49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package keeper
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import (
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"context"
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"cosmossdk.io/x/mint/types"
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)
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// Migrator is a struct for handling in-place state migrations.
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type Migrator struct {
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keeper *Keeper
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}
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// NewMigrator returns Migrator instance for the state migration.
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func NewMigrator(k *Keeper) Migrator {
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return Migrator{
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keeper: k,
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}
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}
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// Migrate1to2 migrates the x/mint module state from the consensus version 1 to
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// version 2. Specifically, it takes the parameters that are currently stored
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// and managed by the x/params modules and stores them directly into the x/mint
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// module state.
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func (m Migrator) Migrate1to2(_ context.Context) error {
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return nil
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}
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// Migrate2to3 migrates the x/mint module state from the consensus version 2 to
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// version 3.
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func (m Migrator) Migrate2to3(ctx context.Context) error {
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params, err := m.keeper.Params.Get(ctx)
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if err != nil {
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return err
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}
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// Initialize the new MaxSupply parameter with the default value
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defaultParams := types.DefaultParams()
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params.MaxSupply = defaultParams.MaxSupply
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// Set the updated params
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err = m.keeper.Params.Set(ctx, params)
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if err != nil {
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return err
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}
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return nil
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}
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