1335 lines
47 KiB
Rust
Executable File
1335 lines
47 KiB
Rust
Executable File
// Ensure we're `no_std` when compiling for Wasm.
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#![cfg_attr(not(feature = "std"), no_std)]
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use codec::{Decode, Encode, MaxEncodedLen};
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use scale_info::TypeInfo;
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use serde::{Deserializer, Deserialize};
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pub use pallet::*;
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use frame_support::{
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pallet_prelude::*,
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traits::{
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tokens::{
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fungible::{Inspect, Mutate},
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Preservation, Precision, Fortitude,
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},
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EstimateNextSessionRotation, ValidatorSet, ValidatorSetWithIdentification,
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OneSessionHandler, Get,
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},
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PalletId, BoundedSlice, BoundedVec, WeakBoundedVec,
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};
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use frame_system::{
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offchain::{SendTransactionTypes, SubmitTransaction},
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pallet_prelude::*,
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};
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use sp_core::{H160, H256};
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use sp_runtime::{
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traits::{
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TrailingZeroInput, Saturating, BlockNumberProvider, Convert,
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AccountIdConversion,
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},
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offchain as rt_offchain,
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offchain::{
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HttpError,
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storage::StorageValueRef,
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storage_lock::{BlockAndTime, StorageLock},
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},
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RuntimeAppPublic, Perbill, RuntimeDebug, SaturatedConversion,
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};
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use sp_std::{
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vec::Vec, prelude::*,
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collections::btree_map::BTreeMap,
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};
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use sp_staking::{
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offence::{Kind, Offence, ReportOffence},
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SessionIndex,
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};
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use sp_io::hashing::keccak_256;
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use ghost_networks::{
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NetworkData, NetworkDataBasicHandler, NetworkDataInspectHandler,
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NetworkDataMutateHandler,
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};
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pub mod weights;
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pub use crate::weights::WeightInfo;
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mod tests;
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mod mock;
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mod benchmarking;
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pub mod sr25519 {
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mod app_sr25519 {
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use sp_application_crypto::{app_crypto, sr25519, KeyTypeId};
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const SLOW_CLAP: KeyTypeId = KeyTypeId(*b"slow");
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app_crypto!(sr25519, SLOW_CLAP);
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}
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sp_application_crypto::with_pair! {
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/// A staking keypair sr25519 at its crypto.
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pub type AuthorityPair = app_sr25519::Pair;
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}
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/// A staking signature using sr25519 as its crypto.
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pub type AuthoritySignature = app_sr25519::Signature;
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/// A staking identifier using sr25519 as its crypto.
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pub type AuthorityId = app_sr25519::Public;
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}
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const LOG_TARGET: &str = "runtime::ghost-slow-clap";
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const DB_PREFIX: &[u8] = b"slow_clap::";
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const FETCH_TIMEOUT_PERIOD: u64 = 3_000;
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const LOCK_BLOCK_EXPIRATION: u32 = 5;
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const LOCK_TIMEOUT_EXPIRATION: u64 = FETCH_TIMEOUT_PERIOD + 1_000;
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const PERCENT_DIVISOR: u32 = 4;
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const COMPANIONS_LIMIT: usize = 20;
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pub type CompanionId = u128;
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pub type AuthIndex = u32;
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#[derive(RuntimeDebug, Clone, PartialEq, Deserialize, Encode, Decode)]
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struct EvmResponse {
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#[serde(default)]
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id: Option<u32>,
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#[serde(default, deserialize_with = "de_string_to_bytes")]
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jsonrpc: Option<Vec<u8>>,
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#[serde(default, deserialize_with = "de_string_to_bytes")]
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error: Option<Vec<u8>>,
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#[serde(default)]
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result: Option<EvmResponseType>,
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}
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#[derive(RuntimeDebug, Clone, PartialEq, Deserialize, Encode, Decode)]
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#[serde(untagged)]
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enum EvmResponseType {
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#[serde(deserialize_with = "de_string_to_u64_pure")]
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BlockNumber(u64),
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TransactionLogs(Vec<Log>),
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}
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#[derive(RuntimeDebug, Clone, Eq, PartialEq, Ord, PartialOrd, Deserialize, Encode, Decode)]
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#[serde(rename_all = "camelCase")]
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struct Log {
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#[serde(default, deserialize_with = "de_string_to_h256")]
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transaction_hash: Option<H256>,
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#[serde(default, deserialize_with = "de_string_to_u64")]
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block_number: Option<u64>,
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#[serde(default, deserialize_with = "de_string_to_vec_of_bytes")]
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topics: Vec<Vec<u8>>,
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#[serde(default, deserialize_with = "de_string_to_bytes")]
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address: Option<Vec<u8>>,
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#[serde(default, deserialize_with = "de_string_to_btree_map")]
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data: BTreeMap<u128, u128>,
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removed: bool,
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}
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pub fn de_string_to_bytes<'de, D>(de: D) -> Result<Option<Vec<u8>>, D::Error>
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where D: Deserializer<'de> {
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let s: &str = Deserialize::deserialize(de)?;
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Ok(Some(s.as_bytes().to_vec()))
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}
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pub fn de_string_to_u64<'de, D>(de: D) -> Result<Option<u64>, D::Error>
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where D: Deserializer<'de> {
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let s: &str = Deserialize::deserialize(de)?;
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let s = if s.starts_with("0x") { &s[2..] } else { &s };
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Ok(u64::from_str_radix(s, 16).ok())
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}
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pub fn de_string_to_u64_pure<'de, D>(de: D) -> Result<u64, D::Error>
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where D: Deserializer<'de> {
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let s: &str = Deserialize::deserialize(de)?;
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let s = if s.starts_with("0x") { &s[2..] } else { &s };
