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contract.rs
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contract.rs
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use cosmos_sdk_proto::cosmos::bank::v1beta1::MsgSend;
use cosmos_sdk_proto::cosmos::tx::v1beta1::{TxBody, TxRaw};
use cosmwasm_std::{
entry_point, to_binary, Binary, Deps, DepsMut, Env, MessageInfo, Response, StdError, StdResult,
};
use cw2::set_contract_version;
use prost::Message as ProstMessage;
use crate::msg::{ExecuteMsg, GetRecipientTxsResponse, InstantiateMsg, MigrateMsg, QueryMsg};
use crate::state::{Transfer, RECIPIENT_TXS, TRANSFERS};
use neutron_sdk::bindings::msg::NeutronMsg;
use neutron_sdk::bindings::query::{NeutronQuery, QueryRegisteredQueryResponse};
use neutron_sdk::bindings::types::{Height, KVKey};
use neutron_sdk::interchain_queries::queries::{
get_registered_query, query_balance, query_bank_total, query_delegations,
query_distribution_fee_pool, query_government_proposals, query_staking_validators,
};
use neutron_sdk::interchain_queries::{
new_register_balance_query_msg, new_register_bank_total_supply_query_msg,
new_register_delegator_delegations_query_msg, new_register_distribution_fee_pool_query_msg,
new_register_gov_proposal_query_msg, new_register_staking_validators_query_msg,
new_register_transfers_query_msg,
};
use neutron_sdk::sudo::msg::SudoMsg;
use neutron_sdk::{NeutronError, NeutronResult};
use neutron_sdk::interchain_queries::types::{
TransactionFilterItem, TransactionFilterOp, TransactionFilterValue,
COSMOS_SDK_TRANSFER_MSG_URL, RECIPIENT_FIELD,
};
use serde_json_wasm;
/// defines the incoming transfers limit to make a case of failed callback possible.
const MAX_ALLOWED_TRANSFER: u64 = 20000;
const MAX_ALLOWED_MESSAGES: usize = 20;
const CONTRACT_NAME: &str = concat!("crates.io:neutron-sdk__", env!("CARGO_PKG_NAME"));
const CONTRACT_VERSION: &str = env!("CARGO_PKG_VERSION");
#[cfg_attr(not(feature = "library"), entry_point)]
pub fn instantiate(
deps: DepsMut,
_env: Env,
_info: MessageInfo,
_msg: InstantiateMsg,
) -> NeutronResult<Response> {
deps.api.debug("WASMDEBUG: instantiate");
set_contract_version(deps.storage, CONTRACT_NAME, CONTRACT_VERSION)?;
Ok(Response::default())
}
#[cfg_attr(not(feature = "library"), entry_point)]
pub fn execute(
_deps: DepsMut<NeutronQuery>,
_env: Env,
_: MessageInfo,
msg: ExecuteMsg,
) -> NeutronResult<Response<NeutronMsg>> {
match msg {
ExecuteMsg::RegisterBalanceQuery {
connection_id,
addr,
denom,
update_period,
} => register_balance_query(connection_id, addr, denom, update_period),
ExecuteMsg::RegisterBankTotalSupplyQuery {
connection_id,
denoms,
update_period,
} => register_bank_total_supply_query(connection_id, denoms, update_period),
ExecuteMsg::RegisterDistributionFeePoolQuery {
connection_id,
update_period,
} => register_distribution_fee_pool_query(connection_id, update_period),
ExecuteMsg::RegisterGovernmentProposalsQuery {
connection_id,
proposals_ids,
update_period,
} => register_gov_proposal_query(connection_id, proposals_ids, update_period),
ExecuteMsg::RegisterStakingValidatorsQuery {
connection_id,
validators,
update_period,
} => register_staking_validators_query(connection_id, validators, update_period),
ExecuteMsg::RegisterDelegatorDelegationsQuery {
connection_id,
delegator,
validators,
update_period,
} => register_delegations_query(connection_id, delegator, validators, update_period),
ExecuteMsg::RegisterTransfersQuery {
connection_id,
recipient,
update_period,
min_height,
} => register_transfers_query(connection_id, recipient, update_period, min_height),
ExecuteMsg::UpdateInterchainQuery {
query_id,
new_keys,
new_update_period,
new_recipient,
} => update_interchain_query(query_id, new_keys, new_update_period, new_recipient),
ExecuteMsg::RemoveInterchainQuery { query_id } => remove_interchain_query(query_id),
}
}
pub fn register_balance_query(
connection_id: String,
addr: String,
denom: String,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_balance_query_msg(connection_id, addr, denom, update_period)?;
Ok(Response::new().add_message(msg))
}
pub fn register_bank_total_supply_query(
connection_id: String,
denoms: Vec<String>,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_bank_total_supply_query_msg(connection_id, denoms, update_period)?;
