p2p/simulations/adapters/exec: fix some issues (#21801)

- Remove the ws:// prefix from the status endpoint since
  the ws:// is already included in the stack.WSEndpoint().
- Don't register the services again in the node start.
  Registration is already done in the initialization stage.
- Expose admin namespace via websocket.
  This namespace is necessary for connecting the peers via websocket.
- Offer logging relevant options for exec adapter.
  It's really painful to mix all log output in the single console. So
  this PR offers two additional options for exec adapter in this case
  testers can config the log output(e.g. file output) and log level
  for each p2p node.

p2p/simulations/adapters/exec.go

@@ -184,7 +184,19 @@ func (n *ExecNode) Start(snapshots map[string][]byte) (err error) {
 	if err != nil {
 		return fmt.Errorf("error generating node config: %s", err)
 	}
-
+	// expose the admin namespace via websocket if it's not enabled
+	exposed := confCopy.Stack.WSExposeAll
+	if !exposed {
+		for _, api := range confCopy.Stack.WSModules {
+			if api == "admin" {
+				exposed = true
+				break
+			}
+		}
+	}
+	if !exposed {
+		confCopy.Stack.WSModules = append(confCopy.Stack.WSModules, "admin")
+	}
 	// start the one-shot server that waits for startup information
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
@@ -362,13 +374,44 @@ type execNodeConfig struct {
 	PeerAddrs map[string]string `json:"peer_addrs,omitempty"`
 }
 
+func initLogging() {
+	// Initialize the logging by default first.
+	glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.LogfmtFormat()))
+	glogger.Verbosity(log.LvlInfo)
+	log.Root().SetHandler(glogger)
+
+	confEnv := os.Getenv(envNodeConfig)
+	if confEnv == "" {
+		return
+	}
+	var conf execNodeConfig
+	if err := json.Unmarshal([]byte(confEnv), &conf); err != nil {
+		return
+	}
+	var writer = os.Stderr
+	if conf.Node.LogFile != "" {
+		logWriter, err := os.Create(conf.Node.LogFile)
+		if err != nil {
+			return
+		}
+		writer = logWriter
+	}
+	var verbosity = log.LvlInfo
+	if conf.Node.LogVerbosity <= log.LvlTrace && conf.Node.LogVerbosity >= log.LvlCrit {
+		verbosity = conf.Node.LogVerbosity
+	}
+	// Reinitialize the logger
+	glogger = log.NewGlogHandler(log.StreamHandler(writer, log.TerminalFormat(true)))
+	glogger.Verbosity(verbosity)
+	log.Root().SetHandler(glogger)
+}
+
 // execP2PNode starts a simulation node when the current binary is executed with
 // argv[0] being "p2p-node", reading the service / ID from argv[1] / argv[2]
 // and the node config from an environment variable.
 func execP2PNode() {
-	glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.LogfmtFormat()))
-	glogger.Verbosity(log.LvlInfo)
-	log.Root().SetHandler(glogger)
+	initLogging()
+
 	statusURL := os.Getenv(envStatusURL)
 	if statusURL == "" {
 		log.Crit("missing " + envStatusURL)
@@ -380,7 +423,7 @@ func execP2PNode() {
 	if stackErr != nil {
 		status.Err = stackErr.Error()
 	} else {
-		status.WSEndpoint = "ws://" + stack.WSEndpoint()
+		status.WSEndpoint = stack.WSEndpoint()
 		status.NodeInfo = stack.Server().NodeInfo()
 	}
 
@@ -454,7 +497,6 @@ func startExecNodeStack() (*node.Node, error) {
 			return nil, err
 		}
 		services[name] = service
-		stack.RegisterLifecycle(service)
 	}
 
 	// Add the snapshot API.

p2p/simulations/adapters/types.go

@@ -120,6 +120,17 @@ type NodeConfig struct {
 	Reachable func(id enode.ID) bool
 
 	Port uint16
+
+	// LogFile is the log file name of the p2p node at runtime.
+	//
+	// The default value is empty so that the default log writer
+	// is the system standard output.
+	LogFile string
+
+	// LogVerbosity is the log verbosity of the p2p node at runtime.
+	//
+	// The default verbosity is INFO.
+	LogVerbosity log.Lvl
 }
 
 // nodeConfigJSON is used to encode and decode NodeConfig as JSON by encoding
@@ -128,10 +139,12 @@ type nodeConfigJSON struct {
 	ID              string   `json:"id"`
 	PrivateKey      string   `json:"private_key"`
 	Name            string   `json:"name"`
-	Services        []string `json:"services"`
+	Lifecycles      []string `json:"lifecycles"`
 	Properties      []string `json:"properties"`
 	EnableMsgEvents bool     `json:"enable_msg_events"`
 	Port            uint16   `json:"port"`
+	LogFile         string   `json:"logfile"`
+	LogVerbosity    int      `json:"log_verbosity"`
 }
 
 // MarshalJSON implements the json.Marshaler interface by encoding the config
@@ -140,10 +153,12 @@ func (n *NodeConfig) MarshalJSON() ([]byte, error) {
 	confJSON := nodeConfigJSON{
 		ID:              n.ID.String(),
 		Name:            n.Name,
-		Services:        n.Lifecycles,
+		Lifecycles:      n.Lifecycles,
 		Properties:      n.Properties,
 		Port:            n.Port,
 		EnableMsgEvents: n.EnableMsgEvents,
+		LogFile:         n.LogFile,
+		LogVerbosity:    int(n.LogVerbosity),
 	}
 	if n.PrivateKey != nil {
 		confJSON.PrivateKey = hex.EncodeToString(crypto.FromECDSA(n.PrivateKey))
@@ -178,10 +193,12 @@ func (n *NodeConfig) UnmarshalJSON(data []byte) error {
 	}
 
 	n.Name = confJSON.Name
-	n.Lifecycles = confJSON.Services
+	n.Lifecycles = confJSON.Lifecycles
 	n.Properties = confJSON.Properties
 	n.Port = confJSON.Port
 	n.EnableMsgEvents = confJSON.EnableMsgEvents
+	n.LogFile = confJSON.LogFile
+	n.LogVerbosity = log.Lvl(confJSON.LogVerbosity)
 
 	return nil
 }
@@ -211,6 +228,7 @@ func RandomNodeConfig() *NodeConfig {
 		Name:            fmt.Sprintf("node_%s", enodId.String()),
 		Port:            port,
 		EnableMsgEvents: true,
+		LogVerbosity:    log.LvlInfo,
 	}
 }