Trait holochain_persistence_api::cas::storage::ContentAddressableStorage

pub trait ContentAddressableStorage: Clone + Send + Sync + Debug + ReportStorage {
    fn add(&mut self, content: &dyn AddressableContent) -> PersistenceResult<()>;
    fn contains(&self, address: &Address) -> PersistenceResult<bool>;
    fn fetch(&self, address: &Address) -> PersistenceResult<Option<Content>>;
    fn get_id(&self) -> Uuid;
}

content addressable store (CAS) implements storage in memory or persistently anything implementing AddressableContent can be added and fetched by address CAS is append only

Required methods

fn add(&mut self, content: &dyn AddressableContent) -> PersistenceResult<()>

adds AddressableContent to the ContentAddressableStorage by its Address as Content

fn contains(&self, address: &Address) -> PersistenceResult<bool>

true if the Address is in the Store, false otherwise. may be more efficient than retrieve depending on the implementation.

fn fetch(&self, address: &Address) -> PersistenceResult<Option<Content>>

returns Some AddressableContent if it is in the Store, else None AddressableContent::from_content() can be used to allow the compiler to infer the type @see the fetch implementation for ExampleCas in the cas module tests

fn get_id(&self) -> Uuid

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Trait Implementations

impl PartialEq<dyn ContentAddressableStorage + 'static> for dyn ContentAddressableStorage

fn eq(&self, other: &dyn ContentAddressableStorage) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

Implementors

impl ContentAddressableStorage for ExampleContentAddressableStorage

fn add(&mut self, content: &dyn AddressableContent) -> PersistenceResult<()>

fn contains(&self, address: &Address) -> PersistenceResult<bool>

fn fetch(&self, address: &Address) -> PersistenceResult<Option<Content>>

fn get_id(&self) -> Uuid

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