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Refactor: move compute budget runtime logic into solana-program-runtime (#22543)

This commit is contained in:
Justin Starry 2022-01-17 20:48:00 +08:00 committed by GitHub
parent 5e5cdf397c
commit cc76a73c49
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8 changed files with 316 additions and 292 deletions
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292
program-runtime/src/compute_budget.rs Normal file
View File

@ -0,0 +1,292 @@
use {
solana_sdk::{
borsh::try_from_slice_unchecked,
compute_budget::{self, ComputeBudgetInstruction},
entrypoint::HEAP_LENGTH as MIN_HEAP_FRAME_BYTES,
feature_set::{requestable_heap_size, FeatureSet},
instruction::InstructionError,
transaction::{SanitizedTransaction, TransactionError},
},
std::sync::Arc,
};
const MAX_UNITS: u32 = 1_000_000;
const MAX_HEAP_FRAME_BYTES: u32 = 256 * 1024;
#[cfg(RUSTC_WITH_SPECIALIZATION)]
impl ::solana_frozen_abi::abi_example::AbiExample for ComputeBudget {
fn example() -> Self {
// ComputeBudget is not Serialize so just rely on Default.
ComputeBudget::default()
}
}
#[derive(Clone, Copy, Debug, PartialEq)]
pub struct ComputeBudget {
/// Number of compute units that an instruction is allowed. Compute units
/// are consumed by program execution, resources they use, etc...
pub max_units: u64,
/// Number of compute units consumed by a log_u64 call
pub log_64_units: u64,
/// Number of compute units consumed by a create_program_address call
pub create_program_address_units: u64,
/// Number of compute units consumed by an invoke call (not including the cost incurred by
/// the called program)
pub invoke_units: u64,
/// Maximum cross-program invocation depth allowed
pub max_invoke_depth: usize,
/// Base number of compute units consumed to call SHA256
pub sha256_base_cost: u64,
/// Incremental number of units consumed by SHA256 (based on bytes)
pub sha256_byte_cost: u64,
/// Maximum BPF to BPF call depth
pub max_call_depth: usize,
/// Size of a stack frame in bytes, must match the size specified in the LLVM BPF backend
pub stack_frame_size: usize,
/// Number of compute units consumed by logging a `Pubkey`
pub log_pubkey_units: u64,
/// Maximum cross-program invocation instruction size
pub max_cpi_instruction_size: usize,
/// Number of account data bytes per conpute unit charged during a cross-program invocation
pub cpi_bytes_per_unit: u64,
/// Base number of compute units consumed to get a sysvar
pub sysvar_base_cost: u64,
/// Number of compute units consumed to call secp256k1_recover
pub secp256k1_recover_cost: u64,
/// Number of compute units consumed to do a syscall without any work
pub syscall_base_cost: u64,
/// Number of compute units consumed to call zktoken_crypto_op
pub zk_token_elgamal_op_cost: u64,
/// Optional program heap region size, if `None` then loader default
pub heap_size: Option<usize>,
/// Number of compute units per additional 32k heap above the default (~.5
/// us per 32k at 15 units/us rounded up)
pub heap_cost: u64,
/// Memory operation syscall base cost
pub mem_op_base_cost: u64,
}
impl Default for ComputeBudget {
fn default() -> Self {
Self::new()
}
}
impl ComputeBudget {
pub fn new() -> Self {
ComputeBudget {
max_units: 200_000,
log_64_units: 100,
create_program_address_units: 1500,
invoke_units: 1000,
max_invoke_depth: 4,
sha256_base_cost: 85,
sha256_byte_cost: 1,
max_call_depth: 64,
stack_frame_size: 4_096,
log_pubkey_units: 100,
max_cpi_instruction_size: 1280, // IPv6 Min MTU size
