mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-19 12:21:02 +00:00
Gonçalo Pestana
614aa31bf7
**Note**: This is a lift-and-shift PR from the old substrate and polkadot repos, both PRs have been reviewed and audited (https://github.com/paritytech/substrate/pull/13983, https://github.com/paritytech/polkadot/pull/7140) --- This PR implements a generic `BaseDeposit` calculation for signed submissions, based on the size of the submission queue. It adds a new associated type to EPM's config, `type SignedDepositBase`, that implements `Convert<usize, BalanceOf<T>>`, which is used to calculate the base deposit for signed submissions based on the size of the signed submissions queue. `struct GeometricDepositBase<Balance, Fixed, Inc>` implements the convert trait so that the deposit value increases as a geometric progression. The deposit base is calculated by `deposit_base = fixed_deposit_base * (1 + increase_factor)^n`, where `n` is the term of the progression (i.e. the number of signed submissions in the queue). `Fixed` and `Inc` generic params are getters for `Balance` and `IncreaseFactor` to compute the geometric progression. If `IncreaseFactor = 0`, then the signed deposit is constant and equal to `Fixed` regardless of the size of the queue. ### Runtime configs In Kusama, the progression with 10% increase without changing the current signed fixed deposit is: (term == size of the queue) Term 1: `1,333,333,332,000` Term 2: `1,333,333,332,000 * 1.10 = 1,466,666,665,200` Term 3: `1,333,333,332,000 * 1.10^2 = 1,613,333,331,200` Term 4: `1,333,333,332,000 * 1.10^3 = 1,774,666,664,320` Term 5: `1,333,333,332,000 * 1.10^4 = 1,952,133,330,752` Term 6: `1,333,333,332,000 * 1.10^5 = 2,147,346,663,827.20` Term 7: `1,333,333,332,000 * 1.10^6 = 2,362,081,330,210.92` Term 8: `1,333,333,332,000 * 1.10^7 = 2,598,289,463,231.01` Term 9: `1,333,333,332,000 * 1.10^8 = 2,858,118,409,554.11` Term 10: `1,333,333,332,000 * 1.10^9 = 3,143,930,250,509.52` Westend: Term 1: `2,000,000,000,000` Term 2: `2,000,000,000,000 * 1.10 = 2,200,000,000,000` Term 3: `2,000,000,000,000 * 1.10^2 = 2,420,000,000,000` Term 4: `2,000,000,000,000 * 1.10^3 = 2,662,000,000,000` Term 5: `2,000,000,000,000 * 1.10^4 = 2,928,200,000,000` Term 6: `2,000,000,000,000 * 1.10^5 = 3,221,020,000,000` Term 7: `2,000,000,000,000 * 1.10^6 = 3,543,122,000,000` Term 8: `2,000,000,000,000 * 1.10^7 = 3,897,434,200,000` Term 9: `2,000,000,000,000 * 1.10^8 = 4,287,177,620,000` Term 10: `2,000,000,000,000 * 1.10^9 = 4,715,895,382,000` and in Polkadot, the deposit increase is disabled in the current state of the PR, as the increase factor is 0% -- so nothing changes from the current behaviour. Closes https://github.com/paritytech-secops/srlabs_findings/issues/189
FRAME
The FRAME development environment provides modules (called "pallets") and support libraries that you can use, modify, and extend to build the runtime logic to suit the needs of your blockchain.
Documentation
https://docs.substrate.io/reference/frame-pallets/