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Ok(u64::from_str_radix(s, 16).unwrap_or_default())
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}
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pub fn de_string_to_h256<'de, D>(de: D) -> Result<Option<H256>, D::Error>
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where D: Deserializer<'de> {
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let s: &str = Deserialize::deserialize(de)?;
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let start_index = if s.starts_with("0x") { 2 } else { 0 };
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let h256: Vec<_> = (start_index..s.len())
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.step_by(2)
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.map(|i| u8::from_str_radix(&s[i..i+2], 16).expect("valid u8 symbol; qed"))
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.collect();
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Ok(Some(H256::from_slice(&h256)))
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}
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pub fn de_string_to_vec_of_bytes<'de, D>(de: D) -> Result<Vec<Vec<u8>>, D::Error>
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where D: Deserializer<'de> {
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let strings: Vec<&str> = Deserialize::deserialize(de)?;
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Ok(strings
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.iter()
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.map(|s| {
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let start_index = if s.starts_with("0x") { 2 } else { 0 };
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(start_index..s.len())
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.step_by(2)
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.map(|i| u8::from_str_radix(&s[i..i+2], 16).expect("valid u8 symbol; qed"))
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.collect::<Vec<u8>>()
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})
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.collect::<Vec<Vec<u8>>>())
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}
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pub fn de_string_to_btree_map<'de, D>(de: D) -> Result<BTreeMap<u128, u128>, D::Error>
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where D: Deserializer<'de> {
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let s: &str = Deserialize::deserialize(de)?;
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let start_index = if s.starts_with("0x") { 2 } else { 0 };
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Ok(BTreeMap::from_iter((start_index..s.len())
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.step_by(64)
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.map(|i| (
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u128::from_str_radix(&s[i..i+32], 16).expect("valid u8 symbol; qed"),
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u128::from_str_radix(&s[i+32..i+64], 16).expect("valid u8 symbol; qed"),
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))))
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}
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#[derive(RuntimeDebug, Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, TypeInfo, MaxEncodedLen)]
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pub struct Clap<AccountId, NetworkId, Balance> {
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pub session_index: SessionIndex,
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pub authority_index: AuthIndex,
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pub transaction_hash: H256,
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pub block_number: u64,
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pub removed: bool,
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pub network_id: NetworkId,
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pub receiver: AccountId,
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pub amount: Balance,
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pub companions: BTreeMap<CompanionId, Balance>,
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}
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#[derive(Encode, Decode, Clone, PartialEq, RuntimeDebug, MaxEncodedLen, TypeInfo)]
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pub struct Companion<NetworkId, Balance> {
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pub network_id: NetworkId,
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pub receiver: H160,
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pub amount: Balance,
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}
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#[derive(Encode, Decode, Clone, PartialEq, RuntimeDebug, MaxEncodedLen, TypeInfo)]
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pub struct SessionAuthorityInfo {
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pub actions: u32,
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pub disabled: bool,
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}
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#[cfg_attr(test, derive(PartialEq))]
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enum OffchainErr<NetworkId> {
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FailedSigning,
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FailedToAcquireLock(NetworkId),
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SubmitTransaction,
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HttpJsonParsingError,
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HttpBytesParsingError,
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HttpRequestError(HttpError),
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RequestUncompleted,
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HttpResponseNotOk(u16),
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ErrorInEvmResponse,
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NoEvmLogsFound(NetworkId),
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OnlyPendingEvmLogs(NetworkId),
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}
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impl<NetworkId: core::fmt::Debug> core::fmt::Debug for OffchainErr<NetworkId> {
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fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::fmt::Result {
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match *self {
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OffchainErr::FailedSigning => write!(fmt, "Failed to sign clap."),
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OffchainErr::FailedToAcquireLock(ref network_id) => write!(fmt, "Failed to acquire lock for network #{:?}.", network_id),
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OffchainErr::SubmitTransaction => write!(fmt, "Failed to submit transaction."),
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OffchainErr::HttpJsonParsingError => write!(fmt, "Failed to parse evm response as JSON."),
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OffchainErr::HttpBytesParsingError => write!(fmt, "Failed to parse evm response as bytes."),
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OffchainErr::HttpRequestError(http_error) => match http_error {
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HttpError::DeadlineReached => write!(fmt, "Requested action couldn't been completed within a deadline."),
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HttpError::IoError => write!(fmt, "There was an IO error while processing the request."),
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HttpError::Invalid => write!(fmt, "The ID of the request is invalid in this context"),
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},
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OffchainErr::RequestUncompleted => write!(fmt, "Failed to complete request."),
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OffchainErr::HttpResponseNotOk(code) => write!(fmt, "Http response returned code {:?}", code),
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OffchainErr::ErrorInEvmResponse => write!(fmt, "Error in evm reponse."),
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OffchainErr::NoEvmLogsFound(ref network_id) => write!(fmt, "No incoming evm logs for network #{:?}.", network_id),
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OffchainErr::OnlyPendingEvmLogs(ref network_id) => write!(fmt, "Only pending evm logs for network #{:?}.", network_id),
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}
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}
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}
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pub type NetworkIdOf<T> =
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<<T as Config>::NetworkDataHandler as NetworkDataBasicHandler>::NetworkId;
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pub type BalanceOf<T> = <<T as Config>::Currency as Inspect<
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<T as frame_system::Config>::AccountId,
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>>::Balance;
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pub type ValidatorId<T> = <<T as Config>::ValidatorSet as ValidatorSet<
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<T as frame_system::Config>::AccountId,
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>>::ValidatorId;
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pub type IdentificationTuple<T> = (
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ValidatorId<T>,
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<<T as Config>::ValidatorSet as ValidatorSetWithIdentification<
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<T as frame_system::Config>::AccountId,
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>>::Identification,
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);
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type OffchainResult<T, A> = Result<A, OffchainErr<NetworkIdOf<T>>>;
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#[frame_support::pallet]
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pub mod pallet {
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use super::*;
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/// The current storage version.
