v1alpha3

package
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 Go to latest Published: Oct 15, 2019 License: Apache-2.0 Imports: 5 Imported by: 0

README

What are these files?

These are Go structs for Istio CRD. We translated them from proto files in https://github.com/istio/api/tree/master/networking/v1alpha3 .

Why do we hand-translate from proto? i.e Why can't we vendor these?

Istio needs to run on many platforms and as a reason they represent their objects internally as proto. On Kubernetes, their API take in JSON objects and convert to proto before processing them.

So they have nothing we can vendor, except for the Go files that are generated by the proto compiler, which is not compatible with K8s API code-generator at all.

We may be able to donate our translation so they can maintain it themselves. See https://github.com/istio/istio/issues/6084.

Documentation

Overview

+k8s:deepcopy-gen=package +groupName=networking.istio.io

Index

Constants

This section is empty.

Variables

View Source 
var (
	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
	AddToScheme   = SchemeBuilder.AddToScheme
)
View Source 
var SchemeGroupVersion = schema.GroupVersion{Group: istio.GroupName, Version: "v1alpha3"}

SchemeGroupVersion is group version used to register these objects

Functions

func Kind 

func Kind(kind string) schema.GroupKind

Kind takes an unqualified kind and returns back a Group qualified GroupKind

func Resource 

func Resource(resource string) schema.GroupResource

Resource takes an unqualified resource and returns a Group qualified GroupResource

Types

type ConnectionPoolSettings 

type ConnectionPoolSettings struct {

	// Settings common to both HTTP and TCP upstream connections.
	TCP *TCPSettings `json:"tcp,omitempty"`

	// HTTP connection pool settings.
	HTTP *HTTPSettings `json:"http,omitempty"`
}

Connection pool settings for an upstream host. The settings apply to each individual host in the upstream service. See Envoy's [circuit breaker](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/circuit_breaking) for more details. Connection pool settings can be applied at the TCP level as well as at HTTP level.

For example, the following rule sets a limit of 100 connections to redis service called myredissrv with a connect timeout of 30ms

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-redis

spec: 

host: myredissrv.prod.svc.cluster.local
trafficPolicy:
  connectionPool:
    tcp:
      maxConnections: 100
      connectTimeout: 30ms

func (*ConnectionPoolSettings) DeepCopy 

func (in *ConnectionPoolSettings) DeepCopy() *ConnectionPoolSettings

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ConnectionPoolSettings.

func (*ConnectionPoolSettings) DeepCopyInto 

func (in *ConnectionPoolSettings) DeepCopyInto(out *ConnectionPoolSettings)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type ConsistentHashLB 

type ConsistentHashLB struct {

	// It is required to specify exactly one of the fields as hash key:
	// HTTPHeaderName, HTTPCookie, or UseSourceIP.
	// Hash based on a specific HTTP header.
	HTTPHeaderName string `json:"httpHeaderName,omitempty"`

	// Hash based on HTTP cookie.
	HTTPCookie *HTTPCookie `json:"httpCookie,omitempty"`

	// Hash based on the source IP address.
	UseSourceIP bool `json:"useSourceIp,omitempty"`

	// The minimum number of virtual nodes to use for the hash
	// ring. Defaults to 1024. Larger ring sizes result in more granular
	// load distributions. If the number of hosts in the load balancing
	// pool is larger than the ring size, each host will be assigned a
	// single virtual node.
	MinimumRingSize uint64 `json:"minimumRingSize,omitempty"`
}

Consistent Hash-based load balancing can be used to provide soft session affinity based on HTTP headers, cookies or other properties. This load balancing policy is applicable only for HTTP connections. The affinity to a particular destination host will be lost when one or more hosts are added/removed from the destination service.

func (*ConsistentHashLB) DeepCopy 

func (in *ConsistentHashLB) DeepCopy() *ConsistentHashLB

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ConsistentHashLB.

func (*ConsistentHashLB) DeepCopyInto 

func (in *ConsistentHashLB) DeepCopyInto(out *ConsistentHashLB)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type CorsPolicy 

type CorsPolicy struct {
	// The list of origins that are allowed to perform CORS requests. The
	// content will be serialized into the Access-Control-Allow-Origin
	// header. Wildcard * will allow all origins.
	AllowOrigin []string `json:"allowOrigin,omitempty"`

	// List of HTTP methods allowed to access the resource. The content will
	// be serialized into the Access-Control-Allow-Methods header.
	AllowMethods []string `json:"allowMethods,omitempty"`

	// List of HTTP headers that can be used when requesting the
	// resource. Serialized to Access-Control-Allow-Methods header.
	AllowHeaders []string `json:"allowHeaders,omitempty"`

	// A white list of HTTP headers that the browsers are allowed to
	// access. Serialized into Access-Control-Expose-Headers header.
	ExposeHeaders []string `json:"exposeHeaders,omitempty"`

	// Specifies how long the results of a preflight request can be
	// cached. Translates to the Access-Control-Max-Age header.
	MaxAge string `json:"maxAge,omitempty"`

	// Indicates whether the caller is allowed to send the actual request
	// (not the preflight) using credentials. Translates to
	// Access-Control-Allow-Credentials header.
	AllowCredentials bool `json:"allowCredentials,omitempty"`
}

Describes the Cross-Origin Resource Sharing (CORS) policy, for a given service. Refer to https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS for further details about cross origin resource sharing. For example, the following rule restricts cross origin requests to those originating from example.com domain using HTTP POST/GET, and sets the Access-Control-Allow-Credentials header to false. In addition, it only exposes X-Foo-bar header and sets an expiry period of 1 day. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - route:
    - destination:
        host: ratings
        subset: v1
    corsPolicy:
      allowOrigin:
      - example.com
      allowMethods:
      - POST
      - GET
      allowCredentials: false
      allowHeaders:
      - X-Foo-Bar
      maxAge: "1d"

func (*CorsPolicy) DeepCopy 

func (in *CorsPolicy) DeepCopy() *CorsPolicy

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CorsPolicy.

func (*CorsPolicy) DeepCopyInto 

func (in *CorsPolicy) DeepCopyInto(out *CorsPolicy)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Destination 

type Destination struct {
	// REQUIRED. The name of a service from the service registry. Service
	// names are looked up from the platform's service registry (e.g.,
	// Kubernetes services, Consul services, etc.) and from the hosts
	// declared by [ServiceEntry](#ServiceEntry). Traffic forwarded to
	// destinations that are not found in either of the two, will be dropped.
	//
	// *Note for Kubernetes users*: When short names are used (e.g. "reviews"
	// instead of "reviews.default.svc.cluster.local"), Istio will interpret
	// the short name based on the namespace of the rule, not the service. A
	// rule in the "default" namespace containing a host "reviews will be
	// interpreted as "reviews.default.svc.cluster.local", irrespective of
	// the actual namespace associated with the reviews service. _To avoid
	// potential misconfigurations, it is recommended to always use fully
	// qualified domain names over short names._
	Host string `json:"host"`

	// The name of a subset within the service. Applicable only to services
	// within the mesh. The subset must be defined in a corresponding
	// DestinationRule.
	Subset string `json:"subset,omitempty"`

	// Specifies the port on the host that is being addressed. If a service
	// exposes only a single port it is not required to explicitly select the
	// port.
	Port PortSelector `json:"port,omitempty"`
}

Destination indicates the network addressable service to which the request/connection will be sent after processing a routing rule. The destination.name should unambiguously refer to a service in the service registry. It can be a short name or a fully qualified domain name from the service registry, a resolvable DNS name, an IP address or a service name from the service registry and a subset name. The order of inference is as follows:

1. Service registry lookup. The entire name is looked up in the service registry. If the lookup succeeds, the search terminates. The requests will be routed to any instance of the service in the mesh. When the service name consists of a single word, the FQDN will be constructed in a platform specific manner. For example, in Kubernetes, the namespace associated with the routing rule will be used to identify the service as <servicename>.<rulenamespace>. However, if the service name contains multiple words separated by a dot (e.g., reviews.prod), the name in its entirety would be looked up in the service registry.

2. Runtime DNS lookup by the proxy. If step 1 fails, and the name is not an IP address, it will be considered as a DNS name that is not in the service registry (e.g., wikipedia.org). The sidecar/gateway will resolve the DNS and load balance requests appropriately. See Envoy's strict_dns for details.

