Explanation of executing modules inside a CosmWasm contract using sending Native SCRT as an example.
Sending Native SCRT from a contract is realtively trivial and can be done using the BankMsg::Send message.
This is a contract-to-module call. Any native denoms can be send in this way (ex. native IBC tokens).
#[entry_point]
pub fn execute(
deps: DepsMut,
env: Env,
info: MessageInfo,
msg: ExecuteMsg // this is a custom struct defined in your msg.rs
) -> StdResult<Response> {
// example: send 33 uscrt
let coins_to_send: Vec<Coin> = vec![Coin {
denom: "uscrt".to_string(),
amount: Uint128::from(33u128),
}];
let message = CosmosMsg::Bank(BankMsg::Send {
// replace with recipient of your choice
to_address: info.sender.clone().into_string(),
amount: coins_to_send,
});
let res = Response::new().add_message(message);
Ok(res)
}
pub fn handle<S: Storage, A: Api, Q: Querier>(
_deps: &mut Extern<S, A, Q>,
env: Env,
_msg: HandleMsg, // this is a custom struct defined in your msg.rs
) -> StdResult<HandleResponse> {
// example: send 33 uscrt
let coins_to_send: Vec<Coin> = vec![Coin {
denom: "uscrt".to_string(),
amount: Uint128::from(33u128),
}];
let res = HandleResponse {
messages: vec![CosmosMsg::Bank(BankMsg::Send {
from_address: env.contract.address,
// replace with recipient of your choice
to_address: env.message.sender,
amount: coins_to_send,
})],
log: vec![],
data: None,
};
Ok(res)
}
Having Trouble? Always make sure your contract has enough funds to begin with!
You can send some coins to your contract like this:
secretcli tx bank send <from-account> <contract-address> 1000uscrt
You can always see decrypted error messages from the contract like so:
secretcli q compute tx <tx_hash>
Transaction logs
You can see the spent coins as events when you query for the transaction:
