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querier.go
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querier.go
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package keeper
import (
"fmt"
"strings"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
vstoragetypes "github.com/Agoric/agoric-sdk/golang/cosmos/x/vstorage/types"
)
// query endpoints supported by the swingset Querier
const (
QueryEgress = "egress"
QueryMailbox = "mailbox"
LegacyQueryStorage = "storage"
LegacyQueryKeys = "keys"
)
// NewQuerier is the module level router for state queries
func NewQuerier(keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err error) {
switch path[0] {
case QueryEgress:
return queryEgress(ctx, path[1], req, keeper, legacyQuerierCdc)
case QueryMailbox:
return queryMailbox(ctx, path[1:], req, keeper, legacyQuerierCdc)
case LegacyQueryStorage:
return legacyQueryStorage(ctx, strings.Join(path[1:], "/"), req, keeper, legacyQuerierCdc)
case LegacyQueryKeys:
return legacyQueryKeys(ctx, strings.Join(path[1:], "/"), req, keeper, legacyQuerierCdc)
default:
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "unknown swingset query endpoint")
}
}
}
// nolint: unparam
func queryEgress(ctx sdk.Context, bech32 string, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) ([]byte, error) {
acc, err := sdk.AccAddressFromBech32(bech32)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest, err.Error())
}
egress := keeper.GetEgress(ctx, acc)
if egress.Peer.Empty() {
return []byte{}, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, fmt.Sprintf("egress %s not found", bech32))
}
bz, err := codec.MarshalJSONIndent(legacyQuerierCdc, egress)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
// nolint: unparam
func queryMailbox(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
peer := path[0]
value := keeper.GetMailbox(ctx, peer)
if value == "" {
return []byte{}, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "could not get peer mailbox")
}
bz, err2 := codec.MarshalJSONIndent(legacyQuerierCdc, vstoragetypes.Data{Value: value})
if err2 != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err2.Error())
}
return bz, nil
}
// nolint: unparam
func legacyQueryStorage(ctx sdk.Context, path string, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
entry := keeper.vstorageKeeper.GetEntry(ctx, path)
if !entry.HasData() {
return []byte{}, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "could not get swingset %+v", path)
}
bz, err2 := codec.MarshalJSONIndent(legacyQuerierCdc, vstoragetypes.Data{Value: entry.StringValue()})
if err2 != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err2.Error())
}
return bz, nil
}
// nolint: unparam
func legacyQueryKeys(ctx sdk.Context, path string, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
children := keeper.vstorageKeeper.GetChildren(ctx, path)
chlist := children.Children
if chlist == nil {
chlist = []string{}
}
bz, err2 := codec.MarshalJSONIndent(legacyQuerierCdc, vstoragetypes.Children{Children: chlist})
if err2 != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err2.Error())
}
return bz, nil
}