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Get rid of MemoryDB denote (#2881)

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This commit is contained in:
Arkadiy Paronyan 2016-10-26 13:53:47 +02:00 committed by Gav Wood
parent 436b7c213d
commit 5b978be034
30 changed files with 359 additions and 376 deletions
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13
Cargo.lock generated
View File

@ -222,8 +222,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]] [[package]]
name = "elastic-array" name = "elastic-array"
version = "0.5.0" version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "git+https://github.com/ethcore/elastic-array#70e4012e691b732c7c4cb04e9232799e6aa268bc"
dependencies = [
"heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]] [[package]]
name = "env_logger" name = "env_logger"
@ -540,7 +543,7 @@ dependencies = [
"ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)", "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
"arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)", "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
"clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)", "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
"elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)", "elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)",
"env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)", "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)", "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
"ethcore-bigint 0.1.1", "ethcore-bigint 0.1.1",
@ -1421,7 +1424,7 @@ dependencies = [
name = "rlp" name = "rlp"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)", "elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)",
"ethcore-bigint 0.1.1", "ethcore-bigint 0.1.1",
"lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)", "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)", "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@ -1954,7 +1957,7 @@ dependencies = [
"checksum deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1614659040e711785ed8ea24219140654da1729f3ec8a47a9719d041112fe7bf" "checksum deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1614659040e711785ed8ea24219140654da1729f3ec8a47a9719d041112fe7bf"
"checksum docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)" = "4cc0acb4ce0828c6a5a11d47baa432fe885881c27428c3a4e473e454ffe57a76" "checksum docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)" = "4cc0acb4ce0828c6a5a11d47baa432fe885881c27428c3a4e473e454ffe57a76"
"checksum dtoa 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0dd841b58510c9618291ffa448da2e4e0f699d984d436122372f446dae62263d" "checksum dtoa 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0dd841b58510c9618291ffa448da2e4e0f699d984d436122372f446dae62263d"
"checksum elastic-array 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4bc9250a632e7c001b741eb0ec6cee93c9a5b6d5f1879696a4b94d62b012210a" "checksum elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)" = "<none>"
"checksum env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "aba65b63ffcc17ffacd6cf5aa843da7c5a25e3bd4bbe0b7def8b214e411250e5" "checksum env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "aba65b63ffcc17ffacd6cf5aa843da7c5a25e3bd4bbe0b7def8b214e411250e5"
"checksum eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)" = "<none>" "checksum eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)" = "<none>"
"checksum ethabi 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0c53453517f620847be51943db329276ae52f2e210cfc659e81182864be2f" "checksum ethabi 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0c53453517f620847be51943db329276ae52f2e210cfc659e81182864be2f"

1
Cargo.toml
View File

@ -73,6 +73,7 @@ ipc = ["ethcore/ipc", "ethsync/ipc"]
jit = ["ethcore/jit"] jit = ["ethcore/jit"]
dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev", "ethcore-dapps/dev", "ethcore-signer/dev"] dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev", "ethcore-dapps/dev", "ethcore-signer/dev"]
json-tests = ["ethcore/json-tests"] json-tests = ["ethcore/json-tests"]
test-heavy = ["ethcore/test-heavy"]
stratum = ["ipc"] stratum = ["ipc"]
ethkey-cli = ["ethcore/ethkey-cli"] ethkey-cli = ["ethcore/ethkey-cli"]
ethstore-cli = ["ethcore/ethstore-cli"] ethstore-cli = ["ethcore/ethstore-cli"]

34
ethcore/src/account_db.rs
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@ -96,9 +96,9 @@ impl<'db> HashDB for AccountDB<'db>{
unimplemented!() unimplemented!()
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(&NULL_RLP_STATIC); return Some(DBValue::from_slice(&NULL_RLP_STATIC));
} }
self.db.get(&combine_key(&self.address_hash, key)) self.db.get(&combine_key(&self.address_hash, key))
} }
@ -114,7 +114,7 @@ impl<'db> HashDB for AccountDB<'db>{
unimplemented!() unimplemented!()
} }
fn emplace(&mut self, _key: H256, _value: Bytes) { fn emplace(&mut self, _key: H256, _value: DBValue) {
unimplemented!() unimplemented!()
} }
@ -122,7 +122,7 @@ impl<'db> HashDB for AccountDB<'db>{
unimplemented!() unimplemented!()
} }
fn get_aux(&self, hash: &[u8]) -> Option<Vec<u8>> { fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
self.db.get_aux(hash) self.db.get_aux(hash)
} }
} }
@ -158,9 +158,9 @@ impl<'db> HashDB for AccountDBMut<'db>{
unimplemented!() unimplemented!()
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(&NULL_RLP_STATIC); return Some(DBValue::from_slice(&NULL_RLP_STATIC));
} }
self.db.get(&combine_key(&self.address_hash, key)) self.db.get(&combine_key(&self.address_hash, key))
} }
@ -178,16 +178,16 @@ impl<'db> HashDB for AccountDBMut<'db>{
} }
let k = value.sha3(); let k = value.sha3();
let ak = combine_key(&self.address_hash, &k); let ak = combine_key(&self.address_hash, &k);
self.db.emplace(ak, value.to_vec()); self.db.emplace(ak, DBValue::from_slice(value));
k k
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
if key == SHA3_NULL_RLP { if key == SHA3_NULL_RLP {
return; return;
} }
let key = combine_key(&self.address_hash, &key); let key = combine_key(&self.address_hash, &key);
self.db.emplace(key, value.to_vec()) self.db.emplace(key, value)
} }
fn remove(&mut self, key: &H256) { fn remove(&mut self, key: &H256) {
@ -202,7 +202,7 @@ impl<'db> HashDB for AccountDBMut<'db>{
self.db.insert_aux(hash, value); self.db.insert_aux(hash, value);
} }
fn get_aux(&self, hash: &[u8]) -> Option<Vec<u8>> { fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
self.db.get_aux(hash) self.db.get_aux(hash)
} }
@ -218,9 +218,9 @@ impl<'db> HashDB for Wrapping<'db> {
unimplemented!() unimplemented!()
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(&NULL_RLP_STATIC); return Some(DBValue::from_slice(&NULL_RLP_STATIC));
} }
self.0.get(key) self.0.get(key)
} }
@ -236,7 +236,7 @@ impl<'db> HashDB for Wrapping<'db> {
unimplemented!() unimplemented!()
} }
fn emplace(&mut self, _key: H256, _value: Bytes) { fn emplace(&mut self, _key: H256, _value: DBValue) {
unimplemented!() unimplemented!()
} }
@ -252,9 +252,9 @@ impl<'db> HashDB for WrappingMut<'db>{
unimplemented!() unimplemented!()
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(&NULL_RLP_STATIC); return Some(DBValue::from_slice(&NULL_RLP_STATIC));
} }
self.0.get(key) self.0.get(key)
} }
@ -273,7 +273,7 @@ impl<'db> HashDB for WrappingMut<'db>{
self.0.insert(value) self.0.insert(value)
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
if key == SHA3_NULL_RLP { if key == SHA3_NULL_RLP {
return; return;
} }
@ -286,4 +286,4 @@ impl<'db> HashDB for WrappingMut<'db>{
} }
self.0.remove(key) self.0.remove(key)
} }
} }

2
ethcore/src/migrations/state/v7.rs
View File

@ -154,7 +154,7 @@ impl OverlayRecentV7 {
// and commit the altered entries. // and commit the altered entries.
fn migrate_journal(&self, source: Arc<Database>, mut batch: Batch, dest: &mut Database) -> Result<(), Error> { fn migrate_journal(&self, source: Arc<Database>, mut batch: Batch, dest: &mut Database) -> Result<(), Error> {
if let Some(val) = try!(source.get(None, V7_LATEST_ERA_KEY).map_err(Error::Custom)) { if let Some(val) = try!(source.get(None, V7_LATEST_ERA_KEY).map_err(Error::Custom)) {
try!(batch.insert(V7_LATEST_ERA_KEY.into(), val.to_owned(), dest)); try!(batch.insert(V7_LATEST_ERA_KEY.into(), val.clone().to_vec(), dest));
let mut era = decode::<u64>(&val); let mut era = decode::<u64>(&val);
loop { loop {

12
ethcore/src/snapshot/account.rs
View File

@ -19,7 +19,7 @@
use account_db::{AccountDB, AccountDBMut}; use account_db::{AccountDB, AccountDBMut};
use snapshot::Error; use snapshot::Error;
use util::{U256, FixedHash, H256, Bytes, HashDB, SHA3_EMPTY, SHA3_NULL_RLP}; use util::{U256, FixedHash, H256, Bytes, HashDB, DBValue, SHA3_EMPTY, SHA3_NULL_RLP};
use util::trie::{TrieDB, Trie}; use util::trie::{TrieDB, Trie};
use rlp::{Rlp, RlpStream, Stream, UntrustedRlp, View}; use rlp::{Rlp, RlpStream, Stream, UntrustedRlp, View};
@ -112,7 +112,7 @@ impl Account {
let mut stream = RlpStream::new_list(pairs.len()); let mut stream = RlpStream::new_list(pairs.len());
for (k, v) in pairs { for (k, v) in pairs {
stream.begin_list(2).append(&k).append(&v); stream.begin_list(2).append(&k).append(&&*v);
} }
let pairs_rlp = stream.out(); let pairs_rlp = stream.out();
@ -130,7 +130,7 @@ impl Account {
match acct_db.get(&self.code_hash) { match acct_db.get(&self.code_hash) {
Some(c) => { Some(c) => {
used_code.insert(self.code_hash.clone()); used_code.insert(self.code_hash.clone());
account_stream.append(&CodeState::Inline.raw()).append(&c); account_stream.append(&CodeState::Inline.raw()).append(&&*c);
} }
None => { None => {
warn!("code lookup failed during snapshot"); warn!("code lookup failed during snapshot");
@ -178,7 +178,7 @@ impl Account {
CodeState::Hash => { CodeState::Hash => {
let code_hash = try!(rlp.val_at(3)); let code_hash = try!(rlp.val_at(3));
if let Some(code) = code_map.get(&code_hash) { if let Some(code) = code_map.get(&code_hash) {
acct_db.emplace(code_hash.clone(), code.clone()); acct_db.emplace(code_hash.clone(), DBValue::from_slice(&code));
} }
(code_hash, None) (code_hash, None)
@ -226,7 +226,7 @@ mod tests {
use snapshot::tests::helpers::fill_storage; use snapshot::tests::helpers::fill_storage;
use util::sha3::{SHA3_EMPTY, SHA3_NULL_RLP}; use util::sha3::{SHA3_EMPTY, SHA3_NULL_RLP};
use util::{Address, FixedHash, H256, HashDB}; use util::{Address, FixedHash, H256, HashDB, DBValue};
use rlp::{UntrustedRlp, View}; use rlp::{UntrustedRlp, View};
use std::collections::{HashSet, HashMap}; use std::collections::{HashSet, HashMap};
@ -292,7 +292,7 @@ mod tests {
{ {
let mut acct_db = AccountDBMut::new(db.as_hashdb_mut(), &addr2); let mut acct_db = AccountDBMut::new(db.as_hashdb_mut(), &addr2);
acct_db.emplace(code_hash.clone(), b"this is definitely code".to_vec()); acct_db.emplace(code_hash.clone(), DBValue::from_slice(b"this is definitely code"));
} }
let account1 = Account { let account1 = Account {

6
ethcore/src/snapshot/mod.rs
View File

@ -29,7 +29,7 @@ use engines::Engine;
use ids::BlockID; use ids::BlockID;
use views::BlockView; use views::BlockView;
use util::{Bytes, Hashable, HashDB, snappy, U256, Uint}; use util::{Bytes, Hashable, HashDB, DBValue, snappy, U256, Uint};
use util::memorydb::MemoryDB; use util::memorydb::MemoryDB;
use util::Mutex; use util::Mutex;
use util::hash::{FixedHash, H256}; use util::hash::{FixedHash, H256};
@ -369,7 +369,7 @@ pub fn chunk_state<'a>(db: &HashDB, root: &H256, writer: &Mutex<SnapshotWriter +
// account_key here is the address' hash. // account_key here is the address' hash.
for item in try!(account_trie.iter()) { for item in try!(account_trie.iter()) {
let (account_key, account_data) = try!(item); let (account_key, account_data) = try!(item);
let account = Account::from_thin_rlp(account_data); let account = Account::from_thin_rlp(&*account_data);
let account_key_hash = H256::from_slice(&account_key); let account_key_hash = H256::from_slice(&account_key);
let account_db = AccountDB::from_hash(db, account_key_hash); let account_db = AccountDB::from_hash(db, account_key_hash);
@ -457,7 +457,7 @@ impl StateRebuilder {
for (code_hash, code) in chunk_code { for (code_hash, code) in chunk_code {
for addr_hash in self.missing_code.remove(&code_hash).unwrap_or_else(Vec::new) { for addr_hash in self.missing_code.remove(&code_hash).unwrap_or_else(Vec::new) {
let mut db = AccountDBMut::from_hash(self.db.as_hashdb_mut(), addr_hash); let mut db = AccountDBMut::from_hash(self.db.as_hashdb_mut(), addr_hash);
db.emplace(code_hash, code.clone()); db.emplace(code_hash, DBValue::from_slice(&code));
} }
self.code_map.insert(code_hash, code); self.code_map.insert(code_hash, code);

3
ethcore/src/snapshot/tests/helpers.rs
View File

@ -21,6 +21,7 @@ use account_db::AccountDBMut;
use rand::Rng; use rand::Rng;
use snapshot::account::Account; use snapshot::account::Account;
use util::DBValue;
use util::hash::{FixedHash, H256}; use util::hash::{FixedHash, H256};
use util::hashdb::HashDB; use util::hashdb::HashDB;
use util::trie::{Alphabet, StandardMap, SecTrieDBMut, TrieMut, ValueMode}; use util::trie::{Alphabet, StandardMap, SecTrieDBMut, TrieMut, ValueMode};
@ -66,7 +67,7 @@ impl StateProducer {
let mut account = Account::from_thin_rlp(&*account_data); let mut account = Account::from_thin_rlp(&*account_data);
let acct_db = AccountDBMut::from_hash(db, *address_hash); let acct_db = AccountDBMut::from_hash(db, *address_hash);
fill_storage(acct_db, account.storage_root_mut(), &mut self.storage_seed); fill_storage(acct_db, account.storage_root_mut(), &mut self.storage_seed);
*account_data = account.to_thin_rlp(); *account_data = DBValue::from_vec(account.to_thin_rlp());
} }
// sweep again to alter account trie. // sweep again to alter account trie.

