outbound_child_diagnostic/
outbound_child_diagnostic.rs1use saddle_core::{
4 BoundedDiagnosticCause, DiagnosticCategory, DiagnosticCode, DiagnosticOutcomeAxes,
5 DiagnosticStage, RpcCorrelationId,
6};
7use saddle_observability::{
8 DiagnosticSubmission, DiagnosticTaskId, DiagnosticZone, EventContext, Observer, ObserverConfig,
9 RequestDiagnosticScope, RequestIdentity, RouteIdentity,
10};
11
12fn main() {
13 let observer = Observer::with_writer(ObserverConfig::default(), std::io::sink()).unwrap();
14 let (incoming, _) = observer
15 .start_external_call_with_rpc(
16 "shop",
17 "ingress",
18 "orders",
19 "query",
20 Some("gateway-opaque"),
21 RpcCorrelationId::new("0.3").unwrap(),
22 )
23 .unwrap();
24 let ingress_event = EventContext::new(
25 RequestIdentity::new("request-7").unwrap(),
26 RouteIdentity::new("/incoming").unwrap(),
27 1,
28 )
29 .unwrap();
30 let parent = RequestDiagnosticScope::output_unavailable(incoming.context(), &ingress_event)
31 .with_task(DiagnosticTaskId::from_runtime_id("42").unwrap())
32 .unwrap_or_else(|_| panic!("task"))
33 .with_zone(DiagnosticZone::from_validated_ingress("zone-a").unwrap());
34
35 let wire_trace = "gateway-opaque";
38 let wire_rpc = "0.3.1";
39 let request_id = "request-7";
40 let function = "remote.query";
41 let (root, _) = observer
42 .start_external_call_with_rpc(
43 "saddle",
44 "zone-a",
45 "profusecontract",
46 "invoke",
47 Some(wire_trace),
48 RpcCorrelationId::new(wire_rpc).unwrap(),
49 )
50 .unwrap();
51 let event = EventContext::new(
52 RequestIdentity::new(request_id).unwrap(),
53 RouteIdentity::new(function).unwrap(),
54 1,
55 )
56 .unwrap();
57 let child = parent
58 .derive_outbound_child(root.context(), &event)
59 .unwrap();
60 let failure = child.fail(
61 std::io::ErrorKind::ConnectionRefused,
62 DiagnosticCategory::UnexpectedError,
63 BoundedDiagnosticCause::new(
64 DiagnosticStage::RequestDecode,
65 DiagnosticCode::new("outbound.connect_failed").unwrap(),
66 ),
67 );
68 let id = failure.source_diagnostic().id();
69 let (retained, delivery) =
70 failure.finish_boundary_retained(None, &DiagnosticOutcomeAxes::default());
71 assert_eq!(retained.source_diagnostic().id(), id);
72 assert_eq!(*retained.error(), std::io::ErrorKind::ConnectionRefused);
73 assert_eq!(
74 delivery.source_submission(),
75 DiagnosticSubmission::OutputUnavailable
76 );
77 assert_eq!(
78 delivery.boundary_submission(),
79 DiagnosticSubmission::OutputUnavailable
80 );
81 println!("GO: Boundary-shaped child Call/Event consumed; absent output retains same failure");
82}