The following example routes all traffic by default to pods of the reviews service with label "version: v1" (i.e., subset v1), and some to subset v2, in a kubernetes environment. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: reviews-route
spec:
  hosts:
  - reviews # namespace is same as the client/caller's namespace
  http:
  - match:
    - uri:
        prefix: "/wpcatalog"
    - uri:
        prefix: "/consumercatalog"
    rewrite:
      uri: "/newcatalog"
    route:
    - destination:
        host: reviews
        subset: v2
  - route:
    - destination:
        host: reviews
        subset: v1

And the associated DestinationRule 

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: reviews-destination
spec:
  host: reviews
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2

The following VirtualService sets a timeout of 5s for all calls to productpage.prod service. Notice that there are no subsets defined in this rule. Istio will fetch all instances of productpage.prod service from the service registry and populate the sidecar's load balancing pool. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-productpage-rule
spec:
  hosts:
  - productpage.prod # in kubernetes, this applies only to prod namespace
  http:
  - timeout: 5s
    route:
    - destination:
        host: productpage.prod

The following sets a timeout of 5s for all calls to the external service wikipedia.org, as there is no internal service of that name. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-wiki-rule
spec:
  hosts:
  - wikipedia.org
  http:
  - timeout: 5s
    route:
    - destination:
        host: wikipedia.org

func (*Destination) DeepCopy 

func (in *Destination) DeepCopy() *Destination

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Destination.

func (*Destination) DeepCopyInto 

func (in *Destination) DeepCopyInto(out *Destination)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type DestinationRule 

type DestinationRule struct {
	metav1.TypeMeta   `json:",inline"`
	metav1.ObjectMeta `json:"metadata,omitempty"`
	Spec              DestinationRuleSpec `json:"spec"`
}

+genclient +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object DestinationRule

func (*DestinationRule) DeepCopy 

func (in *DestinationRule) DeepCopy() *DestinationRule

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DestinationRule.

func (*DestinationRule) DeepCopyInto 

func (in *DestinationRule) DeepCopyInto(out *DestinationRule)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*DestinationRule) DeepCopyObject 

func (in *DestinationRule) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type DestinationRuleList 

type DestinationRuleList struct {
	metav1.TypeMeta `json:",inline"`
	metav1.ListMeta `json:"metadata"`
	Items           []DestinationRule `json:"items"`
}

+k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object DestinationRuleList is a list of DestinationRule resources

func (*DestinationRuleList) DeepCopy 

func (in *DestinationRuleList) DeepCopy() *DestinationRuleList

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DestinationRuleList.

func (*DestinationRuleList) DeepCopyInto 

func (in *DestinationRuleList) DeepCopyInto(out *DestinationRuleList)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*DestinationRuleList) DeepCopyObject 

func (in *DestinationRuleList) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type DestinationRuleSpec 

type DestinationRuleSpec struct {
	// REQUIRED. The name of a service from the service registry. Service
	// names are looked up from the platform's service registry (e.g.,
	// Kubernetes services, Consul services, etc.) and from the hosts
	// declared by [ServiceEntries](#ServiceEntry). Rules defined for
	// services that do not exist in the service registry will be ignored.
	//
	// *Note for Kubernetes users*: When short names are used (e.g. "reviews"
	// instead of "reviews.default.svc.cluster.local"), Istio will interpret
	// the short name based on the namespace of the rule, not the service. A
	// rule in the "default" namespace containing a host "reviews will be
	// interpreted as "reviews.default.svc.cluster.local", irrespective of
	// the actual namespace associated with the reviews service. _To avoid
	// potential misconfigurations, it is recommended to always use fully
	// qualified domain names over short names._
	//
	// Note that the host field applies to both HTTP and TCP services.
	Host string `json:"host"`

	// Traffic policies to apply (load balancing policy, connection pool
	// sizes, outlier detection).
	TrafficPolicy *TrafficPolicy `json:"trafficPolicy,omitempty"`

	// One or more named sets that represent individual versions of a
	// service. Traffic policies can be overridden at subset level.
	Subsets []Subset `json:"subsets,omitempty"`

	// A list of namespaces to which this destination rule is exported.
	// The resolution of a destination rule to apply to a service occurs in the
	// context of a hierarchy of namespaces. Exporting a destination rule allows
	// it to be included in the resolution hierarchy for services in
	// other namespaces. This feature provides a mechanism for service owners
	// and mesh administrators to control the visibility of destination rules
	// across namespace boundaries.
	//
	// If no namespaces are specified then the destination rule is exported to all
	// namespaces by default.
	//
	// The value "." is reserved and defines an export to the same namespace that
	// the destination rule is declared in. Similarly, the value "*" is reserved and
	// defines an export to all namespaces.
	//
	// NOTE: in the current release, the `exportTo` value is restricted to
	// "." or "*" (i.e., the current namespace or all namespaces).
	ExportTo []string `json:"exportTo,omitempty"`
}

DestinationRule defines policies that apply to traffic intended for a service after routing has occurred. These rules specify configuration for load balancing, connection pool size from the sidecar, and outlier detection settings to detect and evict unhealthy hosts from the load balancing pool. For example, a simple load balancing policy for the ratings service would look as follows:

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-ratings

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy:
  loadBalancer:
    simple: LEAST_CONN

Version specific policies can be specified by defining a named subset and overriding the settings specified at the service level. The following rule uses a round robin load balancing policy for all traffic going to a subset named testversion that is composed of endpoints (e.g., pods) with labels (version:v3).

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-ratings

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy:
  loadBalancer:
    simple: LEAST_CONN
subsets:
- name: testversion
  labels:
    version: v3
  trafficPolicy:
    loadBalancer:
      simple: ROUND_ROBIN

**Note:** Policies specified for subsets will not take effect until a route rule explicitly sends traffic to this subset.

Traffic policies can be customized to specific ports as well. The following rule uses the least connection load balancing policy for all traffic to port 80, while uses a round robin load balancing setting for traffic to the port 9080.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-ratings-port

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy: # Apply to all ports
  portLevelSettings:
  - port:
      number: 80
    loadBalancer:
      simple: LEAST_CONN
  - port:
      number: 9080
    loadBalancer:
      simple: ROUND_ROBIN

func (*DestinationRuleSpec) DeepCopy 

func (in *DestinationRuleSpec) DeepCopy() *DestinationRuleSpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DestinationRuleSpec.

func (*DestinationRuleSpec) DeepCopyInto 

func (in *DestinationRuleSpec) DeepCopyInto(out *DestinationRuleSpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Gateway 

type Gateway struct {
	metav1.TypeMeta   `json:",inline"`
	metav1.ObjectMeta `json:"metadata,omitempty"`

	Spec GatewaySpec `json:"spec"`
}

Gateway describes a load balancer operating at the edge of the mesh receiving incoming or outgoing HTTP/TCP connections. The specification describes a set of ports that should be exposed, the type of protocol to use, SNI configuration for the load balancer, etc.

For example, the following gateway spec sets up a proxy to act as a load balancer exposing port 80 and 9080 (http), 443 (https), and port 2379 (TCP) for ingress. The gateway will be applied to the proxy running on a pod with labels "app: my-gateway-controller". While Istio will configure the proxy to listen on these ports, it is the responsibility of the user to ensure that external traffic to these ports are allowed into the mesh. 

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: my-gateway
spec:
  selector:
    app: my-gatweway-controller
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - uk.bookinfo.com
    - eu.bookinfo.com
    tls:
      httpsRedirect: true # sends 302 redirect for http requests
  - port:
      number: 443
      name: https
      protocol: HTTPS
    hosts:
    - uk.bookinfo.com
    - eu.bookinfo.com
    tls:
      mode: SIMPLE #enables HTTPS on this port
      serverCertificate: /etc/certs/servercert.pem
      privateKey: /etc/certs/privatekey.pem
  - port:
      number: 9080
      name: http-wildcard
      protocol: HTTP
    # no hosts implies wildcard match
  - port:
      number: 2379 #to expose internal service via external port 2379
      name: mongo
      protocol: MONGO

The gateway specification above describes the L4-L6 properties of a load balancer. A VirtualService can then be bound to a gateway to control the forwarding of traffic arriving at a particular host or gateway port.

