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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,193 @@ | ||
| // Copyright Envoy Gateway Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // The full text of the Apache license is available in the LICENSE file at | ||
| // the root of the repo. | ||
|
|
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| package v1alpha1 | ||
|
|
||
| import ( | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| ) | ||
|
|
||
| const ( | ||
| // KindBackend is the name of the Backend kind. | ||
| KindBackend = "Backend" | ||
| ) | ||
|
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| // AppProtocolType defines various backend applications protocols supported by Envoy Gateway | ||
| // | ||
| // +kubebuilder:validation:Enum=gateway.envoyproxy.io/h2c;gateway.envoyproxy.io/ws;gateway.envoyproxy.io/wss | ||
| // +notImplementedHide | ||
| type AppProtocolType string | ||
|
|
||
| const ( | ||
| // AppProtocolTypeH2C defines the HTTP/2 application protocol. | ||
| AppProtocolTypeH2C AppProtocolType = "gateway.envoyproxy.io/h2c" | ||
| // AppProtocolTypeWS defines the WebSocket over HTTP protocol. | ||
| AppProtocolTypeWS AppProtocolType = "gateway.envoyproxy.io/ws" | ||
| // AppProtocolTypeWSS defines the WebSocket over HTTPS protocol. | ||
| AppProtocolTypeWSS AppProtocolType = "gateway.envoyproxy.io/wss" | ||
| ) | ||
|
|
||
| // Backend allows the user to configure the endpoints of a backend and | ||
| // the behavior of the connection from Envoy Proxy to the backend. | ||
| // | ||
| // +kubebuilder:object:root=true | ||
| // +kubebuilder:resource:categories=envoy-gateway,shortName=be | ||
| // +kubebuilder:subresource:status | ||
| // +kubebuilder:printcolumn:name="Status",type=string,JSONPath=`.status.conditions[?(@.type=="Accepted")].reason` | ||
| // +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp` | ||
| // +notImplementedHide | ||
| type Backend struct { | ||
| metav1.TypeMeta `json:",inline"` | ||
| metav1.ObjectMeta `json:"metadata,omitempty"` | ||
|
|
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| // Spec defines the desired state of Backend. | ||
| Spec BackendSpec `json:"spec"` | ||
|
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| // Status defines the current status of Backend. | ||
| Status BackendStatus `json:"status,omitempty"` | ||
| } | ||
|
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| // BackendEndpoint describes a backend endpoint, which can be either a fully-qualified domain name, IPv4 address or unix domain socket | ||
| // corresponding to Envoy's Address: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#config-core-v3-address | ||
| // | ||
| // +kubebuilder:validation:XValidation:rule="(has(self.fqdn) || has(self.ipv4) || has(self.unix))",message="one of fqdn, ipv4 or unix must be specified" | ||
| // +kubebuilder:validation:XValidation:rule="((has(self.fqdn) && !(has(self.ipv4) || has(self.unix))) || (has(self.ipv4) && !(has(self.fqdn) || has(self.unix))) || (has(self.unix) && !(has(self.ipv4) || has(self.fqdn))))",message="only one of fqdn, ipv4 or unix can be specified" | ||
| // +notImplementedHide | ||
| type BackendEndpoint struct { | ||
| // FQDN defines a FQDN endpoint | ||
| // | ||
| // +optional | ||
| FQDN *FQDNEndpoint `json:"fqdn,omitempty"` | ||
|
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| // IPv4 defines an IPv4 endpoint | ||
| // | ||
| // +optional | ||
| IPv4 *IPv4Endpoint `json:"ipv4,omitempty"` | ||
|
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| // Unix defines the unix domain socket endpoint | ||
| // | ||
| // +optional | ||
| Unix *UnixSocket `json:"unix,omitempty"` | ||
| } | ||
|
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| // IPv4Endpoint describes TCP/UDP socket address, corresponding to Envoy's Socket Address | ||
| // https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#config-core-v3-socketaddress | ||
| // | ||
| // +notImplementedHide | ||
| type IPv4Endpoint struct { | ||
| // Address defines the IPv4 address of the backend endpoint. | ||
| // | ||
| // +kubebuilder:validation:MinLength=7 | ||
| // +kubebuilder:validation:MaxLength=15 | ||
| // +kubebuilder:validation:Pattern=`^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$` | ||
| Address string `json:"address"` | ||
|
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| // Port defines the port of the backend endpoint. | ||
| // | ||
| // +kubebuilder:validation:Minimum=0 | ||
| // +kubebuilder:validation:Maximum=65535 | ||
| Port int32 `json:"port"` | ||
| } | ||
|
