Trait HostStore 

pub trait HostStore: Send {
    // Required methods
    fn open(
        &mut self,
        label: String,
    ) -> impl Future<Output = Result<Result<Resource<Store>, Error>>> + Send;
    fn get(
        &mut self,
        self_: Resource<Store>,
        key: String,
    ) -> impl Future<Output = Result<Result<Option<Vec<u8>>, Error>>> + Send;
    fn set(
        &mut self,
        self_: Resource<Store>,
        key: String,
        value: Vec<u8>,
    ) -> impl Future<Output = Result<Result<(), Error>>> + Send;
    fn delete(
        &mut self,
        self_: Resource<Store>,
        key: String,
    ) -> impl Future<Output = Result<Result<(), Error>>> + Send;
    fn exists(
        &mut self,
        self_: Resource<Store>,
        key: String,
    ) -> impl Future<Output = Result<Result<bool, Error>>> + Send;
    fn get_keys(
        &mut self,
        self_: Resource<Store>,
    ) -> impl Future<Output = Result<Result<Vec<String>, Error>>> + Send;
    fn drop(
        &mut self,
        rep: Resource<Store>,
    ) -> impl Future<Output = Result<()>> + Send;
}

Required Methods

fn open( &mut self, label: String, ) -> impl Future<Output = Result<Result<Resource<Store>, Error>>> + Send

Open the store with the specified label.

label must refer to a store allowed in the spin.toml manifest.

error::no-such-store will be raised if the label is not recognized.

fn get( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<Option<Vec<u8>>, Error>>> + Send

Get the value associated with the specified key

Returns ok(none) if the key does not exist.

fn set( &mut self, self_: Resource<Store>, key: String, value: Vec<u8>, ) -> impl Future<Output = Result<Result<(), Error>>> + Send

Set the value associated with the specified key overwriting any existing value.

fn delete( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<(), Error>>> + Send

Delete the tuple with the specified key

No error is raised if a tuple did not previously exist for key.

fn exists( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<bool, Error>>> + Send

Return whether a tuple exists for the specified key

fn get_keys( &mut self, self_: Resource<Store>, ) -> impl Future<Output = Result<Result<Vec<String>, Error>>> + Send

Return a list of all the keys

fn drop( &mut self, rep: Resource<Store>, ) -> impl Future<Output = Result<()>> + Send

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<_T: HostStore + ?Sized + Send> HostStore for &mut _T

fn open( &mut self, label: String, ) -> impl Future<Output = Result<Result<Resource<Store>, Error>>> + Send

Open the store with the specified label.

label must refer to a store allowed in the spin.toml manifest.

error::no-such-store will be raised if the label is not recognized.

fn get( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<Option<Vec<u8>>, Error>>> + Send

Get the value associated with the specified key

Returns ok(none) if the key does not exist.

fn set( &mut self, self_: Resource<Store>, key: String, value: Vec<u8>, ) -> impl Future<Output = Result<Result<(), Error>>> + Send

Set the value associated with the specified key overwriting any existing value.

fn delete( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<(), Error>>> + Send

Delete the tuple with the specified key

No error is raised if a tuple did not previously exist for key.

fn exists( &mut self, self_: Resource<Store>, key: String, ) -> impl Future<Output = Result<Result<bool, Error>>> + Send

Return whether a tuple exists for the specified key

fn get_keys( &mut self, self_: Resource<Store>, ) -> impl Future<Output = Result<Result<Vec<String>, Error>>> + Send

Return a list of all the keys

async fn drop(&mut self, rep: Resource<Store>) -> Result<()>

Implementors