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reward.rs
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reward.rs
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use crate::tests::util::{
calculate_reward, create_always_success_out_point, create_always_success_tx, dao_data,
start_chain, MockStore,
};
use ckb_chain_spec::consensus::{Consensus, ConsensusBuilder};
use ckb_dao_utils::genesis_dao_data;
use ckb_reward_calculator::RewardCalculator;
use ckb_shared::shared::Shared;
use ckb_store::ChainStore;
use ckb_test_chain_utils::always_success_cell;
use ckb_types::prelude::*;
use ckb_types::{
bytes::Bytes,
core::{
capacity_bytes, BlockBuilder, BlockView, Capacity, EpochNumberWithFraction, HeaderView,
ScriptHashType, TransactionBuilder, TransactionView, UncleBlockView,
},
packed::{
self, CellDep, CellInput, CellOutputBuilder, OutPoint, ProposalShortId, Script,
ScriptBuilder,
},
utilities::DIFF_TWO,
};
use std::sync::Arc;
const TX_FEE: Capacity = capacity_bytes!(10);
#[allow(clippy::int_plus_one)]
pub(crate) fn create_cellbase(
parent: &HeaderView,
miner_lock: Script,
reward_lock: Script,
reward: Option<Capacity>,
store: &MockStore,
consensus: &Consensus,
) -> TransactionView {
let number = parent.number() + 1;
let capacity = calculate_reward(store, consensus, parent);
let builder = TransactionBuilder::default()
.input(CellInput::new_cellbase_input(number))
.witness(miner_lock.into_witness());
if (parent.number() + 1) <= consensus.finalization_delay_length() {
builder.build()
} else {
builder
.output(
CellOutputBuilder::default()
.capacity(reward.unwrap_or(capacity).pack())
.lock(reward_lock)
.build(),
)
.output_data(Bytes::new().pack())
.build()
}
}
#[allow(clippy::too_many_arguments)]
pub(crate) fn gen_block(
parent_header: &HeaderView,
transactions: Vec<TransactionView>,
proposals: Vec<ProposalShortId>,
uncles: Vec<UncleBlockView>,
miner_lock: Script,
reward_lock: Script,
reward: Option<Capacity>,
shared: &Shared,
store: &MockStore,
) -> BlockView {
let number = parent_header.number() + 1;
let consensus = shared.consensus();
let cellbase = create_cellbase(
parent_header,
miner_lock,
reward_lock,
reward,
store,
consensus,
);
let mut txs = vec![cellbase];
txs.extend_from_slice(&transactions);
let dao = dao_data(consensus, parent_header, &txs, store, false);
let epoch = shared
.consensus()
.next_epoch_ext(parent_header, &shared.store().as_data_provider())
.unwrap()
.epoch();
let block = BlockBuilder::default()
.parent_hash(parent_header.hash())
.timestamp((parent_header.timestamp() + 20_000).pack())
.number(number.pack())
.compact_target(epoch.compact_target().pack())
.epoch(epoch.number_with_fraction(number).pack())
.dao(dao)
.transactions(txs)
.uncles(uncles)
.proposals(proposals)
.build();
store.insert_block(&block, consensus.genesis_epoch_ext());
block
}
pub(crate) fn create_transaction(parent: &TransactionView, index: u32) -> TransactionView {
let (_, _, always_success_script) = always_success_cell();
let always_success_out_point = create_always_success_out_point();
let input_cap: Capacity = parent
.outputs()
.get(0)
.expect("get output index 0")
.capacity()
.unpack();
TransactionBuilder::default()
.output(
CellOutputBuilder::default()
.capacity(input_cap.safe_sub(TX_FEE).unwrap().pack())
.lock(always_success_script.clone())
.build(),
)
.output_data(Bytes::new().pack())
.input(CellInput::new(OutPoint::new(parent.hash(), index), 0))
.cell_dep(
CellDep::new_builder()
.out_point(always_success_out_point)
.build(),
)
.build()
}
#[test]
fn finalize_reward() {
let (_, _, always_success_script) = always_success_cell();
let always_success_tx = create_always_success_tx();
