v1alpha3

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"`
}

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"`
}

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"`

	// String patterns that match allowed origins. An origin is allowed if
	// any of the string matchers match. If a match is found, then the
	// outgoing Access-Control-Allow-Origin would be set to the origin as
	// provided by the client.
	AllowOrigins []*v1alpha1.StringMatch `json:"allowOrigins,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 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"`
}

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"`
}

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

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

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"`
}

type DestinationWeight 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"`
}

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"`
}

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"`
}

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"`
}

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"`
}

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,omitempty"`

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

	// Specifies the conditions under which retry takes place.
	// One or more policies can be specified using a ‘,’ delimited list.
	// The supported policies can be found in
	// <https://www.envoyproxy.io/docs/envoy/latest/configuration/http_filters/router_filter#x-envoy-retry-on>
	// and <https://www.envoyproxy.io/docs/envoy/latest/configuration/http_filters/router_filter#x-envoy-retry-grpc-on>
	RetryOn string `json:"retryOn,omitempty"`
}

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"`
}

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 []DestinationWeight `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"`

	// 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"`

	// Percentage of the traffic to be mirrored by the `mirror` field.
	// If this field is absent, all the traffic (100%) will be mirrored.
	// Max value is 100.
	MirrorPercentage *Percent `json:"mirrorPercentage,omitempty"`

	// Cross-Origin Resource Sharing policy (CORS). Refer to
	// https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
	// for further details about cross origin resource sharing.
	CorsPolicy *CorsPolicy `json:"corsPolicy,omitempty"`

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

type HTTPSettings struct {
	// Specify if http1.1 connection should be upgraded to http2 for the associated destination.
	// DEFAULT - Use the global default.
	// DO_NOT_UPGRADE - Do not upgrade the connection to http2.
	// UPGRADE - Upgrade the connection to http2.
	H2UpgradePolicy string `json:"h2UpgradePolicy,omitempty"`

	// Maximum number of pending HTTP requests to a destination. Default 2^32-1.
	HTTP1MaxPendingRequests int32 `json:"http1MaxPendingRequests,omitempty"`

	// Maximum number of requests to a backend. Default 2^32-1.
	HTTP2MaxRequests int32 `json:"http2MaxRequests,omitempty"`

	// Maximum number of requests per connection to a backend. Setting this
	// parameter to 1 disables keep alive. Default 0, meaning "unlimited",
	// up to 2^29.
	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 2^32-1.
	MaxRetries int32 `json:"maxRetries,omitempty"`

	// The idle timeout for upstream connection pool connections. The idle timeout is defined as the period in which there are no active requests.
	// If not set, the default is 1 hour. When the idle timeout is reached the connection will be closed.
	// Note that request based timeouts mean that HTTP/2 PINGs will not keep the connection alive. Applies to both HTTP1.1 and HTTP2 connections.
	IdleTimeout string `json:"idleTimeout,omitempty"`
}

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

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"`
}

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

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

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"`
}

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. This is only valid when the
	// destination service has several IPs and the application explicitly
	// specifies a particular IP.
	DestinationSubnet string `json:"destinationSubnet,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"`

	// IPv4 or IPv6 ip address of source with optional subnet. E.g., a.b.c.d/xx
	// form or just a.b.c.d
	SourceSubnet string `json:"sourceSubnet,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.
	SourceLabel map[string]string `json:"sourceLabel,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"`
}

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"`
}

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"`

	// Number of gateway errors before a host is ejected from the connection pool.
	// When the upstream host is accessed over HTTP, a 502, 503, or 504 return
	// code qualifies as a gateway error. When the upstream host is accessed over
	// an opaque TCP connection, connect timeouts and connection error/failure
	// events qualify as a gateway error.
	// This feature is disabled by default or when set to the value 0.
	//
	// Note that consecutive_gateway_errors and consecutive_5xx_errors can be
	// used separately or together. Because the errors counted by
	// consecutive_gateway_errors are also included in consecutive_5xx_errors,
	// if the value of consecutive_gateway_errors is greater than or equal to
	// the value of consecutive_5xx_errors, consecutive_gateway_errors will have
	// no effect.
	ConsecutiveGatewayErrors *uint32 `json:"consecutiveGatewayErrors,omitempty"`

	// Number of 5xx errors before a host is ejected from the connection pool.
	// When the upstream host is accessed over an opaque TCP connection, connect
	// timeouts, connection error/failure and request failure events qualify as a
	// 5xx error.
	// This feature defaults to 5 but can be disabled by setting the value to 0.
	//
	// Note that consecutive_gateway_errors and consecutive_5xx_errors can be
	// used separately or together. Because the errors counted by
	// consecutive_gateway_errors are also included in consecutive_5xx_errors,
	// if the value of consecutive_gateway_errors is greater than or equal to
	// the value of consecutive_5xx_errors, consecutive_gateway_errors will have
	// no effect.
	Consecutive5xxErrors *uint32 `json:"consecutive5xxErrors,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"`

	// Outlier detection will be enabled as long as the associated load balancing
	// pool has at least min_health_percent hosts in healthy mode. When the
	// percentage of healthy hosts in the load balancing pool drops below this
	// threshold, outlier detection will be disabled and the proxy will load balance
	// across all hosts in the pool (healthy and unhealthy). The threshold can be
	// disabled by setting it to 0%. The default is 0% as it's not typically
	// applicable in k8s environments with few pods per service.
	MinHealthPercent int32 `json:"minHealthPercent,omitempty"`
}

type Percent struct {
	Value float64 `json:"value,omitempty"`
}

type PortSelector struct {

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

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

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"`
}

type SimpleLB string

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"`
}

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,omitempty"`

	// The destination to which the connection should be forwarded to.
	// Currently, only one destination is allowed for TCP services. When TCP
	// weighted routing support is introduced in Envoy, multiple destinations
	// with weights can be specified.
	Route DestinationWeight `json:"route"`
}

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"`
}

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"`
}

type TLSmode string

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"`
}

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

	Spec VirtualServiceSpec `json:"spec"`
}

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

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

type VirtualServiceSpec struct {
	// REQUIRED. The destination hosts to which traffic is being sent. Could
	// be a DNS name with wildcard prefix or an IP address.  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.
	//
	// **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.
	//
	// *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._
	//
	// 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 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 protocol-specific 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. HTTP routes will be
	// applied to platform service ports named 'http-*'/'http2-*'/'grpc-*', gateway
	// ports with protocol HTTP/HTTP2/GRPC/ TLS-terminated-HTTPS and service
	// entry ports using HTTP/HTTP2/GRPC protocols.  The first rule matching
	// an incoming request is used.
	Http []HTTPRoute `json:"http,omitempty"`

	// An ordered list of route rules for opaque TCP traffic. TCP routes will
	// be applied to any port that is not a HTTP or TLS port. The first rule
	// matching an incoming request is used.
	Tcp []TCPRoute `json:"tcp,omitempty"`
}