For example, the following VirtualService splits traffic for https://uk.bookinfo.com/reviews, https://eu.bookinfo.com/reviews, http://uk.bookinfo.com:9080/reviews, http://eu.bookinfo.com:9080/reviews into two versions (prod and qa) of an internal reviews service on port 9080. In addition, requests containing the cookie user: dev-123 will be sent to special port 7777 in the qa version. The same rule is also applicable inside the mesh for requests to the reviews.prod service. This rule is applicable across ports 443, 9080. Note that http://uk.bookinfo.com gets redirected to https://uk.bookinfo.com (i.e. 80 redirects to 443). 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: bookinfo-rule
spec:
  hosts:
  - reviews.prod
  - uk.bookinfo.com
  - eu.bookinfo.com
  gateways:
  - my-gateway
  - mesh # applies to all the sidecars in the mesh
  http:
  - match:
    - headers:
        cookie:
          user: dev-123
    route:
    - destination:
        port:
          number: 7777
        name: reviews.qa
  - match:
      uri:
        prefix: /reviews/
    route:
    - destination:
        port:
          number: 9080 # can be omitted if its the only port for reviews
        name: reviews.prod
      weight: 80
    - destination:
        name: reviews.qa
      weight: 20

The following VirtualService forwards traffic arriving at (external) port 2379 from 172.17.16.0/24 subnet to internal Mongo server on port 5555. This rule is not applicable internally in the mesh as the gateway list omits the reserved name "mesh". 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: bookinfo-Mongo
spec:
  hosts:
  - mongosvr #name of Mongo service
  gateways:
  - my-gateway
  tcp:
  - match:
    - port:
        number: 2379
      sourceSubnet: "172.17.16.0/24"
    route:
    - destination:
        name: mongo.prod

func (*Gateway) DeepCopy 

func (in *Gateway) DeepCopy() *Gateway

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Gateway.

func (*Gateway) DeepCopyInto 

func (in *Gateway) DeepCopyInto(out *Gateway)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*Gateway) DeepCopyObject 

func (in *Gateway) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type GatewayList 

type GatewayList struct {
	metav1.TypeMeta `json:",inline"`
	metav1.ListMeta `json:"metadata"`

	Items []Gateway `json:"items"`
}

GatewayList is a list of Gateway resources

func (*GatewayList) DeepCopy 

func (in *GatewayList) DeepCopy() *GatewayList

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GatewayList.

func (*GatewayList) DeepCopyInto 

func (in *GatewayList) DeepCopyInto(out *GatewayList)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*GatewayList) DeepCopyObject 

func (in *GatewayList) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type GatewaySpec 

type GatewaySpec struct {
	// REQUIRED: A list of server specifications.
	Servers []Server `json:"servers"`

	// One or more labels that indicate a specific set of pods/VMs
	// on which this gateway configuration should be applied.
	// If no selectors are provided, the gateway will be implemented by
	// the default istio-ingress controller.
	Selector map[string]string `json:"selector,omitempty"`
}

func (*GatewaySpec) DeepCopy 

func (in *GatewaySpec) DeepCopy() *GatewaySpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GatewaySpec.

func (*GatewaySpec) DeepCopyInto 

func (in *GatewaySpec) DeepCopyInto(out *GatewaySpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPCookie 

type HTTPCookie struct {
	// REQUIRED. Name of the cookie.
	Name string `json:"name"`

	// Path to set for the cookie.
	Path string `json:"path,omitempty"`

	// REQUIRED. Lifetime of the cookie.
	TTL string `json:"ttl"`
}

Describes a HTTP cookie that will be used as the hash key for the Consistent Hash load balancer. If the cookie is not present, it will be generated.

func (*HTTPCookie) DeepCopy 

func (in *HTTPCookie) DeepCopy() *HTTPCookie

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPCookie.

func (*HTTPCookie) DeepCopyInto 

func (in *HTTPCookie) DeepCopyInto(out *HTTPCookie)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPFaultInjection 

type HTTPFaultInjection struct {
	// Delay requests before forwarding, emulating various failures such as
	// network issues, overloaded upstream service, etc.
	Delay *InjectDelay `json:"delay,omitempty"`

	// Abort Http request attempts and return error codes back to downstream
	// service, giving the impression that the upstream service is faulty.
	Abort *InjectAbort `json:"abort,omitempty"`
}

HTTPFaultInjection can be used to specify one or more faults to inject while forwarding http requests to the destination specified in a route. Fault specification is part of a VirtualService rule. Faults include aborting the Http request from downstream service, and/or delaying proxying of requests. A fault rule MUST HAVE delay or abort or both.

*Note:* Delay and abort faults are independent of one another, even if both are specified simultaneously.

func (*HTTPFaultInjection) DeepCopy 

func (in *HTTPFaultInjection) DeepCopy() *HTTPFaultInjection

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPFaultInjection.

func (*HTTPFaultInjection) DeepCopyInto 

func (in *HTTPFaultInjection) DeepCopyInto(out *HTTPFaultInjection)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPMatchRequest 

type HTTPMatchRequest struct {
	// URI to match
	// values are case-sensitive and formatted as follows:
	//
	// - `exact: "value"` for exact string match
	//
	// - `prefix: "value"` for prefix-based match
	//
	// - `regex: "value"` for ECMAscript style regex-based match
	//
	URI *v1alpha1.StringMatch `json:"uri,omitempty"`

	// URI Scheme
	// values are case-sensitive and formatted as follows:
	//
	// - `exact: "value"` for exact string match
	//
	// - `prefix: "value"` for prefix-based match
	//
	// - `regex: "value"` for ECMAscript style regex-based match
	//
	Scheme *v1alpha1.StringMatch `json:"scheme,omitempty"`

	// HTTP Method
	// values are case-sensitive and formatted as follows:
	//
	// - `exact: "value"` for exact string match
	//
	// - `prefix: "value"` for prefix-based match
	//
	// - `regex: "value"` for ECMAscript style regex-based match
	//
	Method *v1alpha1.StringMatch `json:"method,omitempty"`

	// HTTP Authority
	// values are case-sensitive and formatted as follows:
	//
	// - `exact: "value"` for exact string match
	//
	// - `prefix: "value"` for prefix-based match
	//
	// - `regex: "value"` for ECMAscript style regex-based match
	//
	Authority *v1alpha1.StringMatch `json:"authority,omitempty"`

	// The header keys must be lowercase and use hyphen as the separator,
	// e.g. _x-request-id_.
	//
	// Header values are case-sensitive and formatted as follows:
	//
	// - `exact: "value"` for exact string match
	//
	// - `prefix: "value"` for prefix-based match
	//
	// - `regex: "value"` for ECMAscript style regex-based match
	//
	// **Note:** The keys `uri`, `scheme`, `method`, and `authority` will be ignored.
	Headers map[string]v1alpha1.StringMatch `json:"headers,omitempty"`

	// Specifies the ports on the host that is being addressed. Many services
	// only expose a single port or label ports with the protocols they support,
	// in these cases it is not required to explicitly select the port.
	Port uint32 `json:"port,omitempty"`

	// One or more labels that constrain the applicability of a rule to
	// workloads with the given labels. If the VirtualService has a list of
	// gateways specified at the top, it should include the reserved gateway
	// `mesh` in order for this field to be applicable.
	SourceLabels map[string]string `json:"sourceLabels,omitempty"`

	// Names of gateways where the rule should be applied to. Gateway names
	// at the top of the VirtualService (if any) are overridden. The gateway match is
	// independent of sourceLabels.
	Gateways []string `json:"gateways,omitempty"`
}

HttpMatchRequest specifies a set of criterion to be met in order for the rule to be applied to the HTTP request. For example, the following restricts the rule to match only requests where the URL path starts with /ratings/v2/ and the request contains a "cookie" with value "user=jason". 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - match:
    - headers:
        cookie:
          regex: "^(.*?;)?(user=jason)(;.*)?"
        uri:
          prefix: "/ratings/v2/"
    route:
    - destination:
        host: ratings

HTTPMatchRequest CANNOT be empty.

func (*HTTPMatchRequest) DeepCopy 

func (in *HTTPMatchRequest) DeepCopy() *HTTPMatchRequest

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPMatchRequest.

func (*HTTPMatchRequest) DeepCopyInto 

func (in *HTTPMatchRequest) DeepCopyInto(out *HTTPMatchRequest)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPRedirect 

type HTTPRedirect struct {
	// On a redirect, overwrite the Path portion of the URL with this
	// value. Note that the entire path will be replaced, irrespective of the
	// request URI being matched as an exact path or prefix.
	URI string `json:"uri,omitempty"`

	// On a redirect, overwrite the Authority/Host portion of the URL with
	// this value.
	Authority string `json:"authority,omitempty"`
}

HTTPRedirect can be used to send a 302 redirect response to the caller, where the Authority/Host and the URI in the response can be swapped with the specified values. For example, the following rule redirects requests for /v1/getProductRatings API on the ratings service to /v1/bookRatings provided by the bookratings service. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - match:
    - uri:
        exact: /v1/getProductRatings
  redirect:
    uri: /v1/bookRatings
    authority: bookratings.default.svc.cluster.local
  ...

