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queryable.go
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/
queryable.go
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package paramHub
import (
"fmt"
"github.com/aximchain/axc-cosmos-sdk/codec"
sdk "github.com/aximchain/axc-cosmos-sdk/types"
"github.com/aximchain/axc-cosmos-sdk/x/paramHub/types"
abci "github.com/tendermint/tendermint/abci/types"
)
func NewQuerier(hub *ParamHub, cdc *codec.Codec) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err sdk.Error) {
switch path[0] {
case "fees":
fp := hub.GetFeeParams(ctx)
res, err := cdc.MarshalBinaryLengthPrefixed(fp)
if err != nil {
return nil, sdk.ErrInternal(err.Error())
}
return res, nil
case "sideParams":
if len(req.Data) == 0 {
return nil, types.ErrMissSideChainId(types.DefaultCodespace)
}
var sideChainId string
err := cdc.UnmarshalJSON(req.Data, &sideChainId)
if err != nil {
return nil, types.ErrInvalidSideChainId(types.DefaultCodespace, err.Error())
}
params, sdkErr := hub.GetSCParams(ctx, sideChainId)
if err != nil {
return nil, sdkErr
}
res, err := cdc.MarshalJSON(params)
if err != nil {
return nil, sdk.ErrInternal(err.Error())
}
return res, nil
default:
return res, sdk.ErrUnknownRequest(req.Path)
}
}
}
// tolerate the previous RPC api.
func CreateAbciQueryHandler(paramHub *ParamHub) func(sdk.Context, abci.RequestQuery, []string) *abci.ResponseQuery {
return func(ctx sdk.Context, req abci.RequestQuery, path []string) (res *abci.ResponseQuery) {
// expects at least two query path segments.
if path[0] != AbciQueryPrefix || len(path) < 2 {
return nil
}
switch path[1] {
case "fees":
fp := paramHub.GetFeeParams(ctx)
bz, err := paramHub.GetCodeC().MarshalBinaryLengthPrefixed(fp)
if err != nil {
return &abci.ResponseQuery{
Code: uint32(sdk.CodeInternal),
Log: err.Error(),
}
}
return &abci.ResponseQuery{
Code: uint32(sdk.ABCICodeOK),
Value: bz,
}
case "sideParams":
if len(req.Data) == 0 {
return &abci.ResponseQuery{
Code: uint32(sdk.CodeInternal),
Log: "missing side chain id",
}
}
var sideChainId string
err := paramHub.GetCodeC().UnmarshalJSON(req.Data, &sideChainId)
if err != nil {
return &abci.ResponseQuery{
Code: uint32(sdk.CodeInternal),
Log: fmt.Sprintf("invalid data %v", err),
}
}
params, sdkErr := paramHub.GetSCParams(ctx, sideChainId)
if sdkErr != nil {
return &abci.ResponseQuery{
Code: uint32(sdkErr.ABCICode()),
Log: sdkErr.ABCILog(),
}
}
bz, err := paramHub.GetCodeC().MarshalJSON(params)
if err != nil {
return &abci.ResponseQuery{
Code: uint32(sdk.CodeInternal),
Log: err.Error(),
}
}
return &abci.ResponseQuery{
Code: uint32(sdk.ABCICodeOK),
Value: bz,
}
case "params":
params, sdkErr := paramHub.GetFCParams(ctx)
if sdkErr != nil {
return &abci.ResponseQuery{
Code: uint32(sdkErr.ABCICode()),
Log: sdkErr.ABCILog(),
}
}
bz, err := paramHub.GetCodeC().MarshalJSON(params)
if err != nil {
return &abci.ResponseQuery{
Code: uint32(sdk.CodeInternal),
Log: err.Error(),
}
}
return &abci.ResponseQuery{
Code: uint32(sdk.ABCICodeOK),
Value: bz,
}
default:
return &abci.ResponseQuery{
Code: uint32(sdk.CodeOK),
Info: fmt.Sprintf(
"Unknown `%s` query path: %v",
AbciQueryPrefix, path),
}
}
}
}