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utils.go
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/
utils.go
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package utils
import (
"context"
"errors"
"fmt"
"io/ioutil"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/codec"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
clientutils "github.com/cosmos/ibc-go/v3/modules/core/02-client/client/utils"
clienttypes "github.com/cosmos/ibc-go/v3/modules/core/02-client/types"
"github.com/cosmos/ibc-go/v3/modules/core/03-connection/types"
commitmenttypes "github.com/cosmos/ibc-go/v3/modules/core/23-commitment/types"
host "github.com/cosmos/ibc-go/v3/modules/core/24-host"
ibcclient "github.com/cosmos/ibc-go/v3/modules/core/client"
"github.com/cosmos/ibc-go/v3/modules/core/exported"
)
// QueryConnection returns a connection end.
// If prove is true, it performs an ABCI store query in order to retrieve the merkle proof. Otherwise,
// it uses the gRPC query client.
func QueryConnection(
clientCtx client.Context, connectionID string, prove bool,
) (*types.QueryConnectionResponse, error) {
if prove {
return queryConnectionABCI(clientCtx, connectionID)
}
queryClient := types.NewQueryClient(clientCtx)
req := &types.QueryConnectionRequest{
ConnectionId: connectionID,
}
return queryClient.Connection(context.Background(), req)
}
func queryConnectionABCI(clientCtx client.Context, connectionID string) (*types.QueryConnectionResponse, error) {
key := host.ConnectionKey(connectionID)
value, proofBz, proofHeight, err := ibcclient.QueryTendermintProof(clientCtx, key)
if err != nil {
return nil, err
}
// check if connection exists
if len(value) == 0 {
return nil, sdkerrors.Wrap(types.ErrConnectionNotFound, connectionID)
}
cdc := codec.NewProtoCodec(clientCtx.InterfaceRegistry)
var connection types.ConnectionEnd
if err := cdc.Unmarshal(value, &connection); err != nil {
return nil, err
}
return types.NewQueryConnectionResponse(connection, proofBz, proofHeight), nil
}
// QueryClientConnections queries the connection paths registered for a particular client.
// If prove is true, it performs an ABCI store query in order to retrieve the merkle proof. Otherwise,
// it uses the gRPC query client.
func QueryClientConnections(
clientCtx client.Context, clientID string, prove bool,
) (*types.QueryClientConnectionsResponse, error) {
if prove {
return queryClientConnectionsABCI(clientCtx, clientID)
}
queryClient := types.NewQueryClient(clientCtx)
req := &types.QueryClientConnectionsRequest{
ClientId: clientID,
}
return queryClient.ClientConnections(context.Background(), req)
}
func queryClientConnectionsABCI(clientCtx client.Context, clientID string) (*types.QueryClientConnectionsResponse, error) {
key := host.ClientConnectionsKey(clientID)
value, proofBz, proofHeight, err := ibcclient.QueryTendermintProof(clientCtx, key)
if err != nil {
return nil, err
}
// check if connection paths exist
if len(value) == 0 {
return nil, sdkerrors.Wrap(types.ErrClientConnectionPathsNotFound, clientID)
}
var paths []string
if err := clientCtx.LegacyAmino.Unmarshal(value, &paths); err != nil {
return nil, err
}
return types.NewQueryClientConnectionsResponse(paths, proofBz, proofHeight), nil
}
// QueryConnectionClientState returns the ClientState of a connection end. If
// prove is true, it performs an ABCI store query in order to retrieve the
// merkle proof. Otherwise, it uses the gRPC query client.
