From ea40c46b8b0dc548b5240df69dcf986254360038 Mon Sep 17 00:00:00 2001
From: cai <cai@nbcai.cc>
Date: Wed, 12 Aug 2026 13:11:40 +0800
Subject: [PATCH] fix(helper): project fixture probe events to runtime logs

---
 src/main.rs |  365 +++++++++++++++++++++++++++++++---------------------
 1 files changed, 217 insertions(+), 148 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index d40ca9e..0b4da45 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -111,9 +111,12 @@
     reject_reason: Option<&'static str>,
 }
 
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 struct PendingControlledFixtureProbe {
     sender: ParticipantIdentity,
+    call_id_hash: String,
+    call_trace_id_hash: String,
+    generation: u64,
     sequence: String,
     expires_at: Instant,
 }
@@ -143,8 +146,9 @@
 
 fn record_controlled_fixture_probe_event(
     stage: &'static str,
-    call_id: &str,
-    trace_id: &str,
+    call_id_hash: &str,
+    trace_id_hash: &str,
+    generation: u64,
     sequence: &str,
     observed: bool,
     ack_result: Option<&'static str>,
@@ -154,56 +158,57 @@
     debug_assert!(
         reject_reason.is_none_or(|value| CONTROLLED_FIXTURE_REJECT_REASONS.contains(&value))
     );
-    if let Some(ack_result) = ack_result {
-        info!(
-            event = "controlled_fixture_attribute_probe",
+    println!(
+        "{}",
+        controlled_fixture_probe_event(
             stage,
+            call_id_hash,
+            trace_id_hash,
+            generation,
+            sequence,
             observed,
             ack_result,
-            reject_reason = reject_reason.unwrap_or("unknown"),
-            call_id_hash = %sha256_hex(call_id),
-            trace_id_hash = %sha256_hex(trace_id),
-            generation = CONTROLLED_FIXTURE_GENERATION,
-            sequence_hash = %sha256_hex(sequence),
-            "runtime helper controlled fixture probe state"
-        );
-    } else if let Some(reject_reason) = reject_reason {
-        info!(
-            event = "controlled_fixture_attribute_probe",
-            stage,
-            observed,
             reject_reason,
-            call_id_hash = %sha256_hex(call_id),
-            trace_id_hash = %sha256_hex(trace_id),
-            generation = CONTROLLED_FIXTURE_GENERATION,
-            sequence_hash = %sha256_hex(sequence),
-            "runtime helper controlled fixture probe state"
-        );
-    } else {
-        info!(
-            event = "controlled_fixture_attribute_probe",
-            stage,
-            observed,
-            call_id_hash = %sha256_hex(call_id),
-            trace_id_hash = %sha256_hex(trace_id),
-            generation = CONTROLLED_FIXTURE_GENERATION,
-            sequence_hash = %sha256_hex(sequence),
-            "runtime helper controlled fixture probe state"
-        );
-    }
+        )
+    );
+}
+
+fn controlled_fixture_probe_event(
+    stage: &'static str,
+    call_id_hash: &str,
+    trace_id_hash: &str,
+    generation: u64,
+    sequence: &str,
+    observed: bool,
+    ack_result: Option<&'static str>,
+    reject_reason: Option<&'static str>,
+) -> serde_json::Value {
+    json!({
+        "event": "controlled_fixture_attribute_probe",
+        "stage": stage,
+        "observed": observed,
+        "ack_result": ack_result,
+        "reject_reason": reject_reason,
+        "call_id_hash": call_id_hash,
+        "trace_id_hash": trace_id_hash,
+        "generation": generation,
+        "sequence_hash": sha256_hex(sequence),
+    })
 }
 