func (*HTTPRedirect) DeepCopy 

func (in *HTTPRedirect) DeepCopy() *HTTPRedirect

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPRedirect.

func (*HTTPRedirect) DeepCopyInto 

func (in *HTTPRedirect) DeepCopyInto(out *HTTPRedirect)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPRetry 

type HTTPRetry struct {
	// REQUIRED. Number of retries for a given request. The interval
	// between retries will be determined automatically (25ms+). Actual
	// number of retries attempted depends on the httpReqTimeout.
	Attempts int `json:"attempts"`

	// Timeout per retry attempt for a given request. format: 1h/1m/1s/1ms. MUST BE >=1ms.
	PerTryTimeout string `json:"perTryTimeout"`
}

Describes the retry policy to use when a HTTP request fails. For example, the following rule sets the maximum number of retries to 3 when calling ratings:v1 service, with a 2s timeout per retry attempt. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - route:
    - destination:
        host: ratings
        subset: v1
    retries:
      attempts: 3
      perTryTimeout: 2s

func (*HTTPRetry) DeepCopy 

func (in *HTTPRetry) DeepCopy() *HTTPRetry

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPRetry.

func (*HTTPRetry) DeepCopyInto 

func (in *HTTPRetry) DeepCopyInto(out *HTTPRetry)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPRewrite 

type HTTPRewrite struct {
	// rewrite the path (or the prefix) portion of the URI with this
	// value. If the original URI was matched based on prefix, the value
	// provided in this field will replace the corresponding matched prefix.
	URI string `json:"uri,omitempty"`

	// rewrite the Authority/Host header with this value.
	Authority string `json:"authority,omitempty"`
}

HTTPRewrite can be used to rewrite specific parts of a HTTP request before forwarding the request to the destination. Rewrite primitive can be used only with the HTTPRouteDestinations. The following example demonstrates how to rewrite the URL prefix for api call (/ratings) to ratings service before making the actual API call. 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - match:
    - uri:
        prefix: /ratings
    rewrite:
      uri: /v1/bookRatings
    route:
    - destination:
        host: ratings
        subset: v1

func (*HTTPRewrite) DeepCopy 

func (in *HTTPRewrite) DeepCopy() *HTTPRewrite

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPRewrite.

func (*HTTPRewrite) DeepCopyInto 

func (in *HTTPRewrite) DeepCopyInto(out *HTTPRewrite)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPRoute 

type HTTPRoute struct {
	// Match conditions to be satisfied for the rule to be
	// activated. All conditions inside a single match block have AND
	// semantics, while the list of match blocks have OR semantics. The rule
	// is matched if any one of the match blocks succeed.
	Match []HTTPMatchRequest `json:"match,omitempty"`

	// A http rule can either redirect or forward (default) traffic. The
	// forwarding target can be one of several versions of a service (see
	// glossary in beginning of document). Weights associated with the
	// service version determine the proportion of traffic it receives.
	Route []HTTPRouteDestination `json:"route,omitempty"`

	// A http rule can either redirect or forward (default) traffic. If
	// traffic passthrough option is specified in the rule,
	// route/redirect will be ignored. The redirect primitive can be used to
	// send a HTTP 302 redirect to a different URI or Authority.
	Redirect *HTTPRedirect `json:"redirect,omitempty"`

	// Rewrite HTTP URIs and Authority headers. Rewrite cannot be used with
	// Redirect primitive. Rewrite will be performed before forwarding.
	Rewrite *HTTPRewrite `json:"rewrite,omitempty"`

	// Indicates that a HTTP/1.1 client connection to this particular route
	// should be allowed (and expected) to upgrade to a WebSocket connection.
	// The default is false. Istio's reference sidecar implementation (Envoy)
	// expects the first request to this route to contain the WebSocket
	// upgrade headers. Otherwise, the request will be rejected. Note that
	// Websocket allows secondary protocol negotiation which may then be
	// subject to further routing rules based on the protocol selected.
	WebsocketUpgrade bool `json:"websocketUpgrade,omitempty"`

	// Timeout for HTTP requests.
	Timeout string `json:"timeout,omitempty"`

	// Retry policy for HTTP requests.
	Retries *HTTPRetry `json:"retries,omitempty"`

	// Fault injection policy to apply on HTTP traffic.
	Fault *HTTPFaultInjection `json:"fault,omitempty"`

	// Mirror HTTP traffic to a another destination in addition to forwarding
	// the requests to the intended destination. Mirrored traffic is on a
	// best effort basis where the sidecar/gateway will not wait for the
	// mirrored cluster to respond before returning the response from the
	// original destination.  Statistics will be generated for the mirrored
	// destination.
	Mirror *Destination `json:"mirror,omitempty"`

	// Additional HTTP headers to add before forwarding a request to the
	// destination service.
	DeprecatedAppendHeaders map[string]string `json:"appendHeaders,omitempty"`

	// Header manipulation rules
	Headers *Headers `json:"headers,omitempty"`

	// Http headers to remove before returning the response to the caller
	RemoveResponseHeaders map[string]string `json:"removeResponseHeaders,omitempty"`

	// Cross-Origin Resource Sharing policy
	CorsPolicy *CorsPolicy `json:"corsPolicy,omitempty"`
}

Describes match conditions and actions for routing HTTP/1.1, HTTP2, and gRPC traffic. See VirtualService for usage examples.

func (*HTTPRoute) DeepCopy 

func (in *HTTPRoute) DeepCopy() *HTTPRoute

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPRoute.

func (*HTTPRoute) DeepCopyInto 

func (in *HTTPRoute) DeepCopyInto(out *HTTPRoute)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPRouteDestination 

type HTTPRouteDestination struct {
	// REQUIRED. Destination uniquely identifies the instances of a service
	// to which the request/connection should be forwarded to.
	Destination Destination `json:"destination"`

	// REQUIRED. The proportion of traffic to be forwarded to the service
	// version. (0-100). Sum of weights across destinations SHOULD BE == 100.
	// If there is only destination in a rule, the weight value is assumed to
	// be 100.
	Weight int `json:"weight"`

	// Header manipulation rules
	Headers *Headers `json:"headers,omitempty"`
}

func (*HTTPRouteDestination) DeepCopy 

func (in *HTTPRouteDestination) DeepCopy() *HTTPRouteDestination

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPRouteDestination.

func (*HTTPRouteDestination) DeepCopyInto 

func (in *HTTPRouteDestination) DeepCopyInto(out *HTTPRouteDestination)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HTTPSettings 

type HTTPSettings struct {
	// Maximum number of pending HTTP requests to a destination. Default 1024.
	HTTP1MaxPendingRequests int32 `json:"http1MaxPendingRequests,omitempty"`

	// Maximum number of requests to a backend. Default 1024.
	HTTP2MaxRequests int32 `json:"http2MaxRequests,omitempty"`

	// Maximum number of requests per connection to a backend. Setting this
	// parameter to 1 disables keep alive.
	MaxRequestsPerConnection int32 `json:"maxRequestsPerConnection,omitempty"`

	// Maximum number of retries that can be outstanding to all hosts in a
	// cluster at a given time. Defaults to 3.
	MaxRetries int32 `json:"maxRetries,omitempty"`
}

Settings applicable to HTTP1.1/HTTP2/GRPC connections.

func (*HTTPSettings) DeepCopy 

func (in *HTTPSettings) DeepCopy() *HTTPSettings

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HTTPSettings.

func (*HTTPSettings) DeepCopyInto 

func (in *HTTPSettings) DeepCopyInto(out *HTTPSettings)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type HeaderOperations 

type HeaderOperations struct {
	// Overwrite the headers specified by key with the given values
	Set map[string]string `json:"set,omitempty"`

	// Append the given values to the headers specified by keys
	// (will create a comma-separated list of values)
	Add map[string]string `json:"add,omitempty"`

	// Remove a the specified headers
	Remove []string `json:"remove,omitempty"`
}

HeaderOperations Describes the header manipulations to apply

func (*HeaderOperations) DeepCopy 

func (in *HeaderOperations) DeepCopy() *HeaderOperations

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HeaderOperations.

func (*HeaderOperations) DeepCopyInto 

func (in *HeaderOperations) DeepCopyInto(out *HeaderOperations)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Headers 

type Headers struct {
	// Header manipulation rules to apply before forwarding a request
	// to the destination service
	Request *HeaderOperations `json:"request,omitempty"`

