Add encodings option to the compression middleware

pkg/provider/kubernetes/crd/kubernetes.go

@@ -304,7 +304,7 @@ func (p *Provider) loadConfigurationFromCRD(ctx context.Context, client Client)
 			InFlightReq:       middleware.Spec.InFlightReq,
 			Buffering:         middleware.Spec.Buffering,
 			CircuitBreaker:    circuitBreaker,
-			Compress:          middleware.Spec.Compress,
+			Compress:          createCompressMiddleware(middleware.Spec.Compress),
 			PassTLSClientCert: middleware.Spec.PassTLSClientCert,
 			Retry:             retry,
 			ContentType:       middleware.Spec.ContentType,
@@ -655,14 +655,49 @@ func createCircuitBreakerMiddleware(circuitBreaker *traefikv1alpha1.CircuitBreak
 	return cb, nil
 }
 
+func createCompressMiddleware(compress *traefikv1alpha1.Compress) *dynamic.Compress {
+	if compress == nil {
+		return nil
+	}
+
+	c := &dynamic.Compress{}
+	c.SetDefaults()
+
+	if compress.ExcludedContentTypes != nil {
+		c.ExcludedContentTypes = compress.ExcludedContentTypes
+	}
+
+	if compress.IncludedContentTypes != nil {
+		c.IncludedContentTypes = compress.IncludedContentTypes
+	}
+
+	if compress.MinResponseBodyBytes != nil {
+		c.MinResponseBodyBytes = *compress.MinResponseBodyBytes
+	}
+
+	if compress.Encodings != nil {
+		c.Encodings = compress.Encodings
+	}
+
+	if compress.DefaultEncoding != nil {
+		c.DefaultEncoding = *compress.DefaultEncoding
+	}
+
+	return c
+}
+
 func createRateLimitMiddleware(rateLimit *traefikv1alpha1.RateLimit) (*dynamic.RateLimit, error) {
 	if rateLimit == nil {
 		return nil, nil
 	}
 
-	rl := &dynamic.RateLimit{Average: rateLimit.Average}
+	rl := &dynamic.RateLimit{}
 	rl.SetDefaults()
 
+	if rateLimit.Average != nil {
+		rl.Average = *rateLimit.Average
+	}
+
 	if rateLimit.Burst != nil {
 		rl.Burst = *rateLimit.Burst
 	}

pkg/provider/kubernetes/crd/traefikio/v1alpha1/middleware.go

@@ -46,7 +46,7 @@ type MiddlewareSpec struct {
 	InFlightReq       *dynamic.InFlightReq       `json:"inFlightReq,omitempty"`
 	Buffering         *dynamic.Buffering         `json:"buffering,omitempty"`
 	CircuitBreaker    *CircuitBreaker            `json:"circuitBreaker,omitempty"`
-	Compress          *dynamic.Compress          `json:"compress,omitempty"`
+	Compress          *Compress                  `json:"compress,omitempty"`
 	PassTLSClientCert *dynamic.PassTLSClientCert `json:"passTLSClientCert,omitempty"`
 	Retry             *Retry                     `json:"retry,omitempty"`
 	ContentType       *dynamic.ContentType       `json:"contentType,omitempty"`
@@ -188,7 +188,7 @@ type RateLimit struct {
 	// It defaults to 0, which means no rate limiting.
 	// The rate is actually defined by dividing Average by Period. So for a rate below 1req/s,
 	// one needs to define a Period larger than a second.
-	Average int64 `json:"average,omitempty"`
+	Average *int64 `json:"average,omitempty"`
 	// Period, in combination with Average, defines the actual maximum rate, such as:
 	// r = Average / Period. It defaults to a second.
 	Period *intstr.IntOrString `json:"period,omitempty"`
@@ -203,6 +203,26 @@ type RateLimit struct {
 
 // +k8s:deepcopy-gen=true
 
+// Compress holds the compress middleware configuration.
+// This middleware compresses responses before sending them to the client, using gzip, brotli, or zstd compression.
+// More info: https://doc.traefik.io/traefik/v3.1/middlewares/http/compress/
+type Compress struct {
+	// ExcludedContentTypes defines the list of content types to compare the Content-Type header of the incoming requests and responses before compressing.
+	// `application/grpc` is always excluded.
+	ExcludedContentTypes []string `json:"excludedContentTypes,omitempty"`
+	// IncludedContentTypes defines the list of content types to compare the Content-Type header of the responses before compressing.
+	IncludedContentTypes []string `json:"includedContentTypes,omitempty"`
+	// MinResponseBodyBytes defines the minimum amount of bytes a response body must have to be compressed.
+	// Default: 1024.
+	MinResponseBodyBytes *int `json:"minResponseBodyBytes,omitempty"`
+	// Encodings defines the list of supported compression algorithms.
+	Encodings []string `json:"encodings,omitempty"`
+	// DefaultEncoding specifies the default encoding if the `Accept-Encoding` header is not in the request or contains a wildcard (`*`).
+	DefaultEncoding *string `json:"defaultEncoding,omitempty"`
+}
+
+// +k8s:deepcopy-gen=true
+
 // Retry holds the retry middleware configuration.
 // This middleware reissues requests a given number of times to a backend server if that server does not reply.
 // As soon as the server answers, the middleware stops retrying, regardless of the response status.

pkg/provider/kubernetes/crd/traefikio/v1alpha1/zz_generated.deepcopy.go

@@ -164,6 +164,47 @@ func (in *ClientTLS) DeepCopy() *ClientTLS {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Compress) DeepCopyInto(out *Compress) {
+	*out = *in
+	if in.ExcludedContentTypes != nil {
+		in, out := &in.ExcludedContentTypes, &out.ExcludedContentTypes
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.IncludedContentTypes != nil {
+		in, out := &in.IncludedContentTypes, &out.IncludedContentTypes
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.MinResponseBodyBytes != nil {
+		in, out := &in.MinResponseBodyBytes, &out.MinResponseBodyBytes
+		*out = new(int)
+		**out = **in
+	}
+	if in.Encodings != nil {
+		in, out := &in.Encodings, &out.Encodings
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.DefaultEncoding != nil {
+		in, out := &in.DefaultEncoding, &out.DefaultEncoding
+		*out = new(string)
+		**out = **in
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Compress.
+func (in *Compress) DeepCopy() *Compress {
+	if in == nil {
+		return nil
+	}
+	out := new(Compress)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DigestAuth) DeepCopyInto(out *DigestAuth) {
 	*out = *in
@@ -776,7 +817,7 @@ func (in *MiddlewareSpec) DeepCopyInto(out *MiddlewareSpec) {
 	}
 	if in.Compress != nil {
 		in, out := &in.Compress, &out.Compress
-		*out = new(dynamic.Compress)
+		*out = new(Compress)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.PassTLSClientCert != nil {
@@ -975,6 +1016,11 @@ func (in *ObjectReference) DeepCopy() *ObjectReference {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *RateLimit) DeepCopyInto(out *RateLimit) {
 	*out = *in
+	if in.Average != nil {
+		in, out := &in.Average, &out.Average
+		*out = new(int64)
+		**out = **in
+	}
 	if in.Period != nil {
 		in, out := &in.Period, &out.Period
 		*out = new(intstr.IntOrString)