Trait mz_orchestrator::NamespacedOrchestrator

pub trait NamespacedOrchestrator:
    Debug
    + Send
    + Sync {
    // Required methods
    fn ensure_service(
        &self,
        id: &str,
        config: ServiceConfig,
    ) -> Result<Box<dyn Service>, Error>;
    fn drop_service(&self, id: &str) -> Result<(), Error>;
    fn list_services<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<String>, Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn watch_services(&self) -> BoxStream<'static, Result<ServiceEvent, Error>>;
    fn fetch_service_metrics<'life0, 'life1, 'async_trait>(
        &'life0 self,
        id: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<ServiceProcessMetrics>, Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn update_scheduling_config(&self, config: ServiceSchedulingConfig);
}

An orchestrator restricted to a single namespace.

Required Methods

fn ensure_service( &self, id: &str, config: ServiceConfig, ) -> Result<Box<dyn Service>, Error>

Ensures that a service with the given configuration is running.

If a service with the same ID already exists, its configuration is updated to match config. This may or may not involve restarting the service, depending on whether the existing service matches config.

fn drop_service(&self, id: &str) -> Result<(), Error>

Drops the identified service, if it exists.

fn list_services<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>, Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Lists the identifiers of all known services.

fn watch_services(&self) -> BoxStream<'static, Result<ServiceEvent, Error>>

Watch for status changes of all known services.

fn fetch_service_metrics<'life0, 'life1, 'async_trait>( &'life0 self, id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Vec<ServiceProcessMetrics>, Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Gets resource usage metrics for all processes associated with a service.

Returns Err if the entire process failed. Returns Ok(v) otherwise, with one element in v for each process of the service, even in not all metrics could be collected for all processes. In such a case, the corresponding fields of ServiceProcessMetrics will be None.

fn update_scheduling_config(&self, config: ServiceSchedulingConfig)

Implementors