Repository: traefik/traefik
File: cmd/traefik/traefik.go (Go)

Code before:
			return nil, fmt.Errorf("unable to create SemConv metric registry: %w", err)
		}
	}
	metricsRegistry := metrics.NewMultiRegistry(metricRegistries)
	accessLog := setupAccessLog(staticConfiguration.AccessLog)
	tracer, tracerCloser := setupTracing(staticConfiguration.Tracing)
	observabilityMgr := middleware.NewObservabilityMgr(*staticConfiguration, metricsRegistry, semConvMetricRegistry, accessLog, tracer, tracerCloser)

	// Entrypoints

	serverEntryPointsTCP, err := server.NewTCPEntryPoints(staticConfiguration.EntryPoints, staticConfiguration.HostResolver, metricsRegistry)
	if err != nil {
		return nil, err
	}

	serverEntryPointsUDP, err := server.NewUDPEntryPoints(staticConfiguration.EntryPoints)
	if err != nil {
		return nil, err
	}

	if staticConfiguration.API != nil {
		version.DisableDashboardAd = staticConfiguration.API.DisableDashboardAd
	}

	// Plugins
	pluginsLst := maps.Keys(staticConfiguration.Experimental.Plugins)
	pluginsLst = append(pluginsLst, maps.Keys(staticConfiguration.Experimental.LocalPlugins)...)

	pluginLogger := log.Ctx(ctx).With().Strs("plugins", pluginsLst).Logger()
	pluginLogger.Info().Msg("Loading plugins")

	pluginBuilder, err := createPluginBuilder(staticConfiguration)
	if err != nil {
		pluginLogger.Err(err).Msg("Plugins are disabled because an error has occurred.")
	} else {
		pluginLogger.Info().Msg("Plugins loaded")
	}

	// Providers plugins

	for name, conf := range staticConfiguration.Providers.Plugin {
		if pluginBuilder == nil {
			break
		}

		p, err := pluginBuilder.BuildProvider(name, conf)
		if err != nil {
			return nil, fmt.Errorf("plugin: failed to build provider: %w", err)
		}

		err = providerAggregator.AddProvider(p)

Review comment (suggestion):
```suggestion
	pluginList := maps.Keys(staticConfiguration.Experimental.Plugins)
```

Code after:
			return nil, fmt.Errorf("unable to create SemConv metric registry: %w", err)
		}
	}
	metricsRegistry := metrics.NewMultiRegistry(metricRegistries)
	accessLog := setupAccessLog(staticConfiguration.AccessLog)
	tracer, tracerCloser := setupTracing(staticConfiguration.Tracing)
	observabilityMgr := middleware.NewObservabilityMgr(*staticConfiguration, metricsRegistry, semConvMetricRegistry, accessLog, tracer, tracerCloser)

	// Entrypoints

	serverEntryPointsTCP, err := server.NewTCPEntryPoints(staticConfiguration.EntryPoints, staticConfiguration.HostResolver, metricsRegistry)
	if err != nil {
		return nil, err
	}

	serverEntryPointsUDP, err := server.NewUDPEntryPoints(staticConfiguration.EntryPoints)
	if err != nil {
		return nil, err
	}

	if staticConfiguration.API != nil {
		version.DisableDashboardAd = staticConfiguration.API.DisableDashboardAd
	}

	// Plugins
	pluginLogger := log.Ctx(ctx).With().Logger()
	hasPlugins := staticConfiguration.Experimental != nil && (staticConfiguration.Experimental.Plugins != nil || staticConfiguration.Experimental.LocalPlugins != nil)
	if hasPlugins {
		pluginsList := maps.Keys(staticConfiguration.Experimental.Plugins)
		pluginsList = append(pluginsList, maps.Keys(staticConfiguration.Experimental.LocalPlugins)...)

		pluginLogger = pluginLogger.With().Strs("plugins", pluginsList).Logger()
		pluginLogger.Info().Msg("Loading plugins...")
	}

	pluginBuilder, err := createPluginBuilder(staticConfiguration)
	if err != nil {
		pluginLogger.Err(err).Msg("Plugins are disabled because an error has occurred.")
	} else if hasPlugins {
		pluginLogger.Info().Msg("Plugins loaded.")
	}

	// Providers plugins

	for name, conf := range staticConfiguration.Providers.Plugin {
		if pluginBuilder == nil {
			break
		}

		p, err := pluginBuilder.BuildProvider(name, conf)
		if err != nil {