1258 lines
46 KiB
Rust
1258 lines
46 KiB
Rust
// Ensure we're `no_std` when compiling for Wasm.
|
|
#![cfg_attr(not(feature = "std"), no_std)]
|
|
|
|
use codec::{Decode, Encode, MaxEncodedLen};
|
|
use scale_info::TypeInfo;
|
|
use serde::{Deserialize, Deserializer};
|
|
|
|
use frame_support::{
|
|
pallet_prelude::*,
|
|
traits::{
|
|
tokens::fungible::{Inspect, Mutate},
|
|
EstimateNextSessionRotation, Get, OneSessionHandler, ValidatorSet,
|
|
ValidatorSetWithIdentification,
|
|
},
|
|
WeakBoundedVec,
|
|
};
|
|
use frame_system::{
|
|
offchain::{SendTransactionTypes, SubmitTransaction},
|
|
pallet_prelude::*,
|
|
};
|
|
pub use pallet::*;
|
|
|
|
use sp_core::H256;
|
|
use sp_runtime::{
|
|
offchain::{
|
|
self as rt_offchain,
|
|
storage::{MutateStorageError, StorageRetrievalError, StorageValueRef},
|
|
storage_lock::{StorageLock, Time},
|
|
HttpError,
|
|
},
|
|
traits::{BlockNumberProvider, Convert, Saturating},
|
|
Perbill, RuntimeAppPublic, RuntimeDebug, SaturatedConversion,
|
|
};
|
|
use sp_staking::{
|
|
offence::{Kind, Offence, ReportOffence},
|
|
SessionIndex,
|
|
};
|
|
use sp_std::{collections::btree_map::BTreeMap, prelude::*, vec::Vec};
|
|
|
|
use ghost_networks::{
|
|
NetworkData, NetworkDataBasicHandler, NetworkDataInspectHandler, NetworkDataMutateHandler,
|
|
NetworkType,
|
|
};
|
|
|
|
pub mod weights;
|
|
pub use crate::weights::WeightInfo;
|
|
mod benchmarking;
|
|
mod mock;
|
|
mod tests;
|
|
|
|
pub mod sr25519 {
|
|
mod app_sr25519 {
|
|
use sp_application_crypto::{app_crypto, sr25519, KeyTypeId};
|
|
const SLOW_CLAP: KeyTypeId = KeyTypeId(*b"slow");
|
|
app_crypto!(sr25519, SLOW_CLAP);
|
|
}
|
|
|
|
sp_application_crypto::with_pair! {
|
|
pub type AuthorityPair = app_sr25519::Pair;
|
|
}
|
|
|
|
pub type AuthoritySignature = app_sr25519::Signature;
|
|
pub type AuthorityId = app_sr25519::Public;
|
|
}
|
|
|
|
const LOG_TARGET: &str = "runtime::ghost-slow-clap";
|
|
const DB_PREFIX: &[u8] = b"slow_clap::";
|
|
|
|
const FETCH_TIMEOUT_PERIOD: u64 = 3_000;
|
|
const LOCK_BLOCK_EXPIRATION: u64 = 10;
|
|
const NUMBER_OF_TOPICS: usize = 3;
|
|
|
|
pub type AuthIndex = u32;
|
|
|
|
#[derive(RuntimeDebug, Clone, PartialEq, Deserialize, Encode, Decode)]
|
|
struct EvmResponse {
|
|
#[serde(default)]
|
|
id: Option<u32>,
|
|
#[serde(default, deserialize_with = "de_string_to_bytes")]
|
|
jsonrpc: Option<Vec<u8>>,
|
|
#[serde(default, deserialize_with = "de_string_to_bytes")]
|
|
error: Option<Vec<u8>>,
|
|
#[serde(default)]
|
|
result: Option<EvmResponseType>,
|
|
}
|
|
|
|
#[derive(RuntimeDebug, Clone, PartialEq, Deserialize, Encode, Decode)]
|
|
#[serde(untagged)]
|
|
enum EvmResponseType {
|
|
#[serde(deserialize_with = "de_string_to_u64_pure")]
|
|
BlockNumber(u64),
|
|
TransactionLogs(Vec<Log>),
|
|
}
|
|
|
|
#[derive(RuntimeDebug, Clone, Eq, PartialEq, Ord, PartialOrd, Deserialize, Encode, Decode)]
|
|
#[serde(rename_all = "camelCase")]
|
|
struct Log {
|
|
#[serde(default, deserialize_with = "de_string_to_h256")]
|
|
transaction_hash: Option<H256>,
|
|
#[serde(default, deserialize_with = "de_string_to_u64")]
|
|
block_number: Option<u64>,
|
|
#[serde(default, deserialize_with = "de_string_to_vec_of_bytes")]
|
|
topics: Vec<Vec<u8>>,
|
|
#[serde(default, deserialize_with = "de_string_to_bytes")]
|
|
address: Option<Vec<u8>>,
|
|
#[serde(default, deserialize_with = "de_string_to_btree_map")]
|
|
data: BTreeMap<u128, u128>,
|
|
removed: bool,
|
|
}
|
|
|
|
impl Log {
|
|
fn is_sufficient(&self) -> bool {
|
|
self.transaction_hash.is_some()
|
|
&& self.block_number.is_some()
|
|
&& self.topics.len() == NUMBER_OF_TOPICS
|
|
}
|
|
}
|
|
|
|
pub fn de_string_to_bytes<'de, D>(de: D) -> Result<Option<Vec<u8>>, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s: &str = Deserialize::deserialize(de)?;
|
|
Ok(Some(s.as_bytes().to_vec()))
|
|
}
|
|
|
|
pub fn de_string_to_u64<'de, D>(de: D) -> Result<Option<u64>, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s: &str = Deserialize::deserialize(de)?;
|
|
let s = if s.starts_with("0x") { &s[2..] } else { &s };
|
|
Ok(u64::from_str_radix(s, 16).ok())
|
|
}
|
|
|
|
pub fn de_string_to_u64_pure<'de, D>(de: D) -> Result<u64, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s: &str = Deserialize::deserialize(de)?;
|
|
let s = if s.starts_with("0x") { &s[2..] } else { &s };
|
|
Ok(u64::from_str_radix(s, 16).unwrap_or_default())
|
|
}
|
|
|
|
pub fn de_string_to_h256<'de, D>(de: D) -> Result<Option<H256>, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s: &str = Deserialize::deserialize(de)?;
|
|
let start_index = if s.starts_with("0x") { 2 } else { 0 };
|
|
let h256: Vec<_> = (start_index..s.len())
|
|
.step_by(2)
|
|
.map(|i| u8::from_str_radix(&s[i..i + 2], 16).expect("valid u8 symbol; qed"))
