Struct Moka 

pub struct Moka { /* private fields */ }

Available on crate feature services-moka only.

moka backend support.

Capabilities

Depending on its configuration and the backing system, this service can expose:

• create_dir
• stat
• read
• write
• delete
• list
• copy
• rename
• presign

Inspect the effective capability set with opendal_core::Operator::info and opendal_core::OperatorInfo::capability after building an operator.

Configuration

Use crate::MokaConfig for serializable configuration and this builder’s methods for direct construction. The field and method documentation defines accepted values, defaults, and environment interaction.

Example

Via Builder

use opendal_core::Operator;
use opendal_core::Result;
use opendal_service_moka::Moka;

#[tokio::main]
async fn main() -> Result<()> {
    let mut builder = Moka::default()
        .name("opendal");

    let op: Operator = Operator::new(builder)?;
    Ok(())
}

Implementations

impl MokaBuilder

pub fn new( builder: CacheBuilder<String, MokaValue, Cache<String, MokaValue>>, ) -> MokaBuilder

Create a MokaBuilder with the given [moka::future::CacheBuilder].

Refer to moka::future::CacheBuilder

Example

let moka = Moka::new(
    MokaCacheBuilder::<String, MokaValue>::default()
        .name("demo")
        .max_capacity(1000)
        .time_to_live(Duration::from_secs(300))
        .weigher(|k, v| (k.len() + v.content.len()) as u32)
        .eviction_listener(|k: Arc<String>, v: MokaValue, cause: RemovalCause| {
            debug!(
                "moka cache eviction listener, key = {}, value = {:?}, cause = {:?}",
                k.as_str(), v.content.to_vec(), cause
            );
        })
);

pub fn name(self, v: &str) -> MokaBuilder

Sets the name of the cache.

Refer to moka::future::CacheBuilder::name

pub fn max_capacity(self, v: u64) -> MokaBuilder

Sets the max capacity of the cache.

Refer to moka::future::CacheBuilder::max_capacity

pub fn time_to_live(self, v: Duration) -> MokaBuilder

Sets the time to live of the cache.

Refer to moka::future::CacheBuilder::time_to_live

pub fn time_to_idle(self, v: Duration) -> MokaBuilder

Sets the time to idle of the cache.

Refer to moka::future::CacheBuilder::time_to_idle

pub fn root(self, path: &str) -> MokaBuilder

Set the root path of this backend

Trait Implementations

impl Builder for MokaBuilder

type Config = MokaConfig

Associated configuration.

fn build(self) -> Result<impl Service, Error>

Consume the builder to build a service.

impl Debug for MokaBuilder

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

Formats the value using the given formatter.

impl Default for MokaBuilder

fn default() -> MokaBuilder

Returns the “default value” for a type.