44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package keeper
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import (
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"encoding/binary"
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"github.com/cosmos/cosmos-sdk/store/prefix"
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storetypes "github.com/cosmos/cosmos-sdk/store/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/upgrade/types"
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)
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// Migrator is a struct for handling in-place store migrations.
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type Migrator struct {
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keeper *Keeper
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}
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// NewMigrator returns a new Migrator.
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func NewMigrator(keeper *Keeper) Migrator {
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return Migrator{keeper: keeper}
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}
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// Migrate1to2 migrates from version 1 to 2.
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func (m Migrator) Migrate1to2(ctx sdk.Context) error {
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return migrateDoneUpgradeKeys(ctx, m.keeper.storeKey)
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}
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func migrateDoneUpgradeKeys(ctx sdk.Context, storeKey storetypes.StoreKey) error {
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store := ctx.KVStore(storeKey)
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oldDoneStore := prefix.NewStore(store, []byte{types.DoneByte})
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oldDoneStoreIter := oldDoneStore.Iterator(nil, nil)
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defer oldDoneStoreIter.Close()
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for ; oldDoneStoreIter.Valid(); oldDoneStoreIter.Next() {
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oldKey := oldDoneStoreIter.Key()
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upgradeName := string(oldKey)
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upgradeHeight := int64(binary.BigEndian.Uint64(oldDoneStoreIter.Value()))
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newKey := encodeDoneKey(upgradeName, upgradeHeight)
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store.Set(newKey, []byte{1})
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oldDoneStore.Delete(oldKey)
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}
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return nil
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}
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