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const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
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#[pallet::pallet]
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#[pallet::storage_version(STORAGE_VERSION)]
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#[pallet::without_storage_info]
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pub struct Pallet<T>(_);
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#[pallet::config]
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pub trait Config: SendTransactionTypes<Call<Self>> + frame_system::Config {
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type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
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type AuthorityId: Member
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+ Parameter
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+ RuntimeAppPublic
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+ Ord
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+ MaybeSerializeDeserialize
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+ MaxEncodedLen;
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type NextSessionRotation: EstimateNextSessionRotation<BlockNumberFor<Self>>;
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type ValidatorSet: ValidatorSetWithIdentification<Self::AccountId>;
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type Currency: Inspect<Self::AccountId> + Mutate<Self::AccountId>;
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type NetworkDataHandler: NetworkDataBasicHandler +
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NetworkDataInspectHandler<NetworkData> +
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NetworkDataMutateHandler<NetworkData>;
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type BlockNumberProvider: BlockNumberProvider<BlockNumber = BlockNumberFor<Self>>;
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type ReportUnresponsiveness: ReportOffence<
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Self::AccountId,
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IdentificationTuple<Self>,
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ThrottlingOffence<IdentificationTuple<Self>>,
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>;
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#[pallet::constant]
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type MaxAuthorities: Get<u32>;
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#[pallet::constant]
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type MaxAuthorityInfoInSession: Get<u32>;
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#[pallet::constant]
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type MaxNumberOfClaps: Get<u32>;
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#[pallet::constant]
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type ApplauseThreshold: Get<u32>;
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#[pallet::constant]
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type OffenceThreshold: Get<u32>;
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#[pallet::constant]
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type UnsignedPriority: Get<TransactionPriority>;
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#[pallet::constant]
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type TreasuryPalletId: Get<PalletId>;
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type WeightInfo: WeightInfo;
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}
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#[pallet::event]
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#[pallet::generate_deposit(pub(super) fn deposit_event)]
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pub enum Event<T: Config> {
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AllGood,
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SomeTrottling { throttling: Vec<IdentificationTuple<T>> },
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Clapped {
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authority_id: T::AuthorityId,
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network_id: NetworkIdOf<T>,
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clap_hash: H256,
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transaction_hash: H256,
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receiver: T::AccountId,
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amount: BalanceOf<T>,
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},
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Applaused {
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network_id: NetworkIdOf<T>,
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receiver: T::AccountId,
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received_amount: BalanceOf<T>,
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number_of_companions: u32,
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},
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CompanionCreated {
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companion_id: CompanionId,
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owner: T::AccountId,
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companion: Companion<NetworkIdOf<T>, BalanceOf<T>>,
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},
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CompanionReleased {
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network_id: NetworkIdOf<T>,
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companion_id: CompanionId,
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who: T::AccountId,
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release_block: BlockNumberFor<T>,
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},
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CompanionKilled {
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network_id: NetworkIdOf<T>,
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who: T::AccountId,
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companion_id: CompanionId,
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freed_balance: BalanceOf<T>,
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},
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}
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#[pallet::error]
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pub enum Error<T> {
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NotAnAuthority,
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CurrentValidatorIsDisabled,
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CouldNotHashCompanions,
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AlreadyClapped,
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CompanionAlreadyRegistered,
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CompanionDetailsAlreadyRegistered,
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CompanionDetailsNotRegistered,
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CompanionAmountNotExistent,
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CompanionAmountUnderflow,
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NoMoreCompanions,
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NotValidCompanion,
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NonRegisteredNetwork,
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ReleaseTimeHasNotCome,
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}
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#[pallet::storage]
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#[pallet::getter(fn received_claps)]
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pub(super) type ReceivedClaps<T: Config> = StorageDoubleMap<
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_,
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Twox64Concat,
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H256,
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Twox64Concat,
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T::AuthorityId,
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bool,
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ValueQuery
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>;
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#[pallet::storage]
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#[pallet::getter(fn applauses_for_transaction)]
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pub(super) type ApplausesForTransaction<T: Config> = StorageMap<
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_,
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Twox64Concat,
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H256,
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bool,
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ValueQuery
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>;
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#[pallet::storage]