cpi_bytes_per_unit: 250, // ~50MB at 200,000 units
sysvar_base_cost: 100,
secp256k1_recover_cost: 25_000,
syscall_base_cost: 100,
zk_token_elgamal_op_cost: 25_000,
heap_size: None,
heap_cost: 8,
mem_op_base_cost: 15,
}
}
pub fn process_transaction(
&mut self,
tx: &SanitizedTransaction,
feature_set: Arc<FeatureSet>,
) -> Result<(), TransactionError> {
let error = TransactionError::InstructionError(0, InstructionError::InvalidInstructionData);
// Compute budget instruction must be in the 1st 3 instructions (avoid
// nonce marker), otherwise ignored
for (program_id, instruction) in tx.message().program_instructions_iter().take(3) {
if compute_budget::check_id(program_id) {
match try_from_slice_unchecked(&instruction.data) {
Ok(ComputeBudgetInstruction::RequestUnits(units)) => {
if units > MAX_UNITS {
return Err(error);
}
self.max_units = units as u64;
}
Ok(ComputeBudgetInstruction::RequestHeapFrame(bytes)) => {
if !feature_set.is_active(&requestable_heap_size::id())
|| bytes > MAX_HEAP_FRAME_BYTES
|| bytes < MIN_HEAP_FRAME_BYTES as u32
|| bytes % 1024 != 0
{
return Err(error);
}
self.heap_size = Some(bytes as usize);
}
_ => return Err(error),
}
}
}
Ok(())
}
}
#[cfg(test)]
mod tests {
use {
super::*,
solana_sdk::{
hash::Hash, instruction::Instruction, message::Message, pubkey::Pubkey,
signature::Keypair, signer::Signer, transaction::Transaction,
},
};
macro_rules! test {
( $instructions: expr, $expected_error: expr, $expected_budget: expr ) => {
let payer_keypair = Keypair::new();
let tx = SanitizedTransaction::from_transaction_for_tests(Transaction::new(
&[&payer_keypair],
Message::new($instructions, Some(&payer_keypair.pubkey())),
Hash::default(),
));
let feature_set = Arc::new(FeatureSet::all_enabled());
let mut compute_budget = ComputeBudget::default();
let result = compute_budget.process_transaction(&tx, feature_set);
assert_eq!($expected_error as Result<(), TransactionError>, result);
assert_eq!(compute_budget, $expected_budget);
};
}
#[test]
fn test_process_transaction() {
// Units
test!(&[], Ok(()), ComputeBudget::default());
test!(
&[
ComputeBudgetInstruction::request_units(1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Ok(()),
ComputeBudget {
max_units: 1,
..ComputeBudget::default()
}
);
test!(
&[
ComputeBudgetInstruction::request_units(MAX_UNITS + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_units(MAX_UNITS),
],
Ok(()),
ComputeBudget {
max_units: MAX_UNITS as u64,
..ComputeBudget::default()
}
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_units(1),
],
Ok(()),
ComputeBudget::default()
);
// HeapFrame
test!(&[], Ok(()), ComputeBudget::default());
test!(
&[
ComputeBudgetInstruction::request_heap_frame(40 * 1024),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Ok(()),
ComputeBudget {
heap_size: Some(40 * 1024),
..ComputeBudget::default()
}
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(40 * 1024 + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(31 * 1024),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES),
],
Ok(()),
ComputeBudget {
heap_size: Some(MAX_HEAP_FRAME_BYTES as usize),
..ComputeBudget::default()
}
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(1), // ignored
],
Ok(()),
ComputeBudget::default()
);
// Combined
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES),
ComputeBudgetInstruction::request_units(MAX_UNITS),
],
Ok(()),
ComputeBudget {
max_units: MAX_UNITS as u64,
heap_size: Some(MAX_HEAP_FRAME_BYTES as usize),
..ComputeBudget::default()
}
);
}
}

