101 lines
2.8 KiB
Go
101 lines
2.8 KiB
Go
package keeper
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import (
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"fmt"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/cosmos/cosmos-sdk/codec"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/auth/exported"
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"github.com/cosmos/cosmos-sdk/x/auth/types"
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"github.com/cosmos/cosmos-sdk/x/params/subspace"
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)
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// AccountKeeper encodes/decodes accounts using the go-amino (binary)
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// encoding/decoding library.
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type AccountKeeper struct {
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// The (unexposed) key used to access the store from the Context.
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key sdk.StoreKey
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// The prototypical Account constructor.
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proto func() exported.Account
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// The codec codec for binary encoding/decoding of accounts.
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cdc *codec.Codec
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paramSubspace subspace.Subspace
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}
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// NewAccountKeeper returns a new sdk.AccountKeeper that uses go-amino to
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// (binary) encode and decode concrete sdk.Accounts.
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// nolint
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func NewAccountKeeper(
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cdc *codec.Codec, key sdk.StoreKey, paramstore subspace.Subspace, proto func() exported.Account,
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) AccountKeeper {
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return AccountKeeper{
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key: key,
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proto: proto,
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cdc: cdc,
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paramSubspace: paramstore.WithKeyTable(types.ParamKeyTable()),
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}
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}
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// Logger returns a module-specific logger.
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func (ak AccountKeeper) Logger(ctx sdk.Context) log.Logger {
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return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
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}
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// GetPubKey Returns the PubKey of the account at address
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func (ak AccountKeeper) GetPubKey(ctx sdk.Context, addr sdk.AccAddress) (crypto.PubKey, sdk.Error) {
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acc := ak.GetAccount(ctx, addr)
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if acc == nil {
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return nil, sdk.ErrUnknownAddress(fmt.Sprintf("account %s does not exist", addr))
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}
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return acc.GetPubKey(), nil
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}
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// GetSequence Returns the Sequence of the account at address
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func (ak AccountKeeper) GetSequence(ctx sdk.Context, addr sdk.AccAddress) (uint64, sdk.Error) {
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acc := ak.GetAccount(ctx, addr)
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if acc == nil {
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return 0, sdk.ErrUnknownAddress(fmt.Sprintf("account %s does not exist", addr))
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}
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return acc.GetSequence(), nil
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}
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// GetNextAccountNumber returns and increments the global account number counter.
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// If the global account number is not set, it initializes it with value 0.
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func (ak AccountKeeper) GetNextAccountNumber(ctx sdk.Context) uint64 {
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var accNumber uint64
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store := ctx.KVStore(ak.key)
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bz := store.Get(types.GlobalAccountNumberKey)
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if bz == nil {
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// initialize the account numbers
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accNumber = 0
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} else {
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err := ak.cdc.UnmarshalBinaryLengthPrefixed(bz, &accNumber)
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if err != nil {
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panic(err)
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}
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}
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bz = ak.cdc.MustMarshalBinaryLengthPrefixed(accNumber + 1)
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store.Set(types.GlobalAccountNumberKey, bz)
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return accNumber
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}
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// -----------------------------------------------------------------------------
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// Misc.
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func (ak AccountKeeper) decodeAccount(bz []byte) (acc exported.Account) {
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err := ak.cdc.UnmarshalBinaryBare(bz, &acc)
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if err != nil {
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panic(err)
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}
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return
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}
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