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#[pallet::getter(fn authorities_claps)]
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pub(super) type AuthoritiesClaps<T: Config> = StorageDoubleMap<
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_,
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Twox64Concat,
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T::AuthorityId,
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Twox64Concat,
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H256,
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bool,
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ValueQuery,
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>;
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#[pallet::storage]
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#[pallet::getter(fn authority_info_in_session)]
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pub(super) type AuthorityInfoInSession<T: Config> = StorageMap<
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_,
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Twox64Concat,
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SessionIndex,
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BoundedVec<SessionAuthorityInfo, T::MaxAuthorityInfoInSession>,
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ValueQuery,
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>;
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|
#[pallet::storage]
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#[pallet::getter(fn companions)]
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pub(super) type Companions<T: Config> = StorageDoubleMap<
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_,
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Twox64Concat,
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NetworkIdOf<T>,
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Twox64Concat,
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CompanionId,
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|
T::AccountId,
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|
OptionQuery,
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>;
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|
|
|
|
#[pallet::storage]
|
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#[pallet::getter(fn companion_details)]
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pub(super) type CompanionDetails<T: Config> = StorageMap<
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_,
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|
Twox64Concat,
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CompanionId,
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Companion<NetworkIdOf<T>, BalanceOf<T>>,
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|
OptionQuery,
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>;
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|
|
#[pallet::storage]
|
|
#[pallet::getter(fn release_blocks)]
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|
pub(super) type ReleaseBlocks<T: Config> = StorageMap<
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_,
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Twox64Concat,
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CompanionId,
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BlockNumberFor<T>,
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ValueQuery,
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>;
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|
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#[pallet::storage]
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#[pallet::getter(fn current_companion_id)]
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pub(super) type CurrentCompanionId<T: Config> =
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StorageValue<_, CompanionId, ValueQuery>;
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|
|
#[pallet::storage]
|
|
#[pallet::getter(fn keys)]
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|
pub(super) type Authorities<T: Config> =
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StorageValue<_, WeakBoundedVec<T::AuthorityId, T::MaxAuthorities>, ValueQuery>;
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|
|
#[pallet::genesis_config]
|
|
#[derive(frame_support::DefaultNoBound)]
|
|
pub struct GenesisConfig<T: Config> {
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pub keys: Vec<T::AuthorityId>,
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}
|
|
|
|
#[pallet::genesis_build]
|
|
impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
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|
fn build(&self) {
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|
Pallet::<T>::initialize_authorities(&self.keys);
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Pallet::<T>::restart_clap_round(1, self.keys.len());
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}
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}
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|
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#[pallet::call]
|
|
impl<T: Config> Pallet<T> {
|
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#[pallet::call_index(0)]
|
|
#[pallet::weight((
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|
T::WeightInfo::slow_clap(
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|
claps.len() as u32,
|
|
claps.iter().fold(0u32, |acc, c| {
|
|
acc + c.companions.len() as u32
|
|
})
|
|
),
|
|
frame_support::dispatch::Pays::No,
|
|
))]
|
|
pub fn slow_clap(
|
|
origin: OriginFor<T>,
|
|
claps: Vec<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::clap_if_possible(claps)?;
|
|
Ok(())
|
|
}
|
|
|
|
#[pallet::call_index(1)]
|
|
#[pallet::weight(T::WeightInfo::propose_companion())]
|
|
pub fn propose_companion(
|
|
origin: OriginFor<T>,
|
|
network_id: NetworkIdOf<T>,
|
|
companion: Companion<NetworkIdOf<T>, BalanceOf<T>>,
|
|
) -> DispatchResult {
|
|
let who = ensure_signed(origin)?;
|
|
let companion_id = CurrentCompanionId::<T>::get();
|
|
|
|
ensure!(companion.amount > T::Currency::minimum_balance(),
|
|
Error::<T>::CompanionAmountNotExistent);
|
|
ensure!(T::NetworkDataHandler::get(&network_id).is_some(),
|
|
Error::<T>::NonRegisteredNetwork);
|
|
|
|
T::Currency::burn_from(
|
|
&who,
|
|
companion.amount,
|
|
Preservation::Expendable,
|
|
Precision::Exact,
|
|
Fortitude::Force,
|
|
)?;
|
|
|
|
Companions::<T>::set(network_id, companion_id, Some(who.clone()));
|
|
CompanionDetails::<T>::set(companion_id, Some(companion.clone()));
|
|
CurrentCompanionId::<T>::set(companion_id
|
|
.checked_add(1)
|
|
.ok_or(Error::<T>::NoMoreCompanions)?);
|
|
|
|
Self::deposit_event(Event::<T>::CompanionCreated {
|
|
companion_id,
|
|
owner: who,
|
|
companion,
|
|
});
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[pallet::call_index(2)]
|
|
#[pallet::weight(T::WeightInfo::release_companion())]
|
|
pub fn release_companion(
|
|
origin: OriginFor<T>,
|
|
network_id: NetworkIdOf<T>,
|
|
companion_id: CompanionId,
|
|
) -> DispatchResult {
|
|
let who = ensure_signed(origin)?;
|
|
|
|
let owner = Companions::<T>::get(network_id, companion_id);
|
|
let network = T::NetworkDataHandler::get(&network_id);
|
|
|
|
ensure!(owner.is_some_and(|o| o == who), Error::<T>::NotValidCompanion);
|
|
ensure!(CompanionDetails::<T>::get(companion_id).is_some(),
|
|
Error::<T>::CompanionDetailsNotRegistered);
|
|
|
|
let offset = T::BlockNumberProvider::current_block_number() +
|
|
network
|
|
.ok_or(Error::<T>::NonRegisteredNetwork)?
|
|
.release_delay
|
|
.unwrap_or_default()
|
|
.saturated_into::<BlockNumberFor<T>>();
|
|
|
|
ReleaseBlocks::<T>::set(companion_id, offset);
|
|
|
|
Self::deposit_event(Event::<T>::CompanionReleased {
|
|
network_id,
|
|
companion_id,
|
|
who,
|
|
release_block: offset,
|
|
});
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[pallet::call_index(3)]
|
|
#[pallet::weight(T::WeightInfo::kill_companion())]
|
|
pub fn kill_companion(
|
|
origin: OriginFor<T>,
|
|
network_id: NetworkIdOf<T>,
|
|
companion_id: CompanionId,
|
|
) -> DispatchResult {
|
|
let who = ensure_signed(origin)?;
|
|
|
|
ensure!(ReleaseBlocks::<T>::get(companion_id) <=
|
|
T::BlockNumberProvider::current_block_number(),
|
|
Error::<T>::ReleaseTimeHasNotCome);
|
|
|
|
ensure!(Companions::<T>::get(network_id, companion_id).is_some_and(|o| o == who),
|
|
Error::<T>::NotValidCompanion);
|
|
|
|
let companion = CompanionDetails::<T>::get(companion_id)
|
|
.ok_or(Error::<T>::CompanionDetailsNotRegistered)?;
|
|
|
|
Companions::<T>::remove(network_id, companion_id);
|
|
CompanionDetails::<T>::remove(companion_id);
|
|
|
|
T::Currency::mint_into(&who, companion.amount)?;
|
|
|
|
Self::deposit_event(Event::<T>::CompanionKilled {
|
|
network_id,
|
|
who,
|
|
companion_id,
|
|
freed_balance: companion.amount,
|
|
});
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
#[pallet::hooks]
|
|
impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
|
|
fn offchain_worker(now: BlockNumberFor<T>) {
|
|
// Only send messages of we are a potential validator.
