[PR Feedback] Rename health_check duration field to execution

More self-describing this way.

Signed-off-by: Christopher Maier <cmaier@chef.io>

components/sup/protocols/event.proto

@@ -73,9 +73,8 @@ message ServiceStoppedEvent {
 message HealthCheckEvent {
   EventMetadata event_metadata = 1;
   ServiceMetadata service_metadata = 2;
-  // The result of the health check execution
   HealthCheck result = 3;
   // If the service has a health check hook script, how long it took
   // to execute.
-  google.protobuf.Duration duration = 4;
+  google.protobuf.Duration execution = 4;
 }

components/sup/src/event.rs

@@ -182,13 +182,15 @@ pub fn service_stopped(service: &Service) {
     }
 }
 
-pub fn health_check(service: &Service, check_result: HealthCheck, duration: Option<Duration>) {
+/// `execution` will be `Some` if the service had a hook to run, and
+/// records how long it took that hook to execute completely.
+pub fn health_check(service: &Service, check_result: HealthCheck, execution: Option<Duration>) {
     if stream_initialized() {
         let check_result: types::HealthCheck = check_result.into();
         publish(HealthCheckEvent { service_metadata: Some(service.to_service_metadata()),
                                    event_metadata:   None,
                                    result:           i32::from(check_result),
-                                   duration:         duration.map(Into::into), });
+                                   execution:        execution.map(Into::into), });
     }
 }
 

components/sup/src/manager/service/mod.rs

@@ -936,14 +936,14 @@ impl Service {
         // Additionally, we'll only send the time with the health
         // check event if there's actually a hook that runs. We'll
         // default to there not being a hook, though.
-        let mut event_duration = None;
+        let mut execution_duration = None;
 
         let check_result = if let Some(ref hook) = self.hooks.health_check {
             let event_start = Instant::now();
             let result = hook.run(&self.service_group,
                                   &self.pkg,
                                   self.svc_encrypted_password.as_ref());
-            event_duration = Some(event_start.elapsed());
+            execution_duration = Some(event_start.elapsed());
             result
         } else {
             match self.supervisor.status() {
@@ -966,7 +966,7 @@ impl Service {
             self.schedule_special_health_check();
         }
         self.health_check = check_result;
-        event::health_check(&self, check_result, event_duration);
+        event::health_check(&self, check_result, execution_duration);
         self.cache_health_check(check_result);
     }