grassrootseconomics/openethereum
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State diffing.

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This commit is contained in:
Gav Wood 2016-01-13 18:37:09 +01:00
parent 5ba76d767e
commit 311aa5c442
3 changed files with 173 additions and 29 deletions
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1
Cargo.toml
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@ -18,6 +18,7 @@ rust-crypto = "0.2.34"
time = "0.1"
#interpolate_idents = { git = "https://github.com/SkylerLipthay/interpolate_idents" }
evmjit = { path = "rust-evmjit", optional = true }
itertools = "0.4"
[features]
default = ["jit"]

193
src/account.rs
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@ -1,4 +1,5 @@
use util::*;
use itertools::Itertools;
pub const SHA3_EMPTY: H256 = H256( [0xc5, 0xd2, 0x46, 0x01, 0x86, 0xf7, 0x23, 0x3c, 0x92, 0x7e, 0x7d, 0xb2, 0xdc, 0xc7, 0x03, 0xc0, 0xe5, 0x00, 0xb6, 0x53, 0xca, 0x82, 0x27, 0x3b, 0x7b, 0xfa, 0xd8, 0x04, 0x5d, 0x85, 0xa4, 0x70] );
@ -19,6 +20,12 @@ impl<T> Diff<T> where T: Eq {
pub fn post(&self) -> &T { match self.post_opt { Some(ref x) => x, None => &self.pre } }
}
impl<T> From<T> for Diff<T> where T: Eq {
fn from(t: T) -> Diff<T> {
Diff::one(t)
}
}
#[derive(Debug,Clone,PartialEq,Eq)]
/// Genesis account data. Does not have a DB overlay cache.
pub struct PodAccount {
@ -31,7 +38,7 @@ pub struct PodAccount {
}
#[derive(Debug,Clone,PartialEq,Eq)]
pub struct PodAccountDiff {
pub struct AccountDiff {
pub exists: Diff<bool>,
pub balance: Option<Diff<U256>>,
pub nonce: Option<Diff<U256>>,
@ -39,25 +46,23 @@ pub struct PodAccountDiff {
pub storage: BTreeMap<H256, Diff<H256>>,
}
type StateDiff = BTreeMap<Address, PodAccountDiff>;
pub type StateDiff = BTreeMap<Address, AccountDiff>;
pub fn diff(pre: &Option<PodAccount>, post: &Option<PodAccount>) -> Option<PodAccountDiff> {
pub fn pod_diff(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<AccountDiff> {
match (pre, post) {
(&Some(ref x), &None) | (&None, &Some(ref x)) => Some(PodAccountDiff {
(Some(x), None) | (None, Some(x)) => Some(AccountDiff {
exists: Diff::new(pre.is_some(), post.is_some()),
balance: Diff::one_opt(x.balance.clone()),
nonce: Diff::one_opt(x.nonce.clone()),
code: Diff::one_opt(x.code.clone()),
storage: x.storage.iter().fold(BTreeMap::new(), |mut m, (k, v)| {m.insert(k.clone(), Diff::one(v.clone())); m})
}),
(&Some(ref pre), &Some(ref post)) => {
let pre_keys: BTreeSet<_> = pre.storage.keys().collect();
let post_keys: BTreeSet<_> = post.storage.keys().collect();
let storage: Vec<_> = pre_keys.union(&post_keys)
(Some(pre), Some(post)) => {
let storage: Vec<_> = pre.storage.keys().merge(post.storage.keys())
.filter(|k| pre.storage.get(k).unwrap_or(&H256::new()) != post.storage.get(k).unwrap_or(&H256::new()))
.collect();
if pre.balance != post.balance || pre.nonce != post.nonce || pre.code != post.code || storage.len() > 0 {
Some(PodAccountDiff {
Some(AccountDiff {
exists: Diff::one(true),
balance: Diff::new_opt(pre.balance.clone(), post.balance.clone()),
nonce: Diff::new_opt(pre.nonce.clone(), post.nonce.clone()),