	// Header manipulation rules to apply before returning a response
	// to the caller
	Response *HeaderOperations `json:"response,omitempty"`
}

Headers describes header manipulation rules.

func (*Headers) DeepCopy 

func (in *Headers) DeepCopy() *Headers

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Headers.

func (*Headers) DeepCopyInto 

func (in *Headers) DeepCopyInto(out *Headers)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type InjectAbort 

type InjectAbort struct {
	// Percentage of requests to be aborted with the error code provided (0-100).
	Percent int `json:"percent,omitempty"`

	// REQUIRED. HTTP status code to use to abort the Http request.
	HTTPStatus int `json:"httpStatus"`
}

Abort specification is used to prematurely abort a request with a pre-specified error code. The following example will return an HTTP 400 error code for 10% of the requests to the "ratings" service "v1". 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings-route
spec:
  hosts:
  - ratings
  http:
  - route:
    - destination:
        host: ratings
        subset: v1
    fault:
      abort:
        percent: 10
        httpStatus: 400

The _httpStatus_ field is used to indicate the HTTP status code to return to the caller. The optional _percent_ field, a value between 0 and 100, is used to only abort a certain percentage of requests. If not specified, all requests are aborted.

func (*InjectAbort) DeepCopy 

func (in *InjectAbort) DeepCopy() *InjectAbort

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new InjectAbort.

func (*InjectAbort) DeepCopyInto 

func (in *InjectAbort) DeepCopyInto(out *InjectAbort)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type InjectDelay 

type InjectDelay struct {
	// Percentage of requests on which the delay will be injected (0-100).
	Percent int `json:"percent,omitempty"`

	// REQUIRED. Add a fixed delay before forwarding the request. Format:
	// 1h/1m/1s/1ms. MUST be >=1ms.
	FixedDelay string `json:"fixedDelay"`

	// (-- Add a delay (based on an exponential function) before forwarding
	// the request. mean delay needed to derive the exponential delay
	// values --)
	ExponentialDelay string `json:"exponentialDelay,omitempty"`
}

Delay specification is used to inject latency into the request forwarding path. The following example will introduce a 5 second delay in 10% of the requests to the "v1" version of the "reviews" service from all pods with label env: prod 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: reviews-route
spec:
  hosts:
  - reviews
  http:
  - match:
    - sourceLabels:
        env: prod
    route:
    - destination:
        host: reviews
        subset: v1
    fault:
      delay:
        percent: 10
        fixedDelay: 5s

The _fixedDelay_ field is used to indicate the amount of delay in seconds. An optional _percent_ field, a value between 0 and 100, can be used to only delay a certain percentage of requests. If left unspecified, all request will be delayed.

func (*InjectDelay) DeepCopy 

func (in *InjectDelay) DeepCopy() *InjectDelay

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new InjectDelay.

func (*InjectDelay) DeepCopyInto 

func (in *InjectDelay) DeepCopyInto(out *InjectDelay)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type L4MatchAttributes 

type L4MatchAttributes struct {
	// IPv4 or IPv6 ip address of destination with optional subnet.  E.g.,
	// a.b.c.d/xx form or just a.b.c.d.
	DestinationSubnets []string `json:"destinationSubnets,omitempty"`

	// Specifies the port on the host that is being addressed. Many services
	// only expose a single port or label ports with the protocols they support,
	// in these cases it is not required to explicitly select the port.
	Port int `json:"port,omitempty"`

	// One or more labels that constrain the applicability of a rule to
	// workloads with the given labels. If the VirtualService has a list of
	// gateways specified at the top, it should include the reserved gateway
	// `mesh` in order for this field to be applicable.
	SourceLabels map[string]string `json:"sourceLabels,omitempty"`

	// Names of gateways where the rule should be applied to. Gateway names
	// at the top of the VirtualService (if any) are overridden. The gateway match is
	// independent of sourceLabels.
	Gateways []string `json:"gateways,omitempty"`
}

L4 connection match attributes. Note that L4 connection matching support is incomplete.

func (*L4MatchAttributes) DeepCopy 

func (in *L4MatchAttributes) DeepCopy() *L4MatchAttributes

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new L4MatchAttributes.

func (*L4MatchAttributes) DeepCopyInto 

func (in *L4MatchAttributes) DeepCopyInto(out *L4MatchAttributes)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type LoadBalancerSettings 

type LoadBalancerSettings struct {
	// It is required to specify exactly one of the fields:
	// Simple or ConsistentHash
	Simple         SimpleLB          `json:"simple,omitempty"`
	ConsistentHash *ConsistentHashLB `json:"consistentHash,omitempty"`
}

Load balancing policies to apply for a specific destination. See Envoy's load balancing [documentation](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/load_balancing.html) for more details.

For example, the following rule uses a round robin load balancing policy for all traffic going to the ratings service.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-ratings

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy:
  loadBalancer:
    simple: ROUND_ROBIN

The following example sets up sticky sessions for the ratings service hashing-based load balancer for the same ratings service using the the User cookie as the hash key. 

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: bookinfo-ratings
spec:
  host: ratings.prod.svc.cluster.local
  trafficPolicy:
    loadBalancer:
      consistentHash:
        httpCookie:
          name: user
          ttl: 0s

func (*LoadBalancerSettings) DeepCopy 

func (in *LoadBalancerSettings) DeepCopy() *LoadBalancerSettings

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new LoadBalancerSettings.

func (*LoadBalancerSettings) DeepCopyInto 

func (in *LoadBalancerSettings) DeepCopyInto(out *LoadBalancerSettings)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type OutlierDetection 

type OutlierDetection struct {
	// Number of errors before a host is ejected from the connection
	// pool. Defaults to 5. When the upstream host is accessed over HTTP, a
	// 5xx return code qualifies as an error. When the upstream host is
	// accessed over an opaque TCP connection, connect timeouts and
	// connection error/failure events qualify as an error.
	ConsecutiveErrors int32 `json:"consecutiveErrors,omitempty"`

	// Time interval between ejection sweep analysis. format:
	// 1h/1m/1s/1ms. MUST BE >=1ms. Default is 10s.
	Interval string `json:"interval,omitempty"`

	// Minimum ejection duration. A host will remain ejected for a period
	// equal to the product of minimum ejection duration and the number of
	// times the host has been ejected. This technique allows the system to
	// automatically increase the ejection period for unhealthy upstream
	// servers. format: 1h/1m/1s/1ms. MUST BE >=1ms. Default is 30s.
	BaseEjectionTime string `json:"baseEjectionTime,omitempty"`

	// Maximum % of hosts in the load balancing pool for the upstream
	// service that can be ejected. Defaults to 10%.
	MaxEjectionPercent int32 `json:"maxEjectionPercent,omitempty"`
}

A Circuit breaker implementation that tracks the status of each individual host in the upstream service. Applicable to both HTTP and TCP services. For HTTP services, hosts that continually return 5xx errors for API calls are ejected from the pool for a pre-defined period of time. For TCP services, connection timeouts or connection failures to a given host counts as an error when measuring the consecutive errors metric. See Envoy's [outlier detection](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/outlier) for more details.

The following rule sets a connection pool size of 100 connections and 1000 concurrent HTTP2 requests, with no more than 10 req/connection to "reviews" service. In addition, it configures upstream hosts to be scanned every 5 mins, such that any host that fails 7 consecutive times with 5XX error code will be ejected for 15 minutes.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: reviews-cb-policy

spec: 

host: reviews.prod.svc.cluster.local
trafficPolicy:
  connectionPool:
    tcp:
      maxConnections: 100
    http:
      http2MaxRequests: 1000
      maxRequestsPerConnection: 10
  outlierDetection:
    consecutiveErrors: 7
    interval: 5m
    baseEjectionTime: 15m

func (*OutlierDetection) DeepCopy 

func (in *OutlierDetection) DeepCopy() *OutlierDetection

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new OutlierDetection.

func (*OutlierDetection) DeepCopyInto 

func (in *OutlierDetection) DeepCopyInto(out *OutlierDetection)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Port 

type Port struct {
	// REQUIRED: A valid non-negative integer port number.
	Number int `json:"number"`

	// REQUIRED: The protocol exposed on the port.
	// MUST BE one of HTTP|HTTPS|GRPC|HTTP2|MONGO|TCP.
	Protocol PortProtocol `json:"protocol"`

	// Label assigned to the port.
	Name string `json:"name,omitempty"`
}

Port describes the properties of a specific port of a service.

