/
main.sw
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/
main.sw
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contract;
use std::address::Address;
use std::auth::{AuthError, msg_sender};
use std::block::timestamp;
use std::constants::ZERO_B256;
use std::identity::Identity;
use std::logging::log;
use std::result::Result;
use std::revert::require;
use std::hash::Hash;
abi Oracle {
fn owner() -> Identity;
#[storage(read, write)]
fn set_price(asset_id: b256, price_value: u64);
#[storage(read, write)]
fn set_prices(prices: Vec<(b256, u64)>);
#[storage(read)]
fn get_price(asset_id: b256) -> Price;
}
struct Price {
asset_id: b256,
price: u64,
last_update: u64,
}
configurable {
ADMIN: Address = Address::from(ZERO_B256),
}
storage {
prices: StorageMap<b256, Price> = StorageMap {},
}
pub fn get_msg_sender_address_or_panic() -> Address {
let sender: Result<Identity, AuthError> = msg_sender();
if let Identity::Address(address) = sender.unwrap() {
address
} else {
revert(0);
}
}
fn validate_owner() {
let sender = get_msg_sender_address_or_panic();
require(ADMIN == sender, "Access denied");
}
impl Oracle for Contract {
fn owner() -> Identity {
Identity::Address(ADMIN)
}
#[storage(read, write)]
fn set_price(asset_id: b256, price: u64) {
validate_owner();
storage.prices.insert(asset_id, Price {
price,
asset_id,
last_update: timestamp(),
});
}
#[storage(read, write)]
fn set_prices(prices: Vec<(b256, u64)>) {
validate_owner();
let mut i = 0;
while i < prices.len() {
let (asset_id, price) = prices.get(i).unwrap();
storage.prices.insert(asset_id, Price {
price,
asset_id,
last_update: timestamp(),
});
i += 1;
}
}
#[storage(read)]
fn get_price(asset_id: b256) -> Price {
storage.prices.get(asset_id).read()
}
}