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calico.go
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calico.go
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/*
Copyright 2020 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 components
import (
"k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/upup/pkg/fi/loader"
)
// CalicoOptionsBuilder prepares settings related to the Calico CNI implementation.
type CalicoOptionsBuilder struct {
Context *OptionsContext
}
var _ loader.OptionsBuilder = &CalicoOptionsBuilder{}
func (b *CalicoOptionsBuilder) BuildOptions(o interface{}) error {
clusterSpec := o.(*kops.ClusterSpec)
c := clusterSpec.Networking.Calico
if c == nil {
return nil
}
rebindIfEmpty := func(s *string, replacement string) bool {
if *s != "" {
return false
}
*s = replacement
return true
}
activeMode := "Always"
if c.CrossSubnet {
activeMode = "CrossSubnet"
}
switch c.EncapsulationMode {
case "":
c.EncapsulationMode = "ipip"
fallthrough
case "ipip":
rebindIfEmpty(&c.IPIPMode, activeMode)
case "vxlan":
rebindIfEmpty(&c.IPIPMode, "Never")
}
return nil
}