Struct CacheDB
pub struct CacheDB<ExtDB> {
pub accounts: HashMap<Address, DbAccount, RandomState>,
pub contracts: HashMap<FixedBytes<32>, Bytecode, RandomState>,
pub logs: Vec<Log>,
pub block_hashes: HashMap<Uint<256, 4>, FixedBytes<32>, RandomState>,
pub db: ExtDB,
}
Expand description
A Database implementation that stores all state changes in memory.
This implementation wraps a DatabaseRef that is used to load data (AccountInfo).
Accounts and code are stored in two separate maps, the accounts
map maps addresses to DbAccount,
whereas contracts are identified by their code hash, and are stored in the contracts
map.
The DbAccount holds the code hash of the contract, which is used to look up the contract in the contracts
map.
Fields§
§accounts: HashMap<Address, DbAccount, RandomState>
Account info where None means it is not existing. Not existing state is needed for Pre TANGERINE forks.
code
is always None
, and bytecode can be found in contracts
.
contracts: HashMap<FixedBytes<32>, Bytecode, RandomState>
Tracks all contracts by their code hash.
logs: Vec<Log>
All logs that were committed via DatabaseCommit::commit.
block_hashes: HashMap<Uint<256, 4>, FixedBytes<32>, RandomState>
All cached block hashes from the DatabaseRef.
db: ExtDB
The underlying database (DatabaseRef) that is used to load data.
Note: this is read-only, data is never written to this database.
Implementations§
§impl<ExtDB> CacheDB<ExtDB>
impl<ExtDB> CacheDB<ExtDB>
pub fn new(db: ExtDB) -> CacheDB<ExtDB>
pub fn insert_contract(&mut self, account: &mut AccountInfo)
pub fn insert_contract(&mut self, account: &mut AccountInfo)
Inserts the account’s code into the cache.
Accounts objects and code are stored separately in the cache, this will take the code from the account and instead map it to the code hash.
Note: This will not insert into the underlying external database.
pub fn insert_account_info(&mut self, address: Address, info: AccountInfo)
pub fn insert_account_info(&mut self, address: Address, info: AccountInfo)
Insert account info but not override storage
§impl<ExtDB> CacheDB<ExtDB>where
ExtDB: DatabaseRef,
impl<ExtDB> CacheDB<ExtDB>where
ExtDB: DatabaseRef,
pub fn load_account(
&mut self,
address: Address,
) -> Result<&mut DbAccount, <ExtDB as DatabaseRef>::Error>
pub fn load_account( &mut self, address: Address, ) -> Result<&mut DbAccount, <ExtDB as DatabaseRef>::Error>
Returns the account for the given address.
If the account was not found in the cache, it will be loaded from the underlying database.
pub fn insert_account_storage(
&mut self,
address: Address,
slot: Uint<256, 4>,
value: Uint<256, 4>,
) -> Result<(), <ExtDB as DatabaseRef>::Error>
pub fn insert_account_storage( &mut self, address: Address, slot: Uint<256, 4>, value: Uint<256, 4>, ) -> Result<(), <ExtDB as DatabaseRef>::Error>
insert account storage without overriding account info
pub fn replace_account_storage(
&mut self,
address: Address,
storage: HashMap<Uint<256, 4>, Uint<256, 4>, RandomState>,
) -> Result<(), <ExtDB as DatabaseRef>::Error>
pub fn replace_account_storage( &mut self, address: Address, storage: HashMap<Uint<256, 4>, Uint<256, 4>, RandomState>, ) -> Result<(), <ExtDB as DatabaseRef>::Error>
replace account storage without overriding account info
Trait Implementations§
§impl<ExtDB> Database for CacheDB<ExtDB>where
ExtDB: DatabaseRef,
impl<ExtDB> Database for CacheDB<ExtDB>where
ExtDB: DatabaseRef,
§fn storage(
&mut self,
address: Address,
index: Uint<256, 4>,
) -> Result<Uint<256, 4>, <CacheDB<ExtDB> as Database>::Error>
fn storage( &mut self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <CacheDB<ExtDB> as Database>::Error>
Get the value in an account’s storage slot.
