Struct Cache

pub struct Cache { /* private fields */ }

A cache for a given namespace.

Implementations

impl Cache

pub async fn get_property<T: FromStr>(&self, key: &str) -> Option<T>

Get a property from the cache.

Arguments

• key - The key to get the property for.

Returns

The property for the given key as a string.

pub async fn add_listener(&self, listener: EventListener)

Adds an event listener to the cache.

Listeners are closures that will be called when the cache is successfully refreshed. The listener will receive a Result<Value, Error>, which will be Ok(new_config) containing the newly fetched configuration.

The listener is a callback function that conforms to the EventListener type alias: Arc<dyn Fn(Result<Value, Error>) + Send + Sync>.

• Value is serde_json::Value representing the full configuration for the namespace.
• Error is crate::cache::Error indicating a failure during the refresh process.

Listeners are called when the cache is successfully refreshed with new configuration, or when an error occurs during a refresh attempt.

Arguments

• listener - The event listener to register. It must be an Arc-wrapped, thread-safe closure (Send + Sync).

Example

use std::sync::Arc;
use serde_json::Value;
use apollo_rust_client::cache::{Cache, Error, EventListener};
// Assuming `cache` is an existing Arc<Cache> instance

let listener: EventListener = Arc::new(|result: Result<Value, Error>| {
    match result {
        Ok(config) => println!("Cache refreshed, new config: {:?}", config),
        Err(e) => println!("Cache refresh failed: {:?}", e),
    }
});
cache.add_listener(listener).await;

impl Cache

pub async fn get_string(&self, key: &str) -> Option<String>

Get a property from the cache as a string.

Arguments

• key - The key to get the property for.

Returns

The property for the given key as a string.

pub async fn get_int(&self, key: &str) -> Option<i64>

Get a property from the cache as an integer.

Arguments

• key - The key to get the property for.

Returns

The property for the given key as an integer.

pub async fn get_float(&self, key: &str) -> Option<f64>

Get a property from the cache as a float.

Arguments

• key - The key to get the property for.

Returns

The property for the given key as a float.

pub async fn get_bool(&self, key: &str) -> Option<bool>

Get a property from the cache as a boolean.

Arguments

• key - The key to get the property for.

Returns

The property for the given key as a boolean.

Trait Implementations

impl Clone for Cache

fn clone(&self) -> Cache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl From<Cache> for JsValue

fn from(value: Cache) -> Self

Converts to this type from the input type.

impl FromWasmAbi for Cache

type Abi = u32

The Wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl IntoWasmAbi for Cache

type Abi = u32

The Wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl LongRefFromWasmAbi for Cache

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRef<Cache>

Same as RefFromWasmAbi::Anchor

unsafe fn long_ref_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl OptionFromWasmAbi for Cache

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for Cache

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl RefFromWasmAbi for Cache

type Abi = u32

The Wasm ABI type references to Self are recovered from.

type Anchor = RcRef<Cache>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi.

impl RefMutFromWasmAbi for Cache

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRefMut<Cache>

Same as RefFromWasmAbi::Anchor

unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl TryFromJsValue for Cache

type Error = JsValue

The type returned in the event of a conversion error.

fn try_from_js_value(value: JsValue) -> Result<Self, Self::Error>

Performs the conversion.

impl VectorFromWasmAbi for Cache

type Abi = <Box<[JsValue]> as FromWasmAbi>::Abi

unsafe fn vector_from_abi(js: Self::Abi) -> Box<[Cache]>

impl VectorIntoJsValue for Cache

fn vector_into_jsvalue(vector: Box<[Cache]>) -> JsValue

impl VectorIntoWasmAbi for Cache

type Abi = <Box<[JsValue]> as IntoWasmAbi>::Abi

fn vector_into_abi(vector: Box<[Cache]>) -> Self::Abi

impl WasmDescribe for Cache

fn describe()

impl WasmDescribeVector for Cache

fn describe_vector()

impl SupportsConstructor for Cache

impl SupportsInstanceProperty for Cache

impl SupportsStaticProperty for Cache