benedettadavico
87 lines
2.8 KiB
Rust
87 lines
2.8 KiB
Rust
// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
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// SPDX-License-Identifier: Apache-2.0
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use cosmrs::bank::MsgSend;
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use cosmrs::tx::Msg;
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use cosmrs::{tx, AccountId, Coin, Denom};
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use nym_validator_client::http_client;
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use nym_validator_client::nyxd::CosmWasmClient;
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use nym_validator_client::signing::direct_wallet::DirectSecp256k1HdWallet;
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use nym_validator_client::signing::tx_signer::TxSigner;
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use nym_validator_client::signing::SignerData;
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// run with: cargo run --example offline_signing --features=nyxd-client
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#[tokio::main]
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async fn main() {
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let prefix = "n";
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let denom: Denom = "unym".parse().unwrap();
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let signer_mnemonic: bip39::Mnemonic = "<MNEMONIC WITH FUNDS HERE>".parse().unwrap();
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let validator = "https://rpc.sandbox.nymtech.net";
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let to_address: AccountId = "n1pefc2utwpy5w78p2kqdsfmpjxfwmn9d39k5mqa".parse().unwrap();
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let signer = DirectSecp256k1HdWallet::from_mnemonic(prefix, signer_mnemonic);
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let signer_address = signer.try_derive_accounts().unwrap()[0].address().clone();
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// local 'client' ONLY signing messages
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let tx_signer = signer;
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// possibly remote client that doesn't do ANY signing
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// (only broadcasts + queries for sequence numbers)
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let broadcaster = http_client(validator).unwrap();
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// get signer information
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let sequence_response = broadcaster.get_sequence(&signer_address).await.unwrap();
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let chain_id = broadcaster.get_chain_id().await.unwrap();
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let signer_data = SignerData::new_from_sequence_response(sequence_response, chain_id);
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// create (and sign) the send message
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let amount = vec![Coin {
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denom: denom.clone(),
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amount: 12345u32.into(),
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}];
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let send_msg = MsgSend {
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from_address: signer_address.clone(),
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to_address: to_address.clone(),
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amount,
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}
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.to_any()
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.unwrap();
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let memo = "example memo";
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let fee = tx::Fee::from_amount_and_gas(
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Coin {
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denom,
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amount: 2500u32.into(),
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},
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100000u32,
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);
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let tx_raw = tx_signer
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.sign_direct(&signer_address, vec![send_msg], fee, memo, signer_data)
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.unwrap();
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let tx_bytes = tx_raw.to_bytes().unwrap();
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// compare balances from before and after the tx
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let before = broadcaster
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.get_balance(&to_address, "unym".to_string())
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.await
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.unwrap()
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.unwrap();
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// broadcast the tx
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let res = tendermint_rpc::client::Client::broadcast_tx_commit(&broadcaster, tx_bytes)
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.await
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.unwrap();
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let after = broadcaster
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.get_balance(&to_address, "unym".to_string())
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.await
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.unwrap()
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.unwrap();
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println!("transaction result: {res:?})");
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println!("balance before: {before}");
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println!("balance after: {after}");
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}
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