Ok(Response::new().add_message(msg))
}
pub fn register_distribution_fee_pool_query(
connection_id: String,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_distribution_fee_pool_query_msg(connection_id, update_period)?;
Ok(Response::new().add_message(msg))
}
pub fn register_gov_proposal_query(
connection_id: String,
proposals_ids: Vec<u64>,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_gov_proposal_query_msg(connection_id, proposals_ids, update_period)?;
Ok(Response::new().add_message(msg))
}
pub fn register_staking_validators_query(
connection_id: String,
validators: Vec<String>,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_staking_validators_query_msg(connection_id, validators, update_period)?;
Ok(Response::new().add_message(msg))
}
pub fn register_delegations_query(
connection_id: String,
delegator: String,
validators: Vec<String>,
update_period: u64,
) -> NeutronResult<Response<NeutronMsg>> {
let msg = new_register_delegator_delegations_query_msg(
connection_id,
delegator,
validators,
update_period,
)?;
Ok(Response::new().add_message(msg))
}
pub fn register_transfers_query(
connection_id: String,
recipient: String,
update_period: u64,
min_height: Option<u64>,
) -> NeutronResult<Response<NeutronMsg>> {
let msg =
new_register_transfers_query_msg(connection_id, recipient, update_period, min_height)?;
Ok(Response::new().add_message(msg))
}
pub fn update_interchain_query(
query_id: u64,
new_keys: Option<Vec<KVKey>>,
new_update_period: Option<u64>,
new_recipient: Option<String>,
) -> NeutronResult<Response<NeutronMsg>> {
let new_filter = new_recipient.map(|recipient| {
vec![TransactionFilterItem {
field: RECIPIENT_FIELD.to_string(),
op: TransactionFilterOp::Eq,
value: TransactionFilterValue::String(recipient),
}]
});
let update_msg =
NeutronMsg::update_interchain_query(query_id, new_keys, new_update_period, new_filter)?;
Ok(Response::new().add_message(update_msg))
}
pub fn remove_interchain_query(query_id: u64) -> NeutronResult<Response<NeutronMsg>> {
let remove_msg = NeutronMsg::remove_interchain_query(query_id);
Ok(Response::new().add_message(remove_msg))
}
#[cfg_attr(not(feature = "library"), entry_point)]
pub fn query(deps: Deps<NeutronQuery>, env: Env, msg: QueryMsg) -> NeutronResult<Binary> {
match msg {
//TODO: check if query.result.height is too old (for all interchain queries)
QueryMsg::Balance { query_id } => Ok(to_binary(&query_balance(deps, env, query_id)?)?),
QueryMsg::BankTotalSupply { query_id } => {
Ok(to_binary(&query_bank_total(deps, env, query_id)?)?)
}
QueryMsg::DistributionFeePool { query_id } => Ok(to_binary(&query_distribution_fee_pool(
deps, env, query_id,
)?)?),
QueryMsg::StakingValidators { query_id } => {
Ok(to_binary(&query_staking_validators(deps, env, query_id)?)?)
}
QueryMsg::GovernmentProposals { query_id } => Ok(to_binary(&query_government_proposals(
deps, env, query_id,
)?)?),
QueryMsg::GetDelegations { query_id } => {
Ok(to_binary(&query_delegations(deps, env, query_id)?)?)
}
QueryMsg::GetRegisteredQuery { query_id } => {
Ok(to_binary(&get_registered_query(deps, query_id)?)?)
}
QueryMsg::GetRecipientTxs { recipient } => query_recipient_txs(deps, recipient),
}
}
fn query_recipient_txs(deps: Deps<NeutronQuery>, recipient: String) -> NeutronResult<Binary> {
let txs = RECIPIENT_TXS
.load(deps.storage, &recipient)
.unwrap_or_default();
Ok(to_binary(&GetRecipientTxsResponse { transfers: txs })?)
}
#[cfg_attr(not(feature = "library"), entry_point)]
pub fn migrate(deps: DepsMut, _env: Env, _msg: MigrateMsg) -> StdResult<Response> {
deps.api.debug("WASMDEBUG: migrate");
Ok(Response::default())
}
#[entry_point]
pub fn sudo(deps: DepsMut<NeutronQuery>, env: Env, msg: SudoMsg) -> NeutronResult<Response> {
match msg {
// For handling tx query result
SudoMsg::TxQueryResult {
query_id,
height,
data,
} => sudo_tx_query_result(deps, env, query_id, height, data),
// For handling kv query result
SudoMsg::KVQueryResult { query_id } => sudo_kv_query_result(deps, env, query_id),
_ => Ok(Response::default()),
}
}
/// sudo_check_tx_query_result is an example callback for transaction query results that stores the
/// deposits received as a result on the registered query in the contract's state.