2
program-runtime/src/invoke_context.rs
View File

@ -1,6 +1,7 @@
use {
crate::{
accounts_data_meter::AccountsDataMeter,
compute_budget::ComputeBudget,
ic_logger_msg, ic_msg,
instruction_recorder::InstructionRecorder,
log_collector::LogCollector,
@ -13,7 +14,6 @@ use {
solana_sdk::{
account::{AccountSharedData, ReadableAccount},
bpf_loader_upgradeable::{self, UpgradeableLoaderState},
compute_budget::ComputeBudget,
feature_set::{
cap_accounts_data_len, do_support_realloc, neon_evm_compute_budget,
reject_empty_instruction_without_program, remove_native_loader, requestable_heap_size,

1
program-runtime/src/lib.rs
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@ -1,6 +1,7 @@
#![cfg_attr(RUSTC_WITH_SPECIALIZATION, feature(min_specialization))]
pub mod accounts_data_meter;
pub mod compute_budget;
pub mod instruction_recorder;
pub mod invoke_context;
pub mod log_collector;

4
program-test/src/lib.rs
View File

@ -10,7 +10,8 @@ use {
solana_banks_client::start_client,
solana_banks_server::banks_server::start_local_server,
solana_program_runtime::{
ic_msg, invoke_context::ProcessInstructionWithContext, stable_log, timings::ExecuteTimings,
compute_budget::ComputeBudget, ic_msg, invoke_context::ProcessInstructionWithContext,
stable_log, timings::ExecuteTimings,
},
solana_runtime::{
bank::Bank,
@ -23,7 +24,6 @@ use {
account::{Account, AccountSharedData, ReadableAccount, WritableAccount},
account_info::AccountInfo,
clock::Slot,
compute_budget::ComputeBudget,
entrypoint::{ProgramResult, SUCCESS},
fee_calculator::{FeeCalculator, FeeRateGovernor},
genesis_config::{ClusterType, GenesisConfig},

24
programs/bpf/tests/programs.rs
View File

@ -17,7 +17,10 @@ use solana_bpf_loader_program::{
use solana_bpf_rust_invoke::instructions::*;
use solana_bpf_rust_realloc::instructions::*;
use solana_bpf_rust_realloc_invoke::instructions::*;
use solana_program_runtime::{invoke_context::with_mock_invoke_context, timings::ExecuteTimings};
use solana_program_runtime::{
compute_budget::ComputeBudget, invoke_context::with_mock_invoke_context,
timings::ExecuteTimings,
};
use solana_rbpf::{
elf::Executable,
static_analysis::Analysis,
@ -41,7 +44,7 @@ use solana_sdk::{
bpf_loader, bpf_loader_deprecated, bpf_loader_upgradeable,
client::SyncClient,
clock::MAX_PROCESSING_AGE,
compute_budget::{ComputeBudget, ComputeBudgetInstruction},
compute_budget::ComputeBudgetInstruction,
entrypoint::{MAX_PERMITTED_DATA_INCREASE, SUCCESS},
instruction::{AccountMeta, CompiledInstruction, Instruction, InstructionError},
loader_instruction,
@ -226,13 +229,16 @@ fn run_program(name: &str) -> u64 {
let mut instruction_count = 0;
let mut tracer = None;
for i in 0..2 {
invoke_context.transaction_context.set_return_data(
*invoke_context
.transaction_context
.get_program_key()
.unwrap(),
Vec::new(),
).unwrap();
invoke_context
.transaction_context
.set_return_data(
*invoke_context
.transaction_context
.get_program_key()
.unwrap(),
Vec::new(),
)
.unwrap();
let mut parameter_bytes = parameter_bytes.clone();
{
let mut vm = create_vm(

2
runtime/src/bank.rs
View File

@ -74,6 +74,7 @@ use {
solana_measure::measure::Measure,
solana_metrics::{inc_new_counter_debug, inc_new_counter_info},
solana_program_runtime::{
compute_budget::ComputeBudget,
instruction_recorder::InstructionRecorder,
invoke_context::{
BuiltinProgram, Executor, Executors, ProcessInstructionWithContext, TransactionExecutor,
@ -93,7 +94,6 @@ use {
INITIAL_RENT_EPOCH, MAX_PROCESSING_AGE, MAX_RECENT_BLOCKHASHES,
MAX_TRANSACTION_FORWARDING_DELAY, SECONDS_PER_DAY,
},
compute_budget::ComputeBudget,
ed25519_program,
epoch_info::EpochInfo,
epoch_schedule::EpochSchedule,

2
runtime/src/message_processor.rs
View File

@ -2,6 +2,7 @@ use {
serde::{Deserialize, Serialize},
solana_measure::measure::Measure,
solana_program_runtime::{
compute_budget::ComputeBudget,
instruction_recorder::InstructionRecorder,
invoke_context::{BuiltinProgram, Executors, InvokeContext},
log_collector::LogCollector,
@ -10,7 +11,6 @@ use {
},
solana_sdk::{
account::WritableAccount,
compute_budget::ComputeBudget,
feature_set::{prevent_calling_precompiles_as_programs, FeatureSet},
hash::Hash,
message::SanitizedMessage,