It is assumed that account is already loaded.
§type Error = <ExtDB as DatabaseRef>::Error
type Error = <ExtDB as DatabaseRef>::Error
§fn basic(
&mut self,
address: Address,
) -> Result<Option<AccountInfo>, <CacheDB<ExtDB> as Database>::Error>
fn basic( &mut self, address: Address, ) -> Result<Option<AccountInfo>, <CacheDB<ExtDB> as Database>::Error>
§fn code_by_hash(
&mut self,
code_hash: FixedBytes<32>,
) -> Result<Bytecode, <CacheDB<ExtDB> as Database>::Error>
fn code_by_hash( &mut self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <CacheDB<ExtDB> as Database>::Error>
§fn block_hash(
&mut self,
number: u64,
) -> Result<FixedBytes<32>, <CacheDB<ExtDB> as Database>::Error>
fn block_hash( &mut self, number: u64, ) -> Result<FixedBytes<32>, <CacheDB<ExtDB> as Database>::Error>
§impl<ExtDB> DatabaseCommit for CacheDB<ExtDB>
impl<ExtDB> DatabaseCommit for CacheDB<ExtDB>
§impl<ExtDB> DatabaseRef for CacheDB<ExtDB>where
ExtDB: DatabaseRef,
impl<ExtDB> DatabaseRef for CacheDB<ExtDB>where
ExtDB: DatabaseRef,
§type Error = <ExtDB as DatabaseRef>::Error
type Error = <ExtDB as DatabaseRef>::Error
§fn basic_ref(
&self,
address: Address,
) -> Result<Option<AccountInfo>, <CacheDB<ExtDB> as DatabaseRef>::Error>
fn basic_ref( &self, address: Address, ) -> Result<Option<AccountInfo>, <CacheDB<ExtDB> as DatabaseRef>::Error>
§fn code_by_hash_ref(
&self,
code_hash: FixedBytes<32>,
) -> Result<Bytecode, <CacheDB<ExtDB> as DatabaseRef>::Error>
fn code_by_hash_ref( &self, code_hash: FixedBytes<32>, ) -> Result<Bytecode, <CacheDB<ExtDB> as DatabaseRef>::Error>
§fn storage_ref(
&self,
address: Address,
index: Uint<256, 4>,
) -> Result<Uint<256, 4>, <CacheDB<ExtDB> as DatabaseRef>::Error>
fn storage_ref( &self, address: Address, index: Uint<256, 4>, ) -> Result<Uint<256, 4>, <CacheDB<ExtDB> as DatabaseRef>::Error>
§fn block_hash_ref(
&self,
number: u64,
) -> Result<FixedBytes<32>, <CacheDB<ExtDB> as DatabaseRef>::Error>
fn block_hash_ref( &self, number: u64, ) -> Result<FixedBytes<32>, <CacheDB<ExtDB> as DatabaseRef>::Error>
§impl<'de, ExtDB> Deserialize<'de> for CacheDB<ExtDB>where
ExtDB: Deserialize<'de>,
impl<'de, ExtDB> Deserialize<'de> for CacheDB<ExtDB>where
ExtDB: Deserialize<'de>,
§fn deserialize<__D>(
__deserializer: __D,
) -> Result<CacheDB<ExtDB>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<CacheDB<ExtDB>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
§impl<ExtDB> Serialize for CacheDB<ExtDB>where
ExtDB: Serialize,
impl<ExtDB> Serialize for CacheDB<ExtDB>where
ExtDB: Serialize,
§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
Auto Trait Implementations§
impl<ExtDB> Freeze for CacheDB<ExtDB>where
ExtDB: Freeze,
impl<ExtDB> RefUnwindSafe for CacheDB<ExtDB>where
ExtDB: RefUnwindSafe,
impl<ExtDB> Send for CacheDB<ExtDB>where
ExtDB: Send,
impl<ExtDB> Sync for CacheDB<ExtDB>where
ExtDB: Sync,
impl<ExtDB> Unpin for CacheDB<ExtDB>where
ExtDB: Unpin,
impl<ExtDB> UnwindSafe for CacheDB<ExtDB>where
ExtDB: UnwindSafe,
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