Struct MemoryDatabase

pub struct MemoryDatabase { /* private fields */ }

In-memory ephemeral database

This database can be used as a temporary storage for wallets that are not kept permanently on a device, or on platforms that don’t provide a filesystem, like wasm32.

Once it’s dropped its content will be lost.

If you are looking for a permanent storage solution, you can try with the default key-value database called sled. See the database module documentation for more details.

Implementations

impl MemoryDatabase

pub fn new() -> Self

Create a new empty database

Trait Implementations

impl BatchDatabase for MemoryDatabase

type Batch = MemoryDatabase

Container for the operations

fn begin_batch(&self) -> Self::Batch

Create a new batch container

fn commit_batch(&mut self, batch: Self::Batch) -> Result<(), Error>

Consume and apply a batch of operations

impl BatchOperations for MemoryDatabase

fn set_script_pubkey( &mut self, script: &Script, keychain: KeychainKind, path: u32, ) -> Result<(), Error>

Store a script_pubkey along with its keychain and child number.

fn set_utxo(&mut self, utxo: &LocalUtxo) -> Result<(), Error>

Store a LocalUtxo

fn set_raw_tx(&mut self, transaction: &Transaction) -> Result<(), Error>

Store a raw transaction

fn set_tx(&mut self, transaction: &TransactionDetails) -> Result<(), Error>

Store the metadata of a transaction

fn set_last_index( &mut self, keychain: KeychainKind, value: u32, ) -> Result<(), Error>

Store the last derivation index for a given keychain.

fn set_sync_time(&mut self, data: SyncTime) -> Result<(), Error>

Store the sync time

fn del_script_pubkey_from_path( &mut self, keychain: KeychainKind, path: u32, ) -> Result<Option<Script>, Error>

Delete a script_pubkey given the keychain and its child number.

fn del_path_from_script_pubkey( &mut self, script: &Script, ) -> Result<Option<(KeychainKind, u32)>, Error>

Delete the data related to a specific script_pubkey, meaning the keychain and the child number.

fn del_utxo(&mut self, outpoint: &OutPoint) -> Result<Option<LocalUtxo>, Error>

Delete a LocalUtxo given its OutPoint

fn del_raw_tx(&mut self, txid: &Txid) -> Result<Option<Transaction>, Error>

Delete a raw transaction given its Txid

fn del_tx( &mut self, txid: &Txid, include_raw: bool, ) -> Result<Option<TransactionDetails>, Error>

Delete the metadata of a transaction and optionally the raw transaction itself

fn del_last_index( &mut self, keychain: KeychainKind, ) -> Result<Option<u32>, Error>

Delete the last derivation index for a keychain.

fn del_sync_time(&mut self) -> Result<Option<SyncTime>, Error>

Reset the sync time to None

impl ConfigurableDatabase for MemoryDatabase

type Config = ()

Type that contains the configuration

fn from_config(_config: &Self::Config) -> Result<Self, Error>

Create a new instance given a configuration

impl Database for MemoryDatabase

fn check_descriptor_checksum<B: AsRef<[u8]>>( &mut self, keychain: KeychainKind, bytes: B, ) -> Result<(), Error>

Read and checks the descriptor checksum for a given keychain.

fn iter_script_pubkeys( &self, keychain: Option<KeychainKind>, ) -> Result<Vec<Script>, Error>

Return the list of script_pubkeys

fn iter_utxos(&self) -> Result<Vec<LocalUtxo>, Error>

Return the list of LocalUtxos

fn iter_raw_txs(&self) -> Result<Vec<Transaction>, Error>

Return the list of raw transactions

fn iter_txs(&self, include_raw: bool) -> Result<Vec<TransactionDetails>, Error>

Return the list of transactions metadata

fn get_script_pubkey_from_path( &self, keychain: KeychainKind, path: u32, ) -> Result<Option<Script>, Error>

Fetch a script_pubkey given the child number of a keychain.

fn get_path_from_script_pubkey( &self, script: &Script, ) -> Result<Option<(KeychainKind, u32)>, Error>

Fetch the keychain and child number of a given script_pubkey

fn get_utxo(&self, outpoint: &OutPoint) -> Result<Option<LocalUtxo>, Error>

Fetch a LocalUtxo given its OutPoint

fn get_raw_tx(&self, txid: &Txid) -> Result<Option<Transaction>, Error>

Fetch a raw transaction given its Txid

fn get_tx( &self, txid: &Txid, include_raw: bool, ) -> Result<Option<TransactionDetails>, Error>

Fetch the transaction metadata and optionally also the raw transaction

fn get_last_index(&self, keychain: KeychainKind) -> Result<Option<u32>, Error>

Return the last derivation index for a keychain.

fn get_sync_time(&self) -> Result<Option<SyncTime>, Error>

Return the sync time, if present

fn increment_last_index(&mut self, keychain: KeychainKind) -> Result<u32, Error>

Increment the last derivation index for a keychain and return it

impl Debug for MemoryDatabase

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MemoryDatabase

fn default() -> MemoryDatabase

Returns the “default value” for a type.

impl From<<MemoryDatabase as BatchDatabase>::Batch> for AnyBatch

fn from(inner: <MemoryDatabase as BatchDatabase>::Batch) -> Self

Converts to this type from the input type.

impl From<MemoryDatabase> for AnyDatabase

fn from(inner: MemoryDatabase) -> Self

Converts to this type from the input type.