|
|
.collect();
|
|
Ok(Some(H256::from_slice(&h256)))
|
|
}
|
|
|
|
pub fn de_string_to_vec_of_bytes<'de, D>(de: D) -> Result<Vec<Vec<u8>>, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let strings: Vec<&str> = Deserialize::deserialize(de)?;
|
|
Ok(strings
|
|
.iter()
|
|
.map(|s| {
|
|
let start_index = if s.starts_with("0x") { 2 } else { 0 };
|
|
(start_index..s.len())
|
|
.step_by(2)
|
|
.map(|i| u8::from_str_radix(&s[i..i + 2], 16).expect("valid u8 symbol; qed"))
|
|
.collect::<Vec<u8>>()
|
|
})
|
|
.collect::<Vec<Vec<u8>>>())
|
|
}
|
|
|
|
pub fn de_string_to_btree_map<'de, D>(de: D) -> Result<BTreeMap<u128, u128>, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s: &str = Deserialize::deserialize(de)?;
|
|
let start_index = if s.starts_with("0x") { 2 } else { 0 };
|
|
Ok(BTreeMap::from_iter((start_index..s.len()).step_by(64).map(
|
|
|i| {
|
|
(
|
|
u128::from_str_radix(&s[i..i + 32], 16).expect("valid u8 symbol; qed"),
|
|
u128::from_str_radix(&s[i + 32..i + 64], 16).expect("valid u8 symbol; qed"),
|
|
)
|
|
},
|
|
)))
|
|
}
|
|
|
|
#[derive(
|
|
RuntimeDebug, Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, TypeInfo, MaxEncodedLen,
|
|
)]
|
|
pub struct Clap<AccountId, NetworkId, Balance> {
|
|
pub session_index: SessionIndex,
|
|
pub authority_index: AuthIndex,
|
|
pub transaction_hash: H256,
|
|
pub block_number: u64,
|
|
pub removed: bool,
|
|
pub network_id: NetworkId,
|
|
pub receiver: AccountId,
|
|
pub amount: Balance,
|
|
}
|
|
|
|
#[derive(Default, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
|
|
pub struct SessionAuthorityInfo {
|
|
pub claps: u32,
|
|
pub disabled: bool,
|
|
}
|
|
|
|
#[cfg_attr(test, derive(PartialEq))]
|
|
enum OffchainErr<NetworkId> {
|
|
FailedSigning,
|
|
SubmitTransaction,
|
|
HttpJsonParsingError,
|
|
HttpBytesParsingError,
|
|
HttpRequestError(HttpError),
|
|
RequestUncompleted,
|
|
HttpResponseNotOk(u16),
|
|
ErrorInEvmResponse,
|
|
NoStoredNetworks,
|
|
NotValidator,
|
|
StorageRetrievalError(NetworkId),
|
|
ConcurrentModificationError(NetworkId),
|
|
UtxoNotImplemented(NetworkId),
|
|
UnknownNetworkType(NetworkId),
|
|
OffchainTimeoutPeriod(NetworkId),
|
|
TooManyRequests(NetworkId),
|
|
}
|
|
|
|
impl<NetworkId: core::fmt::Debug> core::fmt::Debug for OffchainErr<NetworkId> {
|
|
fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::fmt::Result {
|
|
match *self {
|
|
OffchainErr::FailedSigning => write!(fmt, "Failed to sign clap."),
|
|
OffchainErr::SubmitTransaction => write!(fmt, "Failed to submit transaction."),
|
|
OffchainErr::HttpJsonParsingError => write!(fmt, "Failed to parse evm response as JSON."),
|
|
OffchainErr::HttpBytesParsingError => write!(fmt, "Failed to parse evm response as bytes."),
|
|
OffchainErr::HttpRequestError(http_error) => match http_error {
|
|
HttpError::DeadlineReached => write!(fmt, "Requested action couldn't been completed within a deadline."),
|
|
HttpError::IoError => write!(fmt, "There was an IO error while processing the request."),
|
|
HttpError::Invalid => write!(fmt, "The ID of the request is invalid in this context."),
|
|
},
|
|
OffchainErr::ConcurrentModificationError(ref network_id) => write!(fmt, "The underlying DB failed to update due to a concurrent modification for network #{:?}.", network_id),
|
|
OffchainErr::StorageRetrievalError(ref network_id) => write!(fmt, "Storage value found for network #{:?} but it's undecodable.", network_id),
|
|
OffchainErr::RequestUncompleted => write!(fmt, "Failed to complete request."),
|
|
OffchainErr::HttpResponseNotOk(code) => write!(fmt, "Http response returned code {:?}.", code),
|
|
OffchainErr::ErrorInEvmResponse => write!(fmt, "Error in evm reponse."),
|
|
OffchainErr::NoStoredNetworks => write!(fmt, "No networks stored for the offchain slow claps."),
|
|
OffchainErr::NotValidator => write!(fmt, "Not a validator for slow clap, `--validator` flag needed."),
|
|
OffchainErr::UtxoNotImplemented(ref network_id) => write!(fmt, "Network #{:?} is marked as UTXO, which is not implemented yet.", network_id),
|
|
OffchainErr::UnknownNetworkType(ref network_id) => write!(fmt, "Unknown type for network #{:?}.", network_id),
|
|
OffchainErr::OffchainTimeoutPeriod(ref network_id) => write!(fmt, "Offchain request should be in-flight for network #{:?}.", network_id),
|
|
OffchainErr::TooManyRequests(ref network_id) => write!(fmt, "Too many requests over RPC endpoint for network #{:?}.", network_id),
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
pub type NetworkIdOf<T> = <<T as Config>::NetworkDataHandler as NetworkDataBasicHandler>::NetworkId;
|
|
|
|
pub type BalanceOf<T> =
|
|
<<T as Config>::Currency as Inspect<<T as frame_system::Config>::AccountId>>::Balance;
|
|
|
|
