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Unstuck Snowbridge #313

Merged
merged 28 commits into from
May 19, 2024
Merged

Unstuck Snowbridge #313

merged 28 commits into from
May 19, 2024

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claravanstaden
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@claravanstaden claravanstaden commented May 17, 2024 •
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Upgrades Snowbridge with an Ethereum client fixes:

Adds a migration to reset the Ethereum checkpoint. Will be reset again to the moment recent checkpoint before merged.

TODO:

  • Check migration works
  • Check converting Sync Committee to prepared keys is OK for a migration

@claravanstaden claravanstaden mentioned this pull request May 17, 2024
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acatangiu
acatangiu reviewed May 17, 2024
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system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_unstuck.rs

pub struct UnstuckSnowbridge;

impl OnRuntimeUpgrade for UnstuckSnowbridge {
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You also need to add it to the list of migrations (example)

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Thanks for the reminder! b13f7a9

@claravanstaden
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@acatangiu the migration is roughly doing the same as the force_checkpoint extrinsic. It looks like an expensive operation compared to the P<>K bridge migration - the weight is Weight::from_parts(101_492_831_000, 0). Do you think this will be a problem? We'll test of course but just wanted to also ask your opinion.

acatangiu
acatangiu reviewed May 17, 2024
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system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_unstuck.rs Outdated Show resolved Hide resolved
system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_unstuck.rs Outdated Show resolved Hide resolved
system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_unstuck.rs Outdated Show resolved Hide resolved
system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_unstuck.rs Outdated
}

fn is_bridge_stuck() -> bool {
LatestFinalizedBlockRoot::<Runtime>::get() == LAST_IMPORTED_BEACON_HEADER.into()
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We expect that this LAST_IMPORTED_BEACON_HEADER will not be reimported, yes?

(I guess the checkpoint is from a block newer than that)

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@acatangiu the migration is roughly doing the same as the force_checkpoint extrinsic. It looks like an expensive operation compared to the P<>K bridge migration - the weight is Weight::from_parts(101_492_831_000, 0). Do you think this will be a problem? We'll test of course but just wanted to also ask your opinion.

Should be ok as long as it fits a block.

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vgeddes commented May 17, 2024

@acatangiu the migration is roughly doing the same as the force_checkpoint extrinsic. It looks like an expensive operation compared to the P<>K bridge migration - the weight is Weight::from_parts(101_492_831_000, 0). Do you think this will be a problem? We'll test of course but just wanted to also ask your opinion.

Should be ok as long as it fits a block.

Yeah this is fine, is well below the block limit. And we know it works because our initial governance proposal already executed a force_checkpoint successfully on BridgeHub.

@claravanstaden claravanstaden marked this pull request as ready for review May 17, 2024 17:23
vgeddes
vgeddes approved these changes May 17, 2024
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+1

acatangiu
acatangiu approved these changes May 18, 2024
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Migration code looks good, also validated that the new checkpoint leads to https://beaconscan.com/slot/9094528.

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/merge

@fellowship-merge-bot fellowship-merge-bot bot merged commit 2f8a10e into polkadot-fellows:main May 19, 2024
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@acatangiu acatangiu acatangiu approved these changes

@joepetrowski joepetrowski joepetrowski approved these changes

@alistair-singh alistair-singh alistair-singh approved these changes

@vgeddes vgeddes vgeddes approved these changes

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@claravanstaden @acatangiu @vgeddes @joepetrowski @alistair-singh @yrong