 fn record_controlled_fixture_attribute_decision(
     decision: Result<(), &'static str>,
-    call_id: &str,
-    trace_id: &str,
+    call_id_hash: &str,
+    trace_id_hash: &str,
+    generation: u64,
     sequence: &str,
 ) -> (&'static str, Option<&'static str>, bool) {
     let classification = controlled_fixture_ack_classification(decision);
     record_controlled_fixture_probe_event(
         "attributes_classified",
-        call_id,
-        trace_id,
+        call_id_hash,
+        trace_id_hash,
+        generation,
         sequence,
         classification.2,
         Some(classification.0),
@@ -217,8 +222,9 @@
     observed: bool,
     ack_result: &'static str,
     reject_reason: Option<&'static str>,
-    call_id: &str,
-    trace_id: &str,
+    call_id_hash: &str,
+    trace_id_hash: &str,
+    generation: u64,
     sequence: &str,
     acknowledged_probe_sequences: &mut HashSet<String>,
 ) -> bool
@@ -228,8 +234,9 @@
     if publish.await.is_ok() {
         record_controlled_fixture_probe_event(
             "ack_publish_completed",
-            call_id,
-            trace_id,
+            call_id_hash,
+            trace_id_hash,
+            generation,
             sequence,
             observed,
             Some(ack_result),
@@ -240,14 +247,33 @@
     } else {
         record_controlled_fixture_probe_event(
             "ack_publish_completed",
-            call_id,
-            trace_id,
+            call_id_hash,
+            trace_id_hash,
+            generation,
             sequence,
             false,
             Some("publish_failed"),
             Some("ack_publish_failed"),
         );
         false
+    }
+}
+
+fn controlled_fixture_ack_from_probe(
+    probe: &PendingControlledFixtureProbe,
+    observed: bool,
+    reject_reason: Option<&'static str>,
+) -> ControlledFixtureAttributeAck {
+    ControlledFixtureAttributeAck {
+        message_type: CONTROLLED_FIXTURE_ACK_TOPIC,
+        protocol_version: CONTROLLED_FIXTURE_PROTOCOL_VERSION,
+        call_id_hash: probe.call_id_hash.clone(),
+        call_trace_id_hash: probe.call_trace_id_hash.clone(),
+        generation: probe.generation,
+        client_fixture_sequence: probe.sequence.clone(),
+        result: if observed { "observed" } else { "rejected" },
+        input_source_category: observed.then_some("controlled_fixture"),
+        reject_reason,
     }
 }
 
