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Support variable session length for Rococo chains at genesis (#2167)

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This pr adds support to change the session length of a Rococo chain at
genesis. This is rather useful because Rococo has a session length of
1 hour, while on rococo-local you will now get 1 minute. This improves
the dev experience, because a parachain is only going live at the
start of a new session.
This commit is contained in:
Bastian Köcher
2020-12-24 21:25:15 +01:00
committed by GitHub
parent 2557181ecf
commit bb856698a4
5 changed files with 44 additions and 9 deletions
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polkadot/runtime/rococo/src/constants.rs
+3 -1
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@@ -33,7 +33,9 @@ pub mod time {
use primitives::v0::{Moment, BlockNumber};
pub const MILLISECS_PER_BLOCK: Moment = 6000;
pub const SLOT_DURATION: Moment = MILLISECS_PER_BLOCK;
pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 1 * HOURS;
frame_support::parameter_types! {
pub storage EpochDurationInBlocks: BlockNumber = 1 * HOURS;
}
// These time units are defined in number of blocks.
pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);