139 lines
4.1 KiB
Go
139 lines
4.1 KiB
Go
package keeper
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import (
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"fmt"
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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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"github.com/cosmos/cosmos-sdk/x/gov/types"
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)
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// AddVote adds a vote on a specific proposal
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func (keeper Keeper) AddVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress, options types.WeightedVoteOptions) error {
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proposal, ok := keeper.GetProposal(ctx, proposalID)
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if !ok {
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return sdkerrors.Wrapf(types.ErrUnknownProposal, "%d", proposalID)
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}
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if proposal.Status != types.StatusVotingPeriod {
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return sdkerrors.Wrapf(types.ErrInactiveProposal, "%d", proposalID)
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}
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for _, option := range options {
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if !types.ValidWeightedVoteOption(option) {
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return sdkerrors.Wrap(types.ErrInvalidVote, option.String())
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}
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}
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vote := types.NewVote(proposalID, voterAddr, options)
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keeper.SetVote(ctx, vote)
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// called after a vote on a proposal is cast
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keeper.AfterProposalVote(ctx, proposalID, voterAddr)
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeProposalVote,
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sdk.NewAttribute(types.AttributeKeyOption, options.String()),
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sdk.NewAttribute(types.AttributeKeyProposalID, fmt.Sprintf("%d", proposalID)),
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),
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)
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return nil
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}
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// GetAllVotes returns all the votes from the store
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func (keeper Keeper) GetAllVotes(ctx sdk.Context) (votes types.Votes) {
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keeper.IterateAllVotes(ctx, func(vote types.Vote) bool {
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populateLegacyOption(&vote)
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votes = append(votes, vote)
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return false
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})
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return
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}
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// GetVotes returns all the votes from a proposal
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func (keeper Keeper) GetVotes(ctx sdk.Context, proposalID uint64) (votes types.Votes) {
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keeper.IterateVotes(ctx, proposalID, func(vote types.Vote) bool {
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populateLegacyOption(&vote)
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votes = append(votes, vote)
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return false
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})
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return
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}
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// GetVote gets the vote from an address on a specific proposal
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func (keeper Keeper) GetVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress) (vote types.Vote, found bool) {
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store := ctx.KVStore(keeper.storeKey)
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bz := store.Get(types.VoteKey(proposalID, voterAddr))
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if bz == nil {
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return vote, false
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}
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keeper.cdc.MustUnmarshal(bz, &vote)
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populateLegacyOption(&vote)
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return vote, true
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}
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// SetVote sets a Vote to the gov store
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func (keeper Keeper) SetVote(ctx sdk.Context, vote types.Vote) {
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// vote.Option is a deprecated field, we don't set it in state
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if vote.Option != types.OptionEmpty { //nolint
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vote.Option = types.OptionEmpty //nolint
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}
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store := ctx.KVStore(keeper.storeKey)
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bz := keeper.cdc.MustMarshal(&vote)
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addr := sdk.MustAccAddressFromBech32(vote.Voter)
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store.Set(types.VoteKey(vote.ProposalId, addr), bz)
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}
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// IterateAllVotes iterates over the all the stored votes and performs a callback function
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func (keeper Keeper) IterateAllVotes(ctx sdk.Context, cb func(vote types.Vote) (stop bool)) {
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store := ctx.KVStore(keeper.storeKey)
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iterator := sdk.KVStorePrefixIterator(store, types.VotesKeyPrefix)
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defer iterator.Close()
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for ; iterator.Valid(); iterator.Next() {
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var vote types.Vote
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keeper.cdc.MustUnmarshal(iterator.Value(), &vote)
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populateLegacyOption(&vote)
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if cb(vote) {
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break
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}
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}
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}
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// IterateVotes iterates over the all the proposals votes and performs a callback function
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func (keeper Keeper) IterateVotes(ctx sdk.Context, proposalID uint64, cb func(vote types.Vote) (stop bool)) {
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store := ctx.KVStore(keeper.storeKey)
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iterator := sdk.KVStorePrefixIterator(store, types.VotesKey(proposalID))
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defer iterator.Close()
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for ; iterator.Valid(); iterator.Next() {
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var vote types.Vote
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keeper.cdc.MustUnmarshal(iterator.Value(), &vote)
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populateLegacyOption(&vote)
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if cb(vote) {
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break
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}
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}
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}
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// deleteVote deletes a vote from a given proposalID and voter from the store
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func (keeper Keeper) deleteVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress) {
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store := ctx.KVStore(keeper.storeKey)
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store.Delete(types.VoteKey(proposalID, voterAddr))
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}
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// populateLegacyOption adds graceful fallback of deprecated `Option` field, in case
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// there's only 1 VoteOption.
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func populateLegacyOption(vote *types.Vote) {
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if len(vote.Options) == 1 && vote.Options[0].Weight.Equal(sdk.MustNewDecFromStr("1.0")) {
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vote.Option = vote.Options[0].Option //nolint
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}
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}
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