pub type ValidatorId<T> = <<T as Config>::ValidatorSet as ValidatorSet<
|
|
<T as frame_system::Config>::AccountId,
|
|
>>::ValidatorId;
|
|
|
|
pub type IdentificationTuple<T> = (
|
|
ValidatorId<T>,
|
|
<<T as Config>::ValidatorSet as ValidatorSetWithIdentification<
|
|
<T as frame_system::Config>::AccountId,
|
|
>>::Identification,
|
|
);
|
|
|
|
type OffchainResult<T, A> = Result<A, OffchainErr<NetworkIdOf<T>>>;
|
|
|
|
#[frame_support::pallet]
|
|
pub mod pallet {
|
|
use super::*;
|
|
|
|
const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
|
|
|
|
#[pallet::pallet]
|
|
#[pallet::storage_version(STORAGE_VERSION)]
|
|
#[pallet::without_storage_info]
|
|
pub struct Pallet<T>(_);
|
|
|
|
#[pallet::config]
|
|
pub trait Config: SendTransactionTypes<Call<Self>> + frame_system::Config {
|
|
type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
|
|
type AuthorityId: Member
|
|
+ Parameter
|
|
+ RuntimeAppPublic
|
|
+ Ord
|
|
+ MaybeSerializeDeserialize
|
|
+ MaxEncodedLen;
|
|
|
|
type NextSessionRotation: EstimateNextSessionRotation<BlockNumberFor<Self>>;
|
|
type ValidatorSet: ValidatorSetWithIdentification<Self::AccountId>;
|
|
type Currency: Inspect<Self::AccountId> + Mutate<Self::AccountId>;
|
|
type NetworkDataHandler: NetworkDataBasicHandler
|
|
+ NetworkDataInspectHandler<NetworkData>
|
|
+ NetworkDataMutateHandler<NetworkData, BalanceOf<Self>>;
|
|
type BlockNumberProvider: BlockNumberProvider<BlockNumber = BlockNumberFor<Self>>;
|
|
type ReportUnresponsiveness: ReportOffence<
|
|
Self::AccountId,
|
|
IdentificationTuple<Self>,
|
|
ThrottlingOffence<IdentificationTuple<Self>>,
|
|
>;
|
|
|
|
#[pallet::constant]
|
|
type MaxAuthorities: Get<u32>;
|
|
|
|
#[pallet::constant]
|
|
type ApplauseThreshold: Get<u32>;
|
|
|
|
#[pallet::constant]
|
|
type OffenceThreshold: Get<u32>;
|
|
|
|
#[pallet::constant]
|
|
type UnsignedPriority: Get<TransactionPriority>;
|
|
|
|
#[pallet::constant]
|
|
type HistoryDepth: Get<SessionIndex>;
|
|
|
|
type WeightInfo: WeightInfo;
|
|
}
|
|
|
|
#[pallet::event]
|
|
#[pallet::generate_deposit(pub(super) fn deposit_event)]
|
|
pub enum Event<T: Config> {
|
|
AuthoritiesEquilibrium,
|
|
SomeAuthoritiesTrottling {
|
|
throttling: Vec<IdentificationTuple<T>>,
|
|
},
|
|
Clapped {
|
|
authority_id: AuthIndex,
|
|
network_id: NetworkIdOf<T>,
|
|
transaction_hash: H256,
|
|
receiver: T::AccountId,
|
|
amount: BalanceOf<T>,
|
|
},
|
|
Applaused {
|
|
network_id: NetworkIdOf<T>,
|
|
receiver: T::AccountId,
|
|
received_amount: BalanceOf<T>,
|
|
},
|
|
}
|
|
|
|
#[pallet::error]
|
|
pub enum Error<T> {
|
|
NotEnoughClaps,
|
|
NotAnAuthority,
|
|
CurrentValidatorIsDisabled,
|
|
AlreadyClapped,
|
|
UnregisteredClapRemove,
|
|
TooMuchAuthorities,
|
|
CouldNotAccumulateCommission,
|
|
CouldNotAccumulateIncomingImbalance,
|
|
CouldNotIncreaseGatekeeperAmount,
|
|
}
|
|
|
|
#[pallet::storage]
|
|
#[pallet::getter(fn received_claps)]
|
|
pub(super) type ReceivedClaps<T: Config> = StorageNMap<
|
|
_,
|
|
(
|
|
NMapKey<Twox64Concat, SessionIndex>,
|
|
NMapKey<Twox64Concat, H256>,
|
|
NMapKey<Twox64Concat, H256>,
|
|
),
|
|
BoundedBTreeSet<AuthIndex, T::MaxAuthorities>,
|
|
ValueQuery,
|
|
>;
|
|
|
|
#[pallet::storage]
|
|
#[pallet::getter(fn applauses_for_transaction)]
|
|
pub(super) type ApplausesForTransaction<T: Config> = StorageNMap<
|
|
_,
|
|
(
|
|
NMapKey<Twox64Concat, SessionIndex>,
|
|
NMapKey<Twox64Concat, H256>,
|
|
NMapKey<Twox64Concat, H256>,
|
|
),
|
|
bool,
|
|
ValueQuery,
|
|
>;
|
|
|
|
#[pallet::storage]
|
|
#[pallet::getter(fn claps_in_session)]
|
|
pub(super) type ClapsInSession<T: Config> = StorageMap<
|
|
_,
|
|
Twox64Concat,
|
|
SessionIndex,
|
|
BTreeMap<AuthIndex, SessionAuthorityInfo>,
|
|
ValueQuery,
|
|
>;
|
|
|
|
#[pallet::storage]
|
|
#[pallet::getter(fn authorities)]
|
|
pub(super) type Authorities<T: Config> = StorageMap<
|
|
_,
|
|
Twox64Concat,
|
|
SessionIndex,
|
|
WeakBoundedVec<T::AuthorityId, T::MaxAuthorities>,
|
|
ValueQuery,
|
|
>;
|
|
|
|
#[pallet::genesis_config]
|
|
#[derive(frame_support::DefaultNoBound)]
|
|
pub struct GenesisConfig<T: Config> {
|
|
pub authorities: Vec<T::AuthorityId>,
|
|
}
|
|
|
|
#[pallet::genesis_build]
|
|
impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
|
|
fn build(&self) {
|
|
if !self.authorities.is_empty() {
|
|
Pallet::<T>::initialize_authorities(self.authorities.clone());
|
|
}
|
|
}
|
|
}
|
|
|
|
#[pallet::call]
|
|
impl<T: Config> Pallet<T> {
|
|
#[pallet::call_index(0)]
|
|
#[pallet::weight((T::WeightInfo::slow_clap(), DispatchClass::Normal, Pays::No))]
|
|
pub fn slow_clap(
|
|
origin: OriginFor<T>,
|
|
clap: Clap<T::AccountId, NetworkIdOf<T>, BalanceOf<T>>,
|
|
// since signature verification is done in `validate_unsigned`
|
|
// we can skip doing it here again.