|
|
if sp_io::offchain::is_validator() {
|
|
let networks_len = T::NetworkDataHandler::iter().count();
|
|
if networks_len == 0 {
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"👏 Skipping slow clap at {:?}: no evm networks",
|
|
now,
|
|
);
|
|
} else {
|
|
for result in Self::start_slow_clapping(now, networks_len).into_iter().flatten() {
|
|
if let Err(e) = result {
|
|
log::debug!(
|
|
target: LOG_TARGET,
|
|
"👏 Skipping slow clap at {:?}: {:?}",
|
|
now,
|
|
e,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🤥 Not a validator, skipping slow clap at {:?}.",
|
|
now,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[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 { claps, signature } = call {
|
|
if claps.is_empty() || claps.len() > T::MaxNumberOfClaps::get() as usize {
|
|
return InvalidTransaction::BadProof.into();
|
|
}
|
|
|
|
if claps
|
|
.iter()
|
|
.fold(0usize, |max_len, c| {
|
|
usize::max(max_len, c.companions.len())
|
|
}) > COMPANIONS_LIMIT {
|
|
return InvalidTransaction::BadProof.into();
|
|
}
|
|
|
|
let authority_index = match &claps[..] {
|
|
[head, tail @ ..] => tail
|
|
.iter()
|
|
.all(|x| x.authority_index == head.authority_index)
|
|
.then(|| head.authority_index),
|
|
_ => None,
|
|
};
|
|
|
|
if authority_index.is_none() {
|
|
return InvalidTransaction::BadProof.into();
|
|
}
|
|
|
|
let authority_index = authority_index
|
|
.expect("authority index info already checked; qed");
|
|
|
|
let authorities = Authorities::<T>::get();
|
|
let authority = match authorities.get(authority_index as usize) {
|
|
Some(id) => id,
|
|
None => return InvalidTransaction::BadProof.into(),
|
|
};
|
|
|
|
let signature_valid = claps.using_encoded(|encoded_claps| {
|
|
authority.verify(&encoded_claps, signature)
|
|
});
|
|
|
|
if !signature_valid {
|
|
return InvalidTransaction::BadProof.into();
|
|
}
|
|
|
|
ValidTransaction::with_tag_prefix("SlowClap")
|
|
.priority(T::UnsignedPriority::get())
|
|
.and_provides(authority)
|
|
.longevity(LOCK_BLOCK_EXPIRATION.saturated_into::<u64>())
|
|
.propagate(true)
|
|
.build()
|
|
} else {
|
|
InvalidTransaction::Call.into()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<T: Config> Pallet<T> {
|
|
fn treasury_account_id() -> T::AccountId {
|
|
T::TreasuryPalletId::get().into_account_truncating()
|
|
}
|
|
|
|
fn clap_if_possible(
|
|
claps: Vec<Clap<T::AccountId, NetworkIdOf<T>, BalanceOf<T>>>,
|
|
) -> DispatchResult {
|
|
let current_authorities = Authorities::<T>::get();
|
|
for clap in claps.iter() {
|
|
let Ok(mut clap_str) = serde_json::to_vec(&clap.companions) else {
|
|
continue;
|
|
};
|
|
clap_str.extend(clap.transaction_hash.to_fixed_bytes());
|
|
clap_str.extend(clap.network_id.encode());
|
|
let clap_hash = H256::from_slice(&keccak_256(&clap_str)[..]);
|
|
|
|
let Some(public) = current_authorities.get(clap.authority_index as usize) else {
|
|
continue;
|
|
};
|
|
|
|
|
|
let mut claps_in_session = AuthorityInfoInSession::<T>::get(&clap.session_index);
|
|
if let Some(_) = claps_in_session.get(clap.authority_index as usize) {
|
|
if claps_in_session[clap.authority_index as usize].disabled {
|
|
continue;
|
|
}
|
|
|
|
let received_clap = ReceivedClaps::<T>::get(&clap_hash, &public);
|
|
match (received_clap, clap.removed) {
|
|
(true, false) => ReceivedClaps::<T>::set(&clap_hash, &public, false),
|
|
(false, true) => ReceivedClaps::<T>::set(&clap_hash, &public, true),
|
|
_ => continue,
|
|
}
|
|
|
|
claps_in_session[clap.authority_index as usize].actions.saturating_inc();
|
|
AuthorityInfoInSession::<T>::set(&clap.session_index, claps_in_session);
|
|
|
|
Self::deposit_event(Event::<T>::Clapped {
|
|
authority_id: public.clone(),
|
|
network_id: clap.network_id,
|
|
clap_hash,
|
|
transaction_hash: clap.transaction_hash,
|
|
receiver: clap.receiver.clone(),
|
|
amount: clap.amount,
|
|
});
|
|
}
|
|
|
|
Self::applause_if_possible(clap_hash, &clap, current_authorities.clone())?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn applause_if_possible(
|
|
clap_hash: H256,
|
|
clap: &Clap<T::AccountId, NetworkIdOf<T>, BalanceOf<T>>,
|
|
current_authorities: WeakBoundedVec<T::AuthorityId, T::MaxAuthorities>,
|
|
) -> DispatchResult {
|
|
if !ApplausesForTransaction::<T>::get(&clap_hash) {
|
|
let clappers_len = ReceivedClaps::<T>::iter_prefix(&clap_hash)
|
|
.filter(|(authority, yes_vote)| current_authorities.contains(authority) && *yes_vote)
