Struct GRPCRouteSpec

pub struct GRPCRouteSpec {
    pub hostnames: Option<Vec<String>>,
    pub parent_refs: Option<Vec<GRPCRouteParentRefs>>,
    pub rules: Option<Vec<GRPCRouteRules>>,
}

Spec defines the desired state of GRPCRoute.

Fields

hostnames: Option<Vec<String>>

Hostnames defines a set of hostnames to match against the GRPC Host header to select a GRPCRoute to process the request. This matches the RFC 1123 definition of a hostname with 2 notable exceptions:

1. IPs are not allowed.
2. A hostname may be prefixed with a wildcard label (*.). The wildcard label MUST appear by itself as the first label.

If a hostname is specified by both the Listener and GRPCRoute, there MUST be at least one intersecting hostname for the GRPCRoute to be attached to the Listener. For example:

• A Listener with test.example.com as the hostname matches GRPCRoutes that have either not specified any hostnames, or have specified at least one of test.example.com or *.example.com.
• A Listener with *.example.com as the hostname matches GRPCRoutes that have either not specified any hostnames or have specified at least one hostname that matches the Listener hostname. For example, test.example.com and *.example.com would both match. On the other hand, example.com and test.example.net would not match.

Hostnames that are prefixed with a wildcard label (*.) are interpreted as a suffix match. That means that a match for *.example.com would match both test.example.com, and foo.test.example.com, but not example.com.

If both the Listener and GRPCRoute have specified hostnames, any GRPCRoute hostnames that do not match the Listener hostname MUST be ignored. For example, if a Listener specified *.example.com, and the GRPCRoute specified test.example.com and test.example.net, test.example.net MUST NOT be considered for a match.

If both the Listener and GRPCRoute have specified hostnames, and none match with the criteria above, then the GRPCRoute MUST NOT be accepted by the implementation. The implementation MUST raise an ‘Accepted’ Condition with a status of False in the corresponding RouteParentStatus.

If a Route (A) of type HTTPRoute or GRPCRoute is attached to a Listener and that listener already has another Route (B) of the other type attached and the intersection of the hostnames of A and B is non-empty, then the implementation MUST accept exactly one of these two routes, determined by the following criteria, in order:

• The oldest Route based on creation timestamp.
• The Route appearing first in alphabetical order by “{namespace}/{name}”.

The rejected Route MUST raise an ‘Accepted’ condition with a status of ‘False’ in the corresponding RouteParentStatus.

Support: Core

parent_refs: Option<Vec<GRPCRouteParentRefs>>

ParentRefs references the resources (usually Gateways) that a Route wants to be attached to. Note that the referenced parent resource needs to allow this for the attachment to be complete. For Gateways, that means the Gateway needs to allow attachment from Routes of this kind and namespace. For Services, that means the Service must either be in the same namespace for a “producer” route, or the mesh implementation must support and allow “consumer” routes for the referenced Service. ReferenceGrant is not applicable for governing ParentRefs to Services - it is not possible to create a “producer” route for a Service in a different namespace from the Route.

There are two kinds of parent resources with “Core” support:

• Gateway (Gateway conformance profile)
• Service (Mesh conformance profile, ClusterIP Services only)

This API may be extended in the future to support additional kinds of parent resources.

ParentRefs must be distinct. This means either that:

• They select different objects. If this is the case, then parentRef entries are distinct. In terms of fields, this means that the multi-part key defined by group, kind, namespace, and name must be unique across all parentRef entries in the Route.
• They do not select different objects, but for each optional field used, each ParentRef that selects the same object must set the same set of optional fields to different values. If one ParentRef sets a combination of optional fields, all must set the same combination.

Some examples:

• If one ParentRef sets sectionName, all ParentRefs referencing the same object must also set sectionName.
• If one ParentRef sets port, all ParentRefs referencing the same object must also set port.
• If one ParentRef sets sectionName and port, all ParentRefs referencing the same object must also set sectionName and port.

It is possible to separately reference multiple distinct objects that may be collapsed by an implementation. For example, some implementations may choose to merge compatible Gateway Listeners together. If that is the case, the list of routes attached to those resources should also be merged.

Note that for ParentRefs that cross namespace boundaries, there are specific rules. Cross-namespace references are only valid if they are explicitly allowed by something in the namespace they are referring to. For example, Gateway has the AllowedRoutes field, and ReferenceGrant provides a generic way to enable other kinds of cross-namespace reference.

ParentRefs from a Route to a Service in the same namespace are “producer” routes, which apply default routing rules to inbound connections from any namespace to the Service.

ParentRefs from a Route to a Service in a different namespace are “consumer” routes, and these routing rules are only applied to outbound connections originating from the same namespace as the Route, for which the intended destination of the connections are a Service targeted as a ParentRef of the Route.

rules: Option<Vec<GRPCRouteRules>>

Rules are a list of GRPC matchers, filters and actions.

Trait Implementations

impl Clone for GRPCRouteSpec

fn clone(&self) -> GRPCRouteSpec

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GRPCRouteSpec

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GRPCRouteSpec

fn default() -> GRPCRouteSpec

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GRPCRouteSpec

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for GRPCRouteSpec

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(gen: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for GRPCRouteSpec

fn eq(&self, other: &GRPCRouteSpec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for GRPCRouteSpec

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GRPCRouteSpec