Struct DockerBackend 

pub struct DockerBackend { /* private fields */ }

Docker/Podman-based Lambda execution backend.

Implementations

impl DockerBackend

pub fn auto_detect(server_port: u16) -> Option<Self>

Auto-detect Docker or Podman. Returns None if neither is available. Override with FAKECLOUD_CONTAINER_CLI env var. server_port is the port the main fakecloud server bound to; used to resolve PackageType=Image ECR URIs against fakecloud ECR.

Trait Implementations

impl LambdaBackend for DockerBackend

fn name(&self) -> &str

Short identifier surfaced via logs and introspection (e.g. "docker", "podman", "kubernetes").

fn launch<'life0, 'life1, 'life2, 'life3, 'life4, 'async_trait>( &'life0 self, func: &'life1 LambdaFunction, code_zip: Option<&'life2 [u8]>, layers: &'life3 [Vec<u8>], _deploy_id: &'life4 str, ) -> Pin<Box<dyn Future<Output = Result<WarmInstance, RuntimeError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait,

Launch a fresh runtime instance for func using the supplied code (for zip-package functions) or func.image_uri (for image package functions). layers are the attached layer ZIPs in attach order. deploy_id is the facade-computed fingerprint used to label resources so reaper logic can correlate.

fn terminate<'life0, 'life1, 'async_trait>( &'life0 self, handle: &'life1 BackendHandle, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

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

Tear down one instance. Must be idempotent — the facade may call this against an already-gone instance during cleanup races.

fn prepull_image<'life0, 'life1, 'async_trait>( &'life0 self, image: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), RuntimeError>> + Send + 'async_trait>>

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

Optional hook: pre-warm the runtime image so the first launch() for a function doesn’t pay the cold-pull cost. Called in the background after CreateFunction persists; backends that don’t benefit from pre-pulling (e.g. Kubernetes, which pulls images on the scheduling node anyway) leave this as a no-op.

fn reap_stale<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

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

Sweep instances that belong to a previous fakecloud process so their function names don’t leak across restarts. Default no-op; backends with out-of-process state should override.