|
|
.count();
|
|
|
|
let enough_authorities = Perbill::from_rational(
|
|
clappers_len as u32,
|
|
current_authorities.len() as u32,
|
|
) > Perbill::from_percent(T::ApplauseThreshold::get());
|
|
|
|
if enough_authorities {
|
|
Self::reward_companions(
|
|
clap.network_id,
|
|
clap.receiver.clone(),
|
|
clap.amount,
|
|
clap.companions.clone(),
|
|
)?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn reward_companions(
|
|
network_id: NetworkIdOf<T>,
|
|
receiver: T::AccountId,
|
|
amount: BalanceOf<T>,
|
|
companions: BTreeMap<CompanionId, BalanceOf<T>>,
|
|
) -> DispatchResult {
|
|
let mut final_bridge_amount = amount;
|
|
let mut number_of_companions: u32 = 0;
|
|
|
|
let existential_balance = T::Currency::minimum_balance();
|
|
|
|
for (companion_id, companion_amount) in companions.iter() {
|
|
if final_bridge_amount < existential_balance { break; }
|
|
number_of_companions.saturating_inc();
|
|
CompanionDetails::<T>::mutate(companion_id, |maybe_stored_companion| {
|
|
match maybe_stored_companion {
|
|
Some(stored_companion) if (stored_companion.amount >= *companion_amount) => {
|
|
stored_companion.amount = stored_companion
|
|
.amount
|
|
.saturating_sub(*companion_amount);
|
|
if stored_companion.amount > existential_balance {
|
|
*maybe_stored_companion = Some(stored_companion.clone());
|
|
} else {
|
|
*maybe_stored_companion = None;
|
|
}
|
|
},
|
|
_ => {
|
|
final_bridge_amount = final_bridge_amount
|
|
.saturating_sub(*companion_amount);
|
|
},
|
|
}
|
|
});
|
|
}
|
|
|
|
let incoming_fee = match T::NetworkDataHandler::get(&network_id) {
|
|
Some(network_data) => network_data.incoming_fee,
|
|
None => 0,
|
|
};
|
|
|
|
let gatekeeper_fees = Perbill::from_parts(incoming_fee)
|
|
.mul_floor(final_bridge_amount);
|
|
|
|
let final_bridge_amount = final_bridge_amount
|
|
.saturating_sub(gatekeeper_fees);
|
|
|
|
if gatekeeper_fees >= existential_balance {
|
|
T::Currency::mint_into(
|
|
&Self::treasury_account_id(),
|
|
gatekeeper_fees,
|
|
)?;
|
|
}
|
|
|
|
if final_bridge_amount >= existential_balance {
|
|
T::Currency::mint_into(
|
|
&receiver,
|
|
final_bridge_amount,
|
|
)?;
|
|
}
|
|
|
|
Self::deposit_event(Event::<T>::Applaused {
|
|
network_id,
|
|
receiver,
|
|
received_amount: final_bridge_amount,
|
|
number_of_companions,
|
|
});
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn create_key(first: Vec<u8>, second: Vec<u8>) -> Vec<u8> {
|
|
let mut key = DB_PREFIX.to_vec();
|
|
key.extend(first);
|
|
key.extend(second);
|
|
key
|
|
}
|
|
|
|
fn start_slow_clapping(
|
|
block_number: BlockNumberFor<T>,
|
|
networks_len: usize,
|
|
) -> OffchainResult<T, impl Iterator<Item = OffchainResult<T, ()>>> {
|
|
let session_index = T::ValidatorSet::session_index();
|
|
let index = block_number.into().as_u128() % networks_len as u128;
|
|
let network_in_use = T::NetworkDataHandler::iter()
|
|
.nth(index as usize)
|
|
.expect("network should exist; qed");
|
|
|
|
let network_id = network_in_use.0;
|
|
let gatekeeper = network_in_use.1.gatekeeper;
|
|
let topic_name = network_in_use.1.topic_name;
|
|
|
|
let key = Self::create_key(network_id.encode(), b"endpoint".to_vec());
|
|
let rpc_endpoint = match StorageValueRef::persistent(&key).get() {
|
|
Ok(Some(endpoint)) => endpoint,
|
|
_ => network_in_use.1.default_endpoint,
|
|
};
|
|
|
|
let finality_delay =
|
|
network_in_use.1.finality_delay.unwrap_or(1u64);
|
|
|
|
Ok(Self::local_authorities().map(move |(authority_index, authority_key)| {
|
|
Self::do_evm_claps_or_save_block(
|
|
authority_index,
|
|
authority_key,
|
|
session_index,
|
|
network_id,
|
|
finality_delay,
|
|
gatekeeper.clone(),
|
|
topic_name.clone(),
|
|
rpc_endpoint.clone(),
|
|
)
|
|
}))
|
|
}
|
|
|
|
fn do_evm_claps_or_save_block(
|
|
authority_index: AuthIndex,
|
|
authority_key: T::AuthorityId,
|
|
session_index: SessionIndex,
|
|
network_id: NetworkIdOf<T>,
|
|
finality_delay: u64,
|
|
gatekeeper: Vec<u8>,
|
|
topic_name: Vec<u8>,
|
|
rpc_endpoint: Vec<u8>,
|
|
) -> OffchainResult<T, ()> {
|
|
let key = Self::create_key(network_id.encode(), b"lock".to_vec());
|
|
let mut network_lock = StorageLock::<BlockAndTime<Self>>::with_block_and_time_deadline(
|
|
&key,
|
|
LOCK_BLOCK_EXPIRATION,
|
|
rt_offchain::Duration::from_millis(LOCK_TIMEOUT_EXPIRATION),
|
|
);
|
|
|
|
network_lock
|
|
.try_lock()
|
|
.map_err(|_| OffchainErr::FailedToAcquireLock(network_id))?
