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utils.go
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utils.go
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package utils
import (
"fmt"
abci "github.com/tendermint/tendermint/abci/types"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/cosmos/cosmos-sdk/client/context"
"github.com/cosmos/cosmos-sdk/x/ibc/02-client/exported"
"github.com/cosmos/cosmos-sdk/x/ibc/02-client/types"
ibctmtypes "github.com/cosmos/cosmos-sdk/x/ibc/07-tendermint/types"
commitmenttypes "github.com/cosmos/cosmos-sdk/x/ibc/23-commitment/types"
host "github.com/cosmos/cosmos-sdk/x/ibc/24-host"
)
// QueryAllClientStates returns all the light client states. It _does not_ return
// any merkle proof.
func QueryAllClientStates(cliCtx context.CLIContext, page, limit int) ([]exported.ClientState, int64, error) {
params := types.NewQueryAllClientsParams(page, limit)
bz, err := cliCtx.Codec.MarshalJSON(params)
if err != nil {
return nil, 0, fmt.Errorf("failed to marshal query params: %w", err)
}
route := fmt.Sprintf("custom/%s/%s/%s", "ibc", types.QuerierRoute, types.QueryAllClients)
res, height, err := cliCtx.QueryWithData(route, bz)
if err != nil {
return nil, 0, err
}
var clients []exported.ClientState
err = cliCtx.Codec.UnmarshalJSON(res, &clients)
if err != nil {
return nil, 0, fmt.Errorf("failed to unmarshal light clients: %w", err)
}
return clients, height, nil
}
// QueryClientState queries the store to get the light client state and a merkle
// proof.
func QueryClientState(
cliCtx context.CLIContext, clientID string, prove bool,
) (types.StateResponse, error) {
req := abci.RequestQuery{
Path: "store/ibc/key",
Data: prefixClientKey(clientID, host.KeyClientState()),
Prove: prove,
}
res, err := cliCtx.QueryABCI(req)
if err != nil {
return types.StateResponse{}, err
}
var clientState exported.ClientState
if err := cliCtx.Codec.UnmarshalBinaryBare(res.Value, &clientState); err != nil {
return types.StateResponse{}, err
}
clientStateRes := types.NewClientStateResponse(clientID, clientState, res.Proof, res.Height)
return clientStateRes, nil
}
// QueryConsensusState queries the store to get the consensus state and a merkle
// proof.
func QueryConsensusState(
cliCtx context.CLIContext, clientID string, height uint64, prove bool,
) (types.ConsensusStateResponse, error) {
var conStateRes types.ConsensusStateResponse
req := abci.RequestQuery{
Path: "store/ibc/key",
Data: prefixClientKey(clientID, host.KeyConsensusState(height)),
Prove: prove,
}
res, err := cliCtx.QueryABCI(req)
if err != nil {
return conStateRes, err
}
var cs exported.ConsensusState
if err := cliCtx.Codec.UnmarshalBinaryBare(res.Value, &cs); err != nil {
return conStateRes, err
}
return types.NewConsensusStateResponse(clientID, cs, res.Proof, res.Height), nil
}
// QueryTendermintHeader takes a client context and returns the appropriate
// tendermint header
func QueryTendermintHeader(cliCtx context.CLIContext) (ibctmtypes.Header, int64, error) {
node, err := cliCtx.GetNode()
if err != nil {
return ibctmtypes.Header{}, 0, err
}
info, err := node.ABCIInfo()
if err != nil {
return ibctmtypes.Header{}, 0, err
}
height := info.Response.LastBlockHeight
commit, err := node.Commit(&height)
if err != nil {
return ibctmtypes.Header{}, 0, err
}
validators, err := node.Validators(&height, 0, 10000)
if err != nil {
return ibctmtypes.Header{}, 0, err
}
header := ibctmtypes.Header{
SignedHeader: commit.SignedHeader,
ValidatorSet: tmtypes.NewValidatorSet(validators.Validators),
}
return header, height, nil
}
// QueryNodeConsensusState takes a client context and returns the appropriate
// tendermint consensus state
func QueryNodeConsensusState(cliCtx context.CLIContext) (ibctmtypes.ConsensusState, int64, error) {
node, err := cliCtx.GetNode()
if err != nil {
return ibctmtypes.ConsensusState{}, 0, err
}
info, err := node.ABCIInfo()
if err != nil {
return ibctmtypes.ConsensusState{}, 0, err
}
height := info.Response.LastBlockHeight
commit, err := node.Commit(&height)
if err != nil {
return ibctmtypes.ConsensusState{}, 0, err
}
validators, err := node.Validators(&height, 0, 10000)
if err != nil {
return ibctmtypes.ConsensusState{}, 0, err
}
state := ibctmtypes.ConsensusState{
Timestamp: commit.Time,
Root: commitmenttypes.NewMerkleRoot(commit.AppHash),
ValidatorSet: tmtypes.NewValidatorSet(validators.Validators),
}
return state, height, nil
}
func prefixClientKey(clientID string, key []byte) []byte {
return append([]byte(fmt.Sprintf("clients/%s/", clientID)), key...)
}