6
ethcore/src/state/account.rs
View File

@ -172,7 +172,7 @@ impl Account {
using it will not fail."); using it will not fail.");
let item: U256 = match db.get(key){ let item: U256 = match db.get(key){
Ok(x) => x.map_or_else(U256::zero, decode), Ok(x) => x.map_or_else(U256::zero, |v| decode(&*v)),
Err(e) => panic!("Encountered potential DB corruption: {}", e), Err(e) => panic!("Encountered potential DB corruption: {}", e),
}; };
let value: H256 = item.into(); let value: H256 = item.into();
@ -253,8 +253,8 @@ impl Account {
self.is_cached() || self.is_cached() ||
match db.get(&self.code_hash) { match db.get(&self.code_hash) {
Some(x) => { Some(x) => {
self.code_cache = Arc::new(x.to_vec());
self.code_size = Some(x.len()); self.code_size = Some(x.len());
self.code_cache = Arc::new(x.to_vec());
true true
}, },
_ => { _ => {
@ -351,7 +351,7 @@ impl Account {
self.code_filth = Filth::Clean; self.code_filth = Filth::Clean;
}, },
(true, false) => { (true, false) => {
db.emplace(self.code_hash.clone(), (*self.code_cache).clone()); db.emplace(self.code_hash.clone(), DBValue::from_slice(&*self.code_cache));
self.code_size = Some(self.code_cache.len()); self.code_size = Some(self.code_cache.len());
self.code_filth = Filth::Clean; self.code_filth = Filth::Clean;
}, },

6
ethcore/src/state/mod.rs
View File

@ -408,7 +408,7 @@ impl State {
// account is not found in the global cache, get from the DB and insert into local // account is not found in the global cache, get from the DB and insert into local
let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR); let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR);
let maybe_acc = match db.get(address) { let maybe_acc = match db.get(address) {
Ok(acc) => acc.map(Account::from_rlp), Ok(acc) => acc.map(|v| Account::from_rlp(&v)),
Err(e) => panic!("Potential DB corruption encountered: {}", e), Err(e) => panic!("Potential DB corruption encountered: {}", e),
}; };
let r = maybe_acc.as_ref().map_or(H256::new(), |a| { let r = maybe_acc.as_ref().map_or(H256::new(), |a| {
@ -648,7 +648,7 @@ impl State {
// not found in the global cache, get from the DB and insert into local // not found in the global cache, get from the DB and insert into local
let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR); let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR);
let mut maybe_acc = match db.get(a) { let mut maybe_acc = match db.get(a) {
Ok(acc) => acc.map(Account::from_rlp), Ok(acc) => acc.map(|v| Account::from_rlp(&v)),
Err(e) => panic!("Potential DB corruption encountered: {}", e), Err(e) => panic!("Potential DB corruption encountered: {}", e),
}; };
if let Some(ref mut account) = maybe_acc.as_mut() { if let Some(ref mut account) = maybe_acc.as_mut() {
@ -680,7 +680,7 @@ impl State {
let maybe_acc = if self.db.check_account_bloom(a) { let maybe_acc = if self.db.check_account_bloom(a) {
let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR); let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR);
let maybe_acc = match db.get(a) { let maybe_acc = match db.get(a) {
Ok(Some(acc)) => AccountEntry::new_clean(Some(Account::from_rlp(acc))), Ok(Some(acc)) => AccountEntry::new_clean(Some(Account::from_rlp(&acc))),
Ok(None) => AccountEntry::new_clean(None), Ok(None) => AccountEntry::new_clean(None),
Err(e) => panic!("Potential DB corruption encountered: {}", e), Err(e) => panic!("Potential DB corruption encountered: {}", e),
}; };

2
util/Cargo.toml
View File

@ -18,7 +18,7 @@ rocksdb = { git = "https://github.com/ethcore/rust-rocksdb" }
lazy_static = "0.2" lazy_static = "0.2"
eth-secp256k1 = { git = "https://github.com/ethcore/rust-secp256k1" } eth-secp256k1 = { git = "https://github.com/ethcore/rust-secp256k1" }
rust-crypto = "0.2.34" rust-crypto = "0.2.34"
elastic-array = "0.5" elastic-array = { git = "https://github.com/ethcore/elastic-array" }
rlp = { path = "rlp" } rlp = { path = "rlp" }
heapsize = { version = "0.3", features = ["unstable"] } heapsize = { version = "0.3", features = ["unstable"] }
itertools = "0.4" itertools = "0.4"

4
util/rlp/Cargo.toml
View File

@ -6,7 +6,7 @@ version = "0.1.0"
authors = ["Ethcore <admin@ethcore.io>"] authors = ["Ethcore <admin@ethcore.io>"]
[dependencies] [dependencies]
elastic-array = "0.5" elastic-array = { git = "https://github.com/ethcore/elastic-array" }
ethcore-bigint = { path = "../bigint" } ethcore-bigint = { path = "../bigint" }
lazy_static = "0.2" lazy_static = "0.2"
rustc-serialize = "0.3" rustc-serialize = "0.3"

13
util/src/hashdb.rs
View File

@ -16,8 +16,11 @@
//! Database of byte-slices keyed to their Keccak hash. //! Database of byte-slices keyed to their Keccak hash.
use hash::*; use hash::*;
use bytes::*;
use std::collections::HashMap; use std::collections::HashMap;
use elastic_array::ElasticArray256;
/// `HashDB` value type.
pub type DBValue = ElasticArray256<u8>;
/// Trait modelling datastore keyed by a 32-byte Keccak hash. /// Trait modelling datastore keyed by a 32-byte Keccak hash.
pub trait HashDB: AsHashDB + Send + Sync { pub trait HashDB: AsHashDB + Send + Sync {
@ -39,7 +42,7 @@ pub trait HashDB: AsHashDB + Send + Sync {
/// assert_eq!(m.get(&hash).unwrap(), hello_bytes); /// assert_eq!(m.get(&hash).unwrap(), hello_bytes);
/// } /// }
/// ``` /// ```
fn get(&self, key: &H256) -> Option<&[u8]>; fn get(&self, key: &H256) -> Option<DBValue>;
/// Check for the existance of a hash-key. /// Check for the existance of a hash-key.
/// ///
@ -80,7 +83,7 @@ pub trait HashDB: AsHashDB + Send + Sync {
fn insert(&mut self, value: &[u8]) -> H256; fn insert(&mut self, value: &[u8]) -> H256;
/// Like `insert()` , except you provide the key and the data is all moved. /// Like `insert()` , except you provide the key and the data is all moved.
fn emplace(&mut self, key: H256, value: Bytes); fn emplace(&mut self, key: H256, value: DBValue);
/// Remove a datum previously inserted. Insertions can be "owed" such that the same number of `insert()`s may /// Remove a datum previously inserted. Insertions can be "owed" such that the same number of `insert()`s may
/// happen without the data being eventually being inserted into the DB. /// happen without the data being eventually being inserted into the DB.
@ -111,7 +114,7 @@ pub trait HashDB: AsHashDB + Send + Sync {
} }
/// Get auxiliary data from hashdb. /// Get auxiliary data from hashdb.
fn get_aux(&self, _hash: &[u8]) -> Option<Vec<u8>> { fn get_aux(&self, _hash: &[u8]) -> Option<DBValue> {
unimplemented!(); unimplemented!();
} }
@ -136,4 +139,4 @@ impl<T: HashDB> AsHashDB for T {
fn as_hashdb_mut(&mut self) -> &mut HashDB { fn as_hashdb_mut(&mut self) -> &mut HashDB {
self self
} }
} }

28
util/src/journaldb/archivedb.rs
View File

@ -65,8 +65,8 @@ impl ArchiveDB {
Self::new(backing, None) Self::new(backing, None)
} }
fn payload(&self, key: &H256) -> Option<Bytes> { fn payload(&self, key: &H256) -> Option<DBValue> {
self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?").map(|v| v.to_vec()) self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?")
} }
} }
@ -85,19 +85,12 @@ impl HashDB for ArchiveDB {
ret ret
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
let k = self.overlay.raw(key); let k = self.overlay.raw(key);
match k { if let Some((d, rc)) = k {
Some((d, rc)) if rc > 0 => Some(d), if rc > 0 { return Some(d); }
_ => {
if let Some(x) = self.payload(key) {
Some(self.overlay.denote(key, x).0)
}
else {
None
}
}
} }
self.payload(key)
} }
fn contains(&self, key: &H256) -> bool { fn contains(&self, key: &H256) -> bool {
@ -108,7 +101,7 @@ impl HashDB for ArchiveDB {
self.overlay.insert(value) self.overlay.insert(value)
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
self.overlay.emplace(key, value); self.overlay.emplace(key, value);
} }
@ -120,7 +113,7 @@ impl HashDB for ArchiveDB {
self.overlay.insert_aux(hash, value); self.overlay.insert_aux(hash, value);
} }
fn get_aux(&self, hash: &[u8]) -> Option<Vec<u8>> { fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
if let Some(res) = self.overlay.get_aux(hash) { if let Some(res) = self.overlay.get_aux(hash) {
return Some(res) return Some(res)
} }
@ -130,7 +123,6 @@ impl HashDB for ArchiveDB {
self.backing.get(self.column, &db_hash) self.backing.get(self.column, &db_hash)
.expect("Low-level database error. Some issue with your hard disk?") .expect("Low-level database error. Some issue with your hard disk?")
.map(|v| v.to_vec())
} }
fn remove_aux(&mut self, hash: &[u8]) { fn remove_aux(&mut self, hash: &[u8]) {
@ -396,7 +388,7 @@ mod tests {
let mut jdb = new_db(&dir); let mut jdb = new_db(&dir);
// history is 1 // history is 1
let foo = jdb.insert(b"foo"); let foo = jdb.insert(b"foo");
jdb.emplace(bar.clone(), b"bar".to_vec()); jdb.emplace(bar.clone(), DBValue::from_slice(b"bar"));
jdb.commit_batch(0, &b"0".sha3(), None).unwrap(); jdb.commit_batch(0, &b"0".sha3(), None).unwrap();
foo foo
}; };
@ -497,7 +489,7 @@ mod tests {
let key = jdb.insert(b"dog"); let key = jdb.insert(b"dog");
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();
assert_eq!(jdb.get(&key).unwrap(), b"dog"); assert_eq!(jdb.get(&key).unwrap(), DBValue::from_slice(b"dog"));
jdb.remove(&key); jdb.remove(&key);
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();

29
util/src/journaldb/earlymergedb.rs
View File

@ -150,7 +150,7 @@ impl EarlyMergeDB {
backing.get(col, &Self::morph_key(key, 0)).expect("Low-level database error. Some issue with your hard disk?").is_some() backing.get(col, &Self::morph_key(key, 0)).expect("Low-level database error. Some issue with your hard disk?").is_some()
} }
fn insert_keys(inserts: &[(H256, Bytes)], backing: &Database, col: Option<u32>, refs: &mut HashMap<H256, RefInfo>, batch: &mut DBTransaction, trace: bool) { fn insert_keys(inserts: &[(H256, DBValue)], backing: &Database, col: Option<u32>, refs: &mut HashMap<H256, RefInfo>, batch: &mut DBTransaction, trace: bool) {
for &(ref h, ref d) in inserts { for &(ref h, ref d) in inserts {
if let Some(c) = refs.get_mut(h) { if let Some(c) = refs.get_mut(h) {
// already counting. increment. // already counting. increment.
@ -268,8 +268,8 @@ impl EarlyMergeDB {
} }
} }
fn payload(&self, key: &H256) -> Option<Bytes> { fn payload(&self, key: &H256) -> Option<DBValue> {
self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?").map(|v| v.to_vec()) self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?")
} }
fn read_refs(db: &Database, col: Option<u32>) -> (Option<u64>, HashMap<H256, RefInfo>) { fn read_refs(db: &Database, col: Option<u32>) -> (Option<u64>, HashMap<H256, RefInfo>) {
@ -317,19 +317,12 @@ impl HashDB for EarlyMergeDB {
ret ret
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
let k = self.overlay.raw(key); let k = self.overlay.raw(key);
match k { if let Some((d, rc)) = k {
Some((d, rc)) if rc > 0 => Some(d), if rc > 0 { return Some(d) }
_ => {
if let Some(x) = self.payload(key) {
Some(self.overlay.denote(key, x).0)
}
else {
None
}
}
} }
self.payload(key)
} }
fn contains(&self, key: &H256) -> bool { fn contains(&self, key: &H256) -> bool {
@ -339,7 +332,7 @@ impl HashDB for EarlyMergeDB {
fn insert(&mut self, value: &[u8]) -> H256 { fn insert(&mut self, value: &[u8]) -> H256 {
self.overlay.insert(value) self.overlay.insert(value)
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
self.overlay.emplace(key, value); self.overlay.emplace(key, value);
} }
fn remove(&mut self, key: &H256) { fn remove(&mut self, key: &H256) {
@ -413,7 +406,7 @@ impl JournalDB for EarlyMergeDB {
.iter() .iter()
.filter_map(|(k, &(_, c))| if c < 0 {Some(k.clone())} else {None}) .filter_map(|(k, &(_, c))| if c < 0 {Some(k.clone())} else {None})
.collect(); .collect();
let inserts: Vec<(H256, Bytes)> = drained let inserts: Vec<(H256, _)> = drained
.into_iter() .into_iter()
.filter_map(|(k, (v, r))| if r > 0 { assert!(r == 1); Some((k, v)) } else { assert!(r >= -1); None }) .filter_map(|(k, (v, r))| if r > 0 { assert!(r == 1); Some((k, v)) } else { assert!(r >= -1); None })
.collect(); .collect();
@ -832,7 +825,7 @@ mod tests {
let mut jdb = new_db(&dir); let mut jdb = new_db(&dir);
// history is 1 // history is 1
let foo = jdb.insert(b"foo"); let foo = jdb.insert(b"foo");
jdb.emplace(bar.clone(), b"bar".to_vec()); jdb.emplace(bar.clone(), DBValue::from_slice(b"bar"));
jdb.commit_batch(0, &b"0".sha3(), None).unwrap(); jdb.commit_batch(0, &b"0".sha3(), None).unwrap();
assert!(jdb.can_reconstruct_refs()); assert!(jdb.can_reconstruct_refs());
foo foo
@ -1088,7 +1081,7 @@ mod tests {
let key = jdb.insert(b"dog"); let key = jdb.insert(b"dog");
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();
assert_eq!(jdb.get(&key).unwrap(), b"dog"); assert_eq!(jdb.get(&key).unwrap(), DBValue::from_slice(b"dog"));
jdb.remove(&key); jdb.remove(&key);
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();

