114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
/*
|
|
Copyright 2016 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 kubectl
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/kubernetes/pkg/api"
|
|
"k8s.io/kubernetes/pkg/apis/extensions"
|
|
)
|
|
|
|
// DeploymentGeneratorV1 supports stable generation of a deployment
|
|
type DeploymentBasicGeneratorV1 struct {
|
|
Name string
|
|
Images []string
|
|
}
|
|
|
|
// Ensure it supports the generator pattern that uses parameters specified during construction
|
|
var _ StructuredGenerator = &DeploymentBasicGeneratorV1{}
|
|
|
|
func (DeploymentBasicGeneratorV1) ParamNames() []GeneratorParam {
|
|
return []GeneratorParam{
|
|
{"name", true},
|
|
{"image", true},
|
|
}
|
|
}
|
|
|
|
func (s DeploymentBasicGeneratorV1) Generate(params map[string]interface{}) (runtime.Object, error) {
|
|
err := ValidateParams(s.ParamNames(), params)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
name, isString := params["name"].(string)
|
|
if !isString {
|
|
return nil, fmt.Errorf("expected string, saw %v for 'name'", name)
|
|
}
|
|
imageStrings, isArray := params["image"].([]string)
|
|
if !isArray {
|
|
return nil, fmt.Errorf("expected []string, found :%v", imageStrings)
|
|
}
|
|
delegate := &DeploymentBasicGeneratorV1{Name: name, Images: imageStrings}
|
|
return delegate.StructuredGenerate()
|
|
}
|
|
|
|
// StructuredGenerate outputs a deployment object using the configured fields
|
|
func (s *DeploymentBasicGeneratorV1) StructuredGenerate() (runtime.Object, error) {
|
|
if err := s.validate(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
podSpec := api.PodSpec{Containers: []api.Container{}}
|
|
for _, imageString := range s.Images {
|
|
// Retain just the image name
|
|
imageSplit := strings.Split(imageString, "/")
|
|
name := imageSplit[len(imageSplit)-1]
|
|
// Remove any tag or hash
|
|
if strings.Contains(name, ":") {
|
|
name = strings.Split(name, ":")[0]
|
|
} else if strings.Contains(name, "@") {
|
|
name = strings.Split(name, "@")[0]
|
|
}
|
|
podSpec.Containers = append(podSpec.Containers, api.Container{Name: name, Image: imageString})
|
|
}
|
|
|
|
// setup default label and selector
|
|
labels := map[string]string{}
|
|
labels["app"] = s.Name
|
|
selector := metav1.LabelSelector{MatchLabels: labels}
|
|
deployment := extensions.Deployment{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: s.Name,
|
|
Labels: labels,
|
|
},
|
|
Spec: extensions.DeploymentSpec{
|
|
Replicas: 1,
|
|
Selector: &selector,
|
|
Template: api.PodTemplateSpec{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Labels: labels,
|
|
},
|
|
Spec: podSpec,
|
|
},
|
|
},
|
|
}
|
|
return &deployment, nil
|
|
}
|
|
|
|
// validate validates required fields are set to support structured generation
|
|
func (s *DeploymentBasicGeneratorV1) validate() error {
|
|
if len(s.Name) == 0 {
|
|
return fmt.Errorf("name must be specified")
|
|
}
|
|
if len(s.Images) == 0 {
|
|
return fmt.Errorf("at least one image must be specified")
|
|
}
|
|
return nil
|
|
}
|