0g-chain/x/evmutil/keeper/grpc_query.go

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package keeper
import (
"context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/query"
"github.com/kava-labs/kava/x/evmutil/types"
)
type queryServer struct {
keeper Keeper
}
// NewQueryServerImpl creates a new server for handling gRPC queries.
func NewQueryServerImpl(k Keeper) types.QueryServer {
return &queryServer{keeper: k}
}
var _ types.QueryServer = queryServer{}
// Params queries module params
func (s queryServer) Params(stdCtx context.Context, req *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, "empty request")
}
ctx := sdk.UnwrapSDKContext(stdCtx)
params := s.keeper.GetParams(ctx)
return &types.QueryParamsResponse{Params: params}, nil
}
// DeployedCosmosCoinContracts gets contract addresses for deployed erc20 contracts
// representing cosmos-sdk coins
func (s queryServer) DeployedCosmosCoinContracts(
goCtx context.Context,
req *types.QueryDeployedCosmosCoinContractsRequest,
) (res *types.QueryDeployedCosmosCoinContractsResponse, err error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, "empty request")
}
ctx := sdk.UnwrapSDKContext(goCtx)
if len(req.CosmosDenoms) > 0 {
res, err = getDeployedCosmosCoinContractsByDenoms(&s.keeper, ctx, req.CosmosDenoms)
} else {
// requesting no sdk denoms is a request for all denoms
res, err = getAllDeployedCosmosCoinContractsPage(&s.keeper, ctx, req.Pagination)
}
return res, err
}
// getAllDeployedCosmosCoinContractsPage gets a page of deployed contracts (no filtering)
func getAllDeployedCosmosCoinContractsPage(
k *Keeper, ctx sdk.Context, pagination *query.PageRequest,
) (*types.QueryDeployedCosmosCoinContractsResponse, error) {
contracts := make([]types.DeployedCosmosCoinContract, 0)
contractStore := prefix.NewStore(
ctx.KVStore(k.storeKey),
types.DeployedCosmosCoinContractKeyPrefix,
)
pageRes, err := query.FilteredPaginate(contractStore, pagination,
func(key []byte, value []byte, accumulate bool) (bool, error) {
if !accumulate {
return true, nil
}
address := types.BytesToInternalEVMAddress(value)
contract := types.DeployedCosmosCoinContract{
CosmosDenom: string(key),
Address: &address,
}
contracts = append(contracts, contract)
return true, nil
})
if err != nil {
return &types.QueryDeployedCosmosCoinContractsResponse{}, err
}
return &types.QueryDeployedCosmosCoinContractsResponse{
DeployedCosmosCoinContracts: contracts,
Pagination: pageRes,
}, nil
}
func getDeployedCosmosCoinContractsByDenoms(
k *Keeper, ctx sdk.Context, denoms []string,
) (*types.QueryDeployedCosmosCoinContractsResponse, error) {
if len(denoms) > query.DefaultLimit {
// forego dealing with pagination by rejecting reqs for >100 denoms
return nil, status.Errorf(codes.InvalidArgument, "maximum of %d denoms allowed per request", query.DefaultLimit)
}
contracts := make([]types.DeployedCosmosCoinContract, 0, len(denoms))
for _, denom := range denoms {
address, found := k.GetDeployedCosmosCoinContract(ctx, denom)
if !found {
continue
}
contracts = append(contracts, types.NewDeployedCosmosCoinContract(denom, address))
}
return &types.QueryDeployedCosmosCoinContractsResponse{
DeployedCosmosCoinContracts: contracts,
}, nil
}