0g-chain/x/bep3/keeper/querier.go
Denali Marsh 6c68e41758
[R4R] bep3 module audit revisions (#505)
* most audit revisions

* remove expected income

* update begin block spec

* filter queryAtomicSwaps, add queryAssetSupplies

* update old address

* update test

* Remove legacy method

* remove legacy comment

* address PR comments

* IsValid for SwapDirection, SwapStatus

* fix rng logging

* query asset supplies

* return [64]byte from rng

* remove cross chain field from MsgCreateAtomicSwap

* move swap filtering to querier

* rename Limit field to SupplyLimit
2020-05-12 13:15:38 -07:00

169 lines
5.0 KiB
Go

package keeper
import (
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/kava-labs/kava/x/bep3/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.QueryGetAssetSupply:
return queryAssetSupply(ctx, req, keeper)
case types.QueryGetAssetSupplies:
return queryAssetSupplies(ctx, req, keeper)
case types.QueryGetAtomicSwap:
return queryAtomicSwap(ctx, req, keeper)
case types.QueryGetAtomicSwaps:
return queryAtomicSwaps(ctx, req, keeper)
case types.QueryGetParams:
return queryGetParams(ctx, req, keeper)
default:
return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unknown %s query endpoint", types.ModuleName)
}
}
}
func queryAssetSupply(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) {
// Decode request
var requestParams types.QueryAssetSupply
err := types.ModuleCdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error())
}
assetSupply, found := keeper.GetAssetSupply(ctx, []byte(requestParams.Denom))
if !found {
return nil, sdkerrors.Wrap(types.ErrAssetSupplyNotFound, string(requestParams.Denom))
}
// Encode results
bz, err := codec.MarshalJSONIndent(types.ModuleCdc, assetSupply)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryAssetSupplies(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, err error) {
assets := keeper.GetAllAssetSupplies(ctx)
if assets == nil {
assets = types.AssetSupplies{}
}
bz, err := codec.MarshalJSONIndent(types.ModuleCdc, assets)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryAtomicSwap(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) {
// Decode request
var requestParams types.QueryAtomicSwapByID
err := types.ModuleCdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error())
}
// Lookup atomic swap
atomicSwap, found := keeper.GetAtomicSwap(ctx, requestParams.SwapID)
if !found {
return nil, sdkerrors.Wrapf(types.ErrAtomicSwapNotFound, "%d", requestParams.SwapID)
}
// Encode results
bz, err := codec.MarshalJSONIndent(types.ModuleCdc, atomicSwap)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryAtomicSwaps(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) {
var params types.QueryAtomicSwaps
err := types.ModuleCdc.UnmarshalJSON(req.Data, &params)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error())
}
unfilteredSwaps := keeper.GetAllAtomicSwaps(ctx)
swaps := filterAtomicSwaps(ctx, unfilteredSwaps, params)
if swaps == nil {
swaps = types.AtomicSwaps{}
}
bz, err := codec.MarshalJSONIndent(types.ModuleCdc, swaps)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
// query params in the bep3 store
func queryGetParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) {
// Get params
params := keeper.GetParams(ctx)
// Encode results
bz, err := codec.MarshalJSONIndent(types.ModuleCdc, params)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
// getAtomicSwapsFiltered retrieves atomic swaps filtered by a given set of params.
// If no filters are provided, all atomic swaps will be returned in paginated form.
func filterAtomicSwaps(ctx sdk.Context, swaps types.AtomicSwaps, params types.QueryAtomicSwaps) types.AtomicSwaps {
filteredSwaps := make(types.AtomicSwaps, 0, len(swaps))
for _, s := range swaps {
matchInvolve, matchExpiration, matchStatus, matchDirection := true, true, true, true
// match involved address (if supplied)
if len(params.Involve) > 0 {
matchInvolve = s.Sender.Equals(params.Involve) || s.Recipient.Equals(params.Involve)
}
// match expiration block limit (if supplied)
if params.Expiration > 0 {
matchExpiration = s.ExpireHeight <= params.Expiration
}
// match status (if supplied/valid)
if params.Status.IsValid() {
matchStatus = s.Status == params.Status
}
// match direction (if supplied/valid)
if params.Direction.IsValid() {
matchDirection = s.Direction == params.Direction
}
if matchInvolve && matchExpiration && matchStatus && matchDirection {
filteredSwaps = append(filteredSwaps, s)
}
}
start, end := client.Paginate(len(filteredSwaps), params.Page, params.Limit, 100)
if start < 0 || end < 0 {
filteredSwaps = types.AtomicSwaps{}
} else {
filteredSwaps = filteredSwaps[start:end]
}
return filteredSwaps
}