@@ -273,6 +299,9 @@
     }
     Some(PendingControlledFixtureProbe {
         sender: sender.clone(),
+        call_id_hash: probe.call_id_hash,
+        call_trace_id_hash: probe.call_trace_id_hash,
+        generation: probe.generation,
         sequence: probe.client_fixture_sequence,
         expires_at: Instant::now() + CONTROLLED_FIXTURE_PROBE_TTL,
     })
@@ -1105,20 +1134,18 @@
                     track_source = %track_source,
                     "runtime helper user_track_subscribed"
                 );
-                let pending_sequence = pending_probe.as_ref().map(|probe| probe.sequence.clone());
+                let pending_binding = pending_probe.clone();
                 let participant_for_probe = participant.clone();
                 let probe_result = process_controlled_fixture_probe(
                     &mut pending_probe,
                     &mut acknowledged_probe_sequences,
                     Some(&participant_for_probe),
                     &sink,
-                    &call_id,
-                    &trace_id,
                     user_participant_identity.as_deref(),
                 )
                 .await;
                 let observer_started = start_observer_after_controlled_fixture_probe(
-                    pending_sequence.is_some(),
+                    pending_binding.is_some(),
                     probe_result,
                     || {
                         spawn_user_audio_frame_observer(
@@ -1138,7 +1165,7 @@
                         );
                     },
                 );
-                if let Some(sequence) = pending_sequence.as_deref() {
+                if let Some(probe) = pending_binding.as_ref() {
                     let (ack_result, reject_reason, observed) = match probe_result {
                         Some(true) => (Some("observed"), None, true),
                         Some(false) => (Some("rejected"), Some("unknown"), false),
@@ -1150,9 +1177,10 @@
                         } else {
                             "audio_observer_blocked"
                         },
-                        &call_id,
-                        &trace_id,
-                        sequence,
+                        &probe.call_id_hash,
+                        &probe.call_trace_id_hash,
+                        probe.generation,
+                        &probe.sequence,
                         observed,
                         ack_result,
                         reject_reason,
@@ -1180,8 +1208,9 @@
                     if acknowledged_probe_sequences.contains(&probe.client_fixture_sequence) {
                         record_controlled_fixture_probe_event(
                             "data_received",
-                            &call_id,
-                            &trace_id,
+                            &probe.call_id_hash,
+                            &probe.call_trace_id_hash,
+                            probe.generation,
                             &probe.client_fixture_sequence,
                             false,
                             Some("rejected"),
@@ -1200,8 +1229,9 @@
                 if let Some(probe) = pending_probe.as_ref() {
                     record_controlled_fixture_probe_event(
                         "data_received",
-                        &call_id,
-                        &trace_id,
+                        &probe.call_id_hash,
+                        &probe.call_trace_id_hash,
+                        probe.generation,
                         &probe.sequence,
                         false,
                         None,
@@ -1213,8 +1243,6 @@
                     &mut acknowledged_probe_sequences,
                     current_user_participant.as_ref(),
                     &sink,
-                    &call_id,
-                    &trace_id,
                     user_participant_identity.as_deref(),
                 )
                 .await;
@@ -1265,8 +1293,6 @@
     acknowledged_probe_sequences: &mut HashSet<String>,
     participant: Option<&RemoteParticipant>,
     sink: &BotAudioOutputSink,
-    call_id: &str,
-    trace_id: &str,
     expected_participant: Option<&str>,
 ) -> Option<bool> {
     let Some(probe) = pending_probe.take() else {
@@ -1275,8 +1301,9 @@
     if acknowledged_probe_sequences.contains(&probe.sequence) {
         record_controlled_fixture_probe_event(
             "attributes_classified",
-            call_id,
-            trace_id,
+            &probe.call_id_hash,
+            &probe.call_trace_id_hash,
+            probe.generation,
             &probe.sequence,
             false,
             Some("rejected"),
@@ -1287,8 +1314,9 @@
     if Instant::now() > probe.expires_at {
         record_controlled_fixture_probe_event(
             "attributes_classified",
-            call_id,
-            trace_id,
+            &probe.call_id_hash,
+            &probe.call_trace_id_hash,
+            probe.generation,
             &probe.sequence,
             false,
             Some("timeout"),
@@ -1299,8 +1327,9 @@
     let Some(participant) = participant else {
         record_controlled_fixture_probe_event(
             "attributes_classified",
-            call_id,
-            trace_id,
+            &probe.call_id_hash,
+            &probe.call_trace_id_hash,
+            probe.generation,
             &probe.sequence,
             false,
             None,
@@ -1312,8 +1341,9 @@
     if participant.identity() != probe.sender {
         record_controlled_fixture_probe_event(
             "attributes_classified",
-            call_id,
-            trace_id,
+            &probe.call_id_hash,
+            &probe.call_trace_id_hash,
+            probe.generation,
             &probe.sequence,
             false,
             Some("rejected"),
@@ -1329,22 +1359,14 @@
         || participant.attributes(),
     )
     .await;
-    let protocol_reject_reason = decision.err();
-    let (ack_result, reject_reason, observed) =
-        record_controlled_fixture_attribute_decision(decision, call_id, trace_id, &probe.sequence);
-    let result = if observed { "observed" } else { "rejected" };
-    let input_source_category = observed.then_some("controlled_fixture");
-    let ack = ControlledFixtureAttributeAck {
-        message_type: CONTROLLED_FIXTURE_ACK_TOPIC,
-        protocol_version: CONTROLLED_FIXTURE_PROTOCOL_VERSION,
-        call_id_hash: sha256_hex(call_id),
-        call_trace_id_hash: sha256_hex(trace_id),
-        generation: CONTROLLED_FIXTURE_GENERATION,
-        client_fixture_sequence: probe.sequence.clone(),
-        result,
-        input_source_category,
-        reject_reason: protocol_reject_reason,
-    };
+    let (ack_result, reject_reason, observed) = record_controlled_fixture_attribute_decision(
+        decision,
+        &probe.call_id_hash,
+        &probe.call_trace_id_hash,
+        probe.generation,
+        &probe.sequence,
+    );
+    let ack = controlled_fixture_ack_from_probe(&probe, observed, reject_reason);
     let payload = match serde_json::to_vec(&ack) {
         Ok(payload) => payload,
         Err(_) => return Some(false),
@@ -1352,8 +1374,9 @@
     let local_participant = sink.room.local_participant();
     record_controlled_fixture_probe_event(
         "ack_publish_started",
-        call_id,
-        trace_id,
+        &probe.call_id_hash,
+        &probe.call_trace_id_hash,
+        probe.generation,
         &probe.sequence,
         observed,
         Some(ack_result),
@@ -1371,8 +1394,9 @@
             observed,
             ack_result,
             reject_reason,
-            call_id,
-            trace_id,
+            &probe.call_id_hash,
+            &probe.call_trace_id_hash,
+            probe.generation,
             &probe.sequence,
             acknowledged_probe_sequences,
         )
@@ -4629,7 +4653,7 @@
         io::{Read, Write},
         net::TcpListener,
         sync::{
-            Arc, Mutex,
+            Arc,
             atomic::{AtomicUsize, Ordering},
             mpsc,
         },
@@ -4647,30 +4671,6 @@
             participant: String,
             attributes: HashMap<String, String>,
         },
-    }
-
-    #[derive(Clone, Default)]
-    struct CapturedLogs(Arc<Mutex<Vec<u8>>>);
-
-    struct CapturedLogWriter(Arc<Mutex<Vec<u8>>>);
-
-    impl Write for CapturedLogWriter {
-        fn write(&mut self, bytes: &[u8]) -> std::io::Result<usize> {
-            self.0.lock().unwrap().extend_from_slice(bytes);
-            Ok(bytes.len())
-        }
-
-        fn flush(&mut self) -> std::io::Result<()> {
-            Ok(())
-        }
-    }
-
-    impl<'a> tracing_subscriber::fmt::MakeWriter<'a> for CapturedLogs {
-        type Writer = CapturedLogWriter;
-
-        fn make_writer(&'a self) -> Self::Writer {
-            CapturedLogWriter(self.0.clone())
-        }
     }
 