|
|
.forget();
|
|
|
|
let key = Self::create_key(network_id.encode(), b"block".to_vec());
|
|
let mut evm_block_info = StorageValueRef::persistent(&key);
|
|
let evm_block: Option<u64> = match evm_block_info.get() {
|
|
Ok(option_block) => option_block,
|
|
_ => None,
|
|
};
|
|
|
|
let evm_response = Self::fetch_and_parse(
|
|
evm_block, finality_delay,
|
|
gatekeeper, topic_name, rpc_endpoint
|
|
)?;
|
|
|
|
match evm_response {
|
|
EvmResponseType::BlockNumber(evm_block) => {
|
|
let deviation = Self::random_u64_deviation(finality_delay);
|
|
let evm_start_block = evm_block.saturating_sub(deviation);
|
|
evm_block_info.set(&evm_start_block);
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🧐 New evm block #{:?} found for {:?} network",
|
|
evm_start_block,
|
|
network_id,
|
|
);
|
|
},
|
|
EvmResponseType::TransactionLogs(evm_logs) => {
|
|
if evm_logs.is_empty() {
|
|
return Err(OffchainErr::NoEvmLogsFound(network_id).into());
|
|
}
|
|
|
|
let evm_logs: Vec<_> = evm_logs
|
|
.iter()
|
|
.filter(|log| {
|
|
log.block_number.is_some() &&
|
|
log.transaction_hash.is_some() &&
|
|
log.topics.len() == 3 &&
|
|
log.data.len() <= COMPANIONS_LIMIT
|
|
})
|
|
.collect();
|
|
|
|
if evm_logs.is_empty() {
|
|
return Err(OffchainErr::OnlyPendingEvmLogs(network_id));
|
|
}
|
|
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🧐 {:?} evm logs found for network #{:?}",
|
|
evm_logs.len(),
|
|
network_id,
|
|
);
|
|
|
|
let mut claps: Vec<_> = evm_logs
|
|
.iter()
|
|
.map(|log| 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>>(),
|
|
companions: log
|
|
.data
|
|
.clone()
|
|
.into_iter()
|
|
.map(|(key, value)| (
|
|
key.saturated_into::<CompanionId>(),
|
|
value.saturated_into::<BalanceOf<T>>(),
|
|
))
|
|
.collect(),
|
|
transaction_hash: log
|
|
.transaction_hash
|
|
.clone()
|
|
.expect("tx hash exists; qed"),
|
|
block_number: log
|
|
.block_number
|
|
.expect("block number exists; qed"),
|
|
})
|
|
.collect();
|
|
|
|
claps.sort_by(|a, b| a.block_number.cmp(&b.block_number));
|
|
|
|
let maximum_claps = T::MaxNumberOfClaps::get() as usize;
|
|
claps.truncate(maximum_claps);
|
|
match claps.get(maximum_claps) {
|
|
Some(last_clap) => {
|
|
evm_block_info.set(&last_clap.block_number);
|
|
log::info!(
|
|
target: LOG_TARGET,
|
|
"🧐 New evm block #{:?} found for {:?} network",
|
|
last_clap.block_number,
|
|
network_id,
|
|
);
|
|
},
|
|
None => evm_block_info.clear(),
|
|
}
|
|
|
|
let signature = authority_key.sign(&claps.encode())
|
|
.ok_or(OffchainErr::FailedSigning)?;
|
|
let call = Call::slow_clap { claps, signature };
|
|
|
|
SubmitTransaction::<T, Call<T>>::submit_unsigned_transaction(call.into())
|
|
.map_err(|_| OffchainErr::SubmitTransaction)?;
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
fn random_u64_deviation(original: u64) -> u64 {
|
|
let seed = sp_io::offchain::random_seed();
|
|
let random = <u32>::decode(&mut TrailingZeroInput::new(seed.as_ref()))
|
|
.expect("input is padded with zeroes; qed");
|
|
|
|
let maximum = Perbill::one()
|
|
.saturating_div(
|
|
Perbill::from_parts(PERCENT_DIVISOR),
|
|
sp_runtime::Rounding::Down,
|
|
)
|
|
.deconstruct();
|
|
|
|
let random = Perbill::from_parts(random % maximum);
|
|
original.saturating_add(random.mul_ceil(original))
|
|
}
|
|
|
|
fn local_authorities() -> impl Iterator<Item = (u32, T::AuthorityId)> {
|
|
let authorities = Authorities::<T>::get();
|
|
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: Vec<u8>,
|
|
request_body: Vec<u8>,
|
|
) -> OffchainResult<T, Vec<u8>> {
|
|
let rpc_str = core::str::from_utf8(&rpc_endpoint)
|
|
.expect("rpc endpoint valid str; qed");
|
|
|
|
let 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_str, vec![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(
|
|
maybe_block: Option<u64>,
|
|
finality_delay: u64,
|
|
gatekeeper: Vec<u8>,
|
|
topic_name: Vec<u8>,
|
|
) -> Vec<u8> {
|
|
match maybe_block {
|
|
Some(to_block) => {
|
|
let from_block: u64 = to_block.saturating_sub(finality_delay);
|
|
let convert_number_to_hex_vector = |value: u64| -> Vec<u8> {
|
|
let mut r = Vec::new();
|
|
let mut value = value;
|
|
loop {
|
|
r.push((value % 10 + 48) as u8);
|
|
value /= 10;
|
|
if value == 0 { break; }
|
|
}
|
|
r.reverse();
|
|
r
|
|
};
|
|
|
|
let mut body = b"{\"id\":0,\"jsonrpc\":\"2.0\",\"method\":\"eth_getLogs\",\"params\":[{".to_vec();
|
|
body.extend(b"\"fromBlock\":".to_vec());
|
|
body.extend(convert_number_to_hex_vector(from_block));
|
|
body.extend(b",\"toBlock\":".to_vec());
|
|
body.extend(convert_number_to_hex_vector(to_block));
|
|
body.extend(b",\"address\":\"".to_vec());
|
|
body.extend(gatekeeper);
|
|
body.extend(b"\",\"topics\":[\"".to_vec());
|
|
body.extend(topic_name);
|
|
body.extend(b"\"]}]}".to_vec());
|
|
body
|
|
},
|
|
None => b"{\"id\":0,\"jsonrpc\":\"2.0\",\"method\":\"eth_blockNumber\"}".to_vec()
|
|
}.to_vec()
|
|
}
|
|
|
|
fn fetch_and_parse(
|
|
evm_block: Option<u64>,
|
|
finality_delay: u64,
|
|
gatekeeper: Vec<u8>,
|
|
topic_name: Vec<u8>,
|
|
rpc_endpoint: Vec<u8>,
|
|
) -> OffchainResult<T, EvmResponseType> {
|
|
let request_body = Self::prepare_request_body(
|
|
evm_block, finality_delay, gatekeeper, topic_name);
|
|
|
|
let resp_bytes = Self::fetch_from_remote(rpc_endpoint, request_body)?;
|
|
|
|
let resp_str = sp_std::str::from_utf8(&resp_bytes)
|
|
.map_err(|_| OffchainErr::HttpBytesParsingError)?;
|
|
|
|
let result: EvmResponse = serde_json::from_str(&resp_str)
|
|
.map_err(|_| OffchainErr::HttpJsonParsingError)?;
|
|
|
|
if result.error.is_some() {
|
|
return Err(OffchainErr::ErrorInEvmResponse);
|
|
}
|
|
|
|
Ok(result.result.ok_or(OffchainErr::ErrorInEvmResponse)?)
