feat: tries to use swarm node id if exists then machine-id (#3097)

examples/docker.swarm.yml

@@ -1,6 +1,6 @@
 services:
   dozzle:
-    image: amir20/dozzle:agent
+    image: amir20/dozzle:pr-3097
     environment:
       - DOZZLE_LEVEL=debug
       - DOZZLE_MODE=swarm

internal/docker/client.go

@@ -87,18 +87,19 @@ func NewClient(cli DockerCLI, filters filters.Args, host Host) Client {
 		filters: filters,
 		host:    host,
 	}
+	var err error
+	client.info, err = cli.Info(context.Background())
+	if err != nil {
+		log.Errorf("unable to get docker info: %v", err)
+	}
 
 	if host.MemTotal == 0 || host.NCPU == 0 {
-		var err error
-		client.info, err = cli.Info(context.Background())
-		if err != nil {
-			log.Errorf("unable to get docker info: %v", err)
-		}
-
 		host.NCPU = client.info.NCPU
 		host.MemTotal = client.info.MemTotal
 	}
 
+	log.Debugf("Creating a client with host: %+v", host)
+
 	return client
 }
 
@@ -124,8 +125,13 @@ func NewLocalClient(f map[string][]string, hostname string) (Client, error) {
 		return nil, err
 	}
 
+	id := info.ID
+	if info.Swarm.NodeID != "" {
+		id = info.Swarm.NodeID
+	}
+
 	host := Host{
-		ID:       info.ID,
+		ID:       id,
 		Name:     info.Name,
 		MemTotal: info.MemTotal,
 		NCPU:     info.NCPU,

internal/support/docker/multi_host_service.go

@@ -114,7 +114,7 @@ func NewSwarmService(localClient docker.Client, certificates tls.Certificate) *M
 }
 
 func closeAgent(agent *agent.Client) {
-	log.Debugf("closing agent %s", agent.Host().ID)
+	log.Tracef("closing agent %s", agent.Host())
 	if err := agent.Close(); err != nil {
 		log.Warnf("error closing agent: %v", err)
 	}