Trait MetadataProvider 

pub trait MetadataProvider: Send + Sync {
    // Required method
    fn get_metadata(&self, key: &str) -> ProviderResult<Option<Vec<u8>>>;

    // Provided method
    fn storage_settings(&self) -> ProviderResult<Option<StorageSettings>> { ... }
}

Available on crate feature db-api only.

Client trait for reading node metadata from the database.

Required Methods

fn get_metadata(&self, key: &str) -> ProviderResult<Option<Vec<u8>>>

Get a metadata value by key

Provided Methods

fn storage_settings(&self) -> ProviderResult<Option<StorageSettings>>

Get storage settings for this node

Implementations on Foreign Types

impl<'a, T: 'a + MetadataProvider + ?Sized> MetadataProvider for &'a T

where &'a T: Send + Sync,

fn get_metadata(&self, key: &str) -> ProviderResult<Option<Vec<u8>>>

fn storage_settings(&self) -> ProviderResult<Option<StorageSettings>>

impl<T: MetadataProvider + ?Sized> MetadataProvider for Arc<T>

where Arc<T>: Send + Sync,

fn get_metadata(&self, key: &str) -> ProviderResult<Option<Vec<u8>>>

fn storage_settings(&self) -> ProviderResult<Option<StorageSettings>>

Implementors