Struct InMemoryObserver 

pub struct InMemoryObserver { /* private fields */ }

Test-grade observer: every envelope is delivered to an InMemorySink. Spec 61 § 2.4 example.

Implementations

impl InMemoryObserver

pub fn new() -> Self

Construct with an empty schema registry. The registry is only consulted by ScrubbedEnvelope::pass_through to populate schema() — for in-memory tests we don’t need decoding so an empty registry is fine.

pub fn with_sink(sink: InMemorySink) -> Self

Construct with an existing sink. Used when several observers should aggregate into the same buffer.

pub fn handle(&self) -> InMemoryHandle

Stable handle to the buffer (drain / count / wait_for).

Trait Implementations

impl Clone for InMemoryObserver

fn clone(&self) -> InMemoryObserver

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InMemoryObserver

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

Formats the value using the given formatter.

impl Default for InMemoryObserver

fn default() -> Self

Returns the “default value” for a type.

impl Observer for InMemoryObserver

fn emit_envelope(&self, env: ObsEnvelope)

Hot-path emit. Never blocks. Never panics. Spec 11 § 3.

fn enabled(&self, _callsite: &ObsCallsite) -> bool

Cheap callsite filter check; called only when the cached Interest is Sometimes. Default impl returns true (allows every callsite that survived enabled_static).

fn generation(&self) -> u32

Monotonic generation counter; bumped on every filter / config change so callsite caches re-validate. Spec 11 § 3.2.

fn reload_filter(&self)

Force every callsite’s interest cache back to Unknown. Default impl is a no-op for observers that don’t filter.

fn flush(&self) -> SinkFut<'_>

Flush all sinks; await in-flight batches. Default no-op.

fn shutdown(&self) -> SinkFut<'_>

Shutdown all sinks and join workers. Idempotent.

fn shutdown_blocking(&self, timeout: Duration)

Synchronous shutdown for use in panic hooks and Drop impls where awaiting is not possible. Best-effort within timeout. Spec 11 § 3, § 6.1.

fn callsites(&self) -> Option<Arc<ObsCallsiteRegistry>>

Access this observer’s per-process callsite registry, when it has one. The bridge (Direction A) writes the registry on first sight; ObsToTracingSink reads it to reconstitute tracing::Metadata for interned envelopes. Spec 31 § 3.2.

fn schema_registry(&self) -> Option<Arc<SchemaRegistry>>

Access this observer’s schema registry, when it has one. Sinks hold their own Arc<SchemaRegistry> from construction; this hook lets the bridge fall back to the global observer’s registry without depending on StandardObserver.

fn resource_attrs(&self) -> Arc<ResourceAttrs>

Snapshot of the workspace-shared ResourceAttrs (OTel semantic-convention keys). Sinks call this at flush time so a single config-watcher reload re-projects every sink. Default returns the empty / observer-less attribute set; concrete observers (StandardObserver) override. Spec 20 § 2.1 / spec 94 § 2.7 / P1-E.