56
util/src/journaldb/overlayrecentdb.rs
View File

@ -67,7 +67,7 @@ pub struct OverlayRecentDB {
#[derive(PartialEq)] #[derive(PartialEq)]
struct JournalOverlay { struct JournalOverlay {
backing_overlay: MemoryDB, // Nodes added in the history period backing_overlay: MemoryDB, // Nodes added in the history period
pending_overlay: H256FastMap<Bytes>, // Nodes being transfered from backing_overlay to backing db pending_overlay: H256FastMap<DBValue>, // Nodes being transfered from backing_overlay to backing db
journal: HashMap<u64, Vec<JournalEntry>>, journal: HashMap<u64, Vec<JournalEntry>>,
latest_era: Option<u64>, latest_era: Option<u64>,
earliest_era: Option<u64>, earliest_era: Option<u64>,
@ -130,7 +130,7 @@ impl OverlayRecentDB {
journal_overlay.latest_era == reconstructed.latest_era journal_overlay.latest_era == reconstructed.latest_era
} }
fn payload(&self, key: &H256) -> Option<Bytes> { fn payload(&self, key: &H256) -> Option<DBValue> {
self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?") self.backing.get(self.column, key).expect("Low-level database error. Some issue with your hard disk?")
} }
@ -160,8 +160,8 @@ impl OverlayRecentDB {
let mut inserted_keys = Vec::new(); let mut inserted_keys = Vec::new();
for r in insertions.iter() { for r in insertions.iter() {
let k: H256 = r.val_at(0); let k: H256 = r.val_at(0);
let v: Bytes = r.val_at(1); let v = r.at(1).data();
overlay.emplace(to_short_key(&k), v); overlay.emplace(to_short_key(&k), DBValue::from_slice(v));
inserted_keys.push(k); inserted_keys.push(k);
count += 1; count += 1;
} }
@ -229,7 +229,7 @@ impl JournalDB for OverlayRecentDB {
let journal_overlay = self.journal_overlay.read(); let journal_overlay = self.journal_overlay.read();
let key = to_short_key(key); let key = to_short_key(key);
journal_overlay.backing_overlay.get(&key).map(|v| v.to_vec()) journal_overlay.backing_overlay.get(&key).map(|v| v.to_vec())
.or_else(|| journal_overlay.pending_overlay.get(&key).cloned()) .or_else(|| journal_overlay.pending_overlay.get(&key).map(|d| d.clone().to_vec()))
.or_else(|| self.backing.get_by_prefix(self.column, &key[0..DB_PREFIX_LEN]).map(|b| b.to_vec())) .or_else(|| self.backing.get_by_prefix(self.column, &key[0..DB_PREFIX_LEN]).map(|b| b.to_vec()))
} }
@ -255,7 +255,7 @@ impl JournalDB for OverlayRecentDB {
for (k, v) in insertions { for (k, v) in insertions {
r.begin_list(2); r.begin_list(2);
r.append(&k); r.append(&k);
r.append(&v); r.append(&&*v);
journal_overlay.backing_overlay.emplace(to_short_key(&k), v); journal_overlay.backing_overlay.emplace(to_short_key(&k), v);
} }
r.append(&removed_keys); r.append(&removed_keys);
@ -284,7 +284,7 @@ impl JournalDB for OverlayRecentDB {
let mut ops = 0; let mut ops = 0;
// apply old commits' details // apply old commits' details
if let Some(ref mut records) = journal_overlay.journal.get_mut(&end_era) { if let Some(ref mut records) = journal_overlay.journal.get_mut(&end_era) {
let mut canon_insertions: Vec<(H256, Bytes)> = Vec::new(); let mut canon_insertions: Vec<(H256, DBValue)> = Vec::new();
let mut canon_deletions: Vec<H256> = Vec::new(); let mut canon_deletions: Vec<H256> = Vec::new();
let mut overlay_deletions: Vec<H256> = Vec::new(); let mut overlay_deletions: Vec<H256> = Vec::new();
let mut index = 0usize; let mut index = 0usize;
@ -301,7 +301,7 @@ impl JournalDB for OverlayRecentDB {
for h in &journal.insertions { for h in &journal.insertions {
if let Some((d, rc)) = journal_overlay.backing_overlay.raw(&to_short_key(h)) { if let Some((d, rc)) = journal_overlay.backing_overlay.raw(&to_short_key(h)) {
if rc > 0 { if rc > 0 {
canon_insertions.push((h.clone(), d.to_owned())); //TODO: optimize this to avoid data copy canon_insertions.push((h.clone(), d)); //TODO: optimize this to avoid data copy
} }
} }
} }
@ -386,32 +386,18 @@ impl HashDB for OverlayRecentDB {
ret ret
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
let k = self.transaction_overlay.raw(key); let k = self.transaction_overlay.raw(key);
match k { if let Some((d, rc)) = k {
Some((d, rc)) if rc > 0 => Some(d), if rc > 0 { return Some(d) }
_ => {
let v = {
let journal_overlay = self.journal_overlay.read();
let key = to_short_key(key);
journal_overlay.backing_overlay.get(&key).map(|v| v.to_vec())
.or_else(|| journal_overlay.pending_overlay.get(&key).cloned())
};
match v {
Some(x) => {
Some(self.transaction_overlay.denote(key, x).0)
}
_ => {
if let Some(x) = self.payload(key) {
Some(self.transaction_overlay.denote(key, x).0)
}
else {
None
}
}
}
}
} }
let v = {
let journal_overlay = self.journal_overlay.read();
let key = to_short_key(key);
journal_overlay.backing_overlay.get(&key)
.or_else(|| journal_overlay.pending_overlay.get(&key).cloned())
};
v.or_else(|| self.payload(key))
} }
fn contains(&self, key: &H256) -> bool { fn contains(&self, key: &H256) -> bool {
@ -421,7 +407,7 @@ impl HashDB for OverlayRecentDB {
fn insert(&mut self, value: &[u8]) -> H256 { fn insert(&mut self, value: &[u8]) -> H256 {
self.transaction_overlay.insert(value) self.transaction_overlay.insert(value)
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
self.transaction_overlay.emplace(key, value); self.transaction_overlay.emplace(key, value);
} }
fn remove(&mut self, key: &H256) { fn remove(&mut self, key: &H256) {
@ -692,7 +678,7 @@ mod tests {
let mut jdb = new_db(&dir); let mut jdb = new_db(&dir);
// history is 1 // history is 1
let foo = jdb.insert(b"foo"); let foo = jdb.insert(b"foo");
jdb.emplace(bar.clone(), b"bar".to_vec()); jdb.emplace(bar.clone(), DBValue::from_slice(b"bar"));
jdb.commit_batch(0, &b"0".sha3(), None).unwrap(); jdb.commit_batch(0, &b"0".sha3(), None).unwrap();
assert!(jdb.can_reconstruct_refs()); assert!(jdb.can_reconstruct_refs());
foo foo
@ -965,7 +951,7 @@ mod tests {
let key = jdb.insert(b"dog"); let key = jdb.insert(b"dog");
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();
assert_eq!(jdb.get(&key).unwrap(), b"dog"); assert_eq!(jdb.get(&key).unwrap(), DBValue::from_slice(b"dog"));
jdb.remove(&key); jdb.remove(&key);
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();

6
util/src/journaldb/refcounteddb.rs
View File

@ -83,10 +83,10 @@ impl RefCountedDB {
impl HashDB for RefCountedDB { impl HashDB for RefCountedDB {
fn keys(&self) -> HashMap<H256, i32> { self.forward.keys() } fn keys(&self) -> HashMap<H256, i32> { self.forward.keys() }
fn get(&self, key: &H256) -> Option<&[u8]> { self.forward.get(key) } fn get(&self, key: &H256) -> Option<DBValue> { self.forward.get(key) }
fn contains(&self, key: &H256) -> bool { self.forward.contains(key) } fn contains(&self, key: &H256) -> bool { self.forward.contains(key) }
fn insert(&mut self, value: &[u8]) -> H256 { let r = self.forward.insert(value); self.inserts.push(r.clone()); r } fn insert(&mut self, value: &[u8]) -> H256 { let r = self.forward.insert(value); self.inserts.push(r.clone()); r }
fn emplace(&mut self, key: H256, value: Bytes) { self.inserts.push(key.clone()); self.forward.emplace(key, value); } fn emplace(&mut self, key: H256, value: DBValue) { self.inserts.push(key.clone()); self.forward.emplace(key, value); }
fn remove(&mut self, key: &H256) { self.removes.push(key.clone()); } fn remove(&mut self, key: &H256) { self.removes.push(key.clone()); }
} }
@ -326,7 +326,7 @@ mod tests {
let key = jdb.insert(b"dog"); let key = jdb.insert(b"dog");
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();
assert_eq!(jdb.get(&key).unwrap(), b"dog"); assert_eq!(jdb.get(&key).unwrap(), DBValue::from_slice(b"dog"));
jdb.remove(&key); jdb.remove(&key);
jdb.inject_batch().unwrap(); jdb.inject_batch().unwrap();

21
util/src/kvdb.rs
View File

@ -21,6 +21,7 @@ use common::*;
use elastic_array::*; use elastic_array::*;
use std::default::Default; use std::default::Default;
use std::path::PathBuf; use std::path::PathBuf;
use hashdb::DBValue;
use rlp::{UntrustedRlp, RlpType, View, Compressible}; use rlp::{UntrustedRlp, RlpType, View, Compressible};
use rocksdb::{DB, Writable, WriteBatch, WriteOptions, IteratorMode, DBIterator, use rocksdb::{DB, Writable, WriteBatch, WriteOptions, IteratorMode, DBIterator,
Options, DBCompactionStyle, BlockBasedOptions, Direction, Cache, Column, ReadOptions}; Options, DBCompactionStyle, BlockBasedOptions, Direction, Cache, Column, ReadOptions};
@ -43,12 +44,12 @@ enum DBOp {
Insert { Insert {
col: Option<u32>, col: Option<u32>,
key: ElasticArray32<u8>, key: ElasticArray32<u8>,
value: Bytes, value: DBValue,
}, },
InsertCompressed { InsertCompressed {
col: Option<u32>, col: Option<u32>,
key: ElasticArray32<u8>, key: ElasticArray32<u8>,
value: Bytes, value: DBValue,
}, },
Delete { Delete {
col: Option<u32>, col: Option<u32>,
@ -71,7 +72,7 @@ impl DBTransaction {
self.ops.push(DBOp::Insert { self.ops.push(DBOp::Insert {
col: col, col: col,
key: ekey, key: ekey,
value: value.to_vec(), value: DBValue::from_slice(value),
}); });
} }
@ -82,7 +83,7 @@ impl DBTransaction {
self.ops.push(DBOp::Insert { self.ops.push(DBOp::Insert {
col: col, col: col,
key: ekey, key: ekey,
value: value, value: DBValue::from_vec(value),
}); });
} }
@ -94,7 +95,7 @@ impl DBTransaction {
self.ops.push(DBOp::InsertCompressed { self.ops.push(DBOp::InsertCompressed {
col: col, col: col,
key: ekey, key: ekey,
value: value, value: DBValue::from_vec(value),
}); });
} }
@ -110,8 +111,8 @@ impl DBTransaction {
} }
enum KeyState { enum KeyState {
Insert(Bytes), Insert(DBValue),
InsertCompressed(Bytes), InsertCompressed(DBValue),
Delete, Delete,
} }
@ -507,7 +508,7 @@ impl Database {
} }
/// Get value by key. /// Get value by key.
pub fn get(&self, col: Option<u32>, key: &[u8]) -> Result<Option<Bytes>, String> { pub fn get(&self, col: Option<u32>, key: &[u8]) -> Result<Option<DBValue>, String> {
match *self.db.read() { match *self.db.read() {
Some(DBAndColumns { ref db, ref cfs }) => { Some(DBAndColumns { ref db, ref cfs }) => {
let overlay = &self.overlay.read()[Self::to_overlay_column(col)]; let overlay = &self.overlay.read()[Self::to_overlay_column(col)];
@ -521,8 +522,8 @@ impl Database {
Some(&KeyState::Delete) => Ok(None), Some(&KeyState::Delete) => Ok(None),
None => { None => {
col.map_or_else( col.map_or_else(
|| db.get_opt(key, &self.read_opts).map(|r| r.map(|v| v.to_vec())), || db.get_opt(key, &self.read_opts).map(|r| r.map(|v| DBValue::from_slice(&v))),
|c| db.get_cf_opt(cfs[c as usize], key, &self.read_opts).map(|r| r.map(|v| v.to_vec()))) |c| db.get_cf_opt(cfs[c as usize], key, &self.read_opts).map(|r| r.map(|v| DBValue::from_slice(&v))))
}, },
} }
}, },

2
util/src/lib.rs
View File

@ -148,7 +148,7 @@ mod timer;
pub use common::*; pub use common::*;
pub use misc::*; pub use misc::*;
pub use hashdb::*; pub use hashdb::*;
pub use memorydb::*; pub use memorydb::MemoryDB;
pub use overlaydb::*; pub use overlaydb::*;
pub use journaldb::JournalDB; pub use journaldb::JournalDB;
pub use triehash::*; pub use triehash::*;