func (*Port) DeepCopy 

func (in *Port) DeepCopy() *Port

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Port.

func (*Port) DeepCopyInto 

func (in *Port) DeepCopyInto(out *Port)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type PortProtocol 

type PortProtocol string
const (
	ProtocolHTTP  PortProtocol = "HTTP"
	ProtocolHTTPS PortProtocol = "HTTPS"
	ProtocolGRPC  PortProtocol = "GRPC"
	ProtocolHTTP2 PortProtocol = "HTTP2"
	ProtocolMongo PortProtocol = "Mongo"
	ProtocolTCP   PortProtocol = "TCP"
)

type PortSelector 

type PortSelector struct {

	// Valid port number
	Number uint32 `json:"number,omitempty"`

	// Valid port name
	Name string `json:"name,omitempty"`
}

PortSelector specifies the number of a port to be used for matching or selection for final routing.

func (*PortSelector) DeepCopy 

func (in *PortSelector) DeepCopy() *PortSelector

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PortSelector.

func (*PortSelector) DeepCopyInto 

func (in *PortSelector) DeepCopyInto(out *PortSelector)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type PortTrafficPolicy 

type PortTrafficPolicy struct {
	// Specifies the port name or number of a port on the destination service
	// on which this policy is being applied.
	//
	// Names must comply with DNS label syntax (rfc1035) and therefore cannot
	// collide with numbers. If there are multiple ports on a service with
	// the same protocol the names should be of the form <protocol-name>-<DNS
	// label>.
	Port PortSelector `json:"port"`

	// Settings controlling the load balancer algorithms.
	LoadBalancer *LoadBalancerSettings `json:"loadBalancer,omitempty"`

	// Settings controlling the volume of connections to an upstream service
	ConnectionPool *ConnectionPoolSettings `json:"connectionPool,omitempty"`

	// Settings controlling eviction of unhealthy hosts from the load balancing pool
	OutlierDetection *OutlierDetection `json:"outlierDetection,omitempty"`

	// TLS related settings for connections to the upstream service.
	TLS *TLSSettings `json:"tls,omitempty"`
}

Traffic policies that apply to specific ports of the service

func (*PortTrafficPolicy) DeepCopy 

func (in *PortTrafficPolicy) DeepCopy() *PortTrafficPolicy

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PortTrafficPolicy.

func (*PortTrafficPolicy) DeepCopyInto 

func (in *PortTrafficPolicy) DeepCopyInto(out *PortTrafficPolicy)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Server 

type Server struct {
	// REQUIRED: The Port on which the proxy should listen for incoming
	// connections
	Port Port `json:"port"`

	// A list of hosts exposed by this gateway. While
	// typically applicable to HTTP services, it can also be used for TCP
	// services using TLS with SNI. Standard DNS wildcard prefix syntax
	// is permitted.
	//
	// A VirtualService that is bound to a gateway must having a matching host
	// in its default destination. Specifically one of the VirtualService
	// destination hosts is a strict suffix of a gateway host or
	// a gateway host is a suffix of one of the VirtualService hosts.
	Hosts []string `json:"hosts,omitempty"`

	// Set of TLS related options that govern the server's behavior. Use
	// these options to control if all http requests should be redirected to
	// https, and the TLS modes to use.
	TLS *TLSOptions `json:"tls,omitempty"`
}

Server describes the properties of the proxy on a given load balancer port. For example, 

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: my-ingress
spec:
  selector:
    app: my-ingress-controller
  servers:
  - port:
      number: 80
      name: http2
      protocol: HTTP2

Another example 

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: my-tcp-ingress
spec:
  selector:
    app: my-tcp-ingress-controller
  servers:
  - port:
      number: 27018
      name: mongo
      protocol: MONGO

The following is an example of TLS configuration for port 443 

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: my-tls-ingress
spec:
  selector:
    app: my-tls-ingress-controller
  servers:
  - port:
      number: 443
      name: https
      protocol: HTTPS
    tls:
      mode: SIMPLE
      serverCertificate: /etc/certs/server.pem
      privateKey: /etc/certs/privatekey.pem

func (*Server) DeepCopy 

func (in *Server) DeepCopy() *Server

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Server.

func (*Server) DeepCopyInto 

func (in *Server) DeepCopyInto(out *Server)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type SimpleLB 

type SimpleLB string

Standard load balancing algorithms that require no tuning. 

const (
	// Round Robin policy. Default
	SimpleLBRoundRobin SimpleLB = "ROUND_ROBIN"

	// The least request load balancer uses an O(1) algorithm which selects
	// two random healthy hosts and picks the host which has fewer active
	// requests.
	SimpleLBLeastConn SimpleLB = "LEAST_CONN"

	// The random load balancer selects a random healthy host. The random
	// load balancer generally performs better than round robin if no health
	// checking policy is configured.
	SimpleLBRandom SimpleLB = "RANDOM"

	// This option will forward the connection to the original IP address
	// requested by the caller without doing any form of load
	// balancing. This option must be used with care. It is meant for
	// advanced use cases. Refer to Original Destination load balancer in
	// Envoy for further details.
	SimpleLBPassthrough SimpleLB = "PASSTHROUGH"
)

type Subset 

type Subset struct {
	// REQUIRED. Name of the subset. The service name and the subset name can
	// be used for traffic splitting in a route rule.
	Name string `json:"name"`

	// REQUIRED. Labels apply a filter over the endpoints of a service in the
	// service registry. See route rules for examples of usage.
	Labels map[string]string `json:"labels"`

	// Traffic policies that apply to this subset. Subsets inherit the
	// traffic policies specified at the DestinationRule level. Settings
	// specified at the subset level will override the corresponding settings
	// specified at the DestinationRule level.
	TrafficPolicy *TrafficPolicy `json:"trafficPolicy,omitempty"`
}

A subset of endpoints of a service. Subsets can be used for scenarios like A/B testing, or routing to a specific version of a service. Refer to VirtualService(#VirtualService) documentation for examples of using subsets in these scenarios. In addition, traffic policies defined at the service-level can be overridden at a subset-level. The following rule uses a round robin load balancing policy for all traffic going to a subset named testversion that is composed of endpoints (e.g., pods) with labels (version:v3).

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: bookinfo-ratings

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy:
  loadBalancer:
    simple: LEAST_CONN
subsets:
- name: testversion
  labels:
    version: v3
  trafficPolicy:
    loadBalancer:
      simple: ROUND_ROBIN

**Note:** Policies specified for subsets will not take effect until a route rule explicitly sends traffic to this subset.

func (*Subset) DeepCopy 

func (in *Subset) DeepCopy() *Subset

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Subset.

func (*Subset) DeepCopyInto 

func (in *Subset) DeepCopyInto(out *Subset)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TCPRoute 

type TCPRoute struct {
	// Match conditions to be satisfied for the rule to be
	// activated. All conditions inside a single match block have AND
	// semantics, while the list of match blocks have OR semantics. The rule
	// is matched if any one of the match blocks succeed.
	Match []L4MatchAttributes `json:"match"`

	// The destinations to which the connection should be forwarded to. Weights
	// must add to 100%.
	Route []HTTPRouteDestination `json:"route"`
}

Describes match conditions and actions for routing TCP traffic. The following routing rule forwards traffic arriving at port 27017 for mongo.prod.svc.cluster.local from 172.17.16.* subnet to another Mongo server on port 5555.

```yaml apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: 

name: bookinfo-Mongo

spec: 

hosts:
- mongo.prod.svc.cluster.local
tcp:
- match:
  - port: 27017
    sourceSubnet: "172.17.16.0/24"
  route:
  - destination:
      host: mongo.backup.svc.cluster.local
      port:
        number: 5555

```

func (*TCPRoute) DeepCopy 

func (in *TCPRoute) DeepCopy() *TCPRoute

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TCPRoute.

func (*TCPRoute) DeepCopyInto 

func (in *TCPRoute) DeepCopyInto(out *TCPRoute)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TCPSettings 

type TCPSettings struct {
	// Maximum number of HTTP1 /TCP connections to a destination host.
	MaxConnections int32 `json:"maxConnections,omitempty"`

	// TCP connection timeout.
	ConnectTimeout string `json:"connectTimeout,omitempty"`
}

Settings common to both HTTP and TCP upstream connections.

func (*TCPSettings) DeepCopy 

func (in *TCPSettings) DeepCopy() *TCPSettings

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TCPSettings.

