Struct DependencyConditionChecker 

pub struct DependencyConditionChecker { /* private fields */ }

Checks if dependency conditions are satisfied

Provides methods to check each condition type:

• started: Container exists and is running
• healthy: Health check passes
• ready: Service is registered with proxy and has healthy backends

Implementations

impl DependencyConditionChecker

pub fn new( runtime: Arc<dyn Runtime + Send + Sync>, health_states: Arc<RwLock<HashMap<String, HealthState>>>, service_registry: Option<Arc<ServiceRegistry>>, ) -> Self

Create a new condition checker

Arguments

• runtime - Container runtime for checking container states
• health_states - Shared map of service health states
• service_registry - Optional service registry for checking proxy readiness

pub async fn check(&self, dep: &DependsSpec) -> Result<bool>

Check if a dependency condition is met

Arguments

• dep - The dependency specification to check

Returns

true if the condition is satisfied, false otherwise

Errors

Returns an error if the dependency condition cannot be evaluated.

pub async fn check_started(&self, service: &str) -> Result<bool>

Check “started” condition - container exists and is running

Returns true if at least one replica of the service is in the Running state.

Errors

Returns an error if the container state cannot be queried.

pub async fn check_healthy(&self, service: &str) -> Result<bool>

Check “healthy” condition - health check passes

Returns true only if the service health state is HealthState::Healthy. Returns false for Unknown, Checking, or Unhealthy.

Errors

Returns an error if the health state cannot be queried.

pub async fn check_ready(&self, service: &str) -> Result<bool>

Check “ready” condition - service is available for routing

Returns true if:

1. Service is registered with the proxy
2. Has at least one healthy backend

Falls back to healthy check if no service registry is configured.

Errors

Returns an error if the readiness condition cannot be checked.