@ -76,24 +81,164 @@ pub fn diff(pre: &Option<PodAccount>, post: &Option<PodAccount>) -> Option<PodAc
}
}
pub fn pod_map_diff(pre: &BTreeMap<Address, PodAccount>, post: &BTreeMap<Address, PodAccount>) -> StateDiff {
pre.keys()
.merge(post.keys())
.filter_map(|acc| pod_diff(pre.get(acc), post.get(acc)).map(|d|(acc.clone(), d)))
.collect::<BTreeMap<_, _>>()
}
macro_rules! map {
( $( $x:expr => $y:expr ),* ) => {
vec![ $( ($x, $y) ),* ].into_iter().collect::<BTreeMap<_, _>>()
}
}
macro_rules! x {
( $x:expr ) => {
From::from($x)
}
}
macro_rules! xx {
( $x:expr ) => {
From::from(From::from($x))
}
}
#[test]
fn state_diff_create_delete() {
let a = map![
x!(1) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
}
];
assert_eq!(pod_map_diff(&a, &map![]), map![
x!(1) => AccountDiff{
exists: Diff::new(true, false),
balance: Diff::one_opt(x!(69)),
nonce: Diff::one_opt(x!(0)),
code: Diff::one_opt(vec![]),
storage: map![],
}
]);
assert_eq!(pod_map_diff(&map![], &a), map![
x!(1) => AccountDiff{
exists: Diff::new(false, true),
balance: Diff::one_opt(x!(69)),
nonce: Diff::one_opt(x!(0)),
code: Diff::one_opt(vec![]),
storage: map![],
}
]);
}
#[test]
fn state_diff_cretae_delete_with_unchanged() {
let a = map![
x!(1) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
}
];
let b = map![
x!(1) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
},
x!(2) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
}
];
assert_eq!(pod_map_diff(&a, &b), map![
x!(2) => AccountDiff{
exists: Diff::new(false, true),
balance: Diff::one_opt(x!(69)),
nonce: Diff::one_opt(x!(0)),
code: Diff::one_opt(vec![]),
storage: map![],
}
]);
assert_eq!(pod_map_diff(&b, &a), map![
x!(2) => AccountDiff{
exists: Diff::new(true, false),
balance: Diff::one_opt(x!(69)),
nonce: Diff::one_opt(x!(0)),
code: Diff::one_opt(vec![]),
storage: map![],
}
]);
}
#[test]
fn state_diff_change_with_unchanged() {
let a = map![
x!(1) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
},
x!(2) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
}
];
let b = map![
x!(1) => PodAccount{
balance: x!(69),
nonce: x!(1),
code: vec![],
storage: map![]
},
x!(2) => PodAccount{
balance: x!(69),
nonce: x!(0),
code: vec![],
storage: map![]
}
];
assert_eq!(pod_map_diff(&a, &b), map![
x!(1) => AccountDiff{
exists: Diff::one(true),
balance: None,
nonce: Diff::new_opt(x!(0), x!(1)),
code: None,
storage: map![],
}
]);
}
#[test]
fn account_diff_existence() {
let a = Some(PodAccount{balance: U256::from(69u64), nonce: U256::zero(), code: vec![], storage: BTreeMap::new()});
assert_eq!(diff(&a, &a), None);
assert_eq!(diff(&None, &a), Some(PodAccountDiff{
let a = PodAccount{balance: x!(69), nonce: x!(0), code: vec![], storage: map![]};
assert_eq!(pod_diff(Some(&a), Some(&a)), None);
assert_eq!(pod_diff(None, Some(&a)), Some(AccountDiff{
exists: Diff::new(false, true),
balance: Diff::one_opt(U256::from(69u64)),
nonce: Diff::one_opt(U256::zero()),
balance: Diff::one_opt(x!(69)),
nonce: Diff::one_opt(x!(0)),
code: Diff::one_opt(vec![]),
storage: BTreeMap::new(),
storage: map![],
}));
}
#[test]
fn account_diff_basic() {
