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RustFmt the repo (sorry not sorry)

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This commit is contained in:
Hernando Castano
2020-02-02 22:13:28 -05:00
committed by Bastian Köcher
parent ffdb987a54
commit 987888e163
8 changed files with 440 additions and 419 deletions
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bridges/modules/ethereum/src/validators.rs
+77 -77
View File
@@ -14,15 +14,16 @@
// You should have received a copy of the GNU General Public License
// along with Parity-Bridge. If not, see <http://www.gnu.org/licenses/>.
use sp_std::prelude::*;
use primitives::{Address, H256, Header, LogEntry, Receipt, U256};
use crate::Storage;
use crate::error::Error;
use crate::Storage;
use primitives::{Address, Header, LogEntry, Receipt, H256, U256};
use sp_std::prelude::*;
/// The hash of InitiateChange event of the validators set contract.
const CHANGE_EVENT_HASH: &'static [u8; 32] = &[0x55, 0x25, 0x2f, 0xa6, 0xee, 0xe4, 0x74, 0x1b,
0x4e, 0x24, 0xa7, 0x4a, 0x70, 0xe9, 0xc1, 0x1f, 0xd2, 0xc2, 0x28, 0x1d, 0xf8, 0xd6, 0xea,
0x13, 0x12, 0x6f, 0xf8, 0x45, 0xf7, 0x82, 0x5c, 0x89];
const CHANGE_EVENT_HASH: &'static [u8; 32] = &[
0x55, 0x25, 0x2f, 0xa6, 0xee, 0xe4, 0x74, 0x1b, 0x4e, 0x24, 0xa7, 0x4a, 0x70, 0xe9, 0xc1, 0x1f, 0xd2, 0xc2, 0x28,
0x1d, 0xf8, 0xd6, 0xea, 0x13, 0x12, 0x6f, 0xf8, 0x45, 0xf7, 0x82, 0x5c, 0x89,
];
/// Where source of validators addresses come from. This covers the chain lifetime.
pub enum ValidatorsConfiguration {
@@ -76,12 +77,10 @@ impl<'a> Validators<'a> {
// that the contract has (probably) emitted epoch change event
let expected_bloom = LogEntry {
address: *contract_address,
topics: vec![
CHANGE_EVENT_HASH.into(),
header.parent_hash,
],
topics: vec![CHANGE_EVENT_HASH.into(), header.parent_hash],
data: Vec::new(), // irrelevant for bloom.
}.bloom();
}
.bloom();
header.log_bloom.contains(&expected_bloom)
}
@@ -120,12 +119,10 @@ impl<'a> Validators<'a> {
// that the contract has (probably) emitted epoch change event
let expected_bloom = LogEntry {
address: *contract_address,
topics: vec![
CHANGE_EVENT_HASH.into(),
header.parent_hash,
],
topics: vec![CHANGE_EVENT_HASH.into(), header.parent_hash],
data: Vec::new(), // irrelevant for bloom.
}.bloom();
}
.bloom();
if !header.log_bloom.contains(&expected_bloom) {
return Ok((None, None));
@@ -138,41 +135,47 @@ impl<'a> Validators<'a> {
// iterate in reverse because only the _last_ change in a given
// block actually has any effect
Ok((receipts.iter()
.rev()
.filter(|r| r.log_bloom.contains(&expected_bloom))
.flat_map(|r| r.logs.iter())
.filter(|l| l.address == *contract_address &&
l.topics.len() == 2 &&
l.topics[0].as_fixed_bytes() == CHANGE_EVENT_HASH &&
l.topics[1] == header.parent_hash
)
.filter_map(|l| {
let data_len = l.data.len();
if data_len < 64 {
return None;
}
Ok((
receipts
.iter()
.rev()
.filter(|r| r.log_bloom.contains(&expected_bloom))
.flat_map(|r| r.logs.iter())
.filter(|l| {
l.address == *contract_address
&& l.topics.len() == 2 && l.topics[0].as_fixed_bytes() == CHANGE_EVENT_HASH
&& l.topics[1] == header.parent_hash
})
.filter_map(|l| {
let data_len = l.data.len();
if data_len < 64 {
return None;
}
let new_validators_len_u256 = U256::from_big_endian(&l.data[32..64]);
let new_validators_len = new_validators_len_u256.low_u64();
if new_validators_len_u256 != new_validators_len.into() {
return None;
}
let new_validators_len_u256 = U256::from_big_endian(&l.data[32..64]);
let new_validators_len = new_validators_len_u256.low_u64();
if new_validators_len_u256 != new_validators_len.into() {
return None;
}
if (data_len - 64) as u64 != new_validators_len.saturating_mul(32) {
return None;
}
if (data_len - 64) as u64 != new_validators_len.saturating_mul(32) {
return None;
}
Some(l.data[64..]
