored-by: undercover-cactus <lola@moonsonglabs.com>
## Add proxy call filtering for EVM accounts
This PR implements a `NormalCallFilter` following moonbeam filters.
### Changes
- Added `NormalCallFilter` implementation across all runtime
configurations (mainnet, stagenet, testnet)
- Configured the filter as `BaseCallFilter` in `frame_system::Config`
### Security Improvements
The filter blocks:
- **Proxy calls to EVM accounts** - Prevents proxying to smart contracts
- **Direct EVM pallet calls** - Prevents reentrancy from precompiles
(following Moonbeam's security pattern)
This aligns with best practices from Moonbeam and addresses known
security considerations around EVM/Substrate interaction patterns.
---------
Co-authored-by: Steve Degosserie <723552+stiiifff@users.noreply.github.com>
## Summary
This PR integrates the Substrate Proxy pallet into DataHaven runtimes
(testnet, stagenet, mainnet) with comprehensive test coverage. The proxy
pallet enables account delegation functionality, allowing accounts to
authorize other accounts to execute calls on their behalf with
configurable permissions.
## Changes
### Proxy Pallet Integration
- **Added proxy pallet** to all three DataHaven runtimes (testnet,
stagenet, mainnet)
- **Configured custom ProxyType enum** with DataHaven-specific proxy
types:
- `Any` - Unrestricted proxy access
- `NonTransfer` - All calls except balance transfers
- `Governance` - Governance and utility calls only
- `Staking` - Staking operations (placeholder)
- `CancelProxy` - Proxy announcement cancellation
- `Balances` - Balance transfer operations only
- `IdentityJudgement` - Identity judgement operations
- `SudoOnly` - Privileged sudo operations only
### Runtime Configuration
- **Integrated pallet-proxy** into runtime construction macros
- **Configured proxy deposits** (base + per-proxy fees)
- **Set proxy limits** (maximum proxies per account)
- **Implemented InstanceFilter** for call filtering per proxy type
- **Added proxy pallet to runtime APIs** and metadata
### Comprehensive Test Suite
- `operator/runtime/testnet/tests/proxy.rs` - 24 comprehensive proxy
tests
- `operator/runtime/stagenet/tests/proxy.rs` - 24 comprehensive proxy
tests
- `operator/runtime/mainnet/tests/proxy.rs` - 24 comprehensive proxy
tests
- Updated `lib.rs` files in all three runtimes to include proxy test
modules
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- New Features
- Enable account proxies across mainnet, stagenet, and testnet with
configurable types, delays, and per-type call permissions.
- Support anonymous (pure) proxies, proxy announcements with delays, and
deposit/limit parameters for proxy management.
- Tests
- Add comprehensive integration tests covering proxy lifecycle,
filtering, pure proxies, announcements, batching, chaining, multisig,
identity, and sudo paths.
- Test builder now supports optional sudo setup.
- Chores
- Add benchmarking, weights, and try-runtime support for proxies.
- Update internal package metadata version.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Ahmad Kaouk <ahmadkaouk.93@gmail.com>
Co-authored-by: Ahmad Kaouk <56095276+ahmadkaouk@users.noreply.github.com>
### Summary
- Implement native token transfers from DataHaven to Ethereum using
Snowbridge infrastructure
- Add comprehensive datahaven-native-transfer pallet with lock-and-mint
mechanism for cross-chain token representation
### Key Features
**New Pallet: datahaven-native-transfer**
- Cross-chain transfers: Transfer DataHaven native tokens to Ethereum
addresses via `transfer_to_ethereum extrinsic`
- Token locking mechanism: Secure token storage in deterministic
Ethereum sovereign account during transfers
- Fee management: Required fees for all transfers to compensate relayers
and prevent spam
- Emergency controls: Pause/unpause functionality
- Token registration: Integration with Snowbridge's token registration
for native token identification
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Introduced the DataHaven Native Transfer pallet enabling secure
cross-chain transfers of DataHaven native tokens to and from Ethereum
via Snowbridge.
- Added token locking on DataHaven, minting on Ethereum, and mandatory
fee collection to cover gas costs and incentivize relayers.
- Implemented pause and unpause controls for emergency management of
token transfers.
- **Configuration**
- Integrated the new pallet into mainnet, stagenet, and testnet runtimes
with updated network, account, and treasury settings.
- Added Ethereum sovereign account constants and native token ID support
for optimized cross-chain operations.
- **Documentation**
- Added comprehensive README and inline documentation detailing pallet
features, extrinsics, events, errors, and security considerations.
- **Tests**
- Added extensive unit and integration tests covering token transfers,
native token registration, fee handling, pause functionality, and event
validation across all supported networks.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Steve Degosserie <723552+stiiifff@users.noreply.github.com>
