forked from terra-money/classic-core
/
querier.go
180 lines (149 loc) · 4.64 KB
/
querier.go
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package budget
import (
"strconv"
"strings"
"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 (
QueryProgram = "program"
QueryVotes = "votes"
QueryActiveList = "active-list"
QueryCandidateList = "candidate-list"
QueryParams = "params"
)
// NewQuerier is the module level router for state queries
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 QueryProgram:
return queryProgram(ctx, path[1:], req, keeper)
case QueryVotes:
return queryVotes(ctx, req, keeper)
case QueryActiveList:
return queryActiveList(ctx, req, keeper)
case QueryCandidateList:
return queryCandidateList(ctx, req, keeper)
case QueryParams:
return queryParams(ctx, req, keeper)
default:
return nil, sdk.ErrUnknownRequest("unknown oracle query endpoint")
}
}
}
// nolint: unparam
func queryProgram(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
programIDStr := path[0]
programIDInt, strConvertError := strconv.Atoi(programIDStr)
if strConvertError != nil {
return nil, sdk.ErrInternal("ProgramID must be a valid int")
}
programID := uint64(programIDInt)
program, pErr := keeper.GetProgram(ctx, programID)
if pErr != nil {
return nil, pErr
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, program)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
// Params for query 'custom/oracle/votes'
type QueryVotesParams struct {
Voter sdk.AccAddress
ProgramID uint64
}
// creates a new instance of QueryVoteParams
func NewQueryVotesParams(voter sdk.AccAddress, programID uint64) QueryVotesParams {
return QueryVotesParams{
Voter: voter,
ProgramID: programID,
}
}
// nolint: unparam
func queryVotes(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
var params QueryVotesParams
err := keeper.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
filteredVotes := []VoteMsg{}
store := ctx.KVStore(keeper.key)
iter := sdk.KVStorePrefixIterator(store, PrefixVote)
defer iter.Close()
for ; iter.Valid(); iter.Next() {
var option bool
var metaData string
var programID uint64
var voterAddress sdk.AccAddress
keeper.cdc.MustUnmarshalBinaryLengthPrefixed(iter.Key(), &metaData)
keeper.cdc.MustUnmarshalBinaryLengthPrefixed(iter.Value(), &option)
metaStrs := strings.Split(metaData, ":")
programIDInt, err := strconv.Atoi(metaStrs[1])
if err != nil {
panic(err)
}
programID = uint64(programIDInt)
voterAddress, err = sdk.AccAddressFromBech32(metaStrs[2])
if err != nil {
panic(err)
}
include := true
if params.ProgramID != 0 && params.ProgramID != programID {
include = false
}
if len(params.Voter) != 0 && !(params.Voter.Equals(voterAddress)) {
include = false
}
if !include {
continue
}
vote := NewVoteMsg(programID, option, voterAddress)
filteredVotes = append(filteredVotes, vote)
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, filteredVotes)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
// nolint: unparam
func queryActiveList(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
programs := []Program{}
keeper.IterateActivePrograms(ctx, func(programID uint64, program Program) (stop bool) {
programs = append(programs, program)
return false
})
bz, err := codec.MarshalJSONIndent(keeper.cdc, programs)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
// nolint: unparam
func queryCandidateList(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
programs := []Program{}
store := ctx.KVStore(keeper.key)
iter := sdk.KVStorePrefixIterator(store, PrefixCandidateQueue)
defer iter.Close()
for ; iter.Valid(); iter.Next() {
var program Program
keeper.cdc.MustUnmarshalBinaryLengthPrefixed(iter.Value(), &program)
programs = append(programs, program)
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, programs)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
func queryParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
bz, err := codec.MarshalJSONIndent(keeper.cdc, keeper.GetParams(ctx))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}