func (*TCPSettings) DeepCopyInto 

func (in *TCPSettings) DeepCopyInto(out *TCPSettings)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TLSMatchAttributes 

type TLSMatchAttributes struct {
	// REQUIRED. SNI (server name indicator) to match on. Wildcard prefixes
	// can be used in the SNI value, e.g., *.com will match foo.example.com
	// as well as example.com. An SNI value must be a subset (i.e., fall
	// within the domain) of the corresponding virtual service's hosts
	SniHosts []string `json:"sniHosts"`

	// IPv4 or IPv6 ip addresses of destination with optional subnet.  E.g.,
	// a.b.c.d/xx form or just a.b.c.d.
	DestinationSubnets []string `json:"destinationSubnets,omitempty"`

	// Specifies the port on the host that is being addressed. Many services
	// only expose a single port or label ports with the protocols they support,
	// in these cases it is not required to explicitly select the port.
	Port int `json:"port,omitempty"`

	// One or more labels that constrain the applicability of a rule to
	// workloads with the given labels. If the VirtualService has a list of
	// gateways specified at the top, it should include the reserved gateway
	// `mesh` in order for this field to be applicable.
	SourceLabels map[string]string `json:"sourceLabels,omitempty"`

	// Names of gateways where the rule should be applied to. Gateway names
	// at the top of the VirtualService (if any) are overridden. The gateway match is
	// independent of sourceLabels.
	Gateways []string `json:"gateways,omitempty"`
}

TLS connection match attributes.

func (*TLSMatchAttributes) DeepCopy 

func (in *TLSMatchAttributes) DeepCopy() *TLSMatchAttributes

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TLSMatchAttributes.

func (*TLSMatchAttributes) DeepCopyInto 

func (in *TLSMatchAttributes) DeepCopyInto(out *TLSMatchAttributes)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TLSMode 

type TLSMode string

TLS modes enforced by the proxy 

const (
	// If set to "PASSTHROUGH", the proxy will forward the connection
	// to the upstream server selected based on the SNI string presented
	// by the client.
	TLSModePassThrough TLSMode = "PASSTHROUGH"

	// If set to "SIMPLE", the proxy will secure connections with
	// standard TLS semantics.
	TLSModeSimple TLSMode = "SIMPLE"

	// If set to "MUTUAL", the proxy will secure connections to the
	// upstream using mutual TLS by presenting client certificates for
	// authentication.
	TLSModeMutual TLSMode = "MUTUAL"
)

type TLSOptions 

type TLSOptions struct {
	// If set to true, the load balancer will send a 302 redirect for all
	// http connections, asking the clients to use HTTPS.
	HTTPSRedirect bool `json:"httpsRedirect"`

	// Optional: Indicates whether connections to this port should be
	// secured using TLS. The value of this field determines how TLS is
	// enforced.
	Mode TLSMode `json:"mode,omitempty"`

	// REQUIRED if mode is "SIMPLE" or "MUTUAL". The path to the file
	// holding the server-side TLS certificate to use.
	ServerCertificate string `json:"serverCertificate"`

	// REQUIRED if mode is "SIMPLE" or "MUTUAL". The path to the file
	// holding the server's private key.
	PrivateKey string `json:"privateKey"`

	// REQUIRED if mode is "MUTUAL". The path to a file containing
	// certificate authority certificates to use in verifying a presented
	// client side certificate.
	CaCertificates string `json:"caCertificates"`

	// The credentialName stands for a unique identifier that can be used
	// to identify the serverCertificate and the privateKey. The
	// credentialName appended with suffix "-cacert" is used to identify
	// the CaCertificates associated with this server. Gateway workloads
	// capable of fetching credentials from a remote credential store such
	// as Kubernetes secrets, will be configured to retrieve the
	// serverCertificate and the privateKey using credentialName, instead
	// of using the file system paths specified above. If using mutual TLS,
	// gateway workload instances will retrieve the CaCertificates using
	// credentialName-cacert. The semantics of the name are platform
	// dependent.  In Kubernetes, the default Istio supplied credential
	// server expects the credentialName to match the name of the
	// Kubernetes secret that holds the server certificate, the private
	// key, and the CA certificate (if using mutual TLS). Set the
	// `ISTIO_META_USER_SDS` metadata variable in the gateway's proxy to
	// enable the dynamic credential fetching feature.
	CredentialName string `json:"credentialName,omitempty"`

	// A list of alternate names to verify the subject identity in the
	// certificate presented by the client.
	SubjectAltNames []string `json:"subjectAltNames"`
}

func (*TLSOptions) DeepCopy 

func (in *TLSOptions) DeepCopy() *TLSOptions

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TLSOptions.

func (*TLSOptions) DeepCopyInto 

func (in *TLSOptions) DeepCopyInto(out *TLSOptions)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TLSRoute 

type TLSRoute struct {
	// REQUIRED. Match conditions to be satisfied for the rule to be
	// activated. All conditions inside a single match block have AND
	// semantics, while the list of match blocks have OR semantics. The rule
	// is matched if any one of the match blocks succeed.
	Match []TLSMatchAttributes `json:"match"`

	// The destination to which the connection should be forwarded to.
	Route []HTTPRouteDestination `json:"route"`
}

Describes match conditions and actions for routing unterminated TLS traffic (TLS/HTTPS) The following routing rule forwards unterminated TLS traffic arriving at port 443 of gateway called mygateway to internal services in the mesh based on the SNI value.

```yaml kind: VirtualService metadata: 

name: bookinfo-sni

spec: 

hosts:
- '*.bookinfo.com'
gateways:
- mygateway
tls:
- match:
  - port: 443
    sniHosts:
    - login.bookinfo.com
  route:
  - destination:
      host: login.prod.svc.cluster.local
- match:
  - port: 443
    sniHosts:
    - reviews.bookinfo.com
  route:
  - destination:
      host: reviews.prod.svc.cluster.local

```

func (*TLSRoute) DeepCopy 

func (in *TLSRoute) DeepCopy() *TLSRoute

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TLSRoute.

func (*TLSRoute) DeepCopyInto 

func (in *TLSRoute) DeepCopyInto(out *TLSRoute)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TLSSettings 

type TLSSettings struct {

	// REQUIRED: Indicates whether connections to this port should be secured
	// using TLS. The value of this field determines how TLS is enforced.
	Mode TLSmode `json:"mode"`

	// REQUIRED if mode is `MUTUAL`. The path to the file holding the
	// client-side TLS certificate to use.
	// Should be empty if mode is `ISTIO_MUTUAL`.
	ClientCertificate string `json:"clientCertificate,omitempty"`

	// REQUIRED if mode is `MUTUAL`. The path to the file holding the
	// client's private key.
	// Should be empty if mode is `ISTIO_MUTUAL`.
	PrivateKey string `json:"privateKey,omitempty"`

	// OPTIONAL: The path to the file containing certificate authority
	// certificates to use in verifying a presented server certificate. If
	// omitted, the proxy will not verify the server's certificate.
	// Should be empty if mode is `ISTIO_MUTUAL`.
	CaCertificates string `json:"caCertificates,omitempty"`

	// A list of alternate names to verify the subject identity in the
	// certificate. If specified, the proxy will verify that the server
	// certificate's subject alt name matches one of the specified values.
	// Should be empty if mode is `ISTIO_MUTUAL`.
	SubjectAltNames []string `json:"subjectAltNames,omitempty"`

	// SNI string to present to the server during TLS handshake.
	// Should be empty if mode is `ISTIO_MUTUAL`.
	Sni string `json:"sni,omitempty"`
}

SSL/TLS related settings for upstream connections. See Envoy's [TLS context](https://www.envoyproxy.io/docs/envoy/latest/api-v1/cluster_manager/cluster_ssl.html#config-cluster-manager-cluster-ssl) for more details. These settings are common to both HTTP and TCP upstreams.

For example, the following rule configures a client to use mutual TLS for connections to upstream database cluster.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: db-mtls

spec: 

host: mydbserver.prod.svc.cluster.local
trafficPolicy:
  tls:
    mode: MUTUAL
    clientCertificate: /etc/certs/myclientcert.pem
    privateKey: /etc/certs/client_private_key.pem
    caCertificates: /etc/certs/rootcacerts.pem

The following rule configures a client to use TLS when talking to a foreign service whose domain matches *.foo.com.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: tls-foo

spec: 

host: "*.foo.com"
trafficPolicy:
  tls:
    mode: SIMPLE

The following rule configures a client to use Istio mutual TLS when talking to rating services.