pub fn sudo_tx_query_result(
deps: DepsMut<NeutronQuery>,
_env: Env,
query_id: u64,
_height: Height,
data: Binary,
) -> NeutronResult<Response> {
// Decode the transaction data
let tx: TxRaw = TxRaw::decode(data.as_slice())?;
let body: TxBody = TxBody::decode(tx.body_bytes.as_slice())?;
// Get the registered query by ID and retrieve the raw query string
let registered_query: QueryRegisteredQueryResponse =
get_registered_query(deps.as_ref(), query_id)?;
let transactions_filter = registered_query.registered_query.transactions_filter;
#[allow(clippy::match_single_binding)]
// Depending of the query type, check the transaction data to see whether is satisfies
// the original query. If you don't write specific checks for a transaction query type,
// all submitted results will be treated as valid.
//
// TODO: come up with solution to determine transactions filter type
match registered_query.registered_query.query_type {
_ => {
// For transfer queries, query data looks like `[{"field:"transfer.recipient", "op":"eq", "value":"some_address"}]`
let query_data: Vec<TransactionFilterItem> =
serde_json_wasm::from_str(transactions_filter.as_str())?;
let recipient = query_data
.iter()
.find(|x| x.field == RECIPIENT_FIELD && x.op == TransactionFilterOp::Eq)
.map(|x| match &x.value {
TransactionFilterValue::String(v) => v.as_str(),
_ => "",
})
.unwrap_or("");
let deposits = recipient_deposits_from_tx_body(body, recipient)?;
// If we didn't find a Send message with the correct recipient, return an error, and
// this query result will be rejected by Neutron: no data will be saved to state.
if deposits.is_empty() {
return Err(NeutronError::Std(StdError::generic_err(
"failed to find a matching transaction message",
)));
}
let mut stored_transfers: u64 = TRANSFERS.load(deps.storage).unwrap_or_default();
stored_transfers += deposits.len() as u64;
TRANSFERS.save(deps.storage, &stored_transfers)?;
check_deposits_size(&deposits)?;
let mut stored_deposits: Vec<Transfer> = RECIPIENT_TXS
.load(deps.storage, recipient)
.unwrap_or_default();
stored_deposits.extend(deposits);
RECIPIENT_TXS.save(deps.storage, recipient, &stored_deposits)?;
Ok(Response::new())
}
}
}
/// parses tx body and retrieves transactions to the given recipient.
fn recipient_deposits_from_tx_body(
tx_body: TxBody,
recipient: &str,
) -> NeutronResult<Vec<Transfer>> {
let mut deposits: Vec<Transfer> = vec![];
// Only handle up to MAX_ALLOWED_MESSAGES messages, everything else
// will be ignored to prevent 'out of gas' conditions.
// Note: in real contracts you will have to somehow save ignored
// data in order to handle it later.
for msg in tx_body.messages.iter().take(MAX_ALLOWED_MESSAGES) {
// Skip all messages in this transaction that are not Send messages.
if msg.type_url != *COSMOS_SDK_TRANSFER_MSG_URL.to_string() {
continue;
}
// Parse a Send message and check that it has the required recipient.
let transfer_msg: MsgSend = MsgSend::decode(msg.value.as_slice())?;
if transfer_msg.to_address == recipient {
for coin in transfer_msg.amount {
deposits.push(Transfer {
sender: transfer_msg.from_address.clone(),
amount: coin.amount.clone(),
denom: coin.denom,
recipient: recipient.to_string(),
});
}
}
}
Ok(deposits)
}
// checks whether there are deposits that are greater then MAX_ALLOWED_TRANSFER.
fn check_deposits_size(deposits: &Vec<Transfer>) -> StdResult<()> {
for deposit in deposits {
match deposit.amount.parse::<u64>() {
Ok(amount) => {
if amount > MAX_ALLOWED_TRANSFER {
return Err(StdError::generic_err(format!(
"maximum allowed transfer is {}",
MAX_ALLOWED_TRANSFER
)));
};
}
Err(error) => {
return Err(StdError::generic_err(format!(
"failed to cast transfer amount to u64: {}",
error
)));
}
};
}
Ok(())
}
/// sudo_kv_query_result is the contract's callback for KV query results. Note that only the query
/// id is provided, so you need to read the query result from the state.
pub fn sudo_kv_query_result(
deps: DepsMut<NeutronQuery>,
_env: Env,
query_id: u64,
) -> NeutronResult<Response> {
deps.api.debug(
format!(
"WASMDEBUG: sudo_kv_query_result received; query_id: {:?}",
query_id,
)
.as_str(),
);
// TODO: provide an actual example. Currently to many things are going to change
// after @pro0n00gler's PRs to implement this.
Ok(Response::default())
}