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112 lines
2.4 KiB
112 lines
2.4 KiB
package client
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import (
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"bytes"
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"fmt"
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"text/template"
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"github.com/Masterminds/sprig"
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"github.com/kubernetes/helm/pkg/kube"
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)
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// Installer installs tiller into Kubernetes
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//
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// See InstallYAML.
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type Installer struct {
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// Metadata holds any global metadata attributes for the resources
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Metadata map[string]interface{}
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// Tiller specific metadata
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Tiller map[string]interface{}
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}
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// NewInstaller creates a new Installer
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func NewInstaller() *Installer {
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return &Installer{
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Metadata: map[string]interface{}{},
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Tiller: map[string]interface{}{},
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}
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}
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// Install uses kubernetes client to install tiller
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//
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// Returns the string output received from the operation, and an error if the
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// command failed.
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//
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// If verbose is true, this will print the manifest to stdout.
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//
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// If createNS is true, this will also create the namespace.
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func (i *Installer) Install(verbose, createNS bool) error {
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var b bytes.Buffer
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// Add namespace
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if createNS {
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nstpl := template.New("namespace").Funcs(sprig.TxtFuncMap())
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if err := template.Must(nstpl.Parse(NamespaceYAML)).Execute(&b, i); err != nil {
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return err
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}
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}
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// Add main install YAML
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istpl := template.New("install").Funcs(sprig.TxtFuncMap())
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if err := template.Must(istpl.Parse(InstallYAML)).Execute(&b, i); err != nil {
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return err
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}
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if verbose {
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fmt.Println(b.String())
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}
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return kube.New(nil).Create(i.Tiller["Namespace"].(string), &b)
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}
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// NamespaceYAML is the installation for a namespace.
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const NamespaceYAML = `
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---{{$namespace := default "helm" .Tiller.Namespace}}
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apiVersion: v1
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kind: Namespace
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metadata:
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labels:
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app: helm
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name: helm-namespace
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name: {{$namespace}}
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`
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// InstallYAML is the installation YAML for DM.
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const InstallYAML = `
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---{{$namespace := default "helm" .Tiller.Namespace}}
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apiVersion: v1
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kind: ReplicationController
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metadata:
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labels:
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app: helm
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name: tiller
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name: tiller-rc
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namespace: {{$namespace}}
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spec:
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replicas: 1
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selector:
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app: helm
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name: tiller
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template:
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metadata:
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labels:
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app: helm
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name: tiller
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spec:
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containers:
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- env:
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- name: DEFAULT_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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image: {{default "gcr.io/kubernetes-helm/tiller:canary" .Tiller.Image}}
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name: tiller
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ports:
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- containerPort: 44134
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name: tiller
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imagePullPolicy: Always
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`
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