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queryable.go
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queryable.go
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package gov
import (
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
)
// query endpoints supported by the governance Querier
const (
QueryProposals = "proposals"
QueryProposal = "proposal"
QueryDeposits = "deposits"
QueryDeposit = "deposit"
QueryVotes = "votes"
QueryVote = "vote"
QueryTally = "tally"
)
func NewQuerier(keeper Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err sdk.Error) {
switch path[0] {
case QueryProposals:
return queryProposals(ctx, path[1:], req, keeper)
case QueryProposal:
return queryProposal(ctx, path[1:], req, keeper)
case QueryDeposits:
return queryDeposits(ctx, path[1:], req, keeper)
case QueryDeposit:
return queryDeposit(ctx, path[1:], req, keeper)
case QueryVotes:
return queryVotes(ctx, path[1:], req, keeper)
case QueryVote:
return queryVote(ctx, path[1:], req, keeper)
case QueryTally:
return queryTally(ctx, path[1:], req, keeper)
default:
return nil, sdk.ErrUnknownRequest("unknown gov query endpoint")
}
}
}
// Params for query 'custom/gov/proposal'
type QueryProposalParams struct {
ProposalID uint64
}
// nolint: unparam
func queryProposal(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryProposalParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
proposal := keeper.GetProposal(ctx, params.ProposalID)
if proposal == nil {
return nil, ErrUnknownProposal(DefaultCodespace, params.ProposalID)
}
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, proposal)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/deposit'
type QueryDepositParams struct {
ProposalID uint64
Depositer sdk.AccAddress
}
// nolint: unparam
func queryDeposit(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryDepositParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
deposit, _ := keeper.GetDeposit(ctx, params.ProposalID, params.Depositer)
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, deposit)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/vote'
type QueryVoteParams struct {
ProposalID uint64
Voter sdk.AccAddress
}
// nolint: unparam
func queryVote(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryVoteParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
vote, _ := keeper.GetVote(ctx, params.ProposalID, params.Voter)
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, vote)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/deposits'
type QueryDepositsParams struct {
ProposalID uint64
}
// nolint: unparam
func queryDeposits(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryDepositsParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
var deposits []Deposit
depositsIterator := keeper.GetDeposits(ctx, params.ProposalID)
for ; depositsIterator.Valid(); depositsIterator.Next() {
deposit := Deposit{}
keeper.cdc.MustUnmarshalBinaryLengthPrefixed(depositsIterator.Value(), &deposit)
deposits = append(deposits, deposit)
}
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, deposits)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/votes'
type QueryVotesParams struct {
ProposalID uint64
}
// nolint: unparam
func queryVotes(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryVotesParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
var votes []Vote
votesIterator := keeper.GetVotes(ctx, params.ProposalID)
for ; votesIterator.Valid(); votesIterator.Next() {
vote := Vote{}
keeper.cdc.MustUnmarshalBinaryLengthPrefixed(votesIterator.Value(), &vote)
votes = append(votes, vote)
}
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, votes)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/proposals'
type QueryProposalsParams struct {
Voter sdk.AccAddress
Depositer sdk.AccAddress
ProposalStatus ProposalStatus
Limit uint64
}
// nolint: unparam
func queryProposals(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
var params QueryProposalsParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
proposals := keeper.GetProposalsFiltered(ctx, params.Voter, params.Depositer, params.ProposalStatus, params.Limit)
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, proposals)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}
// Params for query 'custom/gov/tally'
type QueryTallyParams struct {
ProposalID uint64
}
// nolint: unparam
func queryTally(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) {
// TODO: Dependant on #1914
var params QueryTallyParams
err2 := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err2 != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err2.Error()))
}
proposalID := params.ProposalID
proposal := keeper.GetProposal(ctx, proposalID)
if proposal == nil {
return nil, ErrUnknownProposal(DefaultCodespace, proposalID)
}
var tallyResult TallyResult
if proposal.GetStatus() == StatusDepositPeriod {
tallyResult = EmptyTallyResult()
} else if proposal.GetStatus() == StatusPassed || proposal.GetStatus() == StatusRejected {
tallyResult = proposal.GetTallyResult()
} else {
_, tallyResult = tally(ctx, keeper, proposal)
}
bz, err2 := codec.MarshalJSONIndent(keeper.cdc, tallyResult)
if err2 != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err2.Error()))
}
return bz, nil
}