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T

georgepisaltu 7d735fc8ae Add simple collator election mechanism (#1340 )

Fixes https://github.com/paritytech/polkadot-sdk/issues/106

Port of cumulus PR https://github.com/paritytech/cumulus/pull/2960

This PR adds the ability to bid for collator slots even after the max
number of collators have already registered. This eliminates the first
come, first served mechanism that was in place before.

Key changes:
- added `update_bond` extrinsic to allow registered candidates to adjust
their bonds in order to dynamically control their bids
- added `take_candidate_slot` extrinsic to try to replace an already
existing candidate by bidding more than them
- candidates are now kept in a sorted list in the pallet storage, where
the top `DesiredCandidates` out of `MaxCandidates` candidates in the
list will be selected by the session pallet as collators
- if the candidacy bond is increased through a `set_candidacy_bond`
call, candidates which don't meet the new bond requirements are kicked


# Checklist

- [ ] My PR includes a detailed description as outlined in the
"Description" section above
- [ ] My PR follows the [labeling
requirements](https://github.com/paritytech/polkadot-sdk/blob/master/docs/CONTRIBUTING.md#process)
of this project (at minimum one label for `T` required)
- [ ] I have made corresponding changes to the documentation (if
applicable)
- [ ] I have added tests that prove my fix is effective or that my
feature works (if applicable)
- [ ] If this PR alters any external APIs or interfaces used by
Polkadot, the corresponding Polkadot PR is ready as well as the
corresponding Cumulus PR (optional)

---------

Signed-off-by: georgepisaltu <george.pisaltu@parity.io>

2023-11-14 18:22:30 +02:00

bridge-hub-kusama

Add simple collator election mechanism (#1340 )

2023-11-14 18:22:30 +02:00

bridge-hub-polkadot

Add simple collator election mechanism (#1340 )

2023-11-14 18:22:30 +02:00

bridge-hub-rococo

Add simple collator election mechanism (#1340 )

2023-11-14 18:22:30 +02:00

bridge-hub-westend

Add simple collator election mechanism (#1340 )

2023-11-14 18:22:30 +02:00

docs

BridgeHubKusama - initial setup - (chain_spec + basic runtime without any bridging pallets) (#1764 )

2022-12-02 14:06:39 +01:00

test-utils

[testnet] Allow governance to control fees for Rococo <> Westend bridge (#2139 )

2023-11-03 10:32:41 +02:00

README.md

pallet-xcm: enhance reserve_transfer_assets to support remote reserves (#1672 )

2023-11-13 17:16:55 +02:00

README.md

Bridge-hub Parachains

Bridge-hub Parachains

BridgeHub(s) are system parachains that will house trustless bridges from the local ecosystem to others. The current trustless bridges planned for the BridgeHub(s) are:

BridgeHubPolkadot system parachain:
1. Polkadot <-> Kusama bridge
2. Polkadot <-> Ethereum bridge (Snowbridge)
BridgeHubKusama system parachain:
1. Kusama <-> Polkadot bridge
2. Kusama <-> Ethereum bridge The high-level responsibilities of each bridge living on BridgeHub:
sync finality proofs between relay chains (or equivalent)
sync finality proofs between BridgeHub parachains
pass (XCM) messages between different BridgeHub parachains

Requirements for local run/testing

# Prepare empty directory for testing
mkdir -p ~/local_bridge_testing/bin
mkdir -p ~/local_bridge_testing/logs

---
# 1. Install zombienet
Go to: https://github.com/paritytech/zombienet/releases
Copy the apropriate binary (zombienet-linux) from the latest release to ~/local_bridge_testing/bin


