Struct MetadataService 

pub struct MetadataService;

A Service using Storage as Context taking MetadataRequest returning MetadataRequest.

use rama::{Context, Layer as _, Service, layer::MapStateLayer};
use nisshi_sans_io::MetadataRequest;
use nisshi_storage::{Error, MetadataService, StorageContainer};
use url::Url;

const HOST: &str = "localhost";
const PORT: i32 = 9092;
const NODE_ID: i32 = 111;

let storage = StorageContainer::builder()
    .cluster_id("nisshi")
    .node_id(NODE_ID)
    .advertised_listener(Url::parse(&format!("tcp://{HOST}:{PORT}"))?)
    .storage(Url::parse("memory://nisshi/")?)
    .build()
    .await?;

let service = MapStateLayer::new(|_| storage).into_layer(MetadataService);

let response = service
    .serve(
        Context::default(),
        MetadataRequest::default()
            .allow_auto_topic_creation(Some(false))
            .include_cluster_authorized_operations(Some(false))
            .include_topic_authorized_operations(Some(false))
            .topics(Some([].into())),
    )
    .await?;

let brokers = response.brokers.as_deref().unwrap_or_default();
assert_eq!(1, brokers.len());
assert_eq!(HOST, brokers[0].host);
assert_eq!(PORT, brokers[0].port);
assert_eq!(NODE_ID, brokers[0].node_id);
assert!(brokers[0].rack.is_none());

Trait Implementations

impl ApiKey for MetadataService

const KEY: i16 = MetadataRequest::KEY

impl Clone for MetadataService

fn clone(&self) -> MetadataService

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MetadataService

impl Debug for MetadataService

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

Formats the value using the given formatter.

impl Default for MetadataService

fn default() -> MetadataService

Returns the “default value” for a type.

impl Eq for MetadataService

impl Hash for MetadataService

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MetadataService

fn cmp(&self, other: &MetadataService) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MetadataService

fn eq(&self, other: &MetadataService) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MetadataService

fn partial_cmp(&self, other: &MetadataService) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<G> Service<G, MetadataRequest> for MetadataService

where G: Storage,

type Response = MetadataResponse

The type of response returned by the service.

type Error = Error

The type of error returned by the service.

async fn serve( &self, ctx: Context<G>, req: MetadataRequest, ) -> Result<Self::Response, Self::Error>

Serve a response or error for the given request, using the given context.

fn boxed(self) -> BoxService<S, Request, Self::Response, Self::Error>

Box this service to allow for dynamic dispatch.

impl StructuralPartialEq for MetadataService