|
|
}
|
|
|
|
fn is_good_actor(
|
|
authority_index: usize,
|
|
session_index: SessionIndex,
|
|
average_claps: u32,
|
|
) -> bool {
|
|
let claps_in_session = AuthorityInfoInSession::<T>::get(session_index);
|
|
match claps_in_session.get(authority_index) {
|
|
Some(clap_in_session) => {
|
|
let number_of_claps = &clap_in_session.actions;
|
|
let authority_deviation = if *number_of_claps < average_claps {
|
|
Perbill::from_rational(*number_of_claps, average_claps)
|
|
} else { Perbill::from_rational(average_claps, *number_of_claps) };
|
|
authority_deviation < Perbill::from_percent(T::OffenceThreshold::get())
|
|
},
|
|
_ => false,
|
|
}
|
|
}
|
|
|
|
fn initialize_authorities(authorities: &[T::AuthorityId]) {
|
|
if !authorities.is_empty() {
|
|
assert!(Authorities::<T>::get().is_empty(), "Authorities are already initilized!");
|
|
let bounded_authorities = BoundedSlice::<'_, _, T::MaxAuthorities>::try_from(authorities)
|
|
.expect("more than the maximum number of clappers");
|
|
Authorities::<T>::put(bounded_authorities);
|
|
}
|
|
}
|
|
|
|
fn restart_clap_round(session_index: SessionIndex, length: usize) {
|
|
let empty_authority_info = SessionAuthorityInfo {
|
|
actions: 0u32,
|
|
disabled: false,
|
|
};
|
|
let empty_authorities_vec =
|
|
BoundedVec::<SessionAuthorityInfo, T::MaxAuthorityInfoInSession>::try_from(
|
|
vec![empty_authority_info; length])
|
|
.expect("authorities length should be correct");
|
|
AuthorityInfoInSession::<T>::set(session_index, empty_authorities_vec);
|
|
}
|
|
|
|
// #[cfg(test)]
|
|
// fn set_authorities(authorities: Vec<T::AuthorityId>) {
|
|
// let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::try_from(authorities)
|
|
// .expect("more than the maximum number of clappers");
|
|
// Authorities::<T>::put(&bounded_authorities);
|
|
// Self::restart_clap_round(T::ValidatorSet::session_index(), bounded_authorities.len());
|
|
// }
|
|
}
|
|
|
|
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);
|
|
Self::restart_clap_round(1, authorities.len());
|
|
}
|
|
|
|
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<_>>();
|
|
let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::force_from(
|
|
authorities,
|
|
Some(
|
|
"Warning: The session has more authorities than expected. \
|
|
A runtime configuration adjustment may be needed.",
|
|
),
|
|
);
|
|
let bounded_authorities_len = (&bounded_authorities).len();
|
|
Authorities::<T>::put(bounded_authorities);
|
|
Self::restart_clap_round(T::ValidatorSet::session_index(), bounded_authorities_len);
|
|
}
|
|
|
|
fn on_before_session_ending() {
|
|
let session_index = T::ValidatorSet::session_index();
|
|
let validators = T::ValidatorSet::validators();
|
|
let authorities = Authorities::<T>::get();
|
|
let claps_in_session = AuthorityInfoInSession::<T>::get(session_index);
|
|
|
|
let average_claps = claps_in_session
|
|
.iter()
|
|
.filter(|x| !x.disabled)
|
|
.fold(0u32, |acc, x| acc + x.actions)
|
|
.checked_div(claps_in_session.len() as u32)
|
|
.unwrap_or_default();
|
|
|
|
let offenders = validators
|
|
.into_iter()
|
|
.enumerate()
|
|
.filter(|(index, _)| !Self::is_good_actor(*index, session_index, average_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>::AllGood);
|
|
} else {
|
|
Self::deposit_event(Event::<T>::SomeTrottling { 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();
|
|
let mut claps_in_session = AuthorityInfoInSession::<T>::get(&session_index);
|
|
if let Some(_) = claps_in_session.get(validator_index as usize) {
|
|
claps_in_session[validator_index as usize].disabled = true;
|
|
AuthorityInfoInSession::<T>::set(&session_index, claps_in_session);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(RuntimeDebug, TypeInfo)]
|
|
#[cfg_attr(feature = "std", derive(Clone, PartialEq, Eq))]
|
|
pub struct ThrottlingOffence<Offender> {
|
|
/// Current session index in which we report the unresponsive validators.
|
|
pub session_index: SessionIndex,
|
|
/// The size pf the validator set in current session.
|
|
pub validator_set_count: u32,
|
|
/// Authorities that were unresponsive during the current session.
|
|
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()
|
|
}
|
|
}
|
|
}
|