let tx = TransactionBuilder::default()
.input(CellInput::new(OutPoint::null(), 0))
.output(
CellOutputBuilder::default()
.capacity(capacity_bytes!(5_000).pack())
.lock(always_success_script.clone())
.build(),
)
.output_data(Bytes::new().pack())
.build();
let dao = genesis_dao_data(vec![&always_success_tx, &tx]).unwrap();
let genesis_block = BlockBuilder::default()
.transaction(always_success_tx)
.transaction(tx.clone())
.compact_target(DIFF_TWO.pack())
.dao(dao)
.build();
let consensus = ConsensusBuilder::default()
.cellbase_maturity(EpochNumberWithFraction::new(0, 0, 1))
.genesis_block(genesis_block)
.build();
let (chain_controller, shared, mut parent) = start_chain(Some(consensus));
let mock_store = MockStore::new(&parent, shared.store());
let mut txs = Vec::with_capacity(16);
let mut tx_parent = tx;
for _i in 0..16 {
tx_parent = create_transaction(&tx_parent, 0);
txs.push(tx_parent.clone());
}
let ids: Vec<_> = txs.iter().map(TransactionView::proposal_short_id).collect();
let mut blocks = Vec::with_capacity(24);
let bob_args: packed::Bytes = Bytes::from(b"b0b".to_vec()).pack();
let bob = ScriptBuilder::default()
.args(bob_args)
.code_hash(always_success_script.code_hash())
.hash_type(ScriptHashType::Data.into())
.build();
let alice_args: packed::Bytes = Bytes::from(b"a11ce".to_vec()).pack();
let alice = ScriptBuilder::default()
.args(alice_args)
.code_hash(always_success_script.code_hash())
.hash_type(ScriptHashType::Data.into())
.build();
for i in 1..23 {
let proposals = if i == 12 {
ids.iter().take(8).cloned().collect()
} else if i == 13 {
ids.clone()
} else {
vec![]
};
let miner_lock = if i == 12 {
bob.clone()
} else if i == 13 {
alice.clone()
} else {
always_success_script.clone()
};
let block_txs = if i == 22 {
txs.iter().take(12).cloned().collect()
} else {
vec![]
};
let block = gen_block(
&parent,
block_txs,
proposals,
vec![],
miner_lock,
always_success_script.clone(),
None,
&shared,
&mock_store,
);
parent = block.header().clone();
chain_controller
.process_block(Arc::new(block.clone()))
.expect("process block ok");
blocks.push(block);
}
let (target, reward) = RewardCalculator::new(shared.consensus(), shared.snapshot().as_ref())
.block_reward_to_finalize(&blocks[21].header())
.unwrap();
assert_eq!(target, bob);
// bob proposed 8 txs in 12, committed in 22
// get all proposal reward
let block_reward = calculate_reward(&mock_store, shared.consensus(), &parent);
let bob_reward = TX_FEE
.safe_mul_ratio(shared.consensus().proposer_reward_ratio())
.unwrap()
.safe_mul(8u8) // 8 txs
.unwrap()
.safe_add(block_reward)
.unwrap();
assert_eq!(reward.total, bob_reward,);
let block = gen_block(
&parent,
txs.iter().skip(12).cloned().collect(),
vec![],
vec![],
always_success_script.clone(),
target,
Some(bob_reward),
&shared,
&mock_store,
);
parent = block.header();
chain_controller
.process_block(Arc::new(block.clone()))
.expect("process block ok");
let (target, reward) = RewardCalculator::new(shared.consensus(), shared.snapshot().as_ref())
.block_reward_to_finalize(&block.header())
.unwrap();
assert_eq!(target, alice);
// alice proposed 16 txs in block 13, committed in 22, 23
// but bob proposed 8 txs earlier
// get 8 proposal reward
let block_reward = calculate_reward(&mock_store, shared.consensus(), &parent);
let alice_reward = TX_FEE
.safe_mul_ratio(shared.consensus().proposer_reward_ratio())
.unwrap()
.safe_mul(8u8)
.unwrap()
.safe_add(block_reward)
.unwrap();
assert_eq!(reward.total, alice_reward);
let block = gen_block(
&parent,
vec![],
vec![],
vec![],
always_success_script.clone(),
target,
Some(alice_reward),
&shared,
&mock_store,
);
chain_controller
.process_block(Arc::new(block))
.expect("process block ok");
}