281
sdk/src/compute_budget.rs
View File

@ -1,22 +1,12 @@
#![cfg(feature = "full")]
use {
crate::{
borsh::try_from_slice_unchecked,
entrypoint::HEAP_LENGTH as MIN_HEAP_FRAME_BYTES,
feature_set::{requestable_heap_size, FeatureSet},
instruction::{Instruction, InstructionError},
transaction::{SanitizedTransaction, TransactionError},
},
crate::instruction::Instruction,
borsh::{BorshDeserialize, BorshSchema, BorshSerialize},
std::sync::Arc,
};
crate::declare_id!("ComputeBudget111111111111111111111111111111");
const MAX_UNITS: u32 = 1_000_000;
const MAX_HEAP_FRAME_BYTES: u32 = 256 * 1024;
/// Compute Budget Instructions
#[derive(
Serialize,
@ -39,11 +29,13 @@ pub enum ComputeBudgetInstruction {
/// applies to each program executed, including all calls to CPIs.
RequestHeapFrame(u32),
}
impl ComputeBudgetInstruction {
/// Create a `ComputeBudgetInstruction::RequestUnits` `Instruction`
pub fn request_units(units: u32) -> Instruction {
Instruction::new_with_borsh(id(), &ComputeBudgetInstruction::RequestUnits(units), vec![])
}
/// Create a `ComputeBudgetInstruction::RequestHeapFrame` `Instruction`
pub fn request_heap_frame(bytes: u32) -> Instruction {
Instruction::new_with_borsh(
@ -53,270 +45,3 @@ impl ComputeBudgetInstruction {
)
}
}
#[derive(Clone, Copy, Debug, AbiExample, PartialEq)]
pub struct ComputeBudget {
/// Number of compute units that an instruction is allowed. Compute units
/// are consumed by program execution, resources they use, etc...
pub max_units: u64,
/// Number of compute units consumed by a log_u64 call
pub log_64_units: u64,
/// Number of compute units consumed by a create_program_address call
pub create_program_address_units: u64,
/// Number of compute units consumed by an invoke call (not including the cost incurred by
/// the called program)
pub invoke_units: u64,
/// Maximum cross-program invocation depth allowed
pub max_invoke_depth: usize,
/// Base number of compute units consumed to call SHA256
pub sha256_base_cost: u64,
/// Incremental number of units consumed by SHA256 (based on bytes)
pub sha256_byte_cost: u64,
/// Maximum BPF to BPF call depth
pub max_call_depth: usize,
/// Size of a stack frame in bytes, must match the size specified in the LLVM BPF backend
pub stack_frame_size: usize,
/// Number of compute units consumed by logging a `Pubkey`
pub log_pubkey_units: u64,
/// Maximum cross-program invocation instruction size
pub max_cpi_instruction_size: usize,
/// Number of account data bytes per conpute unit charged during a cross-program invocation
pub cpi_bytes_per_unit: u64,
/// Base number of compute units consumed to get a sysvar
pub sysvar_base_cost: u64,
/// Number of compute units consumed to call secp256k1_recover
pub secp256k1_recover_cost: u64,
/// Number of compute units consumed to do a syscall without any work
pub syscall_base_cost: u64,
/// Number of compute units consumed to call zktoken_crypto_op
pub zk_token_elgamal_op_cost: u64,
/// Optional program heap region size, if `None` then loader default
pub heap_size: Option<usize>,
/// Number of compute units per additional 32k heap above the default (~.5
/// us per 32k at 15 units/us rounded up)
pub heap_cost: u64,
/// Memory operation syscall base cost
pub mem_op_base_cost: u64,
}
impl Default for ComputeBudget {
fn default() -> Self {
Self::new()
}
}
impl ComputeBudget {
pub fn new() -> Self {
ComputeBudget {
max_units: 200_000,
log_64_units: 100,
create_program_address_units: 1500,
invoke_units: 1000,
max_invoke_depth: 4,
sha256_base_cost: 85,
sha256_byte_cost: 1,
max_call_depth: 64,
stack_frame_size: 4_096,
log_pubkey_units: 100,
max_cpi_instruction_size: 1280, // IPv6 Min MTU size
cpi_bytes_per_unit: 250, // ~50MB at 200,000 units
sysvar_base_cost: 100,
secp256k1_recover_cost: 25_000,
syscall_base_cost: 100,
zk_token_elgamal_op_cost: 25_000,
heap_size: None,
heap_cost: 8,
mem_op_base_cost: 15,
}
}
pub fn process_transaction(
&mut self,
tx: &SanitizedTransaction,
feature_set: Arc<FeatureSet>,
) -> Result<(), TransactionError> {
let error = TransactionError::InstructionError(0, InstructionError::InvalidInstructionData);
// Compute budget instruction must be in the 1st 3 instructions (avoid
// nonce marker), otherwise ignored
for (program_id, instruction) in tx.message().program_instructions_iter().take(3) {
if check_id(program_id) {
match try_from_slice_unchecked(&instruction.data) {
Ok(ComputeBudgetInstruction::RequestUnits(units)) => {
if units > MAX_UNITS {
return Err(error);
}
self.max_units = units as u64;
}
Ok(ComputeBudgetInstruction::RequestHeapFrame(bytes)) => {
if !feature_set.is_active(&requestable_heap_size::id())
|| bytes > MAX_HEAP_FRAME_BYTES
|| bytes < MIN_HEAP_FRAME_BYTES as u32
|| bytes % 1024 != 0
{
return Err(error);
}
self.heap_size = Some(bytes as usize);
}
_ => return Err(error),
}
}
}
Ok(())
}
}
#[cfg(test)]
mod tests {
use {
super::*,
crate::{
hash::Hash, message::Message, pubkey::Pubkey, signature::Keypair, signer::Signer,
transaction::Transaction,
},
};
macro_rules! test {
( $instructions: expr, $expected_error: expr, $expected_budget: expr ) => {
let payer_keypair = Keypair::new();
let tx = SanitizedTransaction::from_transaction_for_tests(Transaction::new(
&[&payer_keypair],
Message::new($instructions, Some(&payer_keypair.pubkey())),
Hash::default(),
));
let feature_set = Arc::new(FeatureSet::all_enabled());
let mut compute_budget = ComputeBudget::default();
let result = compute_budget.process_transaction(&tx, feature_set);
assert_eq!($expected_error as Result<(), TransactionError>, result);
assert_eq!(compute_budget, $expected_budget);
};
}
#[test]
fn test_process_transaction() {
// Units
test!(&[], Ok(()), ComputeBudget::default());
test!(
&[
ComputeBudgetInstruction::request_units(1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Ok(()),
ComputeBudget {
max_units: 1,
..ComputeBudget::default()
}
);
test!(
&[
ComputeBudgetInstruction::request_units(MAX_UNITS + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_units(MAX_UNITS),
],
Ok(()),
ComputeBudget {
max_units: MAX_UNITS as u64,
..ComputeBudget::default()
}
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_units(1),
],
Ok(()),
ComputeBudget::default()
);
// HeapFrame
test!(&[], Ok(()), ComputeBudget::default());
test!(
&[
ComputeBudgetInstruction::request_heap_frame(40 * 1024),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Ok(()),
ComputeBudget {
heap_size: Some(40 * 1024),
..ComputeBudget::default()
}
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(40 * 1024 + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(31 * 1024),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES + 1),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
],
Err(TransactionError::InstructionError(
0,
InstructionError::InvalidInstructionData,
)),
ComputeBudget::default()
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES),
],
Ok(()),
ComputeBudget {
heap_size: Some(MAX_HEAP_FRAME_BYTES as usize),
..ComputeBudget::default()
}
);
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(1), // ignored
],
Ok(()),
ComputeBudget::default()
);
// Combined
test!(
&[
Instruction::new_with_bincode(Pubkey::new_unique(), &0, vec![]),
ComputeBudgetInstruction::request_heap_frame(MAX_HEAP_FRAME_BYTES),
ComputeBudgetInstruction::request_units(MAX_UNITS),
],
Ok(()),
ComputeBudget {
max_units: MAX_UNITS as u64,
heap_size: Some(MAX_HEAP_FRAME_BYTES as usize),
..ComputeBudget::default()
}
);
}
}