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receiver.rs
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receiver.rs
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use schemars::JsonSchema;
use serde::{Deserialize, Serialize};
use cosmwasm_std::{to_binary, Binary, CosmosMsg, HumanAddr, StdResult, Uint128, WasmMsg};
/// Cw20ReceiveMsg should be de/serialized under `Receive()` variant in a HandleMsg
#[derive(Serialize, Deserialize, Clone, PartialEq, JsonSchema, Debug)]
#[serde(rename_all = "snake_case")]
pub struct Cw20ReceiveMsg {
pub sender: HumanAddr,
pub amount: Uint128,
pub msg: Option<Binary>,
}
impl Cw20ReceiveMsg {
/// serializes the message
pub fn into_binary(self) -> StdResult<Binary> {
let msg = ReceiverHandleMsg::Receive(self);
to_binary(&msg)
}
/// creates a cosmos_msg sending this struct to the named contract
pub fn into_cosmos_msg(self, contract_addr: HumanAddr) -> StdResult<CosmosMsg> {
let msg = self.into_binary()?;
let execute = WasmMsg::Execute {
contract_addr,
msg,
send: vec![],
};
Ok(execute.into())
}
}
// This is just a helper to properly serialize the above message
#[derive(Serialize, Deserialize, Clone, PartialEq, JsonSchema, Debug)]
#[serde(rename_all = "snake_case")]
enum ReceiverHandleMsg {
Receive(Cw20ReceiveMsg),
}