let a = Some(PodAccount{balance: U256::from(69u64), nonce: U256::zero(), code: vec![], storage: BTreeMap::new()});
let b = Some(PodAccount{balance: U256::from(42u64), nonce: U256::from(1u64), code: vec![], storage: BTreeMap::new()});
assert_eq!(diff(&a, &b), Some(PodAccountDiff {
let a = PodAccount{balance: U256::from(69u64), nonce: U256::zero(), code: vec![], storage: BTreeMap::new()};
let b = PodAccount{balance: U256::from(42u64), nonce: U256::from(1u64), code: vec![], storage: BTreeMap::new()};
assert_eq!(pod_diff(Some(&a), Some(&b)), Some(AccountDiff {
exists: Diff::one(true),
balance: Diff::new_opt(U256::from(69u64), U256::from(42u64)),
nonce: Diff::new_opt(U256::zero(), U256::from(1u64)),
@ -104,9 +249,9 @@ fn account_diff_basic() {
#[test]
fn account_diff_code() {
let a = Some(PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: BTreeMap::new()});
let b = Some(PodAccount{balance: U256::zero(), nonce: U256::from(1u64), code: vec![0x00u8], storage: BTreeMap::new()});
assert_eq!(diff(&a, &b), Some(PodAccountDiff {
let a = PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: BTreeMap::new()};
let b = PodAccount{balance: U256::zero(), nonce: U256::from(1u64), code: vec![0x00u8], storage: BTreeMap::new()};
assert_eq!(pod_diff(Some(&a), Some(&b)), Some(AccountDiff {
exists: Diff::one(true),
balance: None,
nonce: Diff::new_opt(U256::zero(), U256::from(1u64)),
@ -123,9 +268,9 @@ pub fn h256_from_u8(v: u8) -> H256 {
#[test]
fn account_diff_storage() {
let a = Some(PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: vec![(1u8, 1u8), (2, 2), (3, 3), (4, 4), (5, 0), (6, 0), (7, 0)].into_iter().fold(BTreeMap::new(), |mut m, (k, v)|{m.insert(h256_from_u8(k), h256_from_u8(v)); m})});
let b = Some(PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: vec![(1u8, 1u8), (2, 3), (3, 0), (5, 0), (7, 7), (8, 0), (9, 9)].into_iter().fold(BTreeMap::new(), |mut m, (k, v)|{m.insert(h256_from_u8(k), h256_from_u8(v)); m})});
assert_eq!(diff(&a, &b), Some(PodAccountDiff {
let a = PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: vec![(1u8, 1u8), (2, 2), (3, 3), (4, 4), (5, 0), (6, 0), (7, 0)].into_iter().fold(BTreeMap::new(), |mut m, (k, v)|{m.insert(h256_from_u8(k), h256_from_u8(v)); m})};
let b = PodAccount{balance: U256::zero(), nonce: U256::zero(), code: vec![], storage: vec![(1u8, 1u8), (2, 3), (3, 0), (5, 0), (7, 7), (8, 0), (9, 9)].into_iter().fold(BTreeMap::new(), |mut m, (k, v)|{m.insert(h256_from_u8(k), h256_from_u8(v)); m})};
assert_eq!(pod_diff(Some(&a), Some(&b)), Some(AccountDiff {
exists: Diff::one(true),
balance: None,
nonce: None,

8
src/lib.rs
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@ -73,18 +73,16 @@
//! sudo ldconfig
//! ```
#[macro_use]
extern crate log;
#[macro_use] extern crate log;
extern crate rustc_serialize;
#[macro_use] extern crate itertools;
extern crate flate2;
extern crate rocksdb;
extern crate heapsize;
extern crate crypto;
extern crate time;
extern crate env_logger;
#[cfg(feature = "jit" )]
extern crate evmjit;
#[cfg(feature = "jit" )] extern crate evmjit;
extern crate ethcore_util as util;