|
|
_signature: <T::AuthorityId as RuntimeAppPublic>::Signature,
|
|
) -> DispatchResult {
|
|
ensure_none(origin)?;
|
|
Self::try_slow_clap(&clap)?;
|
|
Ok(())
|
|
}
|
|
|
|
#[pallet::call_index(1)]
|
|
#[pallet::weight(T::WeightInfo::self_applause())]
|
|
pub fn self_applause(
|
|
origin: OriginFor<T>,
|
|
network_id: NetworkIdOf<T>,
|
|
session_index: SessionIndex,
|
|
transaction_hash: H256,
|
|
receiver: T::AccountId,
|
|
amount: BalanceOf<T>,
|
|
) -> DispatchResult {
|
|
let _ = ensure_signed(origin)?;
|
|
Self::applause_if_posible(
|
|
network_id,
|
|
session_index,
|
|
transaction_hash,
|
|
receiver,
|
|
amount,
|
|
)
|
|
}
|
|
}
|
|
|
|
#[pallet::hooks]
|
|
impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
|
|
fn offchain_worker(now: BlockNumberFor<T>) {
|
|
match Self::start_slow_clapping(now) {
|
|
Ok(iter) => {
|
|
for result in iter.into_iter() {
|
|
if let Err(e) = result {
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"👏 Skipping slow clap at {:?}: {:?}",
|
|
now,
|
|
e,
|
|
)
|
|
}
|
|
}
|
|
}
|
|
Err(e) => log::info!(
|
|
target: LOG_TARGET,
|
|
"👏 Could not start slow clap at {:?}: {:?}",
|
|
now,
|
|
e,
|
|
),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[pallet::validate_unsigned]
|
|
impl<T: Config> ValidateUnsigned for Pallet<T> {
|
|
type Call = Call<T>;
|
|
|
|
fn validate_unsigned(_source: TransactionSource, call: &Self::Call) -> TransactionValidity {
|
|
if let Call::slow_clap { clap, signature } = call {
|
|
let authorities = Authorities::<T>::get(&clap.session_index);
|
|
let authority = match authorities.get(clap.authority_index as usize) {
|
|
Some(authority) => authority,
|
|
None => return InvalidTransaction::BadSigner.into(),
|
|
};
|
|
|
|
let signature_valid =
|
|
clap.using_encoded(|encoded_clap| authority.verify(&encoded_clap, signature));
|
|
|
|
if !signature_valid {
|
|
return InvalidTransaction::BadProof.into();
|
|
}
|
|
|
|
ValidTransaction::with_tag_prefix("SlowClap")
|
|
.priority(T::UnsignedPriority::get())
|
|
.and_provides(signature)
|
|
.longevity(LOCK_BLOCK_EXPIRATION)
|
|
.propagate(true)
|
|
.build()
|
|
} else {
|
|
InvalidTransaction::Call.into()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<T: Config> Pallet<T> {
|
|
fn create_storage_key(first: &[u8], second: &[u8]) -> Vec<u8> {
|
|
let mut key = DB_PREFIX.to_vec();
|
|
key.extend(first);
|
|
key.extend(second);
|
|
key
|
|
}
|
|
|
|
fn read_persistent_offchain_storage<R: codec::Decode>(
|
|
storage_key: &[u8],
|
|
default_value: R,
|
|
) -> R {
|
|
StorageValueRef::persistent(&storage_key)
|
|
.get::<R>()
|
|
.ok()
|
|
.flatten()
|
|
.unwrap_or(default_value)
|
|
}
|
|
|
|
fn generate_unique_hash(
|
|
receiver: &T::AccountId,
|
|
amount: &BalanceOf<T>,
|
|
network_id: &NetworkIdOf<T>,
|
|
) -> H256 {
|
|
let mut clap_args_str = receiver.encode();
|
|
clap_args_str.extend(&amount.encode());
|
|
clap_args_str.extend(&network_id.encode());
|
|
|
|
H256::from_slice(&sp_io::hashing::keccak_256(&clap_args_str)[..])
|
|
}
|
|
|
|
fn u64_to_hexadecimal_bytes(value: u64) -> Vec<u8> {
|
|
let mut hex_str = Vec::new();
|
|
hex_str.push(b'0');
|
|
hex_str.push(b'x');
|
|
|
|
if value == 0 {
|
|
hex_str.push(b'0');
|
|
return hex_str;
|
|
}
|
|
|
|
for i in (0..16).rev() {
|
|
let nibble = (value >> (i * 4)) & 0xF;
|
|
if nibble != 0 || hex_str.len() > 2 {
|
|
hex_str.push(match nibble {
|
|
0..=9 => b'0' + nibble as u8,
|
|
10..=15 => b'a' + (nibble - 10) as u8,
|
|
_ => unreachable!(),
|
|
});
|
|
}
|
|
}
|
|
|
|
hex_str
|
|
}
|
|
|
|
fn try_slow_clap(clap: &Clap<T::AccountId, NetworkIdOf<T>, BalanceOf<T>>) -> DispatchResult {
|
|
let authorities = Authorities::<T>::get(&clap.session_index);
|
|
ensure!(
|
|
authorities.get(clap.authority_index as usize).is_some(),
|
|
Error::<T>::NotAnAuthority
|
|
);
|
|
|
|
let clap_unique_hash =
|
|
Self::generate_unique_hash(&clap.receiver, &clap.amount, &clap.network_id);
|
|
let received_claps_key = (
|
|
clap.session_index,
|
|
&clap.transaction_hash,
|
|
&clap_unique_hash,
|
|
);
|
|
|
|
let number_of_received_claps =
|
|
ReceivedClaps::<T>::try_mutate(&received_claps_key, |tree_of_claps| {
|
|
let number_of_claps = tree_of_claps.len();
|
|
match (tree_of_claps.contains(&clap.authority_index), clap.removed) {
|
|
(true, true) => tree_of_claps
|
|
.remove(&clap.authority_index)
|
|
.then(|| number_of_claps.saturating_sub(1))
|
|
.ok_or(Error::<T>::UnregisteredClapRemove),
|
|
(true, false) => Err(Error::<T>::AlreadyClapped),
|
|
(false, true) => Err(Error::<T>::UnregisteredClapRemove),
|
|
(false, false) => tree_of_claps
|
|
.try_insert(clap.authority_index)
|
|
.map(|_| number_of_claps.saturating_add(1))
|
|
.map_err(|_| Error::<T>::TooMuchAuthorities),
|
|
}
|
|
})?;
|
|
|
|
ClapsInSession::<T>::try_mutate(&clap.session_index, |claps_details| {
|
|
if claps_details
|
|
.get(&clap.authority_index)
|
|
.map(|x| x.disabled)
|
|
.unwrap_or_default()
|
|
{
|
|
return Err(Error::<T>::CurrentValidatorIsDisabled);
|
|
}
|
|
|
|
(*claps_details)
|
|
.entry(clap.authority_index)
|
|
