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migrations.go
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migrations.go
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package keeper
import (
"github.com/cosmos/cosmos-sdk/runtime"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/slashing/exported"
v2 "github.com/cosmos/cosmos-sdk/x/slashing/migrations/v2"
v3 "github.com/cosmos/cosmos-sdk/x/slashing/migrations/v3"
v4 "github.com/cosmos/cosmos-sdk/x/slashing/migrations/v4"
)
// Migrator is a struct for handling in-place store migrations.
type Migrator struct {
keeper Keeper
legacySubspace exported.Subspace
}
// NewMigrator returns a new Migrator.
func NewMigrator(keeper Keeper, ss exported.Subspace) Migrator {
return Migrator{keeper: keeper, legacySubspace: ss}
}
// Migrate1to2 migrates from version 1 to 2.
func (m Migrator) Migrate1to2(ctx sdk.Context) error {
return v2.MigrateStore(ctx, m.keeper.storeService)
}
// Migrate2to3 migrates the x/slashing module state from the consensus
// version 2 to version 3. Specifically, it takes the parameters that are currently stored
// and managed by the x/params modules and stores them directly into the x/slashing
// module state.
func (m Migrator) Migrate2to3(ctx sdk.Context) error {
store := runtime.KVStoreAdapter(m.keeper.storeService.OpenKVStore(ctx))
return v3.Migrate(ctx, store, m.legacySubspace, m.keeper.cdc)
}
// Migrate3to4 migrates the x/slashing module state from the consensus
// version 3 to version 4. Specifically, it migrates the validator missed block
// bitmap.
func (m Migrator) Migrate3to4(ctx sdk.Context) error {
store := runtime.KVStoreAdapter(m.keeper.storeService.OpenKVStore(ctx))
params, err := m.keeper.GetParams(ctx)
if err != nil {
return err
}
return v4.Migrate(ctx, m.keeper.cdc, store, params)
}