.chunks(32)
.map(|chunk| {
let mut new_validator = Address::default();
new_validator.as_mut().copy_from_slice(&chunk[12..32]);
new_validator
})
.collect())
})
.next(), None))
Some(
l.data[64..]
.chunks(32)
.map(|chunk| {
let mut new_validator = Address::default();
new_validator.as_mut().copy_from_slice(&chunk[12..32]);
new_validator
})
.collect(),
)
})
.next(),
None,
))
}
/// Finalize changes when blocks are finalized.
@@ -193,12 +196,16 @@ impl<'a> Validators<'a> {
fn source_at<'b>(&'b self, header_number: u64) -> (usize, u64, &'b ValidatorsSource) {
match self.config {
ValidatorsConfiguration::Single(ref source) => (0, 0, source),
ValidatorsConfiguration::Multi(ref sources) => sources.iter().rev()
ValidatorsConfiguration::Multi(ref sources) => sources
.iter()
.rev()
.enumerate()
.find(|(_, &(begin, _))| begin < header_number)
.map(|(i, (begin, source))| (sources.len() - 1 - i, *begin, source))
.expect("there's always entry for the initial block;\
we do not touch any headers with number < initial block number; qed"),
.expect(
"there's always entry for the initial block;\
we do not touch any headers with number < initial block number; qed",
),
}
}
@@ -221,7 +228,7 @@ impl<'a> Validators<'a> {
let source = &sources[header_source_index];
(source.0, &source.1)
},
}
}
}
}
@@ -243,32 +250,24 @@ pub fn step_validator(header_validators: &[Address], header_step: u64) -> Addres
#[cfg(test)]
pub(crate) mod tests {
use primitives::TransactionOutcome;
use crate::kovan_validators_config;
use super::*;
use crate::kovan_validators_config;
use primitives::TransactionOutcome;
pub(crate) fn validators_change_recept(parent_hash: H256) -> Receipt {
Receipt {
gas_used: 0.into(),
log_bloom: (&[0xff; 256]).into(),
outcome: TransactionOutcome::Unknown,
logs: vec![
LogEntry {
address: [3; 20].into(),
topics: vec![
CHANGE_EVENT_HASH.into(),
parent_hash,
],
data: vec![
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
],
},
],
logs: vec![LogEntry {
address: [3; 20].into(),
topics: vec![CHANGE_EVENT_HASH.into(), parent_hash],
data: vec![
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
],
}],
}
}
@@ -347,10 +346,7 @@ pub(crate) mod tests {
// when we're inside list range
header.number = 150;
assert_eq!(
validators.extract_validators_change(&header, None),
Ok((None, None)),
);
assert_eq!(validators.extract_validators_change(&header, None), Ok((None, None)),);
// when we're at the block that switches to contract source
header.number = 200;
@@ -370,7 +366,9 @@ pub(crate) mod tests {
// when we're inside contract range and logs bloom signals change
// but there's no change in receipts
header.receipts_root = "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421".parse().unwrap();
header.receipts_root = "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421"
.parse()
.unwrap();
assert_eq!(
validators.extract_validators_change(&header, Some(Vec::new())),
Ok((None, None)),
@@ -379,7 +377,9 @@ pub(crate) mod tests {
// when we're inside contract range and logs bloom signals change
// and there's change in receipts
let receipts = vec![validators_change_recept(Default::default())];
header.receipts_root = "81ce88dc524403b796222046bf3daf543978329b87ffd50228f1d3987031dc45".parse().unwrap();
header.receipts_root = "81ce88dc524403b796222046bf3daf543978329b87ffd50228f1d3987031dc45"
.parse()
.unwrap();
assert_eq!(
validators.extract_validators_change(&header, Some(receipts)),
Ok((Some(vec![[7; 20].into()]), None)),