16217: Error out if (*pq.Listener)Ping() fails.

[arvados.git] / services / ws / event_source.go

diff --git a/services/ws/event_source.go b/services/ws/event_source.go
index 6ac8e013523d97cc45643a60d0a35deac809eb61..3a82bf62b3e9351a95d2abe4c56ae942fededa4c 100644 (file)
--- a/services/ws/event_source.go
+++ b/services/ws/event_source.go
@@ -7,6 +7,8 @@ package main
 import (
        "context"
        "database/sql"
+       "errors"
+       "fmt"
        "strconv"
        "sync"
        "sync/atomic"
@@ -166,11 +168,15 @@ func (ps *pgEventSource) Run() {
 
                case <-ticker.C:
                        logger(nil).Debug("listener ping")
-                       ps.pqListener.Ping()
+                       err := ps.pqListener.Ping()
+                       if err != nil {
+                               ps.listenerProblem(-1, fmt.Errorf("pqListener ping failed: %s", err))
+                               continue
+                       }
 
                case pqEvent, ok := <-ps.pqListener.Notify:
                        if !ok {
-                               logger(nil).Debug("pqListener Notify chan closed")
+                               logger(nil).Error("pqListener Notify chan closed")
                                return
                        }
                        if pqEvent == nil {
@@ -178,7 +184,7 @@ func (ps *pgEventSource) Run() {
                                // itself in addition to sending us a
                                // nil event, so this might be
                                // superfluous:
-                               ps.listenerProblem(-1, nil)
+                               ps.listenerProblem(-1, errors.New("pqListener Notify chan received nil event"))
                                continue
                        }
                        if pqEvent.Channel != "logs" {