78
util/src/memorydb.rs
View File

@ -24,8 +24,6 @@ use hashdb::*;
use heapsize::*; use heapsize::*;
use std::mem; use std::mem;
use std::collections::HashMap; use std::collections::HashMap;
const STATIC_NULL_RLP: (&'static [u8], i32) = (&[0x80; 1], 1);
use std::collections::hash_map::Entry; use std::collections::hash_map::Entry;
/// Reference-counted memory-based `HashDB` implementation. /// Reference-counted memory-based `HashDB` implementation.
@ -73,8 +71,8 @@ use std::collections::hash_map::Entry;
/// ``` /// ```
#[derive(Default, Clone, PartialEq)] #[derive(Default, Clone, PartialEq)]
pub struct MemoryDB { pub struct MemoryDB {
data: H256FastMap<(Bytes, i32)>, data: H256FastMap<(DBValue, i32)>,
aux: HashMap<Bytes, Bytes>, aux: HashMap<Bytes, DBValue>,
} }
impl MemoryDB { impl MemoryDB {
@ -116,12 +114,12 @@ impl MemoryDB {
} }
/// Return the internal map of hashes to data, clearing the current state. /// Return the internal map of hashes to data, clearing the current state.
pub fn drain(&mut self) -> H256FastMap<(Bytes, i32)> { pub fn drain(&mut self) -> H256FastMap<(DBValue, i32)> {
mem::replace(&mut self.data, H256FastMap::default()) mem::replace(&mut self.data, H256FastMap::default())
} }
/// Return the internal map of auxiliary data, clearing the current state. /// Return the internal map of auxiliary data, clearing the current state.
pub fn drain_aux(&mut self) -> HashMap<Bytes, Bytes> { pub fn drain_aux(&mut self) -> HashMap<Bytes, DBValue> {
mem::replace(&mut self.aux, HashMap::new()) mem::replace(&mut self.aux, HashMap::new())
} }
@ -130,25 +128,11 @@ impl MemoryDB {
/// ///
/// Even when Some is returned, the data is only guaranteed to be useful /// Even when Some is returned, the data is only guaranteed to be useful
/// when the refs > 0. /// when the refs > 0.
pub fn raw(&self, key: &H256) -> Option<(&[u8], i32)> { pub fn raw(&self, key: &H256) -> Option<(DBValue, i32)> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(STATIC_NULL_RLP.clone()); return Some((DBValue::from_slice(&NULL_RLP_STATIC), 1));
} }
self.data.get(key).map(|&(ref val, rc)| (&val[..], rc)) self.data.get(key).cloned()
}
/// Denote than an existing value has the given key. Used when a key gets removed without
/// a prior insert and thus has a negative reference with no value.
///
/// May safely be called even if the key's value is known, in which case it will be a no-op.
pub fn denote(&self, key: &H256, value: Bytes) -> (&[u8], i32) {
if self.raw(key) == None {
unsafe {
let p = &self.data as *const H256FastMap<(Bytes, i32)> as *mut H256FastMap<(Bytes, i32)>;
(*p).insert(key.clone(), (value, 0));
}
}
self.raw(key).expect("entry just inserted into data; qed")
} }
/// Returns the size of allocated heap memory /// Returns the size of allocated heap memory
@ -170,7 +154,7 @@ impl MemoryDB {
entry.get_mut().1 -= 1; entry.get_mut().1 -= 1;
}, },
Entry::Vacant(entry) => { Entry::Vacant(entry) => {
entry.insert((Bytes::new(), -1)); entry.insert((DBValue::new(), -1));
} }
} }
} }
@ -197,13 +181,13 @@ impl MemoryDB {
static NULL_RLP_STATIC: [u8; 1] = [0x80; 1]; static NULL_RLP_STATIC: [u8; 1] = [0x80; 1];
impl HashDB for MemoryDB { impl HashDB for MemoryDB {
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
if key == &SHA3_NULL_RLP { if key == &SHA3_NULL_RLP {
return Some(&NULL_RLP_STATIC); return Some(DBValue::from_slice(&NULL_RLP_STATIC));
} }
match self.data.get(key) { match self.data.get(key) {
Some(&(ref d, rc)) if rc > 0 => Some(d), Some(&(ref d, rc)) if rc > 0 => Some(d.clone()),
_ => None _ => None
} }
} }
@ -230,20 +214,20 @@ impl HashDB for MemoryDB {
let key = value.sha3(); let key = value.sha3();
if match self.data.get_mut(&key) { if match self.data.get_mut(&key) {
Some(&mut (ref mut old_value, ref mut rc @ -0x80000000i32 ... 0)) => { Some(&mut (ref mut old_value, ref mut rc @ -0x80000000i32 ... 0)) => {
*old_value = value.into(); *old_value = DBValue::from_slice(value);
*rc += 1; *rc += 1;
false false
}, },
Some(&mut (_, ref mut x)) => { *x += 1; false } , Some(&mut (_, ref mut x)) => { *x += 1; false } ,
None => true, None => true,
}{ // ... None falls through into... }{ // ... None falls through into...
self.data.insert(key.clone(), (value.into(), 1)); self.data.insert(key.clone(), (DBValue::from_slice(value), 1));
} }
key key
} }
fn emplace(&mut self, key: H256, value: Bytes) { fn emplace(&mut self, key: H256, value: DBValue) {
if value == &NULL_RLP { if &*value == &NULL_RLP {
return; return;
} }
@ -269,15 +253,15 @@ impl HashDB for MemoryDB {
Some(&mut (_, ref mut x)) => { *x -= 1; false } Some(&mut (_, ref mut x)) => { *x -= 1; false }
None => true None => true
}{ // ... None falls through into... }{ // ... None falls through into...
self.data.insert(key.clone(), (Bytes::new(), -1)); self.data.insert(key.clone(), (DBValue::new(), -1));
} }
} }
fn insert_aux(&mut self, hash: Vec<u8>, value: Vec<u8>) { fn insert_aux(&mut self, hash: Vec<u8>, value: Vec<u8>) {
self.aux.insert(hash, value); self.aux.insert(hash, DBValue::from_vec(value));
} }
fn get_aux(&self, hash: &[u8]) -> Option<Vec<u8>> { fn get_aux(&self, hash: &[u8]) -> Option<DBValue> {
self.aux.get(hash).cloned() self.aux.get(hash).cloned()
} }
@ -286,24 +270,6 @@ impl HashDB for MemoryDB {
} }
} }
#[test]
fn memorydb_denote() {
let mut m = MemoryDB::new();
let hello_bytes = b"Hello world!";
let hash = m.insert(hello_bytes);
assert_eq!(m.get(&hash).unwrap(), b"Hello world!");
for _ in 0..1000 {
let r = H256::random();
let k = r.sha3();
let (v, rc) = m.denote(&k, r.to_vec());
assert_eq!(v, &*r);
assert_eq!(rc, 0);
}
assert_eq!(m.get(&hash).unwrap(), b"Hello world!");
}
#[test] #[test]
fn memorydb_remove_and_purge() { fn memorydb_remove_and_purge() {
let hello_bytes = b"Hello world!"; let hello_bytes = b"Hello world!";
@ -337,12 +303,12 @@ fn consolidate() {
main.remove(&remove_key); main.remove(&remove_key);
let insert_key = other.insert(b"arf"); let insert_key = other.insert(b"arf");
main.emplace(insert_key, b"arf".to_vec()); main.emplace(insert_key, DBValue::from_slice(b"arf"));
main.consolidate(other); main.consolidate(other);
let overlay = main.drain(); let overlay = main.drain();
assert_eq!(overlay.get(&remove_key).unwrap(), &(b"doggo".to_vec(), 0)); assert_eq!(overlay.get(&remove_key).unwrap(), &(DBValue::from_slice(b"doggo"), 0));
assert_eq!(overlay.get(&insert_key).unwrap(), &(b"arf".to_vec(), 2)); assert_eq!(overlay.get(&insert_key).unwrap(), &(DBValue::from_slice(b"arf"), 2));
} }

19
util/src/nibbleslice.rs
View File

@ -17,7 +17,7 @@
//! Nibble-orientated view onto byte-slice, allowing nibble-precision offsets. //! Nibble-orientated view onto byte-slice, allowing nibble-precision offsets.
use std::cmp::*; use std::cmp::*;
use std::fmt; use std::fmt;
use bytes::*; use elastic_array::ElasticArray36;
/// Nibble-orientated view onto byte-slice, allowing nibble-precision offsets. /// Nibble-orientated view onto byte-slice, allowing nibble-precision offsets.
/// ///
@ -149,9 +149,9 @@ impl<'a, 'view> NibbleSlice<'a> where 'a: 'view {
} }
/// Encode while nibble slice in prefixed hex notation, noting whether it `is_leaf`. /// Encode while nibble slice in prefixed hex notation, noting whether it `is_leaf`.
pub fn encoded(&self, is_leaf: bool) -> Bytes { pub fn encoded(&self, is_leaf: bool) -> ElasticArray36<u8> {
let l = self.len(); let l = self.len();
let mut r = Bytes::with_capacity(l / 2 + 1); let mut r = ElasticArray36::new();
let mut i = l % 2; let mut i = l % 2;
r.push(if i == 1 {0x10 + self.at(0)} else {0} + if is_leaf {0x20} else {0}); r.push(if i == 1 {0x10 + self.at(0)} else {0} + if is_leaf {0x20} else {0});
while i < l { while i < l {
@ -163,9 +163,9 @@ impl<'a, 'view> NibbleSlice<'a> where 'a: 'view {
/// Encode only the leftmost `n` bytes of the nibble slice in prefixed hex notation, /// Encode only the leftmost `n` bytes of the nibble slice in prefixed hex notation,
/// noting whether it `is_leaf`. /// noting whether it `is_leaf`.
pub fn encoded_leftmost(&self, n: usize, is_leaf: bool) -> Bytes { pub fn encoded_leftmost(&self, n: usize, is_leaf: bool) -> ElasticArray36<u8> {
let l = min(self.len(), n); let l = min(self.len(), n);
let mut r = Bytes::with_capacity(l / 2 + 1); let mut r = ElasticArray36::new();
let mut i = l % 2; let mut i = l % 2;
r.push(if i == 1 {0x10 + self.at(0)} else {0} + if is_leaf {0x20} else {0}); r.push(if i == 1 {0x10 + self.at(0)} else {0} + if is_leaf {0x20} else {0});
while i < l { while i < l {
@ -212,6 +212,7 @@ impl<'a> fmt::Debug for NibbleSlice<'a> {
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::NibbleSlice; use super::NibbleSlice;
use elastic_array::ElasticArray36;
static D: &'static [u8;3] = &[0x01u8, 0x23, 0x45]; static D: &'static [u8;3] = &[0x01u8, 0x23, 0x45];
#[test] #[test]
@ -254,10 +255,10 @@ mod tests {
#[test] #[test]
fn encoded() { fn encoded() {
let n = NibbleSlice::new(D); let n = NibbleSlice::new(D);
assert_eq!(n.encoded(false), &[0x00, 0x01, 0x23, 0x45]); assert_eq!(n.encoded(false), ElasticArray36::from_slice(&[0x00, 0x01, 0x23, 0x45]));
assert_eq!(n.encoded(true), &[0x20, 0x01, 0x23, 0x45]); assert_eq!(n.encoded(true), ElasticArray36::from_slice(&[0x20, 0x01, 0x23, 0x45]));
assert_eq!(n.mid(1).encoded(false), &[0x11, 0x23, 0x45]); assert_eq!(n.mid(1).encoded(false), ElasticArray36::from_slice(&[0x11, 0x23, 0x45]));
assert_eq!(n.mid(1).encoded(true), &[0x31, 0x23, 0x45]); assert_eq!(n.mid(1).encoded(true), ElasticArray36::from_slice(&[0x31, 0x23, 0x45]));
} }
#[test] #[test]