     fn drive_pre_audio_order_test_seam(events: &[PreAudioOrderEvent]) -> Vec<&'static str> {
@@ -5253,6 +5253,9 @@
             controlled_fixture_probe(&payload, call_id, trace_id, &sender, Some("user-1"))
                 .expect("valid probe");
         assert_eq!(pending.sequence, "fixture-01");
+        assert_eq!(pending.call_id_hash, sha256_hex(call_id));
+        assert_eq!(pending.call_trace_id_hash, sha256_hex(trace_id));
+        assert_eq!(pending.generation, CONTROLLED_FIXTURE_GENERATION);
         assert!(
             controlled_fixture_probe(&payload, call_id, "other-trace", &sender, Some("user-1"),)
                 .is_none()
@@ -5325,47 +5328,66 @@
     }
 
     #[test]
-    fn controlled_fixture_probe_failure_log_is_fixed_redacted_and_has_no_audio_effect() {
-        let logs = CapturedLogs::default();
-        let subscriber = tracing_subscriber::fmt()
-            .without_time()
-            .with_ansi(false)
-            .with_writer(logs.clone())
-            .finish();
+    fn controlled_fixture_probe_runtime_projection_binds_request_hashes_and_audio_gate() {
         let call_id = "private-call-value";
         let trace_id = "private-trace-value";
         let sequence = "private-sequence-value";
+        let call_id_hash = sha256_hex(call_id);
+        let trace_id_hash = sha256_hex(trace_id);
         let mut observer_starts = 0;
-        tracing::subscriber::with_default(subscriber, || {
-            let decision = Err("wrong_source");
-            let (ack_result, reject_reason, observed) =
-                record_controlled_fixture_attribute_decision(decision, call_id, trace_id, sequence);
-            record_controlled_fixture_probe_event(
-                "audio_observer_blocked",
-                call_id,
-                trace_id,
+        let (ack_result, reject_reason, observed) =
+            controlled_fixture_ack_classification(Err("wrong_source"));
+        let stages = [
+            ("data_received", None, None),
+            ("attributes_classified", Some(ack_result), reject_reason),
+            ("ack_publish_started", Some(ack_result), reject_reason),
+            ("ack_publish_completed", Some(ack_result), reject_reason),
+            ("audio_observer_blocked", Some(ack_result), reject_reason),
+        ];
+        for (stage, result, reason) in stages {
+            let event = controlled_fixture_probe_event(
+                stage,
+                &call_id_hash,
+                &trace_id_hash,
+                CONTROLLED_FIXTURE_GENERATION,
                 sequence,
                 observed,
-                Some(ack_result),
-                reject_reason,
+                result,
+                reason,
             );
-            assert!(!start_observer_after_controlled_fixture_probe(
-                true,
-                Some(observed),
-                || observer_starts += 1,
-            ));
-        });
-        let output = String::from_utf8(logs.0.lock().unwrap().clone()).unwrap();
-        assert!(output.contains("ack_result=\"rejected\""));
-        assert!(output.contains("reject_reason=\"wrong_source\""));
-        assert!(output.contains("observed=false"));
-        assert!(output.contains(&sha256_hex(call_id)));
-        assert!(output.contains(&sha256_hex(trace_id)));
-        assert!(output.contains(&sha256_hex(sequence)));
-        assert!(!output.contains(call_id));
-        assert!(!output.contains(trace_id));
-        assert!(!output.contains(sequence));
+            assert_eq!(event["call_id_hash"], call_id_hash);
+            assert_eq!(event["trace_id_hash"], trace_id_hash);
+            assert_eq!(event["stage"], stage);
+            let output = event.to_string();
+            assert!(!output.contains(call_id));
+            assert!(!output.contains(trace_id));
+            assert!(!output.contains(sequence));
+        }
+        assert!(!start_observer_after_controlled_fixture_probe(
+            true,
+            Some(observed),
+            || observer_starts += 1,
+        ));
         assert_eq!(observer_starts, 0);
+
+        let (ack_result, reject_reason, observed) = controlled_fixture_ack_classification(Ok(()));
+        let allowed = controlled_fixture_probe_event(
+            "audio_observer_allowed",
+            &call_id_hash,
+            &trace_id_hash,
+            CONTROLLED_FIXTURE_GENERATION,
+            sequence,
+            observed,
+            Some(ack_result),
+            reject_reason,
+        );
+        assert_eq!(allowed["trace_id_hash"], trace_id_hash);
+        assert!(start_observer_after_controlled_fixture_probe(
+            true,
+            Some(observed),
+            || observer_starts += 1,
+        ));
+        assert_eq!(observer_starts, 1);
     }
 