.and_modify(|individual| (*individual).claps.saturating_inc())
|
|
.or_insert(SessionAuthorityInfo {
|
|
claps: 1u32,
|
|
disabled: false,
|
|
});
|
|
|
|
Ok(())
|
|
})?;
|
|
|
|
Self::deposit_event(Event::<T>::Clapped {
|
|
authority_id: clap.authority_index,
|
|
network_id: clap.network_id,
|
|
transaction_hash: clap.transaction_hash,
|
|
receiver: clap.receiver.clone(),
|
|
amount: clap.amount,
|
|
});
|
|
|
|
let enough_authorities =
|
|
Perbill::from_rational(number_of_received_claps as u32, authorities.len() as u32)
|
|
> Perbill::from_percent(T::ApplauseThreshold::get());
|
|
|
|
if enough_authorities {
|
|
let _ = Self::try_applause(&clap, &received_claps_key).inspect_err(|error_msg| {
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"👏 Could not applause because of: {:?}",
|
|
error_msg,
|
|
)
|
|
});
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn try_applause(
|
|
clap: &Clap<T::AccountId, NetworkIdOf<T>, BalanceOf<T>>,
|
|
received_claps_key: &(SessionIndex, &H256, &H256),
|
|
) -> DispatchResult {
|
|
ApplausesForTransaction::<T>::try_mutate(received_claps_key, |is_applaused| {
|
|
if *is_applaused || T::NetworkDataHandler::is_nullification_period() {
|
|
return Ok(());
|
|
}
|
|
|
|
let commission = T::NetworkDataHandler::get(&clap.network_id)
|
|
.map(|network_data| Perbill::from_parts(network_data.incoming_fee))
|
|
.unwrap_or_default()
|
|
.mul_ceil(clap.amount);
|
|
let final_amount = clap.amount.saturating_sub(commission);
|
|
|
|
let _ =
|
|
T::NetworkDataHandler::increase_gatekeeper_amount(&clap.network_id, &clap.amount)
|
|
.map_err(|_| Error::<T>::CouldNotIncreaseGatekeeperAmount)?;
|
|
let _ = T::NetworkDataHandler::accumulate_incoming_imbalance(&final_amount)
|
|
.map_err(|_| Error::<T>::CouldNotAccumulateIncomingImbalance)?;
|
|
let _ = T::NetworkDataHandler::accumulate_commission(&commission)
|
|
.map_err(|_| Error::<T>::CouldNotAccumulateCommission)?;
|
|
|
|
if final_amount > T::Currency::minimum_balance() {
|
|
T::Currency::mint_into(&clap.receiver, final_amount)?;
|
|
}
|
|
|
|
*is_applaused = true;
|
|
|
|
Self::deposit_event(Event::<T>::Applaused {
|
|
network_id: clap.network_id,
|
|
receiver: clap.receiver.clone(),
|
|
received_amount: final_amount,
|
|
});
|
|
|
|
Ok(())
|
|
})
|
|
}
|
|
|
|
fn applause_if_posible(
|
|
network_id: NetworkIdOf<T>,
|
|
session_index: SessionIndex,
|
|
transaction_hash: H256,
|
|
receiver: T::AccountId,
|
|
amount: BalanceOf<T>,
|
|
) -> DispatchResult {
|
|
let clap_unique_hash = Self::generate_unique_hash(&receiver, &amount, &network_id);
|
|
let received_claps_key = (session_index, &transaction_hash, &clap_unique_hash);
|
|
|
|
let clap = Clap {
|
|
authority_index: Default::default(),
|
|
block_number: Default::default(),
|
|
removed: false,
|
|
session_index,
|
|
network_id,
|
|
receiver,
|
|
amount,
|
|
transaction_hash,
|
|
};
|
|
|
|
let enough_authorities = Perbill::from_rational(
|
|
ReceivedClaps::<T>::get(&received_claps_key).len() as u32,
|
|
Authorities::<T>::get(session_index).len() as u32,
|
|
) > Perbill::from_percent(T::ApplauseThreshold::get());
|
|
|
|
ensure!(enough_authorities, Error::<T>::NotEnoughClaps);
|
|
Self::try_applause(&clap, &received_claps_key)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn start_slow_clapping(
|
|
block_number: BlockNumberFor<T>,
|
|
) -> OffchainResult<T, impl Iterator<Item = OffchainResult<T, ()>>> {
|
|
sp_io::offchain::is_validator()
|
|
.then(|| ())
|
|
.ok_or(OffchainErr::NotValidator)?;
|
|
|
|
let session_index = T::ValidatorSet::session_index();
|
|
let networks_len = T::NetworkDataHandler::iter().count();
|
|
let network_in_use = T::NetworkDataHandler::iter()
|
|
.nth(
|
|
block_number
|
|
.into()
|
|
.as_usize()
|
|
.checked_rem(networks_len)
|
|
.unwrap_or_default(),
|
|
)
|
|
.ok_or(OffchainErr::NoStoredNetworks)?;
|
|
|
|
let network_id_encoded = network_in_use.0.encode();
|
|
|
|
let last_timestamp_key = Self::create_storage_key(b"last-timestamp-", &network_id_encoded);
|
|
let rate_limit_delay_key = Self::create_storage_key(b"rate-limit-", &network_id_encoded);
|
|
let rate_limit_delay = Self::read_persistent_offchain_storage(
|
|
&rate_limit_delay_key,
|
|
network_in_use.1.rate_limit_delay,
|
|
);
|
|
|
|
let network_lock_key = Self::create_storage_key(b"network-lock-", &network_id_encoded);
|
|
let block_until =
|
|
rt_offchain::Duration::from_millis(networks_len as u64 * FETCH_TIMEOUT_PERIOD);
|
|
let mut network_lock = StorageLock::<Time>::with_deadline(&network_lock_key, block_until);
|
|
|
|
network_lock
|
|
.try_lock()
|
|
.map_err(|_| OffchainErr::OffchainTimeoutPeriod(network_in_use.0))?;
|
|
|
|
StorageValueRef::persistent(&last_timestamp_key)
|
|
.mutate(
|
|
|result_timestamp: Result<Option<u64>, StorageRetrievalError>| {
|
|
let current_timestmap = sp_io::offchain::timestamp().unix_millis();
|
|
match result_timestamp {
|
|
Ok(option_timestamp) => match option_timestamp {
|
|
Some(stored_timestamp) if stored_timestamp > current_timestmap => {
|
|
Err(OffchainErr::TooManyRequests(network_in_use.0).into())
