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vote.go
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vote.go
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package keeper
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/gov/types"
)
// AddVote adds a vote on a specific proposal
func (keeper Keeper) AddVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress, option types.VoteOption) error {
proposal, ok := keeper.GetProposal(ctx, proposalID)
if !ok {
return sdkerrors.Wrapf(types.ErrUnknownProposal, "%d", proposalID)
}
if proposal.Status != types.StatusVotingPeriod {
return sdkerrors.Wrapf(types.ErrInactiveProposal, "%d", proposalID)
}
if !types.ValidVoteOption(option) {
return sdkerrors.Wrap(types.ErrInvalidVote, option.String())
}
vote := types.NewVote(proposalID, voterAddr, option)
keeper.SetVote(ctx, vote)
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeProposalVote,
sdk.NewAttribute(types.AttributeKeyOption, option.String()),
sdk.NewAttribute(types.AttributeKeyProposalID, fmt.Sprintf("%d", proposalID)),
),
)
return nil
}
// GetAllVotes returns all the votes from the store
func (keeper Keeper) GetAllVotes(ctx sdk.Context) (votes types.Votes) {
keeper.IterateAllVotes(ctx, func(vote types.Vote) bool {
votes = append(votes, vote)
return false
})
return
}
// GetVotes returns all the votes from a proposal
func (keeper Keeper) GetVotes(ctx sdk.Context, proposalID uint64) (votes types.Votes) {
keeper.IterateVotes(ctx, proposalID, func(vote types.Vote) bool {
votes = append(votes, vote)
return false
})
return
}
// GetVote gets the vote from an address on a specific proposal
func (keeper Keeper) GetVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress) (vote types.Vote, found bool) {
store := ctx.KVStore(keeper.storeKey)
bz := store.Get(types.VoteKey(proposalID, voterAddr))
if bz == nil {
return vote, false
}
keeper.cdc.MustUnmarshalBinaryBare(bz, &vote)
return vote, true
}
// SetVote sets a Vote to the gov store
func (keeper Keeper) SetVote(ctx sdk.Context, vote types.Vote) {
store := ctx.KVStore(keeper.storeKey)
bz := keeper.cdc.MustMarshalBinaryBare(&vote)
addr, err := sdk.AccAddressFromBech32(vote.Voter)
if err != nil {
panic(err)
}
store.Set(types.VoteKey(vote.ProposalId, addr), bz)
}
// IterateAllVotes iterates over the all the stored votes and performs a callback function
func (keeper Keeper) IterateAllVotes(ctx sdk.Context, cb func(vote types.Vote) (stop bool)) {
store := ctx.KVStore(keeper.storeKey)
iterator := sdk.KVStorePrefixIterator(store, types.VotesKeyPrefix)
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var vote types.Vote
keeper.cdc.MustUnmarshalBinaryBare(iterator.Value(), &vote)
if cb(vote) {
break
}
}
}
// IterateVotes iterates over the all the proposals votes and performs a callback function
func (keeper Keeper) IterateVotes(ctx sdk.Context, proposalID uint64, cb func(vote types.Vote) (stop bool)) {
store := ctx.KVStore(keeper.storeKey)
iterator := sdk.KVStorePrefixIterator(store, types.VotesKey(proposalID))
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var vote types.Vote
keeper.cdc.MustUnmarshalBinaryBare(iterator.Value(), &vote)
if cb(vote) {
break
}
}
}
// deleteVote deletes a vote from a given proposalID and voter from the store
func (keeper Keeper) deleteVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress) {
store := ctx.KVStore(keeper.storeKey)
store.Delete(types.VoteKey(proposalID, voterAddr))
}