     #[test]
@@ -5396,6 +5418,51 @@
         );
     }
 
+    #[test]
+    fn production_probe_binding_drives_rejected_and_observed_ack_without_local_rehash() {
+        let request_call_hash = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
+        let request_trace_hash = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
+        let probe = PendingControlledFixtureProbe {
+            sender: ParticipantIdentity("user-1".to_string()),
+            call_id_hash: request_call_hash.to_string(),
+            call_trace_id_hash: request_trace_hash.to_string(),
+            generation: CONTROLLED_FIXTURE_GENERATION,
+            sequence: "fixture-01".to_string(),
+            expires_at: Instant::now() + CONTROLLED_FIXTURE_PROBE_TTL,
+        };
+
+        let (ack_result, reject_reason, observed) =
+            controlled_fixture_ack_classification(Err("wrong_sequence"));
+        let rejected_ack = controlled_fixture_ack_from_probe(&probe, observed, reject_reason);
+        let rejected_json = serde_json::to_value(&rejected_ack).unwrap();
+        let mut rejected_observer_starts = 0;
+        assert_eq!(ack_result, "rejected");
+        assert_eq!(rejected_json["callIdHash"], request_call_hash);
+        assert_eq!(rejected_json["callTraceIdHash"], request_trace_hash);
+        assert_eq!(rejected_json["rejectReason"], "wrong_sequence");
+        assert!(!start_observer_after_controlled_fixture_probe(
+            true,
+            Some(observed),
+            || rejected_observer_starts += 1,
+        ));
+        assert_eq!(rejected_observer_starts, 0);
+
+        let (ack_result, reject_reason, observed) = controlled_fixture_ack_classification(Ok(()));
+        let observed_ack = controlled_fixture_ack_from_probe(&probe, observed, reject_reason);
+        let observed_json = serde_json::to_value(&observed_ack).unwrap();
+        let mut observed_observer_starts = 0;
+        assert_eq!(ack_result, "observed");
+        assert_eq!(observed_json["callIdHash"], request_call_hash);
+        assert_eq!(observed_json["callTraceIdHash"], request_trace_hash);
+        assert!(observed_json.get("rejectReason").is_none());
+        assert!(start_observer_after_controlled_fixture_probe(
+            true,
+            Some(observed),
+            || observed_observer_starts += 1,
+        ));
+        assert_eq!(observed_observer_starts, 1);
+    }
+
     #[tokio::test]
     async fn production_ack_publish_failure_keeps_observer_session_and_audio_closed() {
         let mut acknowledged = HashSet::new();
@@ -5406,6 +5473,7 @@
             None,
             "call-publish-failure",
             "trace-publish-failure",
+            CONTROLLED_FIXTURE_GENERATION,
             "fixture-01",
             &mut acknowledged,
         )
@@ -5438,6 +5506,7 @@
             None,
             "call-publish-success",
             "trace-publish-success",
+            CONTROLLED_FIXTURE_GENERATION,
             "fixture-02",
             &mut acknowledged,
         )

--
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