vendor files

vendor/k8s.io/kubernetes/pkg/kubectl/deployment.go

@@ -0,0 +1,147 @@
+/*
+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"
+
+	appsv1beta1 "k8s.io/api/apps/v1beta1"
+	"k8s.io/api/core/v1"
+	extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+// BaseDeploymentGenerator: implement the common functionality of
+// DeploymentBasicGeneratorV1 and DeploymentBasicAppsGeneratorV1. To reduce
+// confusion, it's best to keep this struct in the same file as those
+// generators.
+type BaseDeploymentGenerator struct {
+	Name   string
+	Images []string
+}
+
+// validate: check if the caller has forgotten to set one of our fields.
+func (b BaseDeploymentGenerator) validate() error {
+	if len(b.Name) == 0 {
+		return fmt.Errorf("name must be specified")
+	}
+	if len(b.Images) == 0 {
+		return fmt.Errorf("at least one image must be specified")
+	}
+	return nil
+}
+
+// structuredGenerate: determine the fields of a deployment. The struct that
+// embeds BaseDeploymentGenerator should assemble these pieces into a
+// runtime.Object.
+func (b BaseDeploymentGenerator) structuredGenerate() (
+	podSpec v1.PodSpec,
+	labels map[string]string,
+	selector metav1.LabelSelector,
+	err error,
+) {
+	err = b.validate()
+	if err != nil {
+		return
+	}
+	podSpec = buildPodSpec(b.Images)
+	labels = map[string]string{}
+	labels["app"] = b.Name
+	selector = metav1.LabelSelector{MatchLabels: labels}
+	return
+}
+
+// buildPodSpec: parse the image strings and assemble them into the Containers
+// of a PodSpec. This is all you need to create the PodSpec for a deployment.
+func buildPodSpec(images []string) v1.PodSpec {
+	podSpec := v1.PodSpec{Containers: []v1.Container{}}
+	for _, imageString := range 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, v1.Container{Name: name, Image: imageString})
+	}
+	return podSpec
+}
+
+// DeploymentBasicGeneratorV1 supports stable generation of a deployment
+type DeploymentBasicGeneratorV1 struct {
+	BaseDeploymentGenerator
+}
+
+// Ensure it supports the generator pattern that uses parameters specified during construction
+var _ StructuredGenerator = &DeploymentBasicGeneratorV1{}
+
+// StructuredGenerate outputs a deployment object using the configured fields
+func (s *DeploymentBasicGeneratorV1) StructuredGenerate() (runtime.Object, error) {
+	podSpec, labels, selector, err := s.structuredGenerate()
+	one := int32(1)
+	return &extensionsv1beta1.Deployment{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:   s.Name,
+			Labels: labels,
+		},
+		Spec: extensionsv1beta1.DeploymentSpec{
+			Replicas: &one,
+			Selector: &selector,
+			Template: v1.PodTemplateSpec{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: labels,
+				},
+				Spec: podSpec,
+			},
+		},
+	}, err
+}
+
+// DeploymentBasicAppsGeneratorV1 supports stable generation of a deployment under apps/v1beta1 endpoint
+type DeploymentBasicAppsGeneratorV1 struct {
+	BaseDeploymentGenerator
+}
+
+// Ensure it supports the generator pattern that uses parameters specified during construction
+var _ StructuredGenerator = &DeploymentBasicAppsGeneratorV1{}
+
+// StructuredGenerate outputs a deployment object using the configured fields
+func (s *DeploymentBasicAppsGeneratorV1) StructuredGenerate() (runtime.Object, error) {
+	podSpec, labels, selector, err := s.structuredGenerate()
+	one := int32(1)
+	return &appsv1beta1.Deployment{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:   s.Name,
+			Labels: labels,
+		},
+		Spec: appsv1beta1.DeploymentSpec{
+			Replicas: &one,
+			Selector: &selector,
+			Template: v1.PodTemplateSpec{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: labels,
+				},
+				Spec: podSpec,
+			},
+		},
+	}, err
+}