Struct FlowGraphMeta 

pub struct FlowGraphMeta {
    pub version_hash: [u8; 32],
    pub compiled_at: SystemTime,
    pub source_files: Vec<PathBuf>,
    pub feature_set: &'static [&'static str],
    pub short_circuit_response_entry: BTreeMap<NodeId, NodeId>,
    pub listener_tls: BTreeMap<SocketAddr, ListenerTlsSpec>,
    pub listener_kinds: BTreeMap<SocketAddr, ListenerKind>,
    pub listener_transports: BTreeMap<SocketAddr, Transport>,
    pub annotations: Vec<DryRunAnnotation>,
}

Fields

version_hash: [u8; 32]

compiled_at: SystemTime

source_files: Vec<PathBuf>

feature_set: &'static [&'static str]

short_circuit_response_entry: BTreeMap<NodeId, NodeId>

Map of L7-listener entry NodeId → synthesised Terminate(WriteHttpResponse) NodeId. The executor jumps here when an L7 request middleware returns Decision::Short(ShortCircuit::Response(_)): it sets the response slot and walks to the synth target so the response runs through the standard WriteHttpResponse write path. Empty for L4-only graphs and for any L7 entry whose listener is not bound to a post-Upgrade chain (which the lower pass guarantees never happens for legal L7 listeners). See spec/flow-model.md § The compiled form.

#[serde(default)] keeps older dry-run JSON snapshots deserializable: missing field decodes as an empty map, which matches the legacy “no L7 listeners” graph shape.

listener_tls: BTreeMap<SocketAddr, ListenerTlsSpec>

Per-listener cert pool. Symbolic — each entry is the aggregated (default, sni_certs) view across every rule on the bind address that carried a tls block; the engine’s link stage reads PEM files referenced here and builds a rustls::ServerConfig with an SNI resolver that falls back to default for unmatched SNI. Listeners absent from this map are cleartext. See spec/crates/engine-tls.md § Termination flow (L4 → L7 upgrade) and § SNI peek (L4, no decrypt).

#[serde(default)] for the same wire-compat reason as the map above.

listener_kinds: BTreeMap<SocketAddr, ListenerKind>

Per-listener dispatch posture, derived from each entry’s reachable-terminator set. Populated by the lower pass; the engine reads it in crate::ir::ListenerKind-aware dispatch (spec/crates/engine.md § Dispatch table). Listeners absent from this map are treated as Http by the engine’s defensive accessor — but the lower pass guarantees every entry address has an explicit kind.

listener_transports: BTreeMap<SocketAddr, Transport>

Per-listener transport, derived from each entry’s reachable fetches. A listener with any reachable L4Forward whose args.transport == "udp" is Transport::Udp; everything else is Transport::Tcp. Mixing UDP L4Forward with any other fetch kind on the same listener is a compile error — the physical socket is single-protocol and cannot serve both transports concurrently. See spec/crates/engine.md § udp_dispatch. #[serde(default)] keeps older dry-run snapshots loadable; absent listeners are treated as Tcp.

annotations: Vec<DryRunAnnotation>

Compile-time annotations the lower pass emits as observations about the produced graph — surfaced in vane compile --dry-run so operators see synthetic-route insertions and rule-shadowing warnings without grepping logs. Stable wire format keyed by kind (e.g. "acme-injected", "shadowed-by-acme").

#[serde(default)] keeps older snapshots loadable: an absent field decodes to an empty Vec, matching pre-ACME graph shape.

Trait Implementations

impl Clone for FlowGraphMeta

fn clone(&self) -> FlowGraphMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FlowGraphMeta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FlowGraphMeta

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for FlowGraphMeta

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.