81
util/src/overlaydb.rs
View File

@ -18,7 +18,6 @@
use error::*; use error::*;
use hash::*; use hash::*;
use bytes::*;
use rlp::*; use rlp::*;
use hashdb::*; use hashdb::*;
use memorydb::*; use memorydb::*;
@ -101,21 +100,21 @@ impl OverlayDB {
pub fn commit_refs(&self, key: &H256) -> i32 { self.overlay.raw(key).map_or(0, |(_, refs)| refs) } pub fn commit_refs(&self, key: &H256) -> i32 { self.overlay.raw(key).map_or(0, |(_, refs)| refs) }
/// Get the refs and value of the given key. /// Get the refs and value of the given key.
fn payload(&self, key: &H256) -> Option<(Bytes, u32)> { fn payload(&self, key: &H256) -> Option<(DBValue, u32)> {
self.backing.get(self.column, key) self.backing.get(self.column, key)
.expect("Low-level database error. Some issue with your hard disk?") .expect("Low-level database error. Some issue with your hard disk?")
.map(|d| { .map(|d| {
let r = Rlp::new(&d); let r = Rlp::new(&d);
(r.at(1).as_val(), r.at(0).as_val()) (DBValue::from_slice(r.at(1).data()), r.at(0).as_val())
}) })
} }
/// Put the refs and value of the given key, possibly deleting it from the db. /// Put the refs and value of the given key, possibly deleting it from the db.
fn put_payload_in_batch(&self, batch: &mut DBTransaction, key: &H256, payload: (Bytes, u32)) -> bool { fn put_payload_in_batch(&self, batch: &mut DBTransaction, key: &H256, payload: (DBValue, u32)) -> bool {
if payload.1 > 0 { if payload.1 > 0 {
let mut s = RlpStream::new_list(2); let mut s = RlpStream::new_list(2);
s.append(&payload.1); s.append(&payload.1);
s.append(&payload.0); s.append(&&*payload.0);
batch.put(self.column, key, s.as_raw()); batch.put(self.column, key, s.as_raw());
false false
} else { } else {
@ -140,29 +139,31 @@ impl HashDB for OverlayDB {
} }
ret ret
} }
fn get(&self, key: &H256) -> Option<&[u8]> { fn get(&self, key: &H256) -> Option<DBValue> {
// return ok if positive; if negative, check backing - might be enough references there to make // return ok if positive; if negative, check backing - might be enough references there to make
// it positive again. // it positive again.
let k = self.overlay.raw(key); let k = self.overlay.raw(key);
match k { let memrc = {
Some((d, rc)) if rc > 0 => Some(d), if let Some((d, rc)) = k {
_ => { if rc > 0 { return Some(d); }
let memrc = k.map_or(0, |(_, rc)| rc); rc
match self.payload(key) { } else {
Some(x) => { 0
let (d, rc) = x; }
if rc as i32 + memrc > 0 { };
Some(self.overlay.denote(key, d).0) match self.payload(key) {
} Some(x) => {
else { let (d, rc) = x;
None if rc as i32 + memrc > 0 {
} Some(d)
} }
// Replace above match arm with this once https://github.com/rust-lang/rust/issues/15287 is done. else {
//Some((d, rc)) if rc + memrc > 0 => Some(d), None
_ => None,
} }
} }
// Replace above match arm with this once https://github.com/rust-lang/rust/issues/15287 is done.
//Some((d, rc)) if rc + memrc > 0 => Some(d),
_ => None,
} }
} }
fn contains(&self, key: &H256) -> bool { fn contains(&self, key: &H256) -> bool {
@ -186,7 +187,7 @@ impl HashDB for OverlayDB {
} }
} }
fn insert(&mut self, value: &[u8]) -> H256 { self.overlay.insert(value) } fn insert(&mut self, value: &[u8]) -> H256 { self.overlay.insert(value) }
fn emplace(&mut self, key: H256, value: Bytes) { self.overlay.emplace(key, value); } fn emplace(&mut self, key: H256, value: DBValue) { self.overlay.emplace(key, value); }
fn remove(&mut self, key: &H256) { self.overlay.remove(key); } fn remove(&mut self, key: &H256) { self.overlay.remove(key); }
} }
@ -211,7 +212,7 @@ fn overlaydb_revert() {
fn overlaydb_overlay_insert_and_remove() { fn overlaydb_overlay_insert_and_remove() {
let mut trie = OverlayDB::new_temp(); let mut trie = OverlayDB::new_temp();
let h = trie.insert(b"hello world"); let h = trie.insert(b"hello world");
assert_eq!(trie.get(&h).unwrap(), b"hello world"); assert_eq!(trie.get(&h).unwrap(), DBValue::from_slice(b"hello world"));
trie.remove(&h); trie.remove(&h);
assert_eq!(trie.get(&h), None); assert_eq!(trie.get(&h), None);
} }
@ -220,11 +221,11 @@ fn overlaydb_overlay_insert_and_remove() {
fn overlaydb_backing_insert_revert() { fn overlaydb_backing_insert_revert() {
let mut trie = OverlayDB::new_temp(); let mut trie = OverlayDB::new_temp();
let h = trie.insert(b"hello world"); let h = trie.insert(b"hello world");
assert_eq!(trie.get(&h).unwrap(), b"hello world"); assert_eq!(trie.get(&h).unwrap(), DBValue::from_slice(b"hello world"));
trie.commit().unwrap(); trie.commit().unwrap();
assert_eq!(trie.get(&h).unwrap(), b"hello world"); assert_eq!(trie.get(&h).unwrap(), DBValue::from_slice(b"hello world"));
trie.revert(); trie.revert();
assert_eq!(trie.get(&h).unwrap(), b"hello world"); assert_eq!(trie.get(&h).unwrap(), DBValue::from_slice(b"hello world"));
} }
#[test] #[test]
@ -248,7 +249,7 @@ fn overlaydb_backing_remove_revert() {
trie.remove(&h); trie.remove(&h);
assert_eq!(trie.get(&h), None); assert_eq!(trie.get(&h), None);
trie.revert(); trie.revert();
assert_eq!(trie.get(&h).unwrap(), b"hello world"); assert_eq!(trie.get(&h).unwrap(), DBValue::from_slice(b"hello world"));
} }
#[test] #[test]
@ -266,29 +267,29 @@ fn overlaydb_negative() {
fn overlaydb_complex() { fn overlaydb_complex() {
let mut trie = OverlayDB::new_temp(); let mut trie = OverlayDB::new_temp();
let hfoo = trie.insert(b"foo"); let hfoo = trie.insert(b"foo");
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
let hbar = trie.insert(b"bar"); let hbar = trie.insert(b"bar");
assert_eq!(trie.get(&hbar).unwrap(), b"bar"); assert_eq!(trie.get(&hbar).unwrap(), DBValue::from_slice(b"bar"));
trie.commit().unwrap(); trie.commit().unwrap();
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
assert_eq!(trie.get(&hbar).unwrap(), b"bar"); assert_eq!(trie.get(&hbar).unwrap(), DBValue::from_slice(b"bar"));
trie.insert(b"foo"); // two refs trie.insert(b"foo"); // two refs
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
trie.commit().unwrap(); trie.commit().unwrap();
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
assert_eq!(trie.get(&hbar).unwrap(), b"bar"); assert_eq!(trie.get(&hbar).unwrap(), DBValue::from_slice(b"bar"));
trie.remove(&hbar); // zero refs - delete trie.remove(&hbar); // zero refs - delete
assert_eq!(trie.get(&hbar), None); assert_eq!(trie.get(&hbar), None);
trie.remove(&hfoo); // one ref - keep trie.remove(&hfoo); // one ref - keep
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
trie.commit().unwrap(); trie.commit().unwrap();
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
trie.remove(&hfoo); // zero ref - would delete, but... trie.remove(&hfoo); // zero ref - would delete, but...
assert_eq!(trie.get(&hfoo), None); assert_eq!(trie.get(&hfoo), None);
trie.insert(b"foo"); // one ref - keep after all. trie.insert(b"foo"); // one ref - keep after all.
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
trie.commit().unwrap(); trie.commit().unwrap();
assert_eq!(trie.get(&hfoo).unwrap(), b"foo"); assert_eq!(trie.get(&hfoo).unwrap(), DBValue::from_slice(b"foo"));
trie.remove(&hfoo); // zero ref - delete trie.remove(&hfoo); // zero ref - delete
assert_eq!(trie.get(&hfoo), None); assert_eq!(trie.get(&hfoo), None);
trie.commit().unwrap(); // trie.commit().unwrap(); //

10
util/src/trie/fatdb.rs
View File

@ -16,7 +16,7 @@
use hash::H256; use hash::H256;
use sha3::Hashable; use sha3::Hashable;
use hashdb::HashDB; use hashdb::{HashDB, DBValue};
use super::{TrieDB, Trie, TrieDBIterator, TrieItem, Recorder}; use super::{TrieDB, Trie, TrieDBIterator, TrieItem, Recorder};
/// A `Trie` implementation which hashes keys and uses a generic `HashDB` backing database. /// A `Trie` implementation which hashes keys and uses a generic `HashDB` backing database.
@ -58,7 +58,7 @@ impl<'db> Trie for FatDB<'db> {
self.raw.contains(&key.sha3()) self.raw.contains(&key.sha3())
} }
fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<&'a [u8]>> fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<DBValue>>
where 'a: 'b, R: Recorder where 'a: 'b, R: Recorder
{ {
self.raw.get_recorded(&key.sha3(), rec) self.raw.get_recorded(&key.sha3(), rec)
@ -88,7 +88,7 @@ impl<'db> Iterator for FatDBIterator<'db> {
self.trie_iterator.next() self.trie_iterator.next()
.map(|res| .map(|res|
res.map(|(hash, value)| { res.map(|(hash, value)| {
(self.trie.db().get_aux(&hash).expect("Missing fatdb hash"), value) (self.trie.db().get_aux(&hash).expect("Missing fatdb hash").to_vec(), value)
}) })
) )
} }
@ -106,6 +106,6 @@ fn fatdb_to_trie() {
t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap(); t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap();
} }
let t = FatDB::new(&memdb, &root).unwrap(); let t = FatDB::new(&memdb, &root).unwrap();
assert_eq!(t.get(&[0x01u8, 0x23]).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&[0x01u8, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
assert_eq!(t.iter().unwrap().map(Result::unwrap).collect::<Vec<_>>(), vec![(vec![0x01u8, 0x23], &[0x01u8, 0x23] as &[u8])]); assert_eq!(t.iter().unwrap().map(Result::unwrap).collect::<Vec<_>>(), vec![(vec![0x01u8, 0x23], DBValue::from_slice(&[0x01u8, 0x23] as &[u8]))]);
} }

6
util/src/trie/fatdbmut.rs
View File

@ -16,7 +16,7 @@
use hash::H256; use hash::H256;
use sha3::Hashable; use sha3::Hashable;
use hashdb::HashDB; use hashdb::{HashDB, DBValue};
use super::{TrieDBMut, TrieMut}; use super::{TrieDBMut, TrieMut};
/// A mutable `Trie` implementation which hashes keys and uses a generic `HashDB` backing database. /// A mutable `Trie` implementation which hashes keys and uses a generic `HashDB` backing database.
@ -66,7 +66,7 @@ impl<'db> TrieMut for FatDBMut<'db> {
self.raw.contains(&key.sha3()) self.raw.contains(&key.sha3())
} }
fn get<'a, 'key>(&'a self, key: &'key [u8]) -> super::Result<Option<&'a [u8]>> fn get<'a, 'key>(&'a self, key: &'key [u8]) -> super::Result<Option<DBValue>>
where 'a: 'key where 'a: 'key
{ {
self.raw.get(&key.sha3()) self.raw.get(&key.sha3())
@ -98,5 +98,5 @@ fn fatdb_to_trie() {
t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap(); t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap();
} }
let t = TrieDB::new(&memdb, &root).unwrap(); let t = TrieDB::new(&memdb, &root).unwrap();
assert_eq!(t.get(&(&[0x01u8, 0x23]).sha3()).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&(&[0x01u8, 0x23]).sha3()).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
} }

8
util/src/trie/journal.rs
View File

@ -24,7 +24,7 @@ use hashdb::*;
/// Type of operation for the backing database - either a new node or a node deletion. /// Type of operation for the backing database - either a new node or a node deletion.
#[derive(Debug)] #[derive(Debug)]
enum Operation { enum Operation {
New(H256, Bytes), New(H256, DBValue),
Delete(H256), Delete(H256),
} }
@ -52,16 +52,16 @@ impl Journal {
/// Given the RLP that encodes a node, append a reference to that node `out` and leave `journal` /// Given the RLP that encodes a node, append a reference to that node `out` and leave `journal`
/// such that the reference is valid, once applied. /// such that the reference is valid, once applied.
pub fn new_node(&mut self, rlp: Bytes, out: &mut RlpStream) { pub fn new_node(&mut self, rlp: DBValue, out: &mut RlpStream) {
if rlp.len() >= 32 { if rlp.len() >= 32 {
let rlp_sha3 = rlp.sha3(); let rlp_sha3 = rlp.sha3();
trace!("new_node: reference node {:?} => {:?}", rlp_sha3, rlp.pretty()); trace!("new_node: reference node {:?} => {:?}", rlp_sha3, &*rlp);
out.append(&rlp_sha3); out.append(&rlp_sha3);
self.0.push(Operation::New(rlp_sha3, rlp)); self.0.push(Operation::New(rlp_sha3, rlp));
} }
else { else {
trace!("new_node: inline node {:?}", rlp.pretty()); trace!("new_node: inline node {:?}", &*rlp);
out.append_raw(&rlp, 1); out.append_raw(&rlp, 1);
} }
} }

12
util/src/trie/mod.rs
View File

@ -18,7 +18,7 @@
use std::fmt; use std::fmt;
use hash::H256; use hash::H256;
use hashdb::HashDB; use hashdb::{HashDB, DBValue};
/// Export the standardmap module. /// Export the standardmap module.
pub mod standardmap; pub mod standardmap;
@ -76,7 +76,7 @@ impl fmt::Display for TrieError {
pub type Result<T> = ::std::result::Result<T, Box<TrieError>>; pub type Result<T> = ::std::result::Result<T, Box<TrieError>>;
/// Trie-Item type. /// Trie-Item type.
pub type TrieItem<'a> = Result<(Vec<u8>, &'a [u8])>; pub type TrieItem<'a> = Result<(Vec<u8>, DBValue)>;
/// A key-value datastore implemented as a database-backed modified Merkle tree. /// A key-value datastore implemented as a database-backed modified Merkle tree.
pub trait Trie { pub trait Trie {
@ -92,13 +92,13 @@ pub trait Trie {
} }
/// What is the value of the given key in this trie? /// What is the value of the given key in this trie?
fn get<'a, 'key>(&'a self, key: &'key [u8]) -> Result<Option<&'a [u8]>> where 'a: 'key { fn get<'a, 'key>(&'a self, key: &'key [u8]) -> Result<Option<DBValue>> where 'a: 'key {
self.get_recorded(key, &mut recorder::NoOp) self.get_recorded(key, &mut recorder::NoOp)
} }
/// Query the value of the given key in this trie while recording visited nodes /// Query the value of the given key in this trie while recording visited nodes
/// to the given recorder. If the query fails, the nodes passed to the recorder are unspecified. /// to the given recorder. If the query fails, the nodes passed to the recorder are unspecified.
fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> Result<Option<&'a [u8]>> fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> Result<Option<DBValue>>
where 'a: 'b, R: Recorder; where 'a: 'b, R: Recorder;
/// Returns an iterator over elements of trie. /// Returns an iterator over elements of trie.
@ -119,7 +119,7 @@ pub trait TrieMut {
} }
/// What is the value of the given key in this trie? /// What is the value of the given key in this trie?
fn get<'a, 'key>(&'a self, key: &'key [u8]) -> Result<Option<&'a [u8]>> where 'a: 'key; fn get<'a, 'key>(&'a self, key: &'key [u8]) -> Result<Option<DBValue>> where 'a: 'key;
/// Insert a `key`/`value` pair into the trie. An `empty` value is equivalent to removing /// Insert a `key`/`value` pair into the trie. An `empty` value is equivalent to removing
/// `key` from the trie. /// `key` from the trie.
@ -188,7 +188,7 @@ impl<'db> Trie for TrieKinds<'db> {
wrapper!(self, contains, key) wrapper!(self, contains, key)
} }
fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], r: &'b mut R) -> Result<Option<&'a [u8]>> fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], r: &'b mut R) -> Result<Option<DBValue>>
where 'a: 'b, R: Recorder { where 'a: 'b, R: Recorder {
wrapper!(self, get_recorded, key, r) wrapper!(self, get_recorded, key, r)
} }

