static plugin

Author: jpinsonneau

.mk/static.mk

@@ -0,0 +1,6 @@
+##@ Static
+
+.PHONY: build-frontend-static
+build-frontend-static: install-frontend fmt-frontend ## Run npm install, format and build static frontend
+	@echo "### Building static frontend"
+	cd web && npm run build:static

Dockerfile.cypress

@@ -19,6 +19,7 @@ COPY mocks mocks
 WORKDIR /opt/app-root/web
 RUN npm run format-all
 RUN npm run build$BUILDSCRIPT
+RUN npm run build:static
 
 FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.23 as go-builder
 

Dockerfile.front

@@ -17,6 +17,7 @@ COPY mocks mocks
 WORKDIR /opt/app-root/web
 RUN npm run format-all
 RUN npm run build$BUILDSCRIPT
+RUN npm run build:static
 
 FROM scratch
 

Dockerfile.front.downstream

@@ -16,6 +16,7 @@ COPY  --chown=default mocks mocks
 WORKDIR /opt/app-root/web
 RUN npm run format-all
 RUN npm run build$BUILDSCRIPT
+RUN npm run build:static
 
 FROM scratch
 

Makefile

@@ -223,3 +223,4 @@ endif
 include .mk/cypress.mk
 include .mk/shortcuts.mk
 include .mk/standalone.mk
+include .mk/static.mk

pkg/config/config.go

@@ -146,12 +146,15 @@ type Config struct {
 	Frontend   Frontend   `yaml:"frontend" json:"frontend"`
 	Server     Server     `yaml:"server,omitempty" json:"server,omitempty"`
 	Path       string     `yaml:"-" json:"-"`
+	Static     bool
 }
 
 func ReadFile(version, date, filename string) (*Config, error) {
+	isStatic := len(filename) == 0
 	// set default values
 	cfg := Config{
-		Path: filename,
+		Path:   filename,
+		Static: isStatic,
 		Server: Server{
 			Port:        9001,
 			MetricsPort: 9002,
@@ -193,7 +196,10 @@ func ReadFile(version, date, filename string) (*Config, error) {
 			PromLabels:  []string{},
 		},
 	}
-	if len(filename) == 0 {
+	if isStatic {
+		// Force TLS
+		cfg.Server.CertPath = "/var/serving-cert/tls.crt"
+		cfg.Server.KeyPath = "/var/serving-cert/tls.key"
 		return &cfg, nil
 	}
 	yamlFile, err := os.ReadFile(filename)
@@ -243,7 +249,7 @@ func (c *Config) IsPromEnabled() bool {
 }
 
 func (c *Config) Validate() error {
-	if !c.IsLokiEnabled() && !c.IsPromEnabled() {
+	if !c.Static && !c.IsLokiEnabled() && !c.IsPromEnabled() {
 		return errors.New("neither Loki nor Prometheus is configured; at least one of them should have a URL defined")
 	}
 

pkg/server/routes.go

@@ -41,28 +41,34 @@ func setupRoutes(ctx context.Context, cfg *config.Config, authChecker auth.Check
 		})
 	})
 
-	// Server status
+	// Server status and config
 	api.HandleFunc("/status", h.Status(ctx))
+	api.HandleFunc("/frontend-config", h.GetFrontendConfig())
 
-	// Loki endpoints
-	api.HandleFunc("/loki/ready", h.LokiReady())
-	api.HandleFunc("/loki/metrics", forceCheckAdmin(authChecker, h.LokiMetrics()))
-	api.HandleFunc("/loki/buildinfo", forceCheckAdmin(authChecker, h.LokiBuildInfos()))
-	api.HandleFunc("/loki/config/limits", forceCheckAdmin(authChecker, h.LokiLimits()))
-	api.HandleFunc("/loki/flow/records", h.GetFlows(ctx))
-	api.HandleFunc("/loki/export", h.ExportFlows(ctx))
+	if cfg.Static {
+		// Expose static files only
+		r.PathPrefix("/").Handler(http.FileServer(http.Dir("./web/dist/static")))
+	} else {
+		// Loki endpoints
+		api.HandleFunc("/loki/ready", h.LokiReady())
+		api.HandleFunc("/loki/metrics", forceCheckAdmin(authChecker, h.LokiMetrics()))
+		api.HandleFunc("/loki/buildinfo", forceCheckAdmin(authChecker, h.LokiBuildInfos()))
+		api.HandleFunc("/loki/config/limits", forceCheckAdmin(authChecker, h.LokiLimits()))
+		api.HandleFunc("/loki/flow/records", h.GetFlows(ctx))
+		api.HandleFunc("/loki/export", h.ExportFlows(ctx))
 
-	// Common endpoints
-	api.HandleFunc("/flow/metrics", h.GetTopology(ctx))
-	api.HandleFunc("/resources/clusters", h.GetClusters(ctx))
-	api.HandleFunc("/resources/udns", h.GetUDNs(ctx))
-	api.HandleFunc("/resources/zones", h.GetZones(ctx))
-	api.HandleFunc("/resources/namespaces", h.GetNamespaces(ctx))
-	api.HandleFunc("/resources/names", h.GetNames(ctx))
+		// Common endpoints
+		api.HandleFunc("/flow/metrics", h.GetTopology(ctx))
+		api.HandleFunc("/resources/clusters", h.GetClusters(ctx))
+		api.HandleFunc("/resources/udns", h.GetUDNs(ctx))
+		api.HandleFunc("/resources/zones", h.GetZones(ctx))
+		api.HandleFunc("/resources/namespaces", h.GetNamespaces(ctx))
+		api.HandleFunc("/resources/names", h.GetNames(ctx))
+
+		// Frontend files
+		r.PathPrefix("/").Handler(http.FileServer(http.Dir("./web/dist/")))
+	}
 
-	// Frontend files
-	api.HandleFunc("/frontend-config", h.GetFrontendConfig())
-	r.PathPrefix("/").Handler(http.FileServer(http.Dir("./web/dist/")))
 	return r
 }