cosmos-sdk/x/evidence/genesis.go

54 lines
1.4 KiB
Go

package evidence
import (
"fmt"
"github.com/gogo/protobuf/proto"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/evidence/exported"
"github.com/cosmos/cosmos-sdk/x/evidence/keeper"
"github.com/cosmos/cosmos-sdk/x/evidence/types"
)
// InitGenesis initializes the evidence module's state from a provided genesis
// state.
func InitGenesis(ctx sdk.Context, k keeper.Keeper, gs *types.GenesisState) {
if err := gs.Validate(); err != nil {
panic(fmt.Sprintf("failed to validate %s genesis state: %s", types.ModuleName, err))
}
for _, e := range gs.Evidence {
evi, ok := e.GetCachedValue().(exported.Evidence)
if !ok {
panic("expected evidence")
}
if _, ok := k.GetEvidence(ctx, evi.Hash()); ok {
panic(fmt.Sprintf("evidence with hash %s already exists", evi.Hash()))
}
k.SetEvidence(ctx, evi)
}
}
// ExportGenesis returns the evidence module's exported genesis.
func ExportGenesis(ctx sdk.Context, k keeper.Keeper) *types.GenesisState {
e := k.GetAllEvidence(ctx)
evidence := make([]*codectypes.Any, len(e))
for i, evi := range e {
msg, ok := evi.(proto.Message)
if !ok {
panic(fmt.Errorf("cannot proto marshal %T", evi))
}
any, err := codectypes.NewAnyWithValue(msg)
if err != nil {
panic(err)
}
evidence[i] = any
}
return &types.GenesisState{
Evidence: evidence,
}
}