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querier.go
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querier.go
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package keeper
import (
"strconv"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/staking/exported"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/bandprotocol/bandchain-node/x/oracle/types"
)
// 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 error) {
switch path[0] {
case types.QueryParams:
return queryParameters(ctx, keeper)
case types.QueryCounts:
return queryCounts(ctx, keeper)
case types.QueryData:
return queryData(ctx, path[1:], keeper)
case types.QueryDataSources:
return queryDataSourceByID(ctx, path[1:], keeper)
case types.QueryOracleScripts:
return queryOracleScriptByID(ctx, path[1:], keeper)
case types.QueryRequests:
return queryRequestByID(ctx, path[1:], keeper)
case types.QueryValidatorStatus:
return queryValidatorStatus(ctx, path[1:], keeper)
case types.QueryReporters:
return queryReporters(ctx, path[1:], keeper)
case types.QueryActiveValidators:
return queryActiveValidators(ctx, keeper)
default:
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unknown oracle query endpoint")
}
}
}
func queryParameters(ctx sdk.Context, k Keeper) ([]byte, error) {
return types.QueryOK(k.GetParams(ctx))
}
func queryCounts(ctx sdk.Context, k Keeper) ([]byte, error) {
return types.QueryOK(types.QueryCountsResult{
DataSourceCount: k.GetDataSourceCount(ctx),
OracleScriptCount: k.GetOracleScriptCount(ctx),
RequestCount: k.GetRequestCount(ctx),
})
}
func queryData(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "data hash not specified")
}
return k.fileCache.GetFile(path[0])
}
func queryDataSourceByID(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "data source not specified")
}
id, err := strconv.ParseInt(path[0], 10, 64)
if err != nil {
return types.QueryBadRequest(err.Error())
}
dataSource, err := k.GetDataSource(ctx, types.DataSourceID(id))
if err != nil {
return types.QueryNotFound(err.Error())
}
return types.QueryOK(dataSource)
}
func queryOracleScriptByID(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "oracle script not specified")
}
id, err := strconv.ParseInt(path[0], 10, 64)
if err != nil {
return types.QueryBadRequest(err.Error())
}
oracleScript, err := k.GetOracleScript(ctx, types.OracleScriptID(id))
if err != nil {
return types.QueryNotFound(err.Error())
}
return types.QueryOK(oracleScript)
}
func queryRequestByID(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "request not specified")
}
id, err := strconv.ParseInt(path[0], 10, 64)
if err != nil {
return types.QueryBadRequest(err.Error())
}
request, err := k.GetRequest(ctx, types.RequestID(id))
if err != nil {
return types.QueryNotFound(err.Error())
}
reports := k.GetReports(ctx, types.RequestID(id))
if !k.HasResult(ctx, types.RequestID(id)) {
return types.QueryOK(types.QueryRequestResult{
Request: request,
Reports: reports,
Result: nil,
})
}
result := k.MustGetResult(ctx, types.RequestID(id))
return types.QueryOK(types.QueryRequestResult{
Request: request,
Reports: reports,
Result: &result,
})
}
func queryValidatorStatus(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "validator address not specified")
}
validatorAddress, err := sdk.ValAddressFromBech32(path[0])
if err != nil {
return types.QueryBadRequest(err.Error())
}
return types.QueryOK(k.GetValidatorStatus(ctx, validatorAddress))
}
func queryReporters(ctx sdk.Context, path []string, k Keeper) ([]byte, error) {
if len(path) != 1 {
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "validator address not specified")
}
validatorAddress, err := sdk.ValAddressFromBech32(path[0])
if err != nil {
return types.QueryBadRequest(err.Error())
}
return types.QueryOK(k.GetReporters(ctx, validatorAddress))
}
func queryActiveValidators(ctx sdk.Context, k Keeper) ([]byte, error) {
vals := []types.QueryActiveValidatorResult{}
k.stakingKeeper.IterateBondedValidatorsByPower(ctx,
func(idx int64, val exported.ValidatorI) (stop bool) {
if k.GetValidatorStatus(ctx, val.GetOperator()).IsActive {
vals = append(vals, types.QueryActiveValidatorResult{
Address: val.GetOperator(),
Power: val.GetTokens().Uint64(),
})
}
return false
})
return types.QueryOK(vals)
}