| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package v1 |
| |
| import ( |
| "k8s.io/api/core/v1" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/util/intstr" |
| ) |
| |
| // +genclient |
| // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object |
| |
| // NetworkPolicy describes what network traffic is allowed for a set of Pods |
| type NetworkPolicy struct { |
| metav1.TypeMeta `json:",inline"` |
| // Standard object's metadata. |
| // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata |
| // +optional |
| metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"` |
| |
| // Specification of the desired behavior for this NetworkPolicy. |
| // +optional |
| Spec NetworkPolicySpec `json:"spec,omitempty" protobuf:"bytes,2,opt,name=spec"` |
| } |
| |
| // Policy Type string describes the NetworkPolicy type |
| // This type is beta-level in 1.8 |
| type PolicyType string |
| |
| const ( |
| // PolicyTypeIngress is a NetworkPolicy that affects ingress traffic on selected pods |
| PolicyTypeIngress PolicyType = "Ingress" |
| // PolicyTypeEgress is a NetworkPolicy that affects egress traffic on selected pods |
| PolicyTypeEgress PolicyType = "Egress" |
| ) |
| |
| // NetworkPolicySpec provides the specification of a NetworkPolicy |
| type NetworkPolicySpec struct { |
| // Selects the pods to which this NetworkPolicy object applies. The array of |
| // ingress rules is applied to any pods selected by this field. Multiple network |
| // policies can select the same set of pods. In this case, the ingress rules for |
| // each are combined additively. This field is NOT optional and follows standard |
| // label selector semantics. An empty podSelector matches all pods in this |
| // namespace. |
| PodSelector metav1.LabelSelector `json:"podSelector" protobuf:"bytes,1,opt,name=podSelector"` |
| |
| // List of ingress rules to be applied to the selected pods. Traffic is allowed to |
| // a pod if there are no NetworkPolicies selecting the pod |
| // (and cluster policy otherwise allows the traffic), OR if the traffic source is |
| // the pod's local node, OR if the traffic matches at least one ingress rule |
| // across all of the NetworkPolicy objects whose podSelector matches the pod. If |
| // this field is empty then this NetworkPolicy does not allow any traffic (and serves |
| // solely to ensure that the pods it selects are isolated by default) |
| // +optional |
| Ingress []NetworkPolicyIngressRule `json:"ingress,omitempty" protobuf:"bytes,2,rep,name=ingress"` |
| |
| // List of egress rules to be applied to the selected pods. Outgoing traffic is |
| // allowed if there are no NetworkPolicies selecting the pod (and cluster policy |
| // otherwise allows the traffic), OR if the traffic matches at least one egress rule |
| // across all of the NetworkPolicy objects whose podSelector matches the pod. If |
| // this field is empty then this NetworkPolicy limits all outgoing traffic (and serves |
| // solely to ensure that the pods it selects are isolated by default). |
| // This field is beta-level in 1.8 |
| // +optional |
| Egress []NetworkPolicyEgressRule `json:"egress,omitempty" protobuf:"bytes,3,rep,name=egress"` |
| |
| // List of rule types that the NetworkPolicy relates to. |
| // Valid options are Ingress, Egress, or Ingress,Egress. |
| // If this field is not specified, it will default based on the existence of Ingress or Egress rules; |
| // policies that contain an Egress section are assumed to affect Egress, and all policies |
| // (whether or not they contain an Ingress section) are assumed to affect Ingress. |
| // If you want to write an egress-only policy, you must explicitly specify policyTypes [ "Egress" ]. |
| // Likewise, if you want to write a policy that specifies that no egress is allowed, |
| // you must specify a policyTypes value that include "Egress" (since such a policy would not include |
| // an Egress section and would otherwise default to just [ "Ingress" ]). |
| // This field is beta-level in 1.8 |
| // +optional |
| PolicyTypes []PolicyType `json:"policyTypes,omitempty" protobuf:"bytes,4,rep,name=policyTypes,casttype=PolicyType"` |
| } |
| |
| // NetworkPolicyIngressRule describes a particular set of traffic that is allowed to the pods |
| // matched by a NetworkPolicySpec's podSelector. The traffic must match both ports and from. |
| type NetworkPolicyIngressRule struct { |
| // List of ports which should be made accessible on the pods selected for this |
| // rule. Each item in this list is combined using a logical OR. If this field is |
| // empty or missing, this rule matches all ports (traffic not restricted by port). |
| // If this field is present and contains at least one item, then this rule allows |
| // traffic only if the traffic matches at least one port in the list. |
| // +optional |
| Ports []NetworkPolicyPort `json:"ports,omitempty" protobuf:"bytes,1,rep,name=ports"` |
| |
| // List of sources which should be able to access the pods selected for this rule. |
