85 lines
1.7 KiB
Go
85 lines
1.7 KiB
Go
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package staking
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import (
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crypto "github.com/tendermint/go-crypto"
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sdk "github.com/cosmos/cosmos-sdk/types"
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wire "github.com/cosmos/cosmos-sdk/wire"
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)
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type StakingMapper struct {
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key sdk.StoreKey
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cdc *wire.Codec
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}
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func NewMapper(key sdk.StoreKey) StakingMapper {
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cdc := wire.NewCodec()
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return StakingMapper{
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key: key,
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cdc: cdc,
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}
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}
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func (sm StakingMapper) getBondInfo(ctx sdk.Context, addr sdk.Address) *bondInfo {
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store := ctx.KVStore(sm.key)
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bz := store.Get(addr)
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if bz == nil {
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return nil
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}
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var bi bondInfo
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err := sm.cdc.UnmarshalBinary(bz, &bi)
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if err != nil {
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panic(err)
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}
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return &bi
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}
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func (sm StakingMapper) setBondInfo(ctx sdk.Context, addr sdk.Address, bi *bondInfo) {
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store := ctx.KVStore(sm.key)
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bz, err := sm.cdc.MarshalBinary(*bi)
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if err != nil {
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panic(err)
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}
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store.Set(addr, bz)
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}
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func (sm StakingMapper) deleteBondInfo(ctx sdk.Context, addr sdk.Address) {
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store := ctx.KVStore(sm.key)
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store.Delete(addr)
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}
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func (sm StakingMapper) Bond(ctx sdk.Context, addr sdk.Address, pubKey crypto.PubKey, power int64) (int64, sdk.Error) {
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bi := sm.getBondInfo(ctx, addr)
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if bi == nil {
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bi = &bondInfo{
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PubKey: pubKey,
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Power: power,
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}
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sm.setBondInfo(ctx, addr, bi)
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return bi.Power, nil
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}
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newPower := bi.Power + power
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newBi := &bondInfo{
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PubKey: bi.PubKey,
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Power: newPower,
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}
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sm.setBondInfo(ctx, addr, newBi)
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return newBi.Power, nil
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}
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func (sm StakingMapper) Unbond(ctx sdk.Context, addr sdk.Address) (crypto.PubKey, int64, sdk.Error) {
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bi := sm.getBondInfo(ctx, addr)
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if bi == nil {
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return crypto.PubKey{}, 0, ErrInvalidUnbond()
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}
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sm.deleteBondInfo(ctx, addr)
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return bi.PubKey, bi.Power, nil
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}
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type bondInfo struct {
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PubKey crypto.PubKey
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Power int64
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}
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