70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package feegrant
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import (
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"github.com/cosmos/gogoproto/proto"
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gogoprotoany "github.com/cosmos/gogoproto/types/any"
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errorsmod "cosmossdk.io/errors"
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"github.com/cosmos/cosmos-sdk/codec/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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)
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var _ gogoprotoany.UnpackInterfacesMessage = &Grant{}
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// NewGrant creates a new FeeAllowanceGrant.
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func NewGrant(granter, grantee string, feeAllowance FeeAllowanceI) (Grant, error) {
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msg, ok := feeAllowance.(proto.Message)
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if !ok {
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return Grant{}, errorsmod.Wrapf(sdkerrors.ErrPackAny, "cannot proto marshal %T", feeAllowance)
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}
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any, err := types.NewAnyWithValue(msg)
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if err != nil {
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return Grant{}, err
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}
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return Grant{
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Granter: granter,
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Grantee: grantee,
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Allowance: any,
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}, nil
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}
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// ValidateBasic performs basic validation on
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// FeeAllowanceGrant
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func (a Grant) ValidateBasic() error {
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if a.Granter == "" {
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return errorsmod.Wrap(sdkerrors.ErrInvalidAddress, "missing granter address")
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}
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if a.Grantee == "" {
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return errorsmod.Wrap(sdkerrors.ErrInvalidAddress, "missing grantee address")
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}
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if a.Grantee == a.Granter {
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return errorsmod.Wrap(sdkerrors.ErrInvalidAddress, "cannot self-grant fee authorization")
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}
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f, err := a.GetGrant()
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if err != nil {
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return err
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}
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return f.ValidateBasic()
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}
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// GetGrant unpacks allowance
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func (a Grant) GetGrant() (FeeAllowanceI, error) {
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allowance, ok := a.Allowance.GetCachedValue().(FeeAllowanceI)
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if !ok {
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return nil, errorsmod.Wrap(ErrNoAllowance, "failed to get allowance")
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}
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return allowance, nil
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}
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// UnpackInterfaces implements UnpackInterfacesMessage.UnpackInterfaces
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func (a Grant) UnpackInterfaces(unpacker gogoprotoany.AnyUnpacker) error {
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var allowance FeeAllowanceI
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return unpacker.UnpackAny(a.Allowance, &allowance)
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}
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