constants.rs 1.98 KB
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// Copyright 2019-2020 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.

// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.

/// Money matters.
pub mod currency {
	use primitives::Balance;

	pub const DOTS: Balance = 1_000_000_000_000;
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	pub const DOLLARS: Balance = DOTS;
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	pub const CENTS: Balance = DOLLARS / 100;
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	pub const MILLICENTS: Balance = CENTS / 1_000;
}

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/// Time and blocks.
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pub mod time {
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	use primitives::{Moment, BlockNumber};
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	// Kusama & mainnet
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	pub const MILLISECS_PER_BLOCK: Moment = 6000;
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	// Testnet
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//	pub const MILLISECS_PER_BLOCK: Moment = 1000;
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	pub const SLOT_DURATION: Moment = MILLISECS_PER_BLOCK;
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	// Kusama
	pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 1 * HOURS;
	// Mainnet
//	pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 4 * HOURS;
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	// Testnet
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//	pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 10 * MINUTES;
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	// These time units are defined in number of blocks.
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	pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
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	pub const HOURS: BlockNumber = MINUTES * 60;
	pub const DAYS: BlockNumber = HOURS * 24;
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	// 1 in 4 blocks (on average, not counting collisions) will be primary babe blocks.
	pub const PRIMARY_PROBABILITY: (u64, u64) = (1, 4);
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}

/// Fee-related.
pub mod fee {
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	pub use sp_runtime::Perbill;
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	/// The block saturation level. Fees will be updates based on this value.
	pub const TARGET_BLOCK_FULLNESS: Perbill = Perbill::from_percent(25);
}