Public release release-e570b80c3a0f

Source commit: e570b80c3a0f4b152a9aa0e7bb8635b3eebcec27

Public tree identity: sha256:cff3388143eb2e9476804cfa1c1246e3a46d485d8aef90f2cdd4df45f2b69abf

crates/clusterflux-node/src/debug_agent.rs

@@ -0,0 +1,47 @@
+use std::time::{Duration, Instant};
+
+use serde_json::{json, Value};
+
+use crate::coordinator_session::CoordinatorSession;
+use crate::daemon::{Args, RuntimeTask};
+use crate::node_identity::signed_node_request_json;
+
+pub(crate) fn poll_task_cancellation(
+    session: &mut CoordinatorSession,
+    args: &Args,
+    task: &RuntimeTask,
+    node_private_key: &str,
+) -> Result<bool, Box<dyn std::error::Error>> {
+    let deadline = Instant::now() + Duration::from_millis(args.control_poll_ms);
+    loop {
+        let control = session.request(signed_node_request_json(
+            args,
+            node_private_key,
+            "poll_task_control",
+            json!({
+                "type": "poll_task_control",
+                "tenant": &args.tenant,
+                "project": &args.project,
+                "process": &task.process,
+                "node": &args.node,
+                "task": &task.task,
+            }),
+        )?)?;
+        if control
+            .get("cancel_requested")
+            .and_then(Value::as_bool)
+            .unwrap_or(false)
+            || control
+                .get("abort_requested")
+                .and_then(Value::as_bool)
+                .unwrap_or(false)
+        {
+            return Ok(true);
+        }
+        let now = Instant::now();
+        if now >= deadline {
+            return Ok(false);
+        }
+        std::thread::sleep((deadline - now).min(Duration::from_millis(100)));
+    }
+}