| // Items in this list are combined using a logical OR operation. If this field is |
| // empty or missing, this rule matches all sources (traffic not restricted by |
| // source). If this field is present and contains at least on item, this rule |
| // allows traffic only if the traffic matches at least one item in the from list. |
| // +optional |
| From []NetworkPolicyPeer `json:"from,omitempty" protobuf:"bytes,2,rep,name=from"` |
| } |
| |
| // NetworkPolicyEgressRule describes a particular set of traffic that is allowed out of pods |
| // matched by a NetworkPolicySpec's podSelector. The traffic must match both ports and to. |
| // This type is beta-level in 1.8 |
| type NetworkPolicyEgressRule struct { |
| // List of destination ports for outgoing traffic. |
| // Each item in this list is combined using a logical OR. If this field is |
| // empty or missing, this rule matches all ports (traffic not restricted by port). |
| // If this field is present and contains at least one item, then this rule allows |
| // traffic only if the traffic matches at least one port in the list. |
| // +optional |
| Ports []NetworkPolicyPort `json:"ports,omitempty" protobuf:"bytes,1,rep,name=ports"` |
| |
| // List of destinations for outgoing traffic of pods selected for this rule. |
| // Items in this list are combined using a logical OR operation. If this field is |
| // empty or missing, this rule matches all destinations (traffic not restricted by |
| // destination). If this field is present and contains at least one item, this rule |
| // allows traffic only if the traffic matches at least one item in the to list. |
| // +optional |
| To []NetworkPolicyPeer `json:"to,omitempty" protobuf:"bytes,2,rep,name=to"` |
| } |
| |
| // NetworkPolicyPort describes a port to allow traffic on |
| type NetworkPolicyPort struct { |
| // The protocol (TCP, UDP, or SCTP) which traffic must match. If not specified, this |
| // field defaults to TCP. |
| // +optional |
| Protocol *v1.Protocol `json:"protocol,omitempty" protobuf:"bytes,1,opt,name=protocol,casttype=k8s.io/api/core/v1.Protocol"` |
| |
| // The port on the given protocol. This can either be a numerical or named port on |
| // a pod. If this field is not provided, this matches all port names and numbers. |
| // +optional |
| Port *intstr.IntOrString `json:"port,omitempty" protobuf:"bytes,2,opt,name=port"` |
| } |
| |
| // IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods |
| // matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should |
| // not be included within this rule. |
| type IPBlock struct { |
| // CIDR is a string representing the IP Block |
| // Valid examples are "192.168.1.1/24" |
| CIDR string `json:"cidr" protobuf:"bytes,1,name=cidr"` |
| // Except is a slice of CIDRs that should not be included within an IP Block |
| // Valid examples are "192.168.1.1/24" |
| // Except values will be rejected if they are outside the CIDR range |
| // +optional |
| Except []string `json:"except,omitempty" protobuf:"bytes,2,rep,name=except"` |
| } |
| |
| // NetworkPolicyPeer describes a peer to allow traffic from. Only certain combinations of |
| // fields are allowed |
| type NetworkPolicyPeer struct { |
| // This is a label selector which selects Pods. This field follows standard label |
| // selector semantics; if present but empty, it selects all pods. |
| // |
| // If NamespaceSelector is also set, then the NetworkPolicyPeer as a whole selects |
| // the Pods matching PodSelector in the Namespaces selected by NamespaceSelector. |
| // Otherwise it selects the Pods matching PodSelector in the policy's own Namespace. |
| // +optional |
| PodSelector *metav1.LabelSelector `json:"podSelector,omitempty" protobuf:"bytes,1,opt,name=podSelector"` |
| |
| // Selects Namespaces using cluster-scoped labels. This field follows standard label |
| // selector semantics; if present but empty, it selects all namespaces. |
| // |
| // If PodSelector is also set, then the NetworkPolicyPeer as a whole selects |
| // the Pods matching PodSelector in the Namespaces selected by NamespaceSelector. |
| // Otherwise it selects all Pods in the Namespaces selected by NamespaceSelector. |
| // +optional |
| NamespaceSelector *metav1.LabelSelector `json:"namespaceSelector,omitempty" protobuf:"bytes,2,opt,name=namespaceSelector"` |
| |
| // IPBlock defines policy on a particular IPBlock. If this field is set then |
| // neither of the other fields can be. |
| // +optional |
| IPBlock *IPBlock `json:"ipBlock,omitempty" protobuf:"bytes,3,rep,name=ipBlock"` |
| } |
| |
| // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object |
| |
| // NetworkPolicyList is a list of NetworkPolicy objects. |
| type NetworkPolicyList struct { |
| metav1.TypeMeta `json:",inline"` |
| // Standard list metadata. |
| // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata |
| // +optional |
| metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"` |
| |
| // Items is a list of schema objects. |
| Items []NetworkPolicy `json:"items" protobuf:"bytes,2,rep,name=items"` |
| } |