---
# 2. Build polkadot binary

# If you want to test Kusama/Polkadot bridge, we need "sudo pallet + fast-runtime",
# so we need to use sudofi in polkadot directory.
#
# Install sudofi: (skip if already installed)
# cd <somewhere-outside-polkadot-sdk-git-repo-dir>
# git clone https://github.com/paritytech/parachain-utils.git
# cd parachain-utils # -> this is <parachain-utils-git-repo-dir>
# cargo build --release --bin sudofi
#
# cd <polkadot-sdk-git-repo-dir>/polkadot
# <parachain-utils-git-repo-dir>/target/release/sudofi

cd <polkadot-sdk-git-repo-dir>
cargo build --release --features fast-runtime --bin polkadot
cp target/release/polkadot ~/local_bridge_testing/bin/polkadot

cargo build --release --features fast-runtime --bin polkadot-prepare-worker
cp target/release/polkadot-prepare-worker ~/local_bridge_testing/bin/polkadot-prepare-worker

cargo build --release --features fast-runtime --bin polkadot-execute-worker
cp target/release/polkadot-execute-worker ~/local_bridge_testing/bin/polkadot-execute-worker


---
# 3. Build substrate-relay binary
git clone https://github.com/paritytech/parity-bridges-common.git
cd parity-bridges-common

# checkout desired branch or use master:
# git checkout -b master --track origin/master
# `polkadot-staging` (recommended) is stabilized and compatible for Cumulus releases
# `master` is latest development
git checkout -b polkadot-staging --track origin/polkadot-staging

cargo build --release -p substrate-relay
cp target/release/substrate-relay ~/local_bridge_testing/bin/substrate-relay


---
# 4. Build cumulus polkadot-parachain binary
cd <polkadot-sdk-git-repo-dir>

cargo build --release -p polkadot-parachain-bin
cp target/release/polkadot-parachain ~/local_bridge_testing/bin/polkadot-parachain
cp target/release/polkadot-parachain ~/local_bridge_testing/bin/polkadot-parachain-asset-hub

How to test local Rococo <-> Wococo bridge

Run Rococo/Wococo chains with zombienet

cd <polkadot-sdk-git-repo-dir>

# Rococo + BridgeHubRococo + AssetHub for Rococo (mirroring Kusama)
POLKADOT_BINARY_PATH=~/local_bridge_testing/bin/polkadot \
POLKADOT_PARACHAIN_BINARY_PATH=~/local_bridge_testing/bin/polkadot-parachain \
POLKADOT_PARACHAIN_BINARY_PATH_FOR_ASSET_HUB_ROCOCO=~/local_bridge_testing/bin/polkadot-parachain-asset-hub \
	~/local_bridge_testing/bin/zombienet-linux --provider native spawn ./cumulus/zombienet/bridge-hubs/bridge_hub_rococo_local_network.toml

cd <polkadot-sdk-git-repo-dir>

# Wococo + BridgeHubWococo + AssetHub for Wococo (mirroring Polkadot)
POLKADOT_BINARY_PATH=~/local_bridge_testing/bin/polkadot \
POLKADOT_PARACHAIN_BINARY_PATH=~/local_bridge_testing/bin/polkadot-parachain \
POLKADOT_PARACHAIN_BINARY_PATH_FOR_ASSET_HUB_WOCOCO=~/local_bridge_testing/bin/polkadot-parachain-asset-hub \
	~/local_bridge_testing/bin/zombienet-linux --provider native spawn ./cumulus/zombienet/bridge-hubs/bridge_hub_wococo_local_network.toml

Init bridge and run relayer between BridgeHubRococo and BridgeHubWococo

Accounts of BridgeHub parachains:

Bob is pallet owner of all bridge pallets

Run with script

cd <polkadot-sdk-git-repo-dir>

./cumulus/scripts/bridges_rococo_wococo.sh run-relay

Check relay-chain headers relaying:

Rococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8943#/chainstate - Pallet: bridgeWococoGrandpa - Keys: bestFinalized()
Wococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8945#/chainstate - Pallet: bridgeRococoGrandpa - Keys: bestFinalized()

Check parachain headers relaying:

Rococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8943#/chainstate - Pallet: bridgeWococoParachains - Keys: parasInfo(None)
Wococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8945#/chainstate - Pallet: bridgeRococoParachains - Keys: parasInfo(None)

Initialize configuration for transfer asset over bridge (ROCs/WOCs)