|
|
}
|
|
_ => Ok(current_timestmap.saturating_add(rate_limit_delay)),
|
|
},
|
|
Err(_) => Err(OffchainErr::StorageRetrievalError(network_in_use.0).into()),
|
|
}
|
|
},
|
|
)
|
|
.map_err(|error| match error {
|
|
MutateStorageError::ValueFunctionFailed(offchain_error) => offchain_error,
|
|
MutateStorageError::ConcurrentModification(_) => {
|
|
OffchainErr::ConcurrentModificationError(network_in_use.0).into()
|
|
}
|
|
})?;
|
|
|
|
Ok(
|
|
Self::local_authorities(&session_index).map(move |(authority_index, authority_key)| {
|
|
Self::do_evm_claps_or_save_block(
|
|
authority_index,
|
|
authority_key,
|
|
session_index,
|
|
network_in_use.0,
|
|
&network_in_use.1,
|
|
)
|
|
}),
|
|
)
|
|
}
|
|
|
|
fn do_evm_claps_or_save_block(
|
|
authority_index: AuthIndex,
|
|
authority_key: T::AuthorityId,
|
|
session_index: SessionIndex,
|
|
network_id: NetworkIdOf<T>,
|
|
network_data: &NetworkData,
|
|
) -> OffchainResult<T, ()> {
|
|
let network_id_encoded = network_id.encode();
|
|
|
|
let block_number_key = Self::create_storage_key(b"block-", &network_id_encoded);
|
|
let block_distance_key = Self::create_storage_key(b"block-distance-", &network_id_encoded);
|
|
let endpoint_key = Self::create_storage_key(b"endpoint-", &network_id_encoded);
|
|
|
|
let rpc_endpoint = Self::read_persistent_offchain_storage(
|
|
&endpoint_key,
|
|
network_data.default_endpoint.clone(),
|
|
);
|
|
let max_block_distance = Self::read_persistent_offchain_storage(
|
|
&block_distance_key,
|
|
network_data.block_distance,
|
|
);
|
|
|
|
StorageValueRef::persistent(&block_number_key)
|
|
.mutate(
|
|
|result_block_range: Result<Option<(u64, u64)>, StorageRetrievalError>| {
|
|
match result_block_range {
|
|
Ok(maybe_block_range) => {
|
|
let request_body = match maybe_block_range {
|
|
Some((from_block, to_block))
|
|
if from_block < to_block.saturating_sub(1) =>
|
|
{
|
|
Self::prepare_request_body_for_latest_transfers(
|
|
from_block,
|
|
to_block.saturating_sub(1),
|
|
network_data,
|
|
)
|
|
}
|
|
_ => Self::prepare_request_body_for_latest_block(network_data),
|
|
};
|
|
|
|
let response_bytes =
|
|
Self::fetch_from_remote(&rpc_endpoint, &request_body)?;
|
|
|
|
match network_data.network_type {
|
|
NetworkType::Evm => {
|
|
let maybe_new_evm_block = Self::apply_evm_response(
|
|
&response_bytes,
|
|
authority_index,
|
|
authority_key,
|
|
session_index,
|
|
network_id,
|
|
)?;
|
|
|
|
let estimated_block = maybe_new_evm_block
|
|
.map(|new_evm_block| {
|
|
new_evm_block
|
|
.saturating_sub(network_data.finality_delay)
|
|
})
|
|
.unwrap_or_default();
|
|
|
|
Ok(match maybe_block_range {
|
|
Some((from_block, to_block)) => match maybe_new_evm_block {
|
|
Some(_) => {
|
|
match estimated_block.checked_sub(from_block) {
|
|
Some(current_distance)
|
|
if current_distance
|
|
< max_block_distance =>
|
|
{
|
|
(from_block, estimated_block)
|
|
}
|
|
_ => (
|
|
from_block,
|
|
from_block
|
|
.saturating_add(max_block_distance)
|
|
.min(estimated_block),
|
|
),
|
|
}
|
|
}
|
|
None => (to_block, to_block),
|
|
},
|
|
None => (estimated_block, estimated_block),
|
|
})
|
|
}
|
|
NetworkType::Utxo => {
|
|
Err(OffchainErr::UtxoNotImplemented(network_id).into())
|
|
}
|
|
_ => Err(OffchainErr::UnknownNetworkType(network_id).into()),
|
|
}
|
|
}
|
|
Err(_) => Err(OffchainErr::StorageRetrievalError(network_id).into()),
|
|
}
|
|
},
|
|
)
|
|
.map_err(|error| match error {
|
|
MutateStorageError::ValueFunctionFailed(offchain_error) => offchain_error,
|
|
MutateStorageError::ConcurrentModification(_) => {
|
|
OffchainErr::ConcurrentModificationError(network_id).into()
|
|
}
|
|
})
|
|
.map(|_| ())
|
|
}
|
|
|
|
fn apply_evm_response(
|
|
response_bytes: &[u8],
|
|
authority_index: AuthIndex,
|
|
authority_key: T::AuthorityId,
|
|
session_index: SessionIndex,
|
|
network_id: NetworkIdOf<T>,
|
|
) -> OffchainResult<T, Option<u64>> {
|
|
match Self::parse_evm_response(&response_bytes)? {
|
|
EvmResponseType::BlockNumber(new_evm_block) => {
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🧐 New evm block #{:?} found for network {:?}",
|
|
new_evm_block,
|
|
network_id,
|
|
);
|
|
Ok(Some(new_evm_block))
|
|
}
|
|
EvmResponseType::TransactionLogs(evm_logs) => {
|
|
let claps: Vec<_> = evm_logs
|
|
.iter()
|
|
.filter_map(|log| {
|
|
log.is_sufficient().then(|| Clap {
|
|
authority_index,
|
|
session_index,
|
|
network_id,
|
|
removed: log.removed,
|
|
receiver: T::AccountId::decode(&mut &log.topics[1][0..32])
|
|
.expect("32 bytes always construct an AccountId32"),
|
|
amount: u128::from_be_bytes(
|
|
log.topics[2][16..32]
|
|
.try_into()
|
|
.expect("amount is valid hex; qed"),
|
|
)
|
|
.saturated_into::<BalanceOf<T>>(),
|
|
transaction_hash: log
|
|
.transaction_hash
|
|
.clone()
|
|
.expect("tx hash exists; qed"),
|
|
block_number: log.block_number.expect("block number exists; qed"),
|
|
})
|
|
})
|
|
.collect();
|
|
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🧐 {:?} evm logs found for network {:?}",
|
|
claps.len(),
|
|
network_id,
|
|
);
|
|
|
|
for clap in claps {
|
|
