package keeper import ( "time" "github.com/cosmos/cosmos-sdk/codec" "github.com/cosmos/cosmos-sdk/store/prefix" sdk "github.com/cosmos/cosmos-sdk/types" govtypes "github.com/cosmos/cosmos-sdk/x/gov/types" "github.com/kava-labs/kava/x/committee/types" ) type Keeper struct { cdc *codec.Codec storeKey sdk.StoreKey codespace sdk.CodespaceType // Proposal router router govtypes.Router } func NewKeeper(cdc *codec.Codec, storeKey sdk.StoreKey, router govtypes.Router, codespace sdk.CodespaceType) Keeper { // Logic in the keeper methods assume the set of gov handlers is fixed. // So the gov router must be sealed so no handlers can be added or removed after the keeper is created. router.Seal() return Keeper{ cdc: cdc, storeKey: storeKey, codespace: codespace, router: router, } } // ------------------------------------------ // Committees // ------------------------------------------ // GetCommittee gets a committee from the store. func (k Keeper) GetCommittee(ctx sdk.Context, committeeID uint64) (types.Committee, bool) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.CommitteeKeyPrefix) bz := store.Get(types.GetKeyFromID(committeeID)) if bz == nil { return types.Committee{}, false } var committee types.Committee k.cdc.MustUnmarshalBinaryBare(bz, &committee) return committee, true } // SetCommittee puts a committee into the store. func (k Keeper) SetCommittee(ctx sdk.Context, committee types.Committee) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.CommitteeKeyPrefix) bz := k.cdc.MustMarshalBinaryBare(committee) store.Set(types.GetKeyFromID(committee.ID), bz) } // DeleteCommittee removes a committee from the store. func (k Keeper) DeleteCommittee(ctx sdk.Context, committeeID uint64) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.CommitteeKeyPrefix) store.Delete(types.GetKeyFromID(committeeID)) } // IterateCommittees provides an iterator over all stored committees. // For each committee, cb will be called. If cb returns true, the iterator will close and stop. func (k Keeper) IterateCommittees(ctx sdk.Context, cb func(committee types.Committee) (stop bool)) { iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.storeKey), types.CommitteeKeyPrefix) defer iterator.Close() for ; iterator.Valid(); iterator.Next() { var committee types.Committee k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &committee) if cb(committee) { break } } } // GetCommittees returns all stored committees. func (k Keeper) GetCommittees(ctx sdk.Context) []types.Committee { results := []types.Committee{} k.IterateCommittees(ctx, func(com types.Committee) bool { results = append(results, com) return false }) return results } // ------------------------------------------ // Proposals // ------------------------------------------ // SetNextProposalID stores an ID to be used for the next created proposal func (k Keeper) SetNextProposalID(ctx sdk.Context, id uint64) { store := ctx.KVStore(k.storeKey) store.Set(types.NextProposalIDKey, types.GetKeyFromID(id)) } // GetNextProposalID reads the next available global ID from store func (k Keeper) GetNextProposalID(ctx sdk.Context) (uint64, sdk.Error) { store := ctx.KVStore(k.storeKey) bz := store.Get(types.NextProposalIDKey) if bz == nil { return 0, types.ErrInvalidGenesis(k.codespace, "next proposal ID not set at genesis") } return types.Uint64FromBytes(bz), nil } // IncrementNextProposalID increments the next proposal ID in the store by 1. func (k Keeper) IncrementNextProposalID(ctx sdk.Context) sdk.Error { id, err := k.GetNextProposalID(ctx) if err != nil { return err } k.SetNextProposalID(ctx, id+1) return nil } // StoreNewProposal stores a proposal, adding a new ID func (k Keeper) StoreNewProposal(ctx sdk.Context, pubProposal types.PubProposal, committeeID uint64, deadline time.Time) (uint64, sdk.Error) { newProposalID, err := k.GetNextProposalID(ctx) if err != nil { return 0, err } proposal := types.NewProposal( pubProposal, newProposalID, committeeID, deadline, ) k.SetProposal(ctx, proposal) err = k.IncrementNextProposalID(ctx) if err != nil { return 0, err } return newProposalID, nil } // GetProposal gets a proposal from the store. func (k Keeper) GetProposal(ctx sdk.Context, proposalID uint64) (types.Proposal, bool) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.ProposalKeyPrefix) bz := store.Get(types.GetKeyFromID(proposalID)) if bz == nil { return types.Proposal{}, false } var proposal types.Proposal k.cdc.MustUnmarshalBinaryBare(bz, &proposal) return proposal, true } // SetProposal puts a proposal into the store. func (k Keeper) SetProposal(ctx sdk.Context, proposal types.Proposal) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.ProposalKeyPrefix) bz := k.cdc.MustMarshalBinaryBare(proposal) store.Set(types.GetKeyFromID(proposal.ID), bz) } // DeleteProposal removes a proposal from the store. func (k Keeper) DeleteProposal(ctx sdk.Context, proposalID uint64) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.ProposalKeyPrefix) store.Delete(types.GetKeyFromID(proposalID)) } // IterateProposals provides an iterator over all stored proposals. // For each proposal, cb will be called. If cb returns true, the iterator will close and stop. func (k Keeper) IterateProposals(ctx sdk.Context, cb func(proposal types.Proposal) (stop bool)) { iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.storeKey), types.ProposalKeyPrefix) defer iterator.Close() for ; iterator.Valid(); iterator.Next() { var proposal types.Proposal k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &proposal) if cb(proposal) { break } } } // GetProposals returns all stored proposals. func (k Keeper) GetProposals(ctx sdk.Context) []types.Proposal { results := []types.Proposal{} k.IterateProposals(ctx, func(prop types.Proposal) bool { results = append(results, prop) return false }) return results } // GetProposalsByCommittee returns all proposals for one committee. func (k Keeper) GetProposalsByCommittee(ctx sdk.Context, committeeID uint64) []types.Proposal { results := []types.Proposal{} k.IterateProposals(ctx, func(prop types.Proposal) bool { if prop.CommitteeID == committeeID { results = append(results, prop) } return false }) return results } // DeleteProposalAndVotes removes a proposal and its associated votes. func (k Keeper) DeleteProposalAndVotes(ctx sdk.Context, proposalID uint64) { votes := k.GetVotesByProposal(ctx, proposalID) k.DeleteProposal(ctx, proposalID) for _, v := range votes { k.DeleteVote(ctx, v.ProposalID, v.Voter) } } // ------------------------------------------ // Votes // ------------------------------------------ // GetVote gets a vote from the store. func (k Keeper) GetVote(ctx sdk.Context, proposalID uint64, voter sdk.AccAddress) (types.Vote, bool) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.VoteKeyPrefix) bz := store.Get(types.GetVoteKey(proposalID, voter)) if bz == nil { return types.Vote{}, false } var vote types.Vote k.cdc.MustUnmarshalBinaryBare(bz, &vote) return vote, true } // SetVote puts a vote into the store. func (k Keeper) SetVote(ctx sdk.Context, vote types.Vote) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.VoteKeyPrefix) bz := k.cdc.MustMarshalBinaryBare(vote) store.Set(types.GetVoteKey(vote.ProposalID, vote.Voter), bz) } // DeleteVote removes a Vote from the store. func (k Keeper) DeleteVote(ctx sdk.Context, proposalID uint64, voter sdk.AccAddress) { store := prefix.NewStore(ctx.KVStore(k.storeKey), types.VoteKeyPrefix) store.Delete(types.GetVoteKey(proposalID, voter)) } // IterateVotes provides an iterator over all stored votes. // For each vote, cb will be called. If cb returns true, the iterator will close and stop. func (k Keeper) IterateVotes(ctx sdk.Context, cb func(vote types.Vote) (stop bool)) { iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.storeKey), types.VoteKeyPrefix) defer iterator.Close() for ; iterator.Valid(); iterator.Next() { var vote types.Vote k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &vote) if cb(vote) { break } } } // GetVotes returns all stored votes. func (k Keeper) GetVotes(ctx sdk.Context) []types.Vote { results := []types.Vote{} k.IterateVotes(ctx, func(vote types.Vote) bool { results = append(results, vote) return false }) return results } // GetVotesByProposal returns all votes for one proposal. func (k Keeper) GetVotesByProposal(ctx sdk.Context, proposalID uint64) []types.Vote { results := []types.Vote{} k.IterateVotes(ctx, func(vote types.Vote) bool { if vote.ProposalID == proposalID { results = append(results, vote) } return false }) return results }