223 lines
12 KiB
Go
223 lines
12 KiB
Go
package v1alpha1
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import (
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
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apiextensionv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/intstr"
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)
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// +genclient
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// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
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// +kubebuilder:storageversion
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// Middleware is the CRD implementation of a Traefik Middleware.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/overview/
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type Middleware struct {
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metav1.TypeMeta `json:",inline"`
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// Standard object's metadata.
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// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
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metav1.ObjectMeta `json:"metadata"`
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Spec MiddlewareSpec `json:"spec"`
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}
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// +k8s:deepcopy-gen=true
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// MiddlewareSpec defines the desired state of a Middleware.
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type MiddlewareSpec struct {
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AddPrefix *dynamic.AddPrefix `json:"addPrefix,omitempty"`
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StripPrefix *dynamic.StripPrefix `json:"stripPrefix,omitempty"`
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StripPrefixRegex *dynamic.StripPrefixRegex `json:"stripPrefixRegex,omitempty"`
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ReplacePath *dynamic.ReplacePath `json:"replacePath,omitempty"`
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ReplacePathRegex *dynamic.ReplacePathRegex `json:"replacePathRegex,omitempty"`
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Chain *Chain `json:"chain,omitempty"`
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IPAllowList *dynamic.IPAllowList `json:"ipAllowList,omitempty"`
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Headers *dynamic.Headers `json:"headers,omitempty"`
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Errors *ErrorPage `json:"errors,omitempty"`
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RateLimit *RateLimit `json:"rateLimit,omitempty"`
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RedirectRegex *dynamic.RedirectRegex `json:"redirectRegex,omitempty"`
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RedirectScheme *dynamic.RedirectScheme `json:"redirectScheme,omitempty"`
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BasicAuth *BasicAuth `json:"basicAuth,omitempty"`
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DigestAuth *DigestAuth `json:"digestAuth,omitempty"`
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ForwardAuth *ForwardAuth `json:"forwardAuth,omitempty"`
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InFlightReq *dynamic.InFlightReq `json:"inFlightReq,omitempty"`
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Buffering *dynamic.Buffering `json:"buffering,omitempty"`
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CircuitBreaker *CircuitBreaker `json:"circuitBreaker,omitempty"`
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Compress *dynamic.Compress `json:"compress,omitempty"`
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PassTLSClientCert *dynamic.PassTLSClientCert `json:"passTLSClientCert,omitempty"`
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Retry *Retry `json:"retry,omitempty"`
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ContentType *dynamic.ContentType `json:"contentType,omitempty"`
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GrpcWeb *dynamic.GrpcWeb `json:"grpcWeb,omitempty"`
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// Plugin defines the middleware plugin configuration.
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// More info: https://doc.traefik.io/traefik/plugins/
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Plugin map[string]apiextensionv1.JSON `json:"plugin,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// ErrorPage holds the custom error middleware configuration.
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// This middleware returns a custom page in lieu of the default, according to configured ranges of HTTP Status codes.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/errorpages/
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type ErrorPage struct {
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// Status defines which status or range of statuses should result in an error page.
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// It can be either a status code as a number (500),
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// as multiple comma-separated numbers (500,502),
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// as ranges by separating two codes with a dash (500-599),
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// or a combination of the two (404,418,500-599).
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Status []string `json:"status,omitempty"`
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// Service defines the reference to a Kubernetes Service that will serve the error page.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/errorpages/#service
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Service Service `json:"service,omitempty"`
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// Query defines the URL for the error page (hosted by service).
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// The {status} variable can be used in order to insert the status code in the URL.
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Query string `json:"query,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// CircuitBreaker holds the circuit breaker configuration.
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type CircuitBreaker struct {
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// Expression is the condition that triggers the tripped state.
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Expression string `json:"expression,omitempty" toml:"expression,omitempty" yaml:"expression,omitempty" export:"true"`
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// CheckPeriod is the interval between successive checks of the circuit breaker condition (when in standby state).
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CheckPeriod *intstr.IntOrString `json:"checkPeriod,omitempty" toml:"checkPeriod,omitempty" yaml:"checkPeriod,omitempty" export:"true"`
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// FallbackDuration is the duration for which the circuit breaker will wait before trying to recover (from a tripped state).
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FallbackDuration *intstr.IntOrString `json:"fallbackDuration,omitempty" toml:"fallbackDuration,omitempty" yaml:"fallbackDuration,omitempty" export:"true"`
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// RecoveryDuration is the duration for which the circuit breaker will try to recover (as soon as it is in recovering state).
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RecoveryDuration *intstr.IntOrString `json:"recoveryDuration,omitempty" toml:"recoveryDuration,omitempty" yaml:"recoveryDuration,omitempty" export:"true"`
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}
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// +k8s:deepcopy-gen=true
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// Chain holds the configuration of the chain middleware.
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// This middleware enables to define reusable combinations of other pieces of middleware.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/chain/
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type Chain struct {
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// Middlewares is the list of MiddlewareRef which composes the chain.
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Middlewares []MiddlewareRef `json:"middlewares,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// BasicAuth holds the basic auth middleware configuration.
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// This middleware restricts access to your services to known users.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/basicauth/
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type BasicAuth struct {
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// Secret is the name of the referenced Kubernetes Secret containing user credentials.
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Secret string `json:"secret,omitempty"`
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// Realm allows the protected resources on a server to be partitioned into a set of protection spaces, each with its own authentication scheme.