let signature = authority_key
|
|
.sign(&clap.encode())
|
|
.ok_or(OffchainErr::FailedSigning)?;
|
|
let call = Call::slow_clap { clap, signature };
|
|
|
|
SubmitTransaction::<T, Call<T>>::submit_unsigned_transaction(call.into())
|
|
.map_err(|_| OffchainErr::SubmitTransaction)?;
|
|
}
|
|
|
|
Ok(None)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn local_authorities(
|
|
session_index: &SessionIndex,
|
|
) -> impl Iterator<Item = (u32, T::AuthorityId)> {
|
|
let authorities = Authorities::<T>::get(session_index);
|
|
let mut local_authorities = T::AuthorityId::all();
|
|
local_authorities.sort();
|
|
|
|
authorities
|
|
.into_iter()
|
|
.enumerate()
|
|
.filter_map(move |(index, authority)| {
|
|
local_authorities
|
|
.binary_search(&authority)
|
|
.ok()
|
|
.map(|location| (index as u32, local_authorities[location].clone()))
|
|
})
|
|
}
|
|
|
|
fn fetch_from_remote(rpc_endpoint: &[u8], request_body: &[u8]) -> OffchainResult<T, Vec<u8>> {
|
|
let rpc_endpoint_str =
|
|
core::str::from_utf8(rpc_endpoint).expect("rpc endpoint valid str; qed");
|
|
let request_body_str =
|
|
core::str::from_utf8(request_body).expect("request body valid str: qed");
|
|
|
|
let deadline = sp_io::offchain::timestamp()
|
|
.add(rt_offchain::Duration::from_millis(FETCH_TIMEOUT_PERIOD));
|
|
|
|
let pending = rt_offchain::http::Request::post(&rpc_endpoint_str, vec![request_body_str])
|
|
.add_header("Accept", "application/json")
|
|
.add_header("Content-Type", "application/json")
|
|
.deadline(deadline)
|
|
.send()
|
|
.map_err(|err| OffchainErr::HttpRequestError(err))?;
|
|
|
|
let response = pending
|
|
.try_wait(deadline)
|
|
.map_err(|_| OffchainErr::RequestUncompleted)?
|
|
.map_err(|_| OffchainErr::RequestUncompleted)?;
|
|
|
|
if response.code != 200 {
|
|
return Err(OffchainErr::HttpResponseNotOk(response.code));
|
|
}
|
|
|
|
Ok(response.body().collect::<Vec<u8>>())
|
|
}
|
|
|
|
fn prepare_request_body_for_latest_block(network_data: &NetworkData) -> Vec<u8> {
|
|
match network_data.network_type {
|
|
NetworkType::Evm => {
|
|
b"{\"id\":0,\"jsonrpc\":\"2.0\",\"method\":\"eth_blockNumber\"}".to_vec()
|
|
}
|
|
_ => Default::default(),
|
|
}
|
|
}
|
|
|
|
fn prepare_request_body_for_latest_transfers(
|
|
from_block: u64,
|
|
to_block: u64,
|
|
network_data: &NetworkData,
|
|
) -> Vec<u8> {
|
|
match network_data.network_type {
|
|
NetworkType::Evm => {
|
|
let mut body =
|
|
b"{\"id\":0,\"jsonrpc\":\"2.0\",\"method\":\"eth_getLogs\",\"params\":[{"
|
|
.to_vec();
|
|
body.extend(b"\"fromBlock\":\"".to_vec());
|
|
body.extend(Self::u64_to_hexadecimal_bytes(from_block));
|
|
body.extend(b"\",\"toBlock\":\"".to_vec());
|
|
body.extend(Self::u64_to_hexadecimal_bytes(to_block));
|
|
body.extend(b"\",\"address\":\"".to_vec());
|
|
body.extend(network_data.gatekeeper.to_vec());
|
|
body.extend(b"\",\"topics\":[\"".to_vec());
|
|
body.extend(network_data.topic_name.to_vec());
|
|
body.extend(b"\"]}]}".to_vec());
|
|
body
|
|
}
|
|
_ => Default::default(),
|
|
}
|
|
}
|
|
|
|
fn parse_evm_response(response_bytes: &[u8]) -> OffchainResult<T, EvmResponseType> {
|
|
let response_str = sp_std::str::from_utf8(&response_bytes)
|
|
.map_err(|_| OffchainErr::HttpBytesParsingError)?;
|
|
|
|
let response_result: EvmResponse =
|
|
serde_json::from_str(&response_str).map_err(|_| OffchainErr::HttpJsonParsingError)?;
|
|
|
|
if response_result.error.is_some() {
|
|
return Err(OffchainErr::ErrorInEvmResponse);
|
|
}
|
|
|
|
Ok(response_result
|
|
.result
|
|
.ok_or(OffchainErr::ErrorInEvmResponse)?)
|
|
}
|
|
|
|
fn calculate_median_claps(session_index: &SessionIndex) -> u32 {
|
|
let mut claps_in_session = ClapsInSession::<T>::get(session_index)
|
|
.values()
|
|
.filter_map(|value| (!value.disabled).then(|| value.claps))
|
|
.collect::<Vec<_>>();
|
|
|
|
if claps_in_session.is_empty() {
|
|
return 0;
|
|
}
|
|
|
|
claps_in_session.sort();
|
|
let number_of_claps = claps_in_session.len();
|
|
|
|
if number_of_claps % 2 == 0 {
|
|
let mid_left = claps_in_session[number_of_claps / 2 - 1];
|
|
let mid_right = claps_in_session[number_of_claps / 2];
|
|
(mid_left + mid_right) / 2
|
|
} else {
|
|
claps_in_session[number_of_claps / 2]
|
|
}
|
|
}
|
|
|
|
fn is_good_actor(
|
|
authority_index: usize,
|
|
session_index: SessionIndex,
|
|
median_claps: u32,
|
|
) -> bool {
|
|
if median_claps == 0 {
|
|
return true;
|
|
}
|
|
|
|
let number_of_claps = ClapsInSession::<T>::get(session_index)
|
|
.entry(authority_index as AuthIndex)
|
|
.or_default()
|
|
.claps;
|
|
|
|
let authority_deviation = if number_of_claps < median_claps {
|
|
Perbill::from_rational(median_claps - number_of_claps, median_claps)
|
|
} else {
|
|
Perbill::from_rational(number_of_claps - median_claps, median_claps)
|
|
};
|
|
authority_deviation < Perbill::from_percent(T::OffenceThreshold::get())
|
|
}
|
|
|
|
fn initialize_authorities(authorities: Vec<T::AuthorityId>) {
|
|
let session_index = T::ValidatorSet::session_index();
|
|
assert!(
|
|
Authorities::<T>::get(&session_index).is_empty(),
|
|
"Authorities are already initilized!"