84
util/src/trie/node.rs
View File

@ -14,27 +14,51 @@
// You should have received a copy of the GNU General Public License // You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>. // along with Parity. If not, see <http://www.gnu.org/licenses/>.
use elastic_array::ElasticArray36;
use nibbleslice::*; use nibbleslice::*;
use bytes::*; use bytes::*;
use rlp::*; use rlp::*;
use super::journal::*; use super::journal::*;
use hashdb::DBValue;
/// Partial node key type.
pub type NodeKey = ElasticArray36<u8>;
/// Type of node in the trie and essential information thereof. /// Type of node in the trie and essential information thereof.
#[derive(Clone, Eq, PartialEq, Debug)] #[derive(Eq, PartialEq, Debug)]
pub enum Node<'a> { pub enum Node {
/// Null trie node; could be an empty root or an empty branch entry. /// Null trie node; could be an empty root or an empty branch entry.
Empty, Empty,
/// Leaf node; has key slice and value. Value may not be empty. /// Leaf node; has key slice and value. Value may not be empty.
Leaf(NibbleSlice<'a>, &'a [u8]), Leaf(NodeKey, DBValue),
/// Extension node; has key slice and node data. Data may not be null. /// Extension node; has key slice and node data. Data may not be null.
Extension(NibbleSlice<'a>, &'a [u8]), Extension(NodeKey, DBValue),
/// Branch node; has array of 16 child nodes (each possibly null) and an optional immediate node data. /// Branch node; has array of 16 child nodes (each possibly null) and an optional immediate node data.
Branch([&'a [u8]; 16], Option<&'a [u8]>) Branch([NodeKey; 16], Option<DBValue>)
} }
impl<'a> Node<'a> { impl Clone for Node {
fn clone(&self) -> Node {
match *self {
Node::Empty => Node::Empty,
Node::Leaf(ref k, ref v) => Node::Leaf(k.clone(), v.clone()),
Node::Extension(ref k, ref v) => Node::Extension(k.clone(), v.clone()),
Node::Branch(ref k, ref v) => {
let mut branch = [NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(),
NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(),
NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new()];
for i in 0 .. 16 {
branch[i] = k[i].clone();
}
Node::Branch(branch, v.clone())
}
}
}
}
impl Node {
/// Decode the `node_rlp` and return the Node. /// Decode the `node_rlp` and return the Node.
pub fn decoded(node_rlp: &'a [u8]) -> Node<'a> { pub fn decoded(node_rlp: &[u8]) -> Node {
let r = Rlp::new(node_rlp); let r = Rlp::new(node_rlp);
match r.prototype() { match r.prototype() {
// either leaf or extension - decode first item with NibbleSlice::??? // either leaf or extension - decode first item with NibbleSlice::???
@ -43,16 +67,18 @@ impl<'a> Node<'a> {
// if extension, second item is a node (either SHA3 to be looked up and // if extension, second item is a node (either SHA3 to be looked up and
// fed back into this function or inline RLP which can be fed back into this function). // fed back into this function or inline RLP which can be fed back into this function).
Prototype::List(2) => match NibbleSlice::from_encoded(r.at(0).data()) { Prototype::List(2) => match NibbleSlice::from_encoded(r.at(0).data()) {
(slice, true) => Node::Leaf(slice, r.at(1).data()), (slice, true) => Node::Leaf(slice.encoded(true), DBValue::from_slice(r.at(1).data())),
(slice, false) => Node::Extension(slice, r.at(1).as_raw()), (slice, false) => Node::Extension(slice.encoded(false), DBValue::from_slice(r.at(1).as_raw())),
}, },
// branch - first 16 are nodes, 17th is a value (or empty). // branch - first 16 are nodes, 17th is a value (or empty).
Prototype::List(17) => { Prototype::List(17) => {
let mut nodes: [&'a [u8]; 16] = [&[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[], &[]]; let mut nodes: [NodeKey; 16] = [NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(),
NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(),
NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new(), NodeKey::new()];
for i in 0..16 { for i in 0..16 {
nodes[i] = r.at(i).as_raw(); nodes[i] = NodeKey::from_slice(r.at(i).as_raw());
} }
Node::Branch(nodes, if r.at(16).is_empty() { None } else { Some(r.at(16).data()) }) Node::Branch(nodes, if r.at(16).is_empty() { None } else { Some(DBValue::from_slice(r.at(16).data())) })
}, },
// an empty branch index. // an empty branch index.
Prototype::Data(0) => Node::Empty, Prototype::Data(0) => Node::Empty,
@ -69,23 +95,23 @@ impl<'a> Node<'a> {
match *self { match *self {
Node::Leaf(ref slice, ref value) => { Node::Leaf(ref slice, ref value) => {
let mut stream = RlpStream::new_list(2); let mut stream = RlpStream::new_list(2);
stream.append(&slice.encoded(true)); stream.append(&&**slice);
stream.append(value); stream.append(&&**value);
stream.out() stream.out()
}, },
Node::Extension(ref slice, raw_rlp) => { Node::Extension(ref slice, ref raw_rlp) => {
let mut stream = RlpStream::new_list(2); let mut stream = RlpStream::new_list(2);
stream.append(&slice.encoded(false)); stream.append(&&**slice);
stream.append_raw(raw_rlp, 1); stream.append_raw(&&*raw_rlp, 1);
stream.out() stream.out()
}, },
Node::Branch(ref nodes, ref value) => { Node::Branch(ref nodes, ref value) => {
let mut stream = RlpStream::new_list(17); let mut stream = RlpStream::new_list(17);
for i in 0..16 { for i in 0..16 {
stream.append_raw(nodes[i], 1); stream.append_raw(&*nodes[i], 1);
} }
match *value { match *value {
Some(n) => { stream.append(&n); }, Some(ref n) => { stream.append(&&**n); },
None => { stream.append_empty_data(); }, None => { stream.append_empty_data(); },
} }
stream.out() stream.out()
@ -100,26 +126,26 @@ impl<'a> Node<'a> {
/// Encode the node, adding it to `journal` if necessary and return the RLP valid for /// Encode the node, adding it to `journal` if necessary and return the RLP valid for
/// insertion into a parent node. /// insertion into a parent node.
pub fn encoded_and_added(&self, journal: &mut Journal) -> Bytes { pub fn encoded_and_added(&self, journal: &mut Journal) -> DBValue {
let mut stream = RlpStream::new(); let mut stream = RlpStream::new();
match *self { match *self {
Node::Leaf(ref slice, ref value) => { Node::Leaf(ref slice, ref value) => {
stream.begin_list(2); stream.begin_list(2);
stream.append(&slice.encoded(true)); stream.append(&&**slice);
stream.append(value); stream.append(&&**value);
}, },
Node::Extension(ref slice, raw_rlp) => { Node::Extension(ref slice, ref raw_rlp) => {
stream.begin_list(2); stream.begin_list(2);
stream.append(&slice.encoded(false)); stream.append(&&**slice);
stream.append_raw(raw_rlp, 1); stream.append_raw(&&**raw_rlp, 1);
}, },
Node::Branch(ref nodes, ref value) => { Node::Branch(ref nodes, ref value) => {
stream.begin_list(17); stream.begin_list(17);
for i in 0..16 { for i in 0..16 {
stream.append_raw(nodes[i], 1); stream.append_raw(&*nodes[i], 1);
} }
match *value { match *value {
Some(n) => { stream.append(&n); }, Some(ref n) => { stream.append(&&**n); },
None => { stream.append_empty_data(); }, None => { stream.append_empty_data(); },
} }
}, },
@ -127,13 +153,13 @@ impl<'a> Node<'a> {
stream.append_empty_data(); stream.append_empty_data();
} }
} }
let node = stream.out(); let node = DBValue::from_slice(stream.as_raw());
match node.len() { match node.len() {
0 ... 31 => node, 0 ... 31 => node,
_ => { _ => {
let mut stream = RlpStream::new(); let mut stream = RlpStream::new();
journal.new_node(node, &mut stream); journal.new_node(node, &mut stream);
stream.out() DBValue::from_slice(stream.as_raw())
} }
} }
} }

6
util/src/trie/sectriedb.rs
View File

@ -16,7 +16,7 @@
use hash::H256; use hash::H256;
use sha3::Hashable; use sha3::Hashable;
use hashdb::HashDB; use hashdb::{HashDB, DBValue};
use super::triedb::TrieDB; use super::triedb::TrieDB;
use super::{Trie, TrieItem, Recorder}; use super::{Trie, TrieItem, Recorder};
@ -59,7 +59,7 @@ impl<'db> Trie for SecTrieDB<'db> {
self.raw.contains(&key.sha3()) self.raw.contains(&key.sha3())
} }
fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<&'a [u8]>> fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<DBValue>>
where 'a: 'b, R: Recorder where 'a: 'b, R: Recorder
{ {
self.raw.get_recorded(&key.sha3(), rec) self.raw.get_recorded(&key.sha3(), rec)
@ -79,5 +79,5 @@ fn trie_to_sectrie() {
t.insert(&(&[0x01u8, 0x23]).sha3(), &[0x01u8, 0x23]).unwrap(); t.insert(&(&[0x01u8, 0x23]).sha3(), &[0x01u8, 0x23]).unwrap();
} }
let t = SecTrieDB::new(&memdb, &root).unwrap(); let t = SecTrieDB::new(&memdb, &root).unwrap();
assert_eq!(t.get(&[0x01u8, 0x23]).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&[0x01u8, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
} }

6
util/src/trie/sectriedbmut.rs
View File

@ -16,7 +16,7 @@
use hash::H256; use hash::H256;
use sha3::Hashable; use sha3::Hashable;
use hashdb::HashDB; use hashdb::{HashDB, DBValue};
use super::triedbmut::TrieDBMut; use super::triedbmut::TrieDBMut;
use super::TrieMut; use super::TrieMut;
@ -62,7 +62,7 @@ impl<'db> TrieMut for SecTrieDBMut<'db> {
self.raw.contains(&key.sha3()) self.raw.contains(&key.sha3())
} }
fn get<'a, 'key>(&'a self, key: &'key [u8]) -> super::Result<Option<&'a [u8]>> fn get<'a, 'key>(&'a self, key: &'key [u8]) -> super::Result<Option<DBValue>>
where 'a: 'key where 'a: 'key
{ {
self.raw.get(&key.sha3()) self.raw.get(&key.sha3())
@ -90,5 +90,5 @@ fn sectrie_to_trie() {
t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap(); t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap();
} }
let t = TrieDB::new(&memdb, &root).unwrap(); let t = TrieDB::new(&memdb, &root).unwrap();
assert_eq!(t.get(&(&[0x01u8, 0x23]).sha3()).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&(&[0x01u8, 0x23]).sha3()).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
} }

