feat(controller): Add ratelimiter http middleware

internal/daemon/controller/controller.go

@@ -50,6 +50,7 @@ import (
 	external_plugins "github.com/hashicorp/boundary/sdk/plugins"
 	"github.com/hashicorp/boundary/version"
 	"github.com/hashicorp/go-hclog"
+	"github.com/hashicorp/go-rate"
 	"github.com/hashicorp/go-secure-stdlib/mlock"
 	"github.com/hashicorp/go-secure-stdlib/pluginutil/v2"
 	"github.com/hashicorp/nodeenrollment"
@@ -119,6 +120,8 @@ type Controller struct {
 	apiGrpcServerListener grpcServerListener
 	apiGrpcGatewayTicket  string
 
+	rateLimiter *rate.Limiter
+
 	// Repo factory methods
 	AuthTokenRepoFn           common.AuthTokenRepoFactory
 	VaultCredentialRepoFn     common.VaultCredentialRepoFactory
@@ -245,6 +248,16 @@ func New(ctx context.Context, conf *Config) (*Controller, error) {
 	}
 	c.clusterListener = clusterListeners[0]
 
+	rateLimits, err := conf.RawConfig.Controller.ApiRateLimits.Limits(c.baseContext)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing rate limit configuration: %w", err)
+	}
+
+	c.rateLimiter, err = rate.NewLimiter(rateLimits, conf.RawConfig.Controller.ApiRateLimiterMaxEntries)
+	if err != nil {
+		return nil, fmt.Errorf("error initializing rate limiter: %w", err)
+	}
+
 	var pluginLogger hclog.Logger
 	for _, enabledPlugin := range c.enabledPlugins {
 		if pluginLogger == nil {

internal/daemon/controller/handler.go

@@ -46,6 +46,7 @@ import (
 	"github.com/hashicorp/boundary/internal/gen/controller/api/services"
 	authpb "github.com/hashicorp/boundary/internal/gen/controller/auth"
 	opsservices "github.com/hashicorp/boundary/internal/gen/ops/services"
+	"github.com/hashicorp/boundary/internal/ratelimit"
 	"github.com/hashicorp/go-cleanhttp"
 	"github.com/hashicorp/go-secure-stdlib/listenerutil"
 	"github.com/hashicorp/go-secure-stdlib/strutil"
@@ -73,7 +74,7 @@ func createMuxWithEndpoints(c *Controller, props HandlerProperties) (http.Handle
 	}
 
 	mux := http.NewServeMux()
-	mux.Handle("/v1/", grpcGwMux)
+	mux.Handle("/v1/", ratelimit.Handler(c.rateLimiter, grpcGwMux))
 	mux.Handle(uiPath, handleUi(c))
 
 	isUiRequest := func(req *http.Request) bool {