/
querier.go
114 lines (101 loc) · 3.77 KB
/
querier.go
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package keeper
import (
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/cosmos-sdk/codec"
cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/shentufoundation/shentu/v2/x/cert/types"
)
// 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 types.QueryCertifier:
return queryCertifier(ctx, path[1:], keeper, legacyQuerierCdc)
case types.QueryCertifiers:
return queryCertifiers(ctx, path[1:], keeper, legacyQuerierCdc)
case types.QueryCertifierByAlias:
return queryCertifierByAlias(ctx, path[1:], keeper, legacyQuerierCdc)
case types.QueryPlatform:
return queryPlatform(ctx, path[1:], keeper, legacyQuerierCdc)
case types.QueryCertificate:
return queryCertificate(ctx, path[1:], keeper, legacyQuerierCdc)
case types.QueryCertificates:
return queryCertificates(ctx, path[1:], req, keeper, legacyQuerierCdc)
default:
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "unknown cert query endpoint")
}
}
}
func validatePathLength(path []string, length int) error {
if len(path) != length {
return sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "Expecting %d args. Found %d.", length, len(path))
}
return nil
}
// queryCertifier returns information of a certifier.
func queryCertifier(ctx sdk.Context, path []string, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
if err := validatePathLength(path, 1); err != nil {
return nil, err
}
certifierAddress, err := sdk.AccAddressFromBech32(path[0])
if err != nil {
return nil, err
}
certifier, err := keeper.GetCertifier(ctx, certifierAddress)
if err != nil {
return nil, err
}
res, err = codec.MarshalJSONIndent(legacyQuerierCdc, certifier)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return res, nil
}
func queryCertifiers(ctx sdk.Context, path []string, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
err = validatePathLength(path, 0)
if err != nil {
return nil, err
}
res, err = codec.MarshalJSONIndent(legacyQuerierCdc, types.QueryResCertifiers{Certifiers: keeper.GetAllCertifiers(ctx)})
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return res, nil
}
// queryCertifierByAlias returns information of a certifier from certifier alias
func queryCertifierByAlias(ctx sdk.Context, path []string, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
if err := validatePathLength(path, 1); err != nil {
return nil, err
}
certifierAlias := path[0]
certifier, err := keeper.GetCertifierByAlias(ctx, certifierAlias)
if err != nil {
return nil, err
}
res, err = codec.MarshalJSONIndent(legacyQuerierCdc, certifier)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return res, nil
}
func queryPlatform(ctx sdk.Context, path []string, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) (res []byte, err error) {
if len(path) != 1 {
return []byte{}, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "Expecting 1 arg. Found %d.", len(path))
}
var validator cryptotypes.PubKey
err = legacyQuerierCdc.UnmarshalJSON([]byte(path[0]), validator)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidPubKey, path[0])
}
platform, ok := keeper.GetPlatform(ctx, validator)
if !ok {
return nil, nil
}
res, err = codec.MarshalJSONIndent(legacyQuerierCdc, platform)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return res, nil
}