85
util/src/trie/triedb.rs
View File

@ -44,7 +44,7 @@ use super::{Trie, TrieItem, TrieError};
/// TrieDBMut::new(&mut memdb, &mut root).insert(b"foo", b"bar").unwrap(); /// TrieDBMut::new(&mut memdb, &mut root).insert(b"foo", b"bar").unwrap();
/// let t = TrieDB::new(&memdb, &root).unwrap(); /// let t = TrieDB::new(&memdb, &root).unwrap();
/// assert!(t.contains(b"foo").unwrap()); /// assert!(t.contains(b"foo").unwrap());
/// assert_eq!(t.get(b"foo").unwrap().unwrap(), b"bar"); /// assert_eq!(t.get(b"foo").unwrap().unwrap(), DBValue::from_slice(b"bar"));
/// assert!(t.db_items_remaining().unwrap().is_empty()); /// assert!(t.db_items_remaining().unwrap().is_empty());
/// } /// }
/// ``` /// ```
@ -119,8 +119,8 @@ impl<'db> TrieDB<'db> {
}; };
match node { match node {
Node::Extension(_, payload) => try!(handle_payload(payload)), Node::Extension(_, ref payload) => try!(handle_payload(payload)),
Node::Branch(payloads, _) => for payload in &payloads { try!(handle_payload(payload)) }, Node::Branch(ref payloads, _) => for payload in payloads { try!(handle_payload(payload)) },
_ => {}, _ => {},
} }
@ -129,18 +129,18 @@ impl<'db> TrieDB<'db> {
/// Get the root node's RLP. /// Get the root node's RLP.
fn root_node<R: Recorder>(&self, r: &mut R) -> super::Result<Node> { fn root_node<R: Recorder>(&self, r: &mut R) -> super::Result<Node> {
self.root_data(r).map(Node::decoded) self.root_data(r).map(|d| Node::decoded(&d))
} }
/// Get the data of the root node. /// Get the data of the root node.
fn root_data<'a, R: 'a + Recorder>(&self, r: &'a mut R) -> super::Result<&[u8]> { fn root_data<'a, R: 'a + Recorder>(&self, r: &'a mut R) -> super::Result<DBValue> {
self.db.get(self.root).ok_or_else(|| Box::new(TrieError::InvalidStateRoot(*self.root))) self.db.get(self.root).ok_or_else(|| Box::new(TrieError::InvalidStateRoot(*self.root)))
.map(|node| { r.record(self.root, node, 0); node }) .map(|node| { r.record(self.root, &*node, 0); node })
} }
/// Get the root node as a `Node`. /// Get the root node as a `Node`.
fn get_node<'a, R: 'a + Recorder>(&'db self, node: &'db [u8], r: &'a mut R, depth: u32) -> super::Result<Node> { fn get_node<'a, R: 'a + Recorder>(&'db self, node: &'db [u8], r: &'a mut R, depth: u32) -> super::Result<Node> {
self.get_raw_or_lookup(node, r, depth).map(Node::decoded) self.get_raw_or_lookup(node, r, depth).map(|n| Node::decoded(&n))
} }
/// Indentation helper for `formal_all`. /// Indentation helper for `formal_all`.
@ -155,20 +155,20 @@ impl<'db> TrieDB<'db> {
fn fmt_all(&self, node: Node, f: &mut fmt::Formatter, deepness: usize) -> fmt::Result { fn fmt_all(&self, node: Node, f: &mut fmt::Formatter, deepness: usize) -> fmt::Result {
match node { match node {
Node::Leaf(slice, value) => try!(writeln!(f, "'{:?}: {:?}.", slice, value.pretty())), Node::Leaf(slice, value) => try!(writeln!(f, "'{:?}: {:?}.", slice, value.pretty())),
Node::Extension(ref slice, item) => { Node::Extension(ref slice, ref item) => {
try!(write!(f, "'{:?} ", slice)); try!(write!(f, "'{:?} ", slice));
if let Ok(node) = self.get_node(item, &mut NoOp, 0) { if let Ok(node) = self.get_node(&*item, &mut NoOp, 0) {
try!(self.fmt_all(node, f, deepness)); try!(self.fmt_all(node, f, deepness));
} }
}, },
Node::Branch(ref nodes, ref value) => { Node::Branch(ref nodes, ref value) => {
try!(writeln!(f, "")); try!(writeln!(f, ""));
if let Some(v) = *value { if let Some(ref v) = *value {
try!(self.fmt_indent(f, deepness + 1)); try!(self.fmt_indent(f, deepness + 1));
try!(writeln!(f, "=: {:?}", v.pretty())) try!(writeln!(f, "=: {:?}", v.pretty()))
} }
for i in 0..16 { for i in 0..16 {
match self.get_node(nodes[i], &mut NoOp, 0) { match self.get_node(&*nodes[i], &mut NoOp, 0) {
Ok(Node::Empty) => {}, Ok(Node::Empty) => {},
Ok(n) => { Ok(n) => {
try!(self.fmt_indent(f, deepness + 1)); try!(self.fmt_indent(f, deepness + 1));
@ -190,11 +190,11 @@ impl<'db> TrieDB<'db> {
} }
/// Return optional data for a key given as a `NibbleSlice`. Returns `None` if no data exists. /// Return optional data for a key given as a `NibbleSlice`. Returns `None` if no data exists.
fn do_lookup<'key, R: 'key>(&'db self, key: &NibbleSlice<'key>, r: &'key mut R) -> super::Result<Option<&'db [u8]>> fn do_lookup<'key, R: 'key>(&'db self, key: &NibbleSlice<'key>, r: &'key mut R) -> super::Result<Option<DBValue>>
where 'db: 'key, R: Recorder where 'db: 'key, R: Recorder
{ {
let root_rlp = try!(self.root_data(r)); let root_rlp = try!(self.root_data(r));
self.get_from_node(root_rlp, key, r, 1) self.get_from_node(&root_rlp, key, r, 1)
} }
/// Recursible function to retrieve the value given a `node` and a partial `key`. `None` if no /// Recursible function to retrieve the value given a `node` and a partial `key`. `None` if no
@ -207,18 +207,23 @@ impl<'db> TrieDB<'db> {
key: &NibbleSlice<'key>, key: &NibbleSlice<'key>,
r: &'key mut R, r: &'key mut R,
d: u32 d: u32
) -> super::Result<Option<&'db [u8]>> where 'db: 'key, R: Recorder { ) -> super::Result<Option<DBValue>> where 'db: 'key, R: Recorder {
match Node::decoded(node) { match Node::decoded(node) {
Node::Leaf(ref slice, value) if key == slice => Ok(Some(value)), Node::Leaf(ref slice, ref value) if NibbleSlice::from_encoded(slice).0 == *key => Ok(Some(value.clone())),
Node::Extension(ref slice, item) if key.starts_with(slice) => { Node::Extension(ref slice, ref item) => {
let data = try!(self.get_raw_or_lookup(item, r, d)); let slice = &NibbleSlice::from_encoded(slice).0;
self.get_from_node(data, &key.mid(slice.len()), r, d + 1) if key.starts_with(slice) {
let data = try!(self.get_raw_or_lookup(&*item, r, d));
self.get_from_node(&data, &key.mid(slice.len()), r, d + 1)
} else {
Ok(None)
}
}, },
Node::Branch(ref nodes, value) => match key.is_empty() { Node::Branch(ref nodes, ref value) => match key.is_empty() {
true => Ok(value), true => Ok(value.clone()),
false => { false => {
let node = try!(self.get_raw_or_lookup(nodes[key.at(0) as usize], r, d)); let node = try!(self.get_raw_or_lookup(&*nodes[key.at(0) as usize], r, d));
self.get_from_node(node, &key.mid(1), r, d + 1) self.get_from_node(&node, &key.mid(1), r, d + 1)
} }
}, },
_ => Ok(None) _ => Ok(None)
@ -228,16 +233,16 @@ impl<'db> TrieDB<'db> {
/// Given some node-describing data `node`, return the actual node RLP. /// Given some node-describing data `node`, return the actual node RLP.
/// This could be a simple identity operation in the case that the node is sufficiently small, but /// This could be a simple identity operation in the case that the node is sufficiently small, but
/// may require a database lookup. /// may require a database lookup.
fn get_raw_or_lookup<R: Recorder>(&'db self, node: &'db [u8], rec: &mut R, d: u32) -> super::Result<&'db [u8]> { fn get_raw_or_lookup<R: Recorder>(&'db self, node: &'db [u8], rec: &mut R, d: u32) -> super::Result<DBValue> {
// check if its sha3 + len // check if its sha3 + len
let r = Rlp::new(node); let r = Rlp::new(node);
match r.is_data() && r.size() == 32 { match r.is_data() && r.size() == 32 {
true => { true => {
let key = r.as_val::<H256>(); let key = r.as_val::<H256>();
self.db.get(&key).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(key))) self.db.get(&key).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(key)))
.map(|raw| { rec.record(&key, raw, d); raw }) .map(|raw| { rec.record(&key, &raw, d); raw })
} }
false => Ok(node) false => Ok(DBValue::from_slice(node))
} }
} }
} }
@ -251,12 +256,12 @@ enum Status {
} }
#[derive(Clone, Eq, PartialEq)] #[derive(Clone, Eq, PartialEq)]
struct Crumb<'a> { struct Crumb {
node: Node<'a>, node: Node,
status: Status, status: Status,
} }
impl<'a> Crumb<'a> { impl Crumb {
/// Move on to next status in the node's sequence. /// Move on to next status in the node's sequence.
fn increment(&mut self) { fn increment(&mut self) {
self.status = match (&self.status, &self.node) { self.status = match (&self.status, &self.node) {
@ -273,7 +278,7 @@ impl<'a> Crumb<'a> {
#[derive(Clone)] #[derive(Clone)]
pub struct TrieDBIterator<'a> { pub struct TrieDBIterator<'a> {
db: &'a TrieDB<'a>, db: &'a TrieDB<'a>,
trail: Vec<Crumb<'a>>, trail: Vec<Crumb>,
key_nibbles: Bytes, key_nibbles: Bytes,
} }
@ -286,18 +291,18 @@ impl<'a> TrieDBIterator<'a> {
key_nibbles: Vec::new(), key_nibbles: Vec::new(),
}; };
try!(db.root_data(&mut NoOp).and_then(|root| r.descend(root))); try!(db.root_data(&mut NoOp).and_then(|root| r.descend(&root)));
Ok(r) Ok(r)
} }
/// Descend into a payload. /// Descend into a payload.
fn descend(&mut self, d: &'a [u8]) -> super::Result<()> { fn descend(&mut self, d: &[u8]) -> super::Result<()> {
self.trail.push(Crumb { self.trail.push(Crumb {
status: Status::Entering, status: Status::Entering,
node: try!(self.db.get_node(d, &mut NoOp, 0)), node: try!(self.db.get_node(d, &mut NoOp, 0)),
}); });
match self.trail.last().expect("just pushed item; qed").node { match self.trail.last().expect("just pushed item; qed").node {
Node::Leaf(n, _) | Node::Extension(n, _) => { self.key_nibbles.extend(n.iter()); }, Node::Leaf(ref n, _) | Node::Extension(ref n, _) => { self.key_nibbles.extend(NibbleSlice::from_encoded(n).0.iter()); },
_ => {} _ => {}
} }
@ -325,7 +330,7 @@ impl<'a> Iterator for TrieDBIterator<'a> {
match n { match n {
Node::Leaf(n, _) | Node::Extension(n, _) => { Node::Leaf(n, _) | Node::Extension(n, _) => {
let l = self.key_nibbles.len(); let l = self.key_nibbles.len();
self.key_nibbles.truncate(l - n.len()); self.key_nibbles.truncate(l - NibbleSlice::from_encoded(&*n).0.len());
}, },
Node::Branch(_, _) => { self.key_nibbles.pop(); }, Node::Branch(_, _) => { self.key_nibbles.pop(); },
_ => {} _ => {}
@ -337,19 +342,19 @@ impl<'a> Iterator for TrieDBIterator<'a> {
return Some(Ok((self.key(), v))); return Some(Ok((self.key(), v)));
}, },
(Status::At, Node::Extension(_, d)) => { (Status::At, Node::Extension(_, d)) => {
if let Err(e) = self.descend(d) { if let Err(e) = self.descend(&*d) {
return Some(Err(e)); return Some(Err(e));
} }
// continue // continue
}, },
(Status::At, Node::Branch(_, _)) => {}, (Status::At, Node::Branch(_, _)) => {},
(Status::AtChild(i), Node::Branch(children, _)) if children[i].len() > 0 => { (Status::AtChild(i), Node::Branch(ref children, _)) if children[i].len() > 0 => {
match i { match i {
0 => self.key_nibbles.push(0), 0 => self.key_nibbles.push(0),
i => *self.key_nibbles.last_mut() i => *self.key_nibbles.last_mut()
.expect("pushed as 0; moves sequentially; removed afterwards; qed") = i as u8, .expect("pushed as 0; moves sequentially; removed afterwards; qed") = i as u8,
} }
if let Err(e) = self.descend(children[i]) { if let Err(e) = self.descend(&*children[i]) {
return Some(Err(e)); return Some(Err(e));
} }
// continue // continue
@ -373,7 +378,7 @@ impl<'db> Trie for TrieDB<'db> {
fn root(&self) -> &H256 { self.root } fn root(&self) -> &H256 { self.root }
fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<&'a [u8]>> fn get_recorded<'a, 'b, R: 'b>(&'a self, key: &'b [u8], rec: &'b mut R) -> super::Result<Option<DBValue>>
where 'a: 'b, R: Recorder where 'a: 'b, R: Recorder
{ {
self.do_lookup(&NibbleSlice::new(key), rec) self.do_lookup(&NibbleSlice::new(key), rec)
@ -384,7 +389,7 @@ impl<'db> fmt::Debug for TrieDB<'db> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
try!(writeln!(f, "c={:?} [", self.hash_count)); try!(writeln!(f, "c={:?} [", self.hash_count));
let root_rlp = self.db.get(self.root).expect("Trie root not found!"); let root_rlp = self.db.get(self.root).expect("Trie root not found!");
try!(self.fmt_all(Node::decoded(root_rlp), f, 0)); try!(self.fmt_all(Node::decoded(&root_rlp), f, 0));
writeln!(f, "]") writeln!(f, "]")
} }
} }
@ -395,7 +400,7 @@ fn iterator() {
use super::TrieMut; use super::TrieMut;
use super::triedbmut::*; use super::triedbmut::*;
let d = vec![ &b"A"[..], &b"AA"[..], &b"AB"[..], &b"B"[..] ]; let d = vec![ DBValue::from_slice(b"A"), DBValue::from_slice(b"AA"), DBValue::from_slice(b"AB"), DBValue::from_slice(b"B") ];
let mut memdb = MemoryDB::new(); let mut memdb = MemoryDB::new();
let mut root = H256::new(); let mut root = H256::new();
@ -407,6 +412,6 @@ fn iterator() {
} }
let t = TrieDB::new(&memdb, &root).unwrap(); let t = TrieDB::new(&memdb, &root).unwrap();
assert_eq!(d.iter().map(|i|i.to_vec()).collect::<Vec<_>>(), t.iter().unwrap().map(|x| x.unwrap().0).collect::<Vec<_>>()); assert_eq!(d.iter().map(|i| i.clone().to_vec()).collect::<Vec<_>>(), t.iter().unwrap().map(|x| x.unwrap().0).collect::<Vec<_>>());
assert_eq!(d, t.iter().unwrap().map(|x| x.unwrap().1).collect::<Vec<_>>()); assert_eq!(d, t.iter().unwrap().map(|x| x.unwrap().1).collect::<Vec<_>>());
} }