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// Default: traefik.
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Realm string `json:"realm,omitempty"`
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// RemoveHeader sets the removeHeader option to true to remove the authorization header before forwarding the request to your service.
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// Default: false.
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RemoveHeader bool `json:"removeHeader,omitempty"`
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// HeaderField defines a header field to store the authenticated user.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/basicauth/#headerfield
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HeaderField string `json:"headerField,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// DigestAuth holds the digest auth middleware configuration.
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// This middleware restricts access to your services to known users.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/digestauth/
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type DigestAuth struct {
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// Secret is the name of the referenced Kubernetes Secret containing user credentials.
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Secret string `json:"secret,omitempty"`
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// RemoveHeader defines whether to remove the authorization header before forwarding the request to the backend.
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RemoveHeader bool `json:"removeHeader,omitempty"`
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// Realm allows the protected resources on a server to be partitioned into a set of protection spaces, each with its own authentication scheme.
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// Default: traefik.
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Realm string `json:"realm,omitempty"`
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// HeaderField defines a header field to store the authenticated user.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/basicauth/#headerfield
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HeaderField string `json:"headerField,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// ForwardAuth holds the forward auth middleware configuration.
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// This middleware delegates the request authentication to a Service.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/forwardauth/
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type ForwardAuth struct {
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// Address defines the authentication server address.
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Address string `json:"address,omitempty"`
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// TrustForwardHeader defines whether to trust (ie: forward) all X-Forwarded-* headers.
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TrustForwardHeader bool `json:"trustForwardHeader,omitempty"`
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// AuthResponseHeaders defines the list of headers to copy from the authentication server response and set on forwarded request, replacing any existing conflicting headers.
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AuthResponseHeaders []string `json:"authResponseHeaders,omitempty"`
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// AuthResponseHeadersRegex defines the regex to match headers to copy from the authentication server response and set on forwarded request, after stripping all headers that match the regex.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/forwardauth/#authresponseheadersregex
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AuthResponseHeadersRegex string `json:"authResponseHeadersRegex,omitempty"`
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// AuthRequestHeaders defines the list of the headers to copy from the request to the authentication server.
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// If not set or empty then all request headers are passed.
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AuthRequestHeaders []string `json:"authRequestHeaders,omitempty"`
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// TLS defines the configuration used to secure the connection to the authentication server.
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TLS *ClientTLS `json:"tls,omitempty"`
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}
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// ClientTLS holds the client TLS configuration.
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type ClientTLS struct {
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// CASecret is the name of the referenced Kubernetes Secret containing the CA to validate the server certificate.
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// The CA certificate is extracted from key `tls.ca` or `ca.crt`.
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CASecret string `json:"caSecret,omitempty"`
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// CertSecret is the name of the referenced Kubernetes Secret containing the client certificate.
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// The client certificate is extracted from the keys `tls.crt` and `tls.key`.
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CertSecret string `json:"certSecret,omitempty"`
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// InsecureSkipVerify defines whether the server certificates should be validated.
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InsecureSkipVerify bool `json:"insecureSkipVerify,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// RateLimit holds the rate limit configuration.
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// This middleware ensures that services will receive a fair amount of requests, and allows one to define what fair is.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/ratelimit/
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type RateLimit struct {
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// Average is the maximum rate, by default in requests/s, allowed for the given source.
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// It defaults to 0, which means no rate limiting.
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// The rate is actually defined by dividing Average by Period. So for a rate below 1req/s,
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// one needs to define a Period larger than a second.
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Average int64 `json:"average,omitempty"`
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// Period, in combination with Average, defines the actual maximum rate, such as:
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// r = Average / Period. It defaults to a second.
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Period *intstr.IntOrString `json:"period,omitempty"`
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// Burst is the maximum number of requests allowed to arrive in the same arbitrarily small period of time.
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// It defaults to 1.
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Burst *int64 `json:"burst,omitempty"`
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// SourceCriterion defines what criterion is used to group requests as originating from a common source.
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// If several strategies are defined at the same time, an error will be raised.
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// If none are set, the default is to use the request's remote address field (as an ipStrategy).
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SourceCriterion *dynamic.SourceCriterion `json:"sourceCriterion,omitempty"`
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}
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// +k8s:deepcopy-gen=true
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// Retry holds the retry middleware configuration.
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// This middleware reissues requests a given number of times to a backend server if that server does not reply.
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// As soon as the server answers, the middleware stops retrying, regardless of the response status.
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// More info: https://doc.traefik.io/traefik/v3.0/middlewares/http/retry/
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type Retry struct {
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// Attempts defines how many times the request should be retried.
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Attempts int `json:"attempts,omitempty"`
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// InitialInterval defines the first wait time in the exponential backoff series.
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// The maximum interval is calculated as twice the initialInterval.
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// If unspecified, requests will be retried immediately.
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// The value of initialInterval should be provided in seconds or as a valid duration format,
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// see https://pkg.go.dev/time#ParseDuration.
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InitialInterval intstr.IntOrString `json:"initialInterval,omitempty"`
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}
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// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
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// MiddlewareList is a collection of Middleware resources.
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type MiddlewareList struct {
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metav1.TypeMeta `json:",inline"`
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// Standard object's metadata.
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// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
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metav1.ListMeta `json:"metadata"`
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// Items is the list of Middleware.
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Items []Middleware `json:"items"`
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}
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