Add additional logging around resource polling

environment/docker/container.go

@@ -61,7 +61,11 @@ func (e *Environment) Attach() error {
 		// from being reached until it is completed if not run in a seperate process. However,
 		// we still want it to be stopped when the copy operation below is finished running which
 		// indicates that the container is no longer running.
-		go e.pollResources(ctx)
+		go func(ctx context.Context) {
+			if err := e.pollResources(ctx); err != nil {
+				log.WithField("environment_id", e.Id).WithField("error", errors.WithStack(err)).Error("error during environment resource polling")
+			}
+		}(ctx)
 
 		// Stream the reader output to the console which will then fire off events and handle console
 		// throttling and sending the output to the user.

environment/docker/stats.go

@@ -38,11 +38,14 @@ func (e *Environment) pollResources(ctx context.Context) error {
 					log.WithField("container_id", e.Id).Warn("encountered error processing docker stats output, stopping collection")
 				}
 
+				log.WithField("container_id", e.Id).Debug("detected io.EOF, stopping resource polling")
 				return nil
 			}
 
 			// Disable collection if the server is in an offline state and this process is still running.
 			if e.State() == environment.ProcessOfflineState {
+				log.WithField("container_id", e.Id).Debug("process in offline state while resource polling is still active; stopping poll")
+
 				return nil
 			}
 
@@ -66,10 +69,13 @@ func (e *Environment) pollResources(ctx context.Context) error {
 				},
 			}
 
-			b, _ := json.Marshal(st)
+			if b, err := json.Marshal(st); err != nil {
+				log.WithField("container_id", e.Id).WithField("error", errors.WithStack(err)).Warn("error while marshaling stats object for environment")
+			} else {
 				e.Events().Publish(environment.ResourceEvent, string(b))
 			}
 		}
+	}
 }
 
 // The "docker stats" CLI call does not return the same value as the types.MemoryStats.Usage

router/websocket/listeners.go

@@ -28,7 +28,7 @@ func (h *Handler) ListenForExpiration(ctx context.Context) {
 			if jwt != nil {
 				if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 0 {
 					_ = h.SendJson(&Message{Event: TokenExpiredEvent})
-				} else if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 180 {
+				} else if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 60 {
 					_ = h.SendJson(&Message{Event: TokenExpiringEvent})
 				}
 			}