96
util/src/trie/triedbmut.rs
View File

@ -18,12 +18,14 @@
use super::{TrieError, TrieMut}; use super::{TrieError, TrieMut};
use super::node::Node as RlpNode; use super::node::Node as RlpNode;
use super::node::NodeKey;
use ::{Bytes, HashDB, H256}; use ::{HashDB, H256};
use ::bytes::ToPretty; use ::bytes::ToPretty;
use ::nibbleslice::NibbleSlice; use ::nibbleslice::NibbleSlice;
use ::rlp::{Rlp, RlpStream, View, Stream}; use ::rlp::{Rlp, RlpStream, View, Stream};
use ::sha3::SHA3_NULL_RLP; use ::sha3::SHA3_NULL_RLP;
use hashdb::DBValue;
use elastic_array::ElasticArray1024; use elastic_array::ElasticArray1024;
@ -72,14 +74,14 @@ enum Node {
/// A leaf node contains the end of a key and a value. /// A leaf node contains the end of a key and a value.
/// This key is encoded from a `NibbleSlice`, meaning it contains /// This key is encoded from a `NibbleSlice`, meaning it contains
/// a flag indicating it is a leaf. /// a flag indicating it is a leaf.
Leaf(Bytes, Bytes), Leaf(NodeKey, DBValue),
/// An extension contains a shared portion of a key and a child node. /// An extension contains a shared portion of a key and a child node.
/// The shared portion is encoded from a `NibbleSlice` meaning it contains /// The shared portion is encoded from a `NibbleSlice` meaning it contains
/// a flag indicating it is an extension. /// a flag indicating it is an extension.
/// The child node is always a branch. /// The child node is always a branch.
Extension(Bytes, NodeHandle), Extension(NodeKey, NodeHandle),
/// A branch has up to 16 children and an optional value. /// A branch has up to 16 children and an optional value.
Branch(Box<[Option<NodeHandle>; 16]>, Option<Bytes>) Branch(Box<[Option<NodeHandle>; 16]>, Option<DBValue>)
} }
impl Node { impl Node {
@ -98,21 +100,18 @@ impl Node {
fn from_rlp(rlp: &[u8], db: &HashDB, storage: &mut NodeStorage) -> Self { fn from_rlp(rlp: &[u8], db: &HashDB, storage: &mut NodeStorage) -> Self {
match RlpNode::decoded(rlp) { match RlpNode::decoded(rlp) {
RlpNode::Empty => Node::Empty, RlpNode::Empty => Node::Empty,
RlpNode::Leaf(k, v) => Node::Leaf(k.encoded(true), v.to_owned()), RlpNode::Leaf(k, v) => Node::Leaf(k, v),
RlpNode::Extension(partial, cb) => { RlpNode::Extension(key, cb) => {
let key = partial.encoded(false); Node::Extension(key, Self::inline_or_hash(&*cb, db, storage))
Node::Extension(key, Self::inline_or_hash(cb, db, storage))
} }
RlpNode::Branch(children_rlp, v) => { RlpNode::Branch(children_rlp, val) => {
let val = v.map(|x| x.to_owned());
let mut children = empty_children(); let mut children = empty_children();
for i in 0..16 { for i in 0..16 {
let raw = children_rlp[i]; let raw = &children_rlp[i];
let child_rlp = Rlp::new(raw); let child_rlp = Rlp::new(&*raw);
if !child_rlp.is_empty() { if !child_rlp.is_empty() {
children[i] = Some(Self::inline_or_hash(raw, db, storage)); children[i] = Some(Self::inline_or_hash(&*raw, db, storage));
} }
} }
@ -134,13 +133,13 @@ impl Node {
} }
Node::Leaf(partial, value) => { Node::Leaf(partial, value) => {
let mut stream = RlpStream::new_list(2); let mut stream = RlpStream::new_list(2);
stream.append(&partial); stream.append(&&*partial);
stream.append(&value); stream.append(&&*value);
stream.drain() stream.drain()
} }
Node::Extension(partial, child) => { Node::Extension(partial, child) => {
let mut stream = RlpStream::new_list(2); let mut stream = RlpStream::new_list(2);
stream.append(&partial); stream.append(&&*partial);
child_cb(child, &mut stream); child_cb(child, &mut stream);
stream.drain() stream.drain()
} }
@ -154,7 +153,7 @@ impl Node {
} }
} }
if let Some(value) = value { if let Some(value) = value {
stream.append(&value); stream.append(&&*value);
} else { } else {
stream.append_empty_data(); stream.append_empty_data();
} }
@ -276,7 +275,7 @@ impl<'a> Index<&'a StorageHandle> for NodeStorage {
/// assert_eq!(*t.root(), ::util::sha3::SHA3_NULL_RLP); /// assert_eq!(*t.root(), ::util::sha3::SHA3_NULL_RLP);
/// t.insert(b"foo", b"bar").unwrap(); /// t.insert(b"foo", b"bar").unwrap();
/// assert!(t.contains(b"foo").unwrap()); /// assert!(t.contains(b"foo").unwrap());
/// assert_eq!(t.get(b"foo").unwrap().unwrap(), b"bar"); /// assert_eq!(t.get(b"foo").unwrap().unwrap(), DBValue::from_slice(b"bar"));
/// t.remove(b"foo").unwrap(); /// t.remove(b"foo").unwrap();
/// assert!(!t.contains(b"foo").unwrap()); /// assert!(!t.contains(b"foo").unwrap());
/// } /// }
@ -338,7 +337,7 @@ impl<'a> TrieDBMut<'a> {
// cache a node by hash // cache a node by hash
fn cache(&mut self, hash: H256) -> super::Result<StorageHandle> { fn cache(&mut self, hash: H256) -> super::Result<StorageHandle> {
let node_rlp = try!(self.db.get(&hash).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(hash)))); let node_rlp = try!(self.db.get(&hash).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(hash))));
let node = Node::from_rlp(node_rlp, &*self.db, &mut self.storage); let node = Node::from_rlp(&node_rlp, &*self.db, &mut self.storage);
Ok(self.storage.alloc(Stored::Cached(node, hash))) Ok(self.storage.alloc(Stored::Cached(node, hash)))
} }
@ -367,7 +366,7 @@ impl<'a> TrieDBMut<'a> {
} }
// walk the trie, attempting to find the key's node. // walk the trie, attempting to find the key's node.
fn lookup<'x, 'key>(&'x self, partial: NibbleSlice<'key>, handle: &NodeHandle) -> super::Result<Option<&'x [u8]>> fn lookup<'x, 'key>(&'x self, partial: NibbleSlice<'key>, handle: &NodeHandle) -> super::Result<Option<DBValue>>
where 'x: 'key where 'x: 'key
{ {
match *handle { match *handle {
@ -376,7 +375,7 @@ impl<'a> TrieDBMut<'a> {
Node::Empty => Ok(None), Node::Empty => Ok(None),
Node::Leaf(ref key, ref value) => { Node::Leaf(ref key, ref value) => {
if NibbleSlice::from_encoded(key).0 == partial { if NibbleSlice::from_encoded(key).0 == partial {
Ok(Some(value)) Ok(Some(DBValue::from_slice(value)))
} else { } else {
Ok(None) Ok(None)
} }
@ -391,7 +390,7 @@ impl<'a> TrieDBMut<'a> {
} }
Node::Branch(ref children, ref value) => { Node::Branch(ref children, ref value) => {
if partial.is_empty() { if partial.is_empty() {
Ok(value.as_ref().map(|v| &v[..])) Ok(value.as_ref().map(|v| DBValue::from_slice(v)))
} else { } else {
let idx = partial.at(0); let idx = partial.at(0);
match children[idx as usize].as_ref() { match children[idx as usize].as_ref() {
@ -405,28 +404,33 @@ impl<'a> TrieDBMut<'a> {
} }
/// Return optional data for a key given as a `NibbleSlice`. Returns `None` if no data exists. /// Return optional data for a key given as a `NibbleSlice`. Returns `None` if no data exists.
fn do_db_lookup<'x, 'key>(&'x self, hash: &H256, key: NibbleSlice<'key>) -> super::Result<Option<&'x [u8]>> fn do_db_lookup<'x, 'key>(&'x self, hash: &H256, key: NibbleSlice<'key>) -> super::Result<Option<DBValue>>
where 'x: 'key where 'x: 'key
{ {
self.db.get(hash).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(*hash))) self.db.get(hash).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(*hash)))
.and_then(|node_rlp| self.get_from_db_node(node_rlp, key)) .and_then(|node_rlp| self.get_from_db_node(&node_rlp, key))
} }
/// Recursible function to retrieve the value given a `node` and a partial `key`. `None` if no /// Recursible function to retrieve the value given a `node` and a partial `key`. `None` if no
/// value exists for the key. /// value exists for the key.
/// ///
/// Note: Not a public API; use Trie trait functions. /// Note: Not a public API; use Trie trait functions.
fn get_from_db_node<'x, 'key>(&'x self, node: &'x [u8], key: NibbleSlice<'key>) -> super::Result<Option<&'x [u8]>> fn get_from_db_node<'x, 'key>(&'x self, node: &'x [u8], key: NibbleSlice<'key>) -> super::Result<Option<DBValue>>
where 'x: 'key where 'x: 'key
{ {
match RlpNode::decoded(node) { match RlpNode::decoded(node) {
RlpNode::Leaf(ref slice, value) if &key == slice => Ok(Some(value)), RlpNode::Leaf(ref slice, ref value) if NibbleSlice::from_encoded(slice).0 == key => Ok(Some(value.clone())),
RlpNode::Extension(ref slice, item) if key.starts_with(slice) => { RlpNode::Extension(ref slice, ref item) => {
self.get_from_db_node(try!(self.get_raw_or_lookup(item)), key.mid(slice.len())) let slice = &NibbleSlice::from_encoded(slice).0;
if key.starts_with(slice) {
self.get_from_db_node(&try!(self.get_raw_or_lookup(&*item)), key.mid(slice.len()))
} else {
Ok(None)
}
}, },
RlpNode::Branch(ref nodes, value) => match key.is_empty() { RlpNode::Branch(ref nodes, ref value) => match key.is_empty() {
true => Ok(value), true => Ok(value.clone()),
false => self.get_from_db_node(try!(self.get_raw_or_lookup(nodes[key.at(0) as usize])), key.mid(1)) false => self.get_from_db_node(&try!(self.get_raw_or_lookup(&*nodes[key.at(0) as usize])), key.mid(1))
}, },
_ => Ok(None), _ => Ok(None),
} }
@ -435,7 +439,7 @@ impl<'a> TrieDBMut<'a> {
/// Given some node-describing data `node`, return the actual node RLP. /// Given some node-describing data `node`, return the actual node RLP.
/// This could be a simple identity operation in the case that the node is sufficiently small, but /// This could be a simple identity operation in the case that the node is sufficiently small, but
/// may require a database lookup. /// may require a database lookup.
fn get_raw_or_lookup<'x>(&'x self, node: &'x [u8]) -> super::Result<&'x [u8]> { fn get_raw_or_lookup<'x>(&'x self, node: &'x [u8]) -> super::Result<DBValue> {
// check if its sha3 + len // check if its sha3 + len
let r = Rlp::new(node); let r = Rlp::new(node);
match r.is_data() && r.size() == 32 { match r.is_data() && r.size() == 32 {
@ -443,12 +447,12 @@ impl<'a> TrieDBMut<'a> {
let key = r.as_val::<H256>(); let key = r.as_val::<H256>();
self.db.get(&key).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(key))) self.db.get(&key).ok_or_else(|| Box::new(TrieError::IncompleteDatabase(key)))
} }
false => Ok(node) false => Ok(DBValue::from_slice(node))
} }
} }
/// insert a key, value pair into the trie, creating new nodes if necessary. /// insert a key, value pair into the trie, creating new nodes if necessary.
fn insert_at(&mut self, handle: NodeHandle, partial: NibbleSlice, value: Bytes) -> super::Result<(StorageHandle, bool)> { fn insert_at(&mut self, handle: NodeHandle, partial: NibbleSlice, value: DBValue) -> super::Result<(StorageHandle, bool)> {
let h = match handle { let h = match handle {
NodeHandle::InMemory(h) => h, NodeHandle::InMemory(h) => h,
NodeHandle::Hash(h) => try!(self.cache(h)), NodeHandle::Hash(h) => try!(self.cache(h)),
@ -463,7 +467,7 @@ impl<'a> TrieDBMut<'a> {
/// the insertion inspector. /// the insertion inspector.
#[cfg_attr(feature = "dev", allow(cyclomatic_complexity))] #[cfg_attr(feature = "dev", allow(cyclomatic_complexity))]
fn insert_inspector(&mut self, node: Node, partial: NibbleSlice, value: Bytes) -> super::Result<InsertAction> { fn insert_inspector(&mut self, node: Node, partial: NibbleSlice, value: DBValue) -> super::Result<InsertAction> {
trace!(target: "trie", "augmented (partial: {:?}, value: {:?})", partial, value.pretty()); trace!(target: "trie", "augmented (partial: {:?}, value: {:?})", partial, value.pretty());
Ok(match node { Ok(match node {
@ -898,7 +902,7 @@ impl<'a> TrieMut for TrieDBMut<'a> {
} }
} }
fn get<'x, 'key>(&'x self, key: &'key [u8]) -> super::Result<Option<&'x [u8]>> where 'x: 'key { fn get<'x, 'key>(&'x self, key: &'key [u8]) -> super::Result<Option<DBValue>> where 'x: 'key {
self.lookup(NibbleSlice::new(key), &self.root_handle) self.lookup(NibbleSlice::new(key), &self.root_handle)
} }
@ -911,7 +915,7 @@ impl<'a> TrieMut for TrieDBMut<'a> {
trace!(target: "trie", "insert: key={:?}, value={:?}", key.pretty(), value.pretty()); trace!(target: "trie", "insert: key={:?}, value={:?}", key.pretty(), value.pretty());
let root_handle = self.root_handle(); let root_handle = self.root_handle();
let (new_handle, changed) = try!(self.insert_at(root_handle, NibbleSlice::new(key), value.to_owned())); let (new_handle, changed) = try!(self.insert_at(root_handle, NibbleSlice::new(key), DBValue::from_slice(value)));
trace!(target: "trie", "insert: altered trie={}", changed); trace!(target: "trie", "insert: altered trie={}", changed);
self.root_handle = NodeHandle::InMemory(new_handle); self.root_handle = NodeHandle::InMemory(new_handle);
@ -1180,9 +1184,9 @@ mod tests {
let mut root = H256::new(); let mut root = H256::new();
let mut t = TrieDBMut::new(&mut memdb, &mut root); let mut t = TrieDBMut::new(&mut memdb, &mut root);
t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap(); t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap();
assert_eq!(t.get(&[0x1, 0x23]).unwrap().unwrap(), &[0x1u8, 0x23]); assert_eq!(t.get(&[0x1, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x1u8, 0x23]));
t.commit(); t.commit();
assert_eq!(t.get(&[0x1, 0x23]).unwrap().unwrap(), &[0x1u8, 0x23]); assert_eq!(t.get(&[0x1, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x1u8, 0x23]));
} }
#[test] #[test]
@ -1193,14 +1197,14 @@ mod tests {
t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap(); t.insert(&[0x01u8, 0x23], &[0x01u8, 0x23]).unwrap();
t.insert(&[0xf1u8, 0x23], &[0xf1u8, 0x23]).unwrap(); t.insert(&[0xf1u8, 0x23], &[0xf1u8, 0x23]).unwrap();
t.insert(&[0x81u8, 0x23], &[0x81u8, 0x23]).unwrap(); t.insert(&[0x81u8, 0x23], &[0x81u8, 0x23]).unwrap();
assert_eq!(t.get(&[0x01, 0x23]).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&[0x01, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
assert_eq!(t.get(&[0xf1, 0x23]).unwrap().unwrap(), &[0xf1u8, 0x23]); assert_eq!(t.get(&[0xf1, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0xf1u8, 0x23]));
assert_eq!(t.get(&[0x81, 0x23]).unwrap().unwrap(), &[0x81u8, 0x23]); assert_eq!(t.get(&[0x81, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x81u8, 0x23]));
assert_eq!(t.get(&[0x82, 0x23]), Ok(None)); assert_eq!(t.get(&[0x82, 0x23]), Ok(None));
t.commit(); t.commit();
assert_eq!(t.get(&[0x01, 0x23]).unwrap().unwrap(), &[0x01u8, 0x23]); assert_eq!(t.get(&[0x01, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
assert_eq!(t.get(&[0xf1, 0x23]).unwrap().unwrap(), &[0xf1u8, 0x23]); assert_eq!(t.get(&[0xf1, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0xf1u8, 0x23]));
assert_eq!(t.get(&[0x81, 0x23]).unwrap().unwrap(), &[0x81u8, 0x23]); assert_eq!(t.get(&[0x81, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x81u8, 0x23]));
assert_eq!(t.get(&[0x82, 0x23]), Ok(None)); assert_eq!(t.get(&[0x82, 0x23]), Ok(None));
} }