mirror of
https://github.com/0glabs/0g-chain.git
synced 2024-12-29 09:45:18 +00:00
58 lines
2.1 KiB
Go
58 lines
2.1 KiB
Go
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package v0_16
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import (
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"fmt"
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"github.com/0glabs/0g-chain/x/bep3/types"
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)
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// resetSwapForZeroHeight updates swap expiry/close heights to work when the chain height is reset to zero.
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func resetSwapForZeroHeight(swap types.AtomicSwap) types.AtomicSwap {
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switch status := swap.Status; status {
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case types.SWAP_STATUS_COMPLETED:
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// Reset closed block to one so completed swaps are not held in long term storage too long.
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swap.ClosedBlock = 1
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case types.SWAP_STATUS_OPEN:
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switch dir := swap.Direction; dir {
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case types.SWAP_DIRECTION_INCOMING:
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// Open incoming swaps can be expired safely. They haven't been claimed yet, so the outgoing swap on bnb will just timeout.
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// The chain downtime cannot be accurately predicted, so it's easier to expire than to recalculate a correct expire height.
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swap.ExpireHeight = 1
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swap.Status = types.SWAP_STATUS_EXPIRED
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case types.SWAP_DIRECTION_OUTGOING:
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// Open outgoing swaps should be extended to allow enough time to claim after the chain launches.
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// They cannot be expired as there could be an open/claimed bnb swap.
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swap.ExpireHeight = 1 + 24686 // default timeout used when sending swaps from 0g
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case types.SWAP_DIRECTION_UNSPECIFIED:
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default:
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panic(fmt.Sprintf("unknown bep3 swap direction '%s'", dir))
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}
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case types.SWAP_STATUS_EXPIRED:
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// Once a swap is marked expired the expire height is ignored. However reset to 1 to be sure.
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swap.ExpireHeight = 1
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case types.SWAP_STATUS_UNSPECIFIED:
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default:
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panic(fmt.Sprintf("unknown bep3 swap status '%s'", status))
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}
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return swap
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}
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func resetSwapsForZeroHeight(oldSwaps types.AtomicSwaps) types.AtomicSwaps {
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newSwaps := make(types.AtomicSwaps, len(oldSwaps))
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for i, oldSwap := range oldSwaps {
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swap := resetSwapForZeroHeight(oldSwap)
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newSwaps[i] = swap
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}
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return newSwaps
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}
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func Migrate(oldState types.GenesisState) *types.GenesisState {
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return &types.GenesisState{
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PreviousBlockTime: oldState.PreviousBlockTime,
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Params: oldState.Params,
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AtomicSwaps: resetSwapsForZeroHeight(oldState.AtomicSwaps),
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Supplies: oldState.Supplies,
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}
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}
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