Skip to main content

MetadataStore

danube_core::metadata

Trait MetadataStore 

Source 
pub trait MetadataStore:
    Send
    + Sync
    + 'static {
    // Required methods
    fn get<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 str,
        get_options: MetaOptions,
    ) -> Pin<Box<dyn Future<Output = Result<Option<Value>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn get_childrens<'life0, 'life1, 'async_trait>(
        &'life0 self,
        path: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<String>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn put<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 str,
        value: Value,
        put_options: MetaOptions,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn delete<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn watch<'life0, 'life1, 'async_trait>(
        &'life0 self,
        prefix: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<WatchStream>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn put_with_ttl<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 str,
        value: Value,
        ttl: Duration,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn get_bulk<'life0, 'life1, 'async_trait>(
        &'life0 self,
        prefix: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<KeyValueVersion>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn allocate_monotonic_id<'life0, 'life1, 'async_trait>(
        &'life0 self,
        counter_key: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

Required Methods§

Source

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, get_options: MetaOptions, ) -> Pin<Box<dyn Future<Output = Result<Option<Value>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn get_childrens<'life0, 'life1, 'async_trait>( &'life0 self, path: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn put<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, value: Value, put_options: MetaOptions, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn watch<'life0, 'life1, 'async_trait>( &'life0 self, prefix: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<WatchStream>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn put_with_ttl<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, value: Value, ttl: Duration, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Put a key with a time-to-live. The key is automatically deleted after ttl.

Source

fn get_bulk<'life0, 'life1, 'async_trait>( &'life0 self, prefix: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Vec<KeyValueVersion>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Retrieve all key-value pairs under a given prefix.

Source

fn allocate_monotonic_id<'life0, 'life1, 'async_trait>( &'life0 self, counter_key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Atomically increment and return a monotonic counter stored at counter_key.

Used for schema ID allocation — eliminates the read-modify-write race by going through Raft consensus as a single atomic command.

Implementors§