This initialization does several things:

creates ForeignAssets for wrappedROCs/wrappedWOCs
drips SA for AssetHubRococo on AssetHubWococo (and vice versa) which holds reserved assets on source chains

cd <polkadot-sdk-git-repo-dir>

./cumulus/scripts/bridges_rococo_wococo.sh init-asset-hub-rococo-local
./cumulus/scripts/bridges_rococo_wococo.sh init-bridge-hub-rococo-local
./cumulus/scripts/bridges_rococo_wococo.sh init-asset-hub-wococo-local
./cumulus/scripts/bridges_rococo_wococo.sh init-bridge-hub-wococo-local

Send messages - transfer asset over bridge (ROCs/WOCs)

Do (asset) transfers:

cd <polkadot-sdk-git-repo-dir>

# ROCs from Rococo's Asset Hub to Wococo's.
./cumulus/scripts/bridges_rococo_wococo.sh reserve-transfer-assets-from-asset-hub-rococo-local

cd <polkadot-sdk-git-repo-dir>

# WOCs from Wococo's Asset Hub to Rococo's.
./cumulus/scripts/bridges_rococo_wococo.sh reserve-transfer-assets-from-asset-hub-wococo-local

open explorers: (see zombienets)
- AssetHubRococo (see events xcmpQueue.XcmpMessageSent, polkadotXcm.Attempted) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:9910#/explorer
- BridgeHubRococo (see bridgeWococoMessages.MessageAccepted) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer
- BridgeHubWococo (see bridgeRococoMessages.MessagesReceived, xcmpQueue.XcmpMessageSent) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8945#/explorer
- AssetHubWococo (see foreignAssets.Issued, xcmpQueue.Success) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:9010#/explorer
- BridgeHubRocococ (see bridgeWococoMessages.MessagesDelivered) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer

Claim relayer's rewards on BridgeHubRococo and BridgeHubWococo

Accounts of BridgeHub parachains:

//Charlie is relayer account on BridgeHubRococo
//Charlie is relayer account on BridgeHubWococo

cd <polkadot-sdk-git-repo-dir>

# Claim rewards on BridgeHubWococo:
./cumulus/scripts/bridges_rococo_wococo.sh claim-rewards-bridge-hub-rococo-local

# Claim rewards on BridgeHubWococo:
./cumulus/scripts/bridges_rococo_wococo.sh claim-rewards-bridge-hub-wococo-local

open explorers: (see zombienets)
- BridgeHubRococo (see 2x bridgeRelayers.RewardPaid) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer
- BridgeHubWococo (see 2x bridgeRelayers.RewardPaid) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8945#/explorer

How to test local Rococo <-> Westend bridge

Run Rococo/Westend chains with zombienet

cd <polkadot-sdk-git-repo-dir>

# Rococo + BridgeHubRococo + AssetHub for Rococo (mirroring Kusama)
POLKADOT_BINARY_PATH=~/local_bridge_testing/bin/polkadot \
POLKADOT_PARACHAIN_BINARY_PATH=~/local_bridge_testing/bin/polkadot-parachain \
POLKADOT_PARACHAIN_BINARY_PATH_FOR_ASSET_HUB_ROCOCO=~/local_bridge_testing/bin/polkadot-parachain-asset-hub \
	~/local_bridge_testing/bin/zombienet-linux --provider native spawn ./cumulus/zombienet/bridge-hubs/bridge_hub_rococo_local_network.toml

cd <polkadot-sdk-git-repo-dir>

# Westend + BridgeHubWestend + AssetHub for Westend (mirroring Polkadot)
POLKADOT_BINARY_PATH=~/local_bridge_testing/bin/polkadot \
POLKADOT_PARACHAIN_BINARY_PATH=~/local_bridge_testing/bin/polkadot-parachain \
POLKADOT_PARACHAIN_BINARY_PATH_FOR_ASSET_HUB_WESTEND=~/local_bridge_testing/bin/polkadot-parachain-asset-hub \
	~/local_bridge_testing/bin/zombienet-linux --provider native spawn ./cumulus/zombienet/bridge-hubs/bridge_hub_westend_local_network.toml

Init bridge and run relayer between BridgeHubRococo and BridgeHubWestend

Accounts of BridgeHub parachains:

Bob is pallet owner of all bridge pallets

Run with script

cd <polkadot-sdk-git-repo-dir>

./cumulus/scripts/bridges_rococo_westend.sh run-relay

Check relay-chain headers relaying:

Rococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8943#/chainstate - Pallet: bridgeWestendGrandpa - Keys: bestFinalized()
Westend parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8945#/chainstate - Pallet: bridgeRococoGrandpa - Keys: bestFinalized()

Check parachain headers relaying:

Rococo parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8943#/chainstate - Pallet: bridgeWestendParachains - Keys: parasInfo(None)
Westend parachain: - https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A8945#/chainstate - Pallet: bridgeRococoParachains - Keys: parasInfo(None)

Initialize configuration for transfer asset over bridge (ROCs/WNDs)

This initialization does several things:

creates ForeignAssets for wrappedROCs/wrappedWNDs
drips SA for AssetHubRococo on AssetHubWestend (and vice versa) which holds reserved assets on source chains

cd <polkadot-sdk-git-repo-dir>

./cumulus/scripts/bridges_rococo_westend.sh init-asset-hub-rococo-local
./cumulus/scripts/bridges_rococo_westend.sh init-bridge-hub-rococo-local
./cumulus/scripts/bridges_rococo_westend.sh init-asset-hub-westend-local
./cumulus/scripts/bridges_rococo_westend.sh init-bridge-hub-westend-local

Send messages - transfer asset over bridge (ROCs/WNDs)

Do reserve-backed transfers:

cd <polkadot-sdk-git-repo-dir>

# ROCs from Rococo's Asset Hub to Westend's.
./cumulus/scripts/bridges_rococo_westend.sh reserve-transfer-assets-from-asset-hub-rococo-local

cd <polkadot-sdk-git-repo-dir>

# WNDs from Westend's Asset Hub to Rococo's.
./cumulus/scripts/bridges_rococo_westend.sh reserve-transfer-assets-from-asset-hub-westend-local

open explorers: (see zombienets)
- AssetHubRococo (see events xcmpQueue.XcmpMessageSent, polkadotXcm.Attempted) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:9910#/explorer
- BridgeHubRococo (see bridgeWestendMessages.MessageAccepted) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer
- BridgeHubWestend (see bridgeRococoMessages.MessagesReceived, xcmpQueue.XcmpMessageSent) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8945#/explorer
- AssetHubWestend (see foreignAssets.Issued, xcmpQueue.Success) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:9010#/explorer
- BridgeHubRocococ (see bridgeWestendMessages.MessagesDelivered) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer

Do reserve withdraw transfers: (when previous is finished)

cd <polkadot-sdk-git-repo-dir>

# wrappedWNDs from Rococo's Asset Hub to Westend's.
./cumulus/scripts/bridges_rococo_westend.sh withdraw-reserve-assets-from-asset-hub-rococo-local

cd <polkadot-sdk-git-repo-dir>

# wrappedROCs from Westend's Asset Hub to Rococo's.
./cumulus/scripts/bridges_rococo_westend.sh withdraw-reserve-assets-from-asset-hub-westend-local

Claim relayer's rewards on BridgeHubRococo and BridgeHubWestend

Accounts of BridgeHub parachains:

//Charlie is relayer account on BridgeHubRococo
//Charlie is relayer account on BridgeHubWestend

cd <polkadot-sdk-git-repo-dir>

# Claim rewards on BridgeHubWestend:
./cumulus/scripts/bridges_rococo_westend.sh claim-rewards-bridge-hub-rococo-local

# Claim rewards on BridgeHubWestend:
./cumulus/scripts/bridges_rococo_westend.sh claim-rewards-bridge-hub-westend-local

open explorers: (see zombienets)
- BridgeHubRococo (see 2x bridgeRelayers.RewardPaid) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8943#/explorer
- BridgeHubWestend (see 2x bridgeRelayers.RewardPaid) https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:8945#/explorer

How to test local BridgeHubKusama/BridgeHubPolkadot

TODO: see # !!! READ HERE above