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: 

name: ratings-istio-mtls

spec: 

host: ratings.prod.svc.cluster.local
trafficPolicy:
  tls:
    mode: ISTIO_MUTUAL

func (*TLSSettings) DeepCopy 

func (in *TLSSettings) DeepCopy() *TLSSettings

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TLSSettings.

func (*TLSSettings) DeepCopyInto 

func (in *TLSSettings) DeepCopyInto(out *TLSSettings)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type TLSmode 

type TLSmode string

TLS connection mode 

const (
	// Do not setup a TLS connection to the upstream endpoint.
	TLSmodeDisable TLSmode = "DISABLE"

	// Originate a TLS connection to the upstream endpoint.
	TLSmodeSimple TLSmode = "SIMPLE"

	// Secure connections to the upstream using mutual TLS by presenting
	// client certificates for authentication.
	TLSmodeMutual TLSmode = "MUTUAL"

	// Secure connections to the upstream using mutual TLS by presenting
	// client certificates for authentication.
	// Compared to Mutual mode, this mode uses certificates generated
	// automatically by Istio for mTLS authentication. When this mode is
	// used, all other fields in `TLSSettings` should be empty.
	TLSmodeIstioMutual TLSmode = "ISTIO_MUTUAL"
)

type TrafficPolicy 

type TrafficPolicy struct {

	// Settings controlling the load balancer algorithms.
	LoadBalancer *LoadBalancerSettings `json:"loadBalancer,omitempty"`

	// Settings controlling the volume of connections to an upstream service
	ConnectionPool *ConnectionPoolSettings `json:"connectionPool,omitempty"`

	// Settings controlling eviction of unhealthy hosts from the load balancing pool
	OutlierDetection *OutlierDetection `json:"outlierDetection,omitempty"`

	// TLS related settings for connections to the upstream service.
	TLS *TLSSettings `json:"tls,omitempty"`

	// Traffic policies specific to individual ports. Note that port level
	// settings will override the destination-level settings. Traffic
	// settings specified at the destination-level will not be inherited when
	// overridden by port-level settings, i.e. default values will be applied
	// to fields omitted in port-level traffic policies.
	PortLevelSettings []PortTrafficPolicy `json:"portLevelSettings,omitempty"`
}

Traffic policies to apply for a specific destination, across all destination ports. See DestinationRule for examples.

func (*TrafficPolicy) DeepCopy 

func (in *TrafficPolicy) DeepCopy() *TrafficPolicy

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TrafficPolicy.

func (*TrafficPolicy) DeepCopyInto 

func (in *TrafficPolicy) DeepCopyInto(out *TrafficPolicy)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type VirtualService 

type VirtualService struct {
	metav1.TypeMeta   `json:",inline"`
	metav1.ObjectMeta `json:"metadata,omitempty"`

	Spec VirtualServiceSpec `json:"spec"`
}

VirtualService

func (*VirtualService) DeepCopy 

func (in *VirtualService) DeepCopy() *VirtualService

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VirtualService.

func (*VirtualService) DeepCopyInto 

func (in *VirtualService) DeepCopyInto(out *VirtualService)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*VirtualService) DeepCopyObject 

func (in *VirtualService) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type VirtualServiceList 

type VirtualServiceList struct {
	metav1.TypeMeta `json:",inline"`
	metav1.ListMeta `json:"metadata"`

	Items []VirtualService `json:"items"`
}

VirtualServiceList is a list of VirtualService resources

func (*VirtualServiceList) DeepCopy 

func (in *VirtualServiceList) DeepCopy() *VirtualServiceList

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VirtualServiceList.

func (*VirtualServiceList) DeepCopyInto 

func (in *VirtualServiceList) DeepCopyInto(out *VirtualServiceList)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*VirtualServiceList) DeepCopyObject 

func (in *VirtualServiceList) DeepCopyObject() runtime.Object

DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.

type VirtualServiceSpec 

type VirtualServiceSpec struct {
	// REQUIRED. The destination address for traffic captured by this virtual
	// service. Could be a DNS name with wildcard prefix or a CIDR
	// prefix. Depending on the platform, short-names can also be used
	// instead of a FQDN (i.e. has no dots in the name). In such a scenario,
	// the FQDN of the host would be derived based on the underlying
	// platform.
	//
	// For example on Kubernetes, when hosts contains a short name, Istio will
	// interpret the short name based on the namespace of the rule. Thus, when a
	// client namespace applies a rule in the "default" namespace containing a name
	// "reviews, Istio will setup routes to the "reviews.default.svc.cluster.local"
	// service. However, if a different name such as "reviews.sales.svc.cluster.local"
	// is used, it would be treated as a FQDN during virtual host matching.
	// In Consul, a plain service name would be resolved to the FQDN
	// "reviews.service.consul".
	//
	// Note that the hosts field applies to both HTTP and TCP
	// services. Service inside the mesh, i.e., those found in the service
	// registry, must always be referred to using their alphanumeric
	// names. IP addresses or CIDR prefixes are allowed only for services
	// defined via the Gateway.
	Hosts []string `json:"hosts"`

	// The names of gateways and sidecars that should apply these routes. A
	// single VirtualService is used for sidecars inside the mesh as well
	// as for one or more gateways. The selection condition imposed by this field
	// can be overridden using the source field in the match conditions of HTTP/TCP
	// routes. The reserved word "mesh" is used to imply all the sidecars in
	// the mesh. When this field is omitted, the default gateway ("mesh")
	// will be used, which would apply the rule to all sidecars in the
	// mesh. If a list of gateway names is provided, the rules will apply
	// only to the gateways. To apply the rules to both gateways and sidecars,
	// specify "mesh" as one of the gateway names.
	Gateways []string `json:"gateways,omitempty"`

	// An ordered list of route rules for HTTP traffic.
	// The first rule matching an incoming request is used.
	HTTP []HTTPRoute `json:"http,omitempty"`

	// An ordered list of route rules for TCP traffic.
	// The first rule matching an incoming request is used.
	TCP []TCPRoute `json:"tcp,omitempty"`

	TLS []TLSRoute `json:"tls,omitempty"`

	// A list of namespaces to which this destination rule is exported.
	// The resolution of a destination rule to apply to a service occurs in the
	// context of a hierarchy of namespaces. Exporting a destination rule allows
	// it to be included in the resolution hierarchy for services in
	// other namespaces. This feature provides a mechanism for service owners
	// and mesh administrators to control the visibility of destination rules
	// across namespace boundaries.
	//
	// If no namespaces are specified then the destination rule is exported to all
	// namespaces by default.
	//
	// The value "." is reserved and defines an export to the same namespace that
	// the destination rule is declared in. Similarly, the value "*" is reserved and
	// defines an export to all namespaces.
	//
	// NOTE: in the current release, the `exportTo` value is restricted to
	// "." or "*" (i.e., the current namespace or all namespaces).
	ExportTo []string `json:"exportTo,omitempty"`
}

A VirtualService defines a set of traffic routing rules to apply when a host is addressed. Each routing rule defines matching criteria for traffic of a specific protocol. If the traffic is matched, then it is sent to a named destination service (or subset/version of it) defined in the registry.

The source of traffic can also be matched in a routing rule. This allows routing to be customized for specific client contexts.

The following example routes all HTTP traffic by default to pods of the reviews service with label "version: v1". In addition, HTTP requests containing /wpcatalog/, /consumercatalog/ url prefixes will be rewritten to /newcatalog and sent to pods with label "version: v2". The rules will be applied at the gateway named "bookinfo" as well as at all the sidecars in the mesh (indicated by the reserved gateway name "mesh"). 

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: reviews-route
spec:
  hosts:
  - reviews
  gateways: # if omitted, defaults to "mesh"
  - bookinfo
  - mesh
  http:
  - match:
    - uri:
        prefix: "/wpcatalog"
    - uri:
        prefix: "/consumercatalog"
    rewrite:
      uri: "/newcatalog"
    route:
    - destination:
        host: reviews
        subset: v2
  - route:
    - destination:
        host: reviews
        subset: v1

A subset/version of a route destination is identified with a reference to a named service subset which must be declared in a corresponding DestinationRule. 

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: reviews-destination
spec:
  host: reviews
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2

A host name can be defined by only one VirtualService. A single VirtualService can be used to describe traffic properties for multiple HTTP and TCP ports.

func (*VirtualServiceSpec) DeepCopy 

func (in *VirtualServiceSpec) DeepCopy() *VirtualServiceSpec

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VirtualServiceSpec.

func (*VirtualServiceSpec) DeepCopyInto 

func (in *VirtualServiceSpec) DeepCopyInto(out *VirtualServiceSpec)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

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