|
|
);
|
|
let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::try_from(authorities)
|
|
.expect("more than the maximum number of authorities");
|
|
|
|
if let Some(target_session_index) = session_index.checked_sub(T::HistoryDepth::get()) {
|
|
Self::clear_history(&target_session_index);
|
|
}
|
|
|
|
Authorities::<T>::set(&session_index, bounded_authorities);
|
|
ClapsInSession::<T>::set(&session_index, Default::default());
|
|
}
|
|
|
|
fn clear_history(target_session_index: &SessionIndex) {
|
|
ClapsInSession::<T>::remove(target_session_index);
|
|
let mut cursor = ReceivedClaps::<T>::clear_prefix((target_session_index,), u32::MAX, None);
|
|
debug_assert!(cursor.maybe_cursor.is_none());
|
|
cursor =
|
|
ApplausesForTransaction::<T>::clear_prefix((target_session_index,), u32::MAX, None);
|
|
debug_assert!(cursor.maybe_cursor.is_none());
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn set_test_authorities(session_index: SessionIndex, authorities: Vec<T::AuthorityId>) {
|
|
let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::try_from(authorities)
|
|
.expect("more than the maximum number of authorities");
|
|
Authorities::<T>::set(session_index, bounded_authorities);
|
|
}
|
|
|
|
#[cfg(feature = "runtime-benchmarks")]
|
|
fn trigger_nullification_for_benchmark() {
|
|
T::NetworkDataHandler::trigger_nullification();
|
|
}
|
|
}
|
|
|
|
impl<T: Config> sp_runtime::BoundToRuntimeAppPublic for Pallet<T> {
|
|
type Public = T::AuthorityId;
|
|
}
|
|
|
|
impl<T: Config> BlockNumberProvider for Pallet<T> {
|
|
type BlockNumber = BlockNumberFor<T>;
|
|
fn current_block_number() -> Self::BlockNumber {
|
|
T::BlockNumberProvider::current_block_number()
|
|
}
|
|
}
|
|
|
|
impl<T: Config> OneSessionHandler<T::AccountId> for Pallet<T> {
|
|
type Key = T::AuthorityId;
|
|
|
|
fn on_genesis_session<'a, I: 'a>(validators: I)
|
|
where
|
|
I: Iterator<Item = (&'a T::AccountId, T::AuthorityId)>,
|
|
{
|
|
let authorities = validators.map(|x| x.1).collect::<Vec<_>>();
|
|
Self::initialize_authorities(authorities);
|
|
}
|
|
|
|
fn on_new_session<'a, I: 'a>(_changed: bool, validators: I, _queued_validators: I)
|
|
where
|
|
I: Iterator<Item = (&'a T::AccountId, T::AuthorityId)>,
|
|
{
|
|
let authorities = validators.map(|x| x.1).collect::<Vec<_>>();
|
|
Self::initialize_authorities(authorities);
|
|
}
|
|
|
|
fn on_before_session_ending() {
|
|
let session_index = T::ValidatorSet::session_index();
|
|
let validators = T::ValidatorSet::validators();
|
|
let authorities = Authorities::<T>::get(&session_index);
|
|
|
|
let median_claps = Self::calculate_median_claps(&session_index);
|
|
|
|
let offenders = validators
|
|
.into_iter()
|
|
.enumerate()
|
|
.filter(|(index, _)| !Self::is_good_actor(*index, session_index, median_claps))
|
|
.filter_map(|(_, id)| {
|
|
<T::ValidatorSet as ValidatorSetWithIdentification<T::AccountId>>::IdentificationOf::convert(
|
|
id.clone(),
|
|
).map(|full_id| (id, full_id))
|
|
})
|
|
.collect::<Vec<IdentificationTuple<T>>>();
|
|
|
|
if offenders.is_empty() {
|
|
Self::deposit_event(Event::<T>::AuthoritiesEquilibrium);
|
|
} else {
|
|
Self::deposit_event(Event::<T>::SomeAuthoritiesTrottling {
|
|
throttling: offenders.clone(),
|
|
});
|
|
|
|
let validator_set_count = authorities.len() as u32;
|
|
let offence = ThrottlingOffence {
|
|
session_index,
|
|
validator_set_count,
|
|
offenders,
|
|
};
|
|
if let Err(e) = T::ReportUnresponsiveness::report_offence(vec![], offence) {
|
|
sp_runtime::print(e)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn on_disabled(validator_index: u32) {
|
|
let session_index = T::ValidatorSet::session_index();
|
|
ClapsInSession::<T>::mutate(&session_index, |claps_details| {
|
|
(*claps_details)
|
|
.entry(validator_index as AuthIndex)
|
|
.and_modify(|individual| (*individual).disabled = true)
|
|
.or_insert(SessionAuthorityInfo {
|
|
claps: 0u32,
|
|
disabled: true,
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
#[derive(RuntimeDebug, TypeInfo)]
|
|
#[cfg_attr(feature = "std", derive(Clone, PartialEq, Eq))]
|
|
pub struct ThrottlingOffence<Offender> {
|
|
pub session_index: SessionIndex,
|
|
pub validator_set_count: u32,
|
|
pub offenders: Vec<Offender>,
|
|
}
|
|
|
|
impl<Offender: Clone> Offence<Offender> for ThrottlingOffence<Offender> {
|
|
const ID: Kind = *b"slow-clap:throtl";
|
|
type TimeSlot = SessionIndex;
|
|
|
|
fn offenders(&self) -> Vec<Offender> {
|
|
self.offenders.clone()
|
|
}
|
|
|
|
fn session_index(&self) -> SessionIndex {
|
|
self.session_index
|
|
}
|
|
|
|
fn validator_set_count(&self) -> u32 {
|
|
self.validator_set_count
|
|
}
|
|
|
|
fn time_slot(&self) -> Self::TimeSlot {
|
|
self.session_index
|
|
}
|
|
|
|
fn slash_fraction(&self, offenders_count: u32) -> Perbill {
|
|
if let Some(threshold) = offenders_count.checked_sub(self.validator_set_count / 10 + 1) {
|
|
let x = Perbill::from_rational(3 * threshold, self.validator_set_count);
|
|
x.saturating_mul(Perbill::from_percent(7))
|
|
} else {
|
|
Perbill::default()
|
|
}
|
|
}
|
|
}
|