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| // FQDNEndpoint describes TCP/UDP socket address, corresponding to Envoy's Socket Address | ||
| // https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#config-core-v3-socketaddress | ||
| // | ||
| // +notImplementedHide | ||
| type FQDNEndpoint struct { | ||
| // Hostname defines the FQDN hostname of the backend endpoint. | ||
| // | ||
| // +kubebuilder:validation:MinLength=1 | ||
| // +kubebuilder:validation:MaxLength=253 | ||
| // +kubebuilder:validation:Pattern=`^(\*\.)?[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$` | ||
| Hostname string `json:"hostname"` | ||
|
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| // Port defines the port of the backend endpoint. | ||
| // | ||
| // +kubebuilder:validation:Minimum=0 | ||
| // +kubebuilder:validation:Maximum=65535 | ||
| Port int32 `json:"port"` | ||
| } | ||
|
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| // UnixSocket describes TCP/UDP unix domain socket address, corresponding to Envoy's Pipe | ||
| // https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/address.proto#config-core-v3-pipe | ||
| // | ||
| // +notImplementedHide | ||
| type UnixSocket struct { | ||
| // Path defines the unix domain socket path of the backend endpoint. | ||
| Path string `json:"path"` | ||
| } | ||
|
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| // BackendSpec describes the desired state of BackendSpec. | ||
| // | ||
| // +notImplementedHide | ||
| type BackendSpec struct { | ||
| // Endpoints defines the endpoints to be used when connecting to the backend. | ||
| // | ||
| // +kubebuilder:validation:MinItems=1 | ||
| // +kubebuilder:validation:MaxItems=4 | ||
| // +kubebuilder:validation:XValidation:rule="self.all(f, has(f.fqdn)) || !self.exists(f, has(f.fqdn))",message="fqdn addresses cannot be mixed with other address types" | ||
| Endpoints []BackendEndpoint `json:"endpoints,omitempty"` | ||
|
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| // AppProtocols defines the application protocols to be supported when connecting to the backend. | ||
| // | ||
| // +optional | ||
| AppProtocols []AppProtocolType `json:"appProtocols,omitempty"` | ||
| } | ||
|
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| // BackendConditionType is a type of condition for a backend. This type should be | ||
| // used with a Backend resource Status.Conditions field. | ||
| type BackendConditionType string | ||
|
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| // BackendConditionReason is a reason for a backend condition. | ||
| type BackendConditionReason string | ||
|
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| const ( | ||
| // BackendConditionAccepted indicates whether the backend has been accepted or | ||
| // rejected by a targeted resource, and why. | ||
| // | ||
| // Possible reasons for this condition to be True are: | ||
| // | ||
| // * "Accepted" | ||
| // | ||
| // Possible reasons for this condition to be False are: | ||
| // | ||
| // * "Invalid" | ||
| // | ||
| BackendConditionAccepted BackendConditionType = "Accepted" | ||
|
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| // BackendReasonAccepted is used with the "Accepted" condition when the backend | ||
| // has been accepted by the targeted resource. | ||
| BackendReasonAccepted BackendConditionReason = "Accepted" | ||
|
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| // BackendReasonInvalid is used with the "Accepted" condition when the backend | ||
| // is syntactically or semantically invalid. | ||
| BackendReasonInvalid BackendConditionReason = "Invalid" | ||
| ) | ||
|
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||
| // BackendStatus defines the state of Backend | ||
| // +notImplementedHide | ||
| type BackendStatus struct { | ||
| // Conditions describe the current conditions of the Backend. | ||
| // | ||
| // +optional | ||
| // +listType=map | ||
| // +listMapKey=type | ||
| // +kubebuilder:validation:MaxItems=8 | ||
| Conditions []metav1.Condition `json:"conditions,omitempty"` | ||
| } | ||
|
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| // BackendList contains a list of Backend resources. | ||
| // | ||
| // +kubebuilder:object:root=true | ||
| // +notImplementedHide | ||
| type BackendList struct { | ||
| metav1.TypeMeta `json:",inline"` | ||
| metav1.ListMeta `json:"metadata,omitempty"` | ||
| Items []Backend `json:"items"` | ||
| } | ||
|
|
||
| func init() { | ||
| SchemeBuilder.Register(&Backend{}, &BackendList{}) | ||
| } |
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