func QueryConnectionClientState(
clientCtx client.Context, connectionID string, prove bool,
) (*types.QueryConnectionClientStateResponse, error) {
queryClient := types.NewQueryClient(clientCtx)
req := &types.QueryConnectionClientStateRequest{
ConnectionId: connectionID,
}
res, err := queryClient.ConnectionClientState(context.Background(), req)
if err != nil {
return nil, err
}
if prove {
clientStateRes, err := clientutils.QueryClientStateABCI(clientCtx, res.IdentifiedClientState.ClientId)
if err != nil {
return nil, err
}
// use client state returned from ABCI query in case query height differs
identifiedClientState := clienttypes.IdentifiedClientState{
ClientId: res.IdentifiedClientState.ClientId,
ClientState: clientStateRes.ClientState,
}
res = types.NewQueryConnectionClientStateResponse(identifiedClientState, clientStateRes.Proof, clientStateRes.ProofHeight)
}
return res, nil
}
// QueryConnectionConsensusState returns the ConsensusState of a connection end. If
// prove is true, it performs an ABCI store query in order to retrieve the
// merkle proof. Otherwise, it uses the gRPC query client.
func QueryConnectionConsensusState(
clientCtx client.Context, connectionID string, height clienttypes.Height, prove bool,
) (*types.QueryConnectionConsensusStateResponse, error) {
queryClient := types.NewQueryClient(clientCtx)
req := &types.QueryConnectionConsensusStateRequest{
ConnectionId: connectionID,
RevisionNumber: height.RevisionNumber,
RevisionHeight: height.RevisionHeight,
}
res, err := queryClient.ConnectionConsensusState(context.Background(), req)
if err != nil {
return nil, err
}
if prove {
consensusStateRes, err := clientutils.QueryConsensusStateABCI(clientCtx, res.ClientId, height)
if err != nil {
return nil, err
}
res = types.NewQueryConnectionConsensusStateResponse(res.ClientId, consensusStateRes.ConsensusState, height, consensusStateRes.Proof, consensusStateRes.ProofHeight)
}
return res, nil
}
// ParseClientState unmarshals a cmd input argument from a JSON string to a client state
// If the input is not a JSON, it looks for a path to the JSON file
func ParseClientState(cdc *codec.LegacyAmino, arg string) (exported.ClientState, error) {
var clientState exported.ClientState
if err := cdc.UnmarshalJSON([]byte(arg), &clientState); err != nil {
// check for file path if JSON input is not provided
contents, err := ioutil.ReadFile(arg)
if err != nil {
return nil, errors.New("either JSON input nor path to .json file were provided")
}
if err := cdc.UnmarshalJSON(contents, &clientState); err != nil {
return nil, fmt.Errorf("error unmarshalling client state: %w", err)
}
}
return clientState, nil
}
// ParsePrefix unmarshals an cmd input argument from a JSON string to a commitment
// Prefix. If the input is not a JSON, it looks for a path to the JSON file.
func ParsePrefix(cdc *codec.LegacyAmino, arg string) (commitmenttypes.MerklePrefix, error) {
var prefix commitmenttypes.MerklePrefix
if err := cdc.UnmarshalJSON([]byte(arg), &prefix); err != nil {
// check for file path if JSON input is not provided
contents, err := ioutil.ReadFile(arg)
if err != nil {
return commitmenttypes.MerklePrefix{}, errors.New("neither JSON input nor path to .json file were provided")
}
if err := cdc.UnmarshalJSON(contents, &prefix); err != nil {
return commitmenttypes.MerklePrefix{}, fmt.Errorf("error unmarshalling commitment prefix: %w", err)
}
}
return prefix, nil
}
// ParseProof unmarshals a cmd input argument from a JSON string to a commitment
// Proof. If the input is not a JSON, it looks for a path to the JSON file. It
// then marshals the commitment proof into a proto encoded byte array.
func ParseProof(cdc *codec.LegacyAmino, arg string) ([]byte, error) {
var merkleProof commitmenttypes.MerkleProof
if err := cdc.UnmarshalJSON([]byte(arg), &merkleProof); err != nil {
// check for file path if JSON input is not provided
contents, err := ioutil.ReadFile(arg)
if err != nil {
return nil, errors.New("neither JSON input nor path to .json file were provided")
}
if err := cdc.UnmarshalJSON(contents, &merkleProof); err != nil {
return nil, fmt.Errorf("error unmarshalling commitment proof: %w", err)
}
}
return cdc.Marshal(&merkleProof)
}