Fix ping, primary detection. More logging.

main.go

@@ -15,7 +15,8 @@ import (
 
 const version = "1.0"
 const GroupStatePrimary = "primary"
-const GroupStatePrimaryAlone = "wait-primary"
+const GroupStatePrimaryDegraded = "wait-primary"
+const GroupStatePrimaryAlone = "single"
 const GroupStateStandby = "secondary"
 const DefaultFormation = "default"
 const DefaultSocketPath = "/var/run/pg_autoconfig.sock"
@@ -218,6 +219,7 @@ func main() {
 				} else if !bytes.Equal(newState, lastSentStateJson) {
 					// Send the new state
 					lastSentStateJson = newState
+					log.WithFields(log.Fields{"state": string(newState)}).Info("Sending configuration to the peer process")
 					if response, err := httpc.Post("http://unix/config", "application/octet-stream", bytes.NewReader(newState)); err != nil {
 						log.WithError(err).WithFields(log.Fields{"response": response}).Warn("Failed to send configuration to the peer process.")
 					}
@@ -227,6 +229,7 @@ func main() {
 			// Send a periodic ping to the configuration worker
 			if pingWaitCounter == CyclesPerPing {
 				pingWaitCounter = 0
+				log.Trace("Pinging configuration peer")
 				if response, err := httpc.Get("http://unix/ping"); err != nil {
 					log.WithError(err).WithFields(log.Fields{"response": response}).Trace("Failed to ping to the peer process.")
 				} else {
@@ -234,13 +237,17 @@ func main() {
 					if err := json.NewDecoder(response.Body).Decode(&msg); err != nil {
 						log.WithError(err).Warn("Failed to decode ping response.")
 					} else {
+						log.WithFields(log.Fields{"Response": msg}).Trace("Ping response")
 						if msg.NeedsConfig {
+							log.WithFields(log.Fields{"state": string(lastSentStateJson)}).Info("Sending configuration to the peer process")
 							if response, err := httpc.Post("http://unix/config", "application/octet-stream", bytes.NewReader(lastSentStateJson)); err != nil {
 								log.WithError(err).WithFields(log.Fields{"response": response}).Warn("Failed to send configuration to the peer process.")
 							}
 						}
 					}
 				}
+			} else {
+				pingWaitCounter++
 			}
 
 			time.Sleep(1000 * time.Millisecond)
@@ -264,12 +271,13 @@ func (t *pgpoolConfiguration) configure(nodes []postgresInstance) ([]byte, error
 	for _, i := range nodes {
 		var isPrimary bool
 		switch i.AssignedState {
-		case GroupStatePrimary, GroupStatePrimaryAlone:
+		case GroupStatePrimary, GroupStatePrimaryDegraded, GroupStatePrimaryAlone:
 			isPrimary = true
 		case GroupStateStandby:
 			isPrimary = false
 		default:
 			// Skip the node as it is not ready to accept connections
+			log.WithFields(log.Fields{"nodeId": i.NodeId, "nodeName": i.NodeName, "port": i.NodePort, "assignedState": i.AssignedState, "currentState": i.CurrentState}).Trace("Skipping node.")
 			continue
 		}