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ippool.go
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ippool.go
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// Copyright (c) 2017 Tigera, Inc. All rights reserved.
// 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 v3
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
apiv1 "github.com/projectcalico/libcalico-go/lib/apis/v1"
"github.com/projectcalico/libcalico-go/lib/selector"
)
const (
KindIPPool = "IPPool"
KindIPPoolList = "IPPoolList"
)
// +genclient
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// IPPool contains information about a IPPool resource.
type IPPool struct {
metav1.TypeMeta `json:",inline"`
// Standard object's metadata.
metav1.ObjectMeta `json:"metadata,omitempty"`
// Specification of the IPPool.
Spec IPPoolSpec `json:"spec,omitempty"`
}
// IPPoolSpec contains the specification for an IPPool resource.
type IPPoolSpec struct {
// The pool CIDR.
CIDR string `json:"cidr" validate:"net"`
// Contains configuration for VXLAN tunneling for this pool. If not specified,
// then this is defaulted to "Never" (i.e. VXLAN tunelling is disabled).
VXLANMode VXLANMode `json:"vxlanMode,omitempty" validate:"omitempty,vxlanMode"`
// Contains configuration for IPIP tunneling for this pool. If not specified,
// then this is defaulted to "Never" (i.e. IPIP tunelling is disabled).
IPIPMode IPIPMode `json:"ipipMode,omitempty" validate:"omitempty,ipIpMode"`
// When nat-outgoing is true, packets sent from Calico networked containers in
// this pool to destinations outside of this pool will be masqueraded.
NATOutgoing bool `json:"natOutgoing,omitempty"`
// When disabled is true, Calico IPAM will not assign addresses from this pool.
Disabled bool `json:"disabled,omitempty"`
// The block size to use for IP address assignments from this pool. Defaults to 26 for IPv4 and 112 for IPv6.
BlockSize int `json:"blockSize,omitempty"`
// Allows IPPool to allocate for a specific node by label selector.
NodeSelector string `json:"nodeSelector,omitempty" validate:"omitempty,selector"`
// Deprecated: this field is only used for APIv1 backwards compatibility.
// Setting this field is not allowed, this field is for internal use only.
IPIP *apiv1.IPIPConfiguration `json:"ipip,omitempty" validate:"omitempty,mustBeNil"`
// Deprecated: this field is only used for APIv1 backwards compatibility.
// Setting this field is not allowed, this field is for internal use only.
NATOutgoingV1 bool `json:"nat-outgoing,omitempty" validate:"omitempty,mustBeFalse"`
}
// SelectsNode determines whether or not the IPPool's nodeSelector
// matches the labels on the given node.
func (pool IPPool) SelectsNode(n Node) (bool, error) {
// No node selector means that the pool matches the node.
if len(pool.Spec.NodeSelector) == 0 {
return true, nil
}
// Check for valid selector syntax.
sel, err := selector.Parse(pool.Spec.NodeSelector)
if err != nil {
return false, err
}
// Return whether or not the selector matches.
return sel.Evaluate(n.Labels), nil
}
type VXLANMode string
const (
VXLANModeNever VXLANMode = "Never"
VXLANModeAlways = "Always"
VXLANModeCrossSubnet = "CrossSubnet"
)
type IPIPMode string
const (
IPIPModeNever IPIPMode = "Never"
IPIPModeAlways = "Always"
IPIPModeCrossSubnet = "CrossSubnet"
)
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// IPPoolList contains a list of IPPool resources.
type IPPoolList struct {
metav1.TypeMeta `json:",inline"`
metav1.ListMeta `json:"metadata"`
Items []IPPool `json:"items"`
}
// NewIPPool creates a new (zeroed) IPPool struct with the TypeMetadata initialised to the current
// version.
func NewIPPool() *IPPool {
return &IPPool{
TypeMeta: metav1.TypeMeta{
Kind: KindIPPool,
APIVersion: GroupVersionCurrent,
},
}
}
// NewIPPoolList creates a new (zeroed) IPPoolList struct with the TypeMetadata initialised to the current
// version.
func NewIPPoolList() *IPPoolList {
return &IPPoolList{
TypeMeta: metav1.TypeMeta{
Kind: KindIPPoolList,
APIVersion: GroupVersionCurrent,
},
}
}