mirror of
https://github.com/0glabs/0g-chain.git
synced 2024-12-27 00:35:18 +00:00
102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
package keeper
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import (
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"time"
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"github.com/cosmos/cosmos-sdk/codec"
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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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paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
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"github.com/0glabs/0g-chain/x/issuance/types"
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)
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// Keeper keeper for the issuance module
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type Keeper struct {
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key storetypes.StoreKey
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cdc codec.Codec
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paramSubspace paramtypes.Subspace
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accountKeeper types.AccountKeeper
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bankKeeper types.BankKeeper
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}
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// NewKeeper returns a new keeper
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func NewKeeper(cdc codec.Codec, key storetypes.StoreKey, paramstore paramtypes.Subspace, ak types.AccountKeeper, bk types.BankKeeper) Keeper {
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if !paramstore.HasKeyTable() {
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paramstore = paramstore.WithKeyTable(types.ParamKeyTable())
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}
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return Keeper{
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key: key,
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cdc: cdc,
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paramSubspace: paramstore,
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accountKeeper: ak,
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bankKeeper: bk,
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}
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}
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// GetAssetSupply gets an asset's current supply from the store.
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func (k Keeper) GetAssetSupply(ctx sdk.Context, denom string) (types.AssetSupply, bool) {
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var assetSupply types.AssetSupply
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store := prefix.NewStore(ctx.KVStore(k.key), types.AssetSupplyPrefix)
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bz := store.Get([]byte(denom))
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if bz == nil {
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return types.AssetSupply{}, false
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}
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k.cdc.MustUnmarshal(bz, &assetSupply)
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return assetSupply, true
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}
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// SetAssetSupply updates an asset's supply
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func (k Keeper) SetAssetSupply(ctx sdk.Context, supply types.AssetSupply, denom string) {
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store := prefix.NewStore(ctx.KVStore(k.key), types.AssetSupplyPrefix)
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store.Set([]byte(denom), k.cdc.MustMarshal(&supply))
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}
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// IterateAssetSupplies provides an iterator over all stored AssetSupplies.
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func (k Keeper) IterateAssetSupplies(ctx sdk.Context, cb func(supply types.AssetSupply) (stop bool)) {
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iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.key), types.AssetSupplyPrefix)
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defer iterator.Close()
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for ; iterator.Valid(); iterator.Next() {
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var supply types.AssetSupply
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k.cdc.MustUnmarshal(iterator.Value(), &supply)
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if cb(supply) {
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break
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}
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}
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}
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// GetAllAssetSupplies returns all asset supplies from the store
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func (k Keeper) GetAllAssetSupplies(ctx sdk.Context) (supplies []types.AssetSupply) {
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k.IterateAssetSupplies(ctx, func(supply types.AssetSupply) bool {
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supplies = append(supplies, supply)
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return false
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})
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return
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}
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// GetPreviousBlockTime get the blocktime for the previous block
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func (k Keeper) GetPreviousBlockTime(ctx sdk.Context) (blockTime time.Time, found bool) {
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store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousBlockTimeKey)
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b := store.Get(types.PreviousBlockTimeKey)
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if b == nil {
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return time.Time{}, false
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}
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if err := blockTime.UnmarshalBinary(b); err != nil {
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panic(err)
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}
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return blockTime, true
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}
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// SetPreviousBlockTime set the time of the previous block
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func (k Keeper) SetPreviousBlockTime(ctx sdk.Context, blockTime time.Time) {
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store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousBlockTimeKey)
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b, err := blockTime.MarshalBinary()
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if err != nil {
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panic(err)
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}
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store.Set(types.PreviousBlockTimeKey, b)
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}
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