forked from virtual-kubelet/virtual-kubelet
/
node.go
110 lines (97 loc) · 3.33 KB
/
node.go
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// Copyright © 2017 The virtual-kubelet 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 root
import (
"context"
"strings"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/providers"
"github.com/virtual-kubelet/virtual-kubelet/version"
corev1 "k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
var (
// vkVersion is a concatenation of the Kubernetes version the VK is built against, the string "vk" and the VK release version.
// TODO @pires revisit after VK 1.0 is released as agreed in https://github.com/virtual-kubelet/virtual-kubelet/pull/446#issuecomment-448423176.
vkVersion = strings.Join([]string{"v1.13.1", "vk", version.Version}, "-")
)
// NodeFromProvider builds a kubernetes node object from a provider
// This is a temporary solution until node stuff actually split off from the provider interface itself.
func NodeFromProvider(ctx context.Context, name string, taint *v1.Taint, p providers.Provider) *v1.Node {
taints := make([]v1.Taint, 0)
if taint != nil {
taints = append(taints, *taint)
}
node := &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Labels: map[string]string{
"type": "virtual-kubelet",
"kubernetes.io/role": "agent",
"beta.kubernetes.io/os": strings.ToLower(p.OperatingSystem()),
"kubernetes.io/hostname": name,
"alpha.service-controller.kubernetes.io/exclude-balancer": "true",
},
},
Spec: v1.NodeSpec{
Taints: taints,
},
Status: v1.NodeStatus{
NodeInfo: v1.NodeSystemInfo{
OperatingSystem: p.OperatingSystem(),
Architecture: "amd64",
KubeletVersion: vkVersion,
},
Capacity: p.Capacity(ctx),
Allocatable: p.Capacity(ctx),
Conditions: p.NodeConditions(ctx),
Addresses: p.NodeAddresses(ctx),
DaemonEndpoints: *p.NodeDaemonEndpoints(ctx),
},
}
return node
}
// getTaint creates a taint using the provided key/value.
// Taint effect is read from the environment
// The taint key/value may be overwritten by the environment.
func getTaint(c Opts) (*corev1.Taint, error) {
value := c.Provider
key := c.TaintKey
if key == "" {
key = DefaultTaintKey
}
if c.TaintEffect == "" {
c.TaintEffect = DefaultTaintEffect
}
key = getEnv("VKUBELET_TAINT_KEY", key)
value = getEnv("VKUBELET_TAINT_VALUE", value)
effectEnv := getEnv("VKUBELET_TAINT_EFFECT", string(c.TaintEffect))
var effect corev1.TaintEffect
switch effectEnv {
case "NoSchedule":
effect = corev1.TaintEffectNoSchedule
case "NoExecute":
effect = corev1.TaintEffectNoExecute
case "PreferNoSchedule":
effect = corev1.TaintEffectPreferNoSchedule
default:
return nil, errdefs.InvalidInputf("taint effect %q is not supported", effectEnv)
}
return &corev1.Taint{
Key: key,
Value: value,
Effect: effect,
}, nil
}