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updater: fix static id hashes initialization (#10755) 

* updater: fix static id hashes initialization

* Update updater/src/updater.rs
This commit is contained in:
Andronik Ordian 2019-06-17 13:22:53 +02:00 committed by David
parent 20248c443b
commit 35c607f6be
1 changed files with 18 additions and 2 deletions
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20
updater/src/updater.rs
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@ -159,7 +159,7 @@ pub struct Updater<O = OperationsContractClient, F = fetch::Client, T = StdTimeP
const CLIENT_ID: &str = "parity";
lazy_static! {
static ref CLIENT_ID_HASH: H256 = H256::from_slice(CLIENT_ID.as_bytes());
static ref CLIENT_ID_HASH: H256 = h256_from_str_resizing(CLIENT_ID);
}
lazy_static! {
@ -177,7 +177,16 @@ lazy_static! {
}
lazy_static! {
static ref PLATFORM_ID_HASH: H256 = H256::from_slice(PLATFORM.as_bytes());
static ref PLATFORM_ID_HASH: H256 = h256_from_str_resizing(&PLATFORM);
}
// Pads the bytes with zeros or truncates the last bytes to H256::len_bytes()
// before the conversion to match the previous behavior.
fn h256_from_str_resizing(s: &str) -> H256 {
let mut bytes = s.as_bytes().to_vec();
bytes.resize(H256::len_bytes(), 0);
H256::from_slice(&bytes)
}
/// Client trait for getting latest release information from operations contract.
@ -1253,4 +1262,11 @@ pub mod tests {
// and since our update policy requires consensus, the client should be disabled
assert!(client.is_disabled());
}
#[test]
fn static_hashes_do_not_panic() {
let client_id_hash: H256 = *CLIENT_ID_HASH;
assert_eq!(&format!("{:x}", client_id_hash), "7061726974790000000000000000000000000000000000000000000000000000");
let _: H256 = *PLATFORM_ID_HASH;
}
}