pub struct DependencyChecker { /* private fields */ }Expand description
Sticky, dynamic dependency-resolution tracker shared across serving modes
(in-process host and OoP).
Passive: the resolution loop / consumer-wiring feeds it
(register_dep, mark_resolved);
it never runs a check itself — unlike the active
Healthcheck registry. It answers exactly
one question — are all declared dependencies resolved? — and carries the
process-wide draining flag both /readyz front-ends consult (the in-process
ReadinessHealthcheck leaf check and the OoP ReadinessState
aggregator).
Startup-gating and sticky: once a dependency is resolved it stays
resolved. A provider vanishing later does NOT revert /readyz — that is
runtime churn, handled lazily by the directory-resolving client at call time
(liveness is /healthz, not /readyz).
Implementations§
Source§impl DependencyChecker
impl DependencyChecker
Sourcepub fn register_dep(&self, dep_gear: impl Into<String>)
pub fn register_dep(&self, dep_gear: impl Into<String>)
Declare a consumed dependency that gates readiness (idempotent; keeps an already-resolved entry resolved).
Sourcepub fn mark_resolved(&self, dep_gear: &str) -> bool
pub fn mark_resolved(&self, dep_gear: &str) -> bool
Mark a previously-registered dependency as resolved. Unknown names are
ignored. Returns true only on the false → true transition (so callers
can log the resolution exactly once).
Sourcepub fn unresolved_deps(&self) -> Vec<String>
pub fn unresolved_deps(&self) -> Vec<String>
Names of consumed dependency gears not yet resolved.
Sourcepub fn all_resolved(&self) -> bool
pub fn all_resolved(&self) -> bool
Whether every declared dependency has resolved (or none were declared).
Sourcepub fn set_draining(&self, draining: bool)
pub fn set_draining(&self, draining: bool)
Begin (or clear) draining. Setting it makes /readyz report 503
regardless of dependency state so upstreams drain the instance.
Sourcepub fn is_draining(&self) -> bool
pub fn is_draining(&self) -> bool
Whether shutdown has begun.
Trait Implementations§
Source§impl Debug for DependencyChecker
impl Debug for DependencyChecker
Auto Trait Implementations§
impl !Freeze for DependencyChecker
impl !RefUnwindSafe for DependencyChecker
impl Send for DependencyChecker
impl Sync for DependencyChecker
impl Unpin for DependencyChecker
impl UnsafeUnpin for DependencyChecker
impl UnwindSafe for DependencyChecker
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