Mukan Erkin Törük
88dd97a9f8
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69 lines
2.4 KiB
Go
69 lines
2.4 KiB
Go
package client
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import (
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"errors"
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"fmt"
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"git.cw.tr/mukan-network/mukan-sdk/client"
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"git.cw.tr/mukan-network/mukan-sdk/codec"
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abci "git.cw.tr/mukan-network/mukan-consensus/abci/types"
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clienttypes "git.cw.tr/mukan-network/mukan-ibc/modules/core/02-client/types"
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commitmenttypes "git.cw.tr/mukan-network/mukan-ibc/modules/core/23-commitment/types"
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ibcexported "git.cw.tr/mukan-network/mukan-ibc/modules/core/exported"
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)
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// QueryTendermintProof performs an ABCI query with the given key and returns
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// the value of the query, the proto encoded merkle proof, and the height of
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// the Tendermint block containing the state root. The desired tendermint height
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// to perform the query should be set in the client context. The query will be
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// performed at one below this height (at the IAVL version) in order to obtain
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// the correct merkle proof. Proof queries at height less than or equal to 2 are
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// not supported. Queries with a client context height of 0 will perform a query
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// at the latest state available.
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// Issue: https://git.cw.tr/mukan-network/mukan-sdk/issues/6567
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func QueryTendermintProof(clientCtx client.Context, key []byte) ([]byte, []byte, clienttypes.Height, error) {
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height := clientCtx.Height
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// ABCI queries at heights 1, 2 or less than or equal to 0 are not supported.
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// Base app does not support queries for height less than or equal to 1.
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// Therefore, a query at height 2 would be equivalent to a query at height 3.
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// A height of 0 will query with the latest state.
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if height != 0 && height <= 2 {
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return nil, nil, clienttypes.Height{}, errors.New("proof queries at height <= 2 are not supported")
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}
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// Use the IAVL height if a valid tendermint height is passed in.
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// A height of 0 will query with the latest state.
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if height != 0 {
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height--
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}
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req := abci.RequestQuery{
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Path: fmt.Sprintf("store/%s/key", ibcexported.StoreKey),
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Height: height,
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Data: key,
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Prove: true,
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}
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res, err := clientCtx.QueryABCI(req)
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if err != nil {
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return nil, nil, clienttypes.Height{}, err
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}
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merkleProof, err := commitmenttypes.ConvertProofs(res.ProofOps)
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if err != nil {
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return nil, nil, clienttypes.Height{}, err
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}
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cdc := codec.NewProtoCodec(clientCtx.InterfaceRegistry)
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proofBz, err := cdc.Marshal(&merkleProof)
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if err != nil {
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return nil, nil, clienttypes.Height{}, err
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}
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revision := clienttypes.ParseChainID(clientCtx.ChainID)
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return res.Value, proofBz, clienttypes.NewHeight(revision, uint64(res.Height)+1), nil
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}
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