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Tsvetomir Dimitrov
90234543f3
This PR notifies broker pallet for any parachain slot swaps performed on the relay chain. This is achieved by registering an `OnSwap` for the the `coretime` pallet. The hook sends XCM message to the broker chain and invokes a new extrinsic `swap_leases` which updates `Leases` storage item (which keeps the legacy parachain leases). I made two assumptions in this PR: 1. [`Leases`](https://github.com/paritytech/polkadot-sdk/blob/4987d7982461e2e5ffe219cdf71ec697284cea7c/substrate/frame/broker/src/lib.rs#L120) in `broker` pallet and [`Leases`](https://github.com/paritytech/polkadot-sdk/blob/4987d7982461e2e5ffe219cdf71ec697284cea7c/polkadot/runtime/common/src/slots/mod.rs#L118) in `slots` pallet are in sync. 2. `swap_leases` extrinsic from `broker` pallet can be triggered only by root or by the XCM message from the relay chain. If not - the extrinsic will generate an error and do nothing. As a side effect from the changes `OnSwap` trait is moved from runtime/common/traits.rs to runtime/parachains. Otherwise it is not accessible from `broker` pallet. Closes https://github.com/paritytech/polkadot-sdk/issues/3552 TODOs: - [x] Weights - [x] Tests --------- Co-authored-by: command-bot <> Co-authored-by: eskimor <eskimor@users.noreply.github.com> Co-authored-by: Bastian Köcher <git@kchr.de>
Rococo: v2.1
Rococo is a testnet runtime with no stability guarantees.
How to build rococo runtime
EpochDurationInBlocks parameter is configurable via ROCOCO_EPOCH_DURATION environment variable. To build wasm
runtime blob with customized epoch duration the following command shall be executed:
ROCOCO_EPOCH_DURATION=10 ./polkadot/scripts/build-only-wasm.sh rococo-runtime /path/to/output/directory/
How to run rococo-local
The Cumulus Tutorial details building, starting, and
testing rococo-local and parachains connecting to it.
How to register a parachain on the Rococo testnet
The parachain registration process on the public Rococo testnet is also outlined.