786afb37f8
Closes: #10685 --- ### Author Checklist *All items are required. Please add a note to the item if the item is not applicable and please add links to any relevant follow up issues.* I have... - [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [ ] added `!` to the type prefix if API or client breaking change - [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting)) - [ ] provided a link to the relevant issue or specification - [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules) - [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing) - [ ] added a changelog entry to `CHANGELOG.md` - [ ] included comments for [documenting Go code](https://blog.golang.org/godoc) - [ ] updated the relevant documentation or specification - [ ] reviewed "Files changed" and left comments if necessary - [ ] confirmed all CI checks have passed ### Reviewers Checklist *All items are required. Please add a note if the item is not applicable and please add your handle next to the items reviewed if you only reviewed selected items.* I have... - [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [ ] confirmed `!` in the type prefix if API or client breaking change - [ ] confirmed all author checklist items have been addressed - [ ] reviewed state machine logic - [ ] reviewed API design and naming - [ ] reviewed documentation is accurate - [ ] reviewed tests and test coverage - [ ] manually tested (if applicable)
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
package feegrant
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import (
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time "time"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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)
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var _ FeeAllowanceI = (*BasicAllowance)(nil)
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// Accept can use fee payment requested as well as timestamp of the current block
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// to determine whether or not to process this. This is checked in
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// Keeper.UseGrantedFees and the return values should match how it is handled there.
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//
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// If it returns an error, the fee payment is rejected, otherwise it is accepted.
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// The FeeAllowance implementation is expected to update it's internal state
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// and will be saved again after an acceptance.
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//
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// If remove is true (regardless of the error), the FeeAllowance will be deleted from storage
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// (eg. when it is used up). (See call to RevokeAllowance in Keeper.UseGrantedFees)
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func (a *BasicAllowance) Accept(ctx sdk.Context, fee sdk.Coins, _ []sdk.Msg) (bool, error) {
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if a.Expiration != nil && a.Expiration.Before(ctx.BlockTime()) {
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return true, sdkerrors.Wrap(ErrFeeLimitExpired, "basic allowance")
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}
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if a.SpendLimit != nil {
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left, invalid := a.SpendLimit.SafeSub(fee)
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if invalid {
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return false, sdkerrors.Wrap(ErrFeeLimitExceeded, "basic allowance")
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}
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a.SpendLimit = left
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return left.IsZero(), nil
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}
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return false, nil
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}
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// ValidateBasic implements FeeAllowance and enforces basic sanity checks
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func (a BasicAllowance) ValidateBasic() error {
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if a.SpendLimit != nil {
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if !a.SpendLimit.IsValid() {
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return sdkerrors.Wrapf(sdkerrors.ErrInvalidCoins, "send amount is invalid: %s", a.SpendLimit)
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}
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if !a.SpendLimit.IsAllPositive() {
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return sdkerrors.Wrap(sdkerrors.ErrInvalidCoins, "spend limit must be positive")
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}
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}
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if a.Expiration != nil && a.Expiration.Unix() < 0 {
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return sdkerrors.Wrap(ErrInvalidDuration, "expiration time cannot be negative")
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}
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return nil
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}
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func (a BasicAllowance) ExpiresAt() (*time.Time, error) {
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return a.Expiration, nil
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}
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