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Add Kubernetes resources (#2236)
* Refact new command implementation Everytime I want to add or modify files in the new command, I will have to do so in 2 places. This change will consolidate functionality so there's only a single place to modify. * Move Kubernetes resources to its own file * Add Kubernetes resources
This commit is contained in:
Niek den Breeje
GitHub
parent
ed9053ed94
commit
993e2f55bd
@ -37,6 +37,102 @@ type file struct {
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Tmpl string
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}
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// NewCommand returns a new new cli command.
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func NewCommand() *cli.Command {
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return &cli.Command{
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Name: "new",
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Usage: "Create a project template",
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Subcommands: []*cli.Command{
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{
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Name: "function",
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Usage: "Create a function template, e.g. " + cmd.App().Name + " new function greeter",
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Action: Function,
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Flags: flags,
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},
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{
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Name: "service",
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Usage: "Create a service template, e.g. " + cmd.App().Name + " new service greeter",
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Action: Service,
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Flags: flags,
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},
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},
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}
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}
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// Function creates a new function project template. Exits on error.
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func Function(ctx *cli.Context) error {
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return createProject(ctx, true)
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}
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// Service creates a new service project template. Exits on error.
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func Service(ctx *cli.Context) error {
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return createProject(ctx, false)
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}
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func createProject(ctx *cli.Context, fn bool) error {
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name := ctx.Args().First()
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if len(name) == 0 {
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return cli.ShowSubcommandHelp(ctx)
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}
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if path.IsAbs(name) {
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fmt.Println("must provide a relative path as service name")
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return nil
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}
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if _, err := os.Stat(name); !os.IsNotExist(err) {
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return fmt.Errorf("%s already exists", name)
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}
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if fn {
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fmt.Printf("creating function %s\n", name)
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} else {
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fmt.Printf("creating service %s\n", name)
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}
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files := []file{
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{".dockerignore", tmpl.DockerIgnore},
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{".gitignore", tmpl.GitIgnore},
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{"Dockerfile", tmpl.Dockerfile},
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{"Makefile", tmpl.Makefile},
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{"go.mod", tmpl.Module},
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}
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if fn {
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files = append(files, []file{
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{"handler/" + name + ".go", tmpl.HandlerFNC},
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{"main.go", tmpl.MainFNC},
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{"proto/" + name + ".proto", tmpl.ProtoFNC},
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}...)
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} else {
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files = append(files, []file{
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{"handler/" + name + ".go", tmpl.HandlerSRV},
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{"main.go", tmpl.MainSRV},
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{"proto/" + name + ".proto", tmpl.ProtoSRV},
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}...)
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}
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if ctx.Bool("skaffold") {
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files = append(files, []file{
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{"plugins.go", tmpl.Plugins},
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{"resources/clusterrole.yaml", tmpl.KubernetesClusterRole},
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{"resources/configmap.yaml", tmpl.KubernetesEnv},
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{"resources/deployment.yaml", tmpl.KubernetesDeployment},
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{"resources/rolebinding.yaml", tmpl.KubernetesRoleBinding},
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{"skaffold.yaml", tmpl.SkaffoldCFG},
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}...)
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}
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c := config{
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Alias: name,
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Comments: protoComments(name),
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Dir: name,
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Jaeger: ctx.Bool("jaeger"),
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Skaffold: ctx.Bool("skaffold"),
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}
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return create(files, c)
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}
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func protoComments(alias string) []string {
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return []string{
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"\ndownload protoc zip packages (protoc-$VERSION-$PLATFORM.zip) and install:\n",
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@ -93,115 +189,3 @@ func create(files []file, c config) error {
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return nil
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}
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// NewCommand returns a new new cli command.
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func NewCommand() *cli.Command {
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return &cli.Command{
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Name: "new",
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Usage: "Create a project template",
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Subcommands: []*cli.Command{
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{
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Name: "function",
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Usage: "Create a function template, e.g. " + cmd.App().Name + " new function greeter",
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Action: Function,
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Flags: flags,
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},
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{
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Name: "service",
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Usage: "Create a service template, e.g. " + cmd.App().Name + " new service greeter",
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Action: Service,
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Flags: flags,
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},
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},
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}
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}
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// Function creates a new function project template. Exits on error.
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func Function(ctx *cli.Context) error {
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function := ctx.Args().First()
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if len(function) == 0 {
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return cli.ShowSubcommandHelp(ctx)
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}
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if path.IsAbs(function) {
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fmt.Println("must provide a relative path as function name")
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return nil
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}
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if _, err := os.Stat(function); !os.IsNotExist(err) {
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return fmt.Errorf("%s already exists", function)
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}
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fmt.Printf("creating function %s\n", function)
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files := []file{
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{".gitignore", tmpl.GitIgnore},
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{"Dockerfile", tmpl.Dockerfile},
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{"Makefile", tmpl.Makefile},
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{"go.mod", tmpl.Module},
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{"handler/" + function + ".go", tmpl.HandlerFNC},
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{"main.go", tmpl.MainFNC},
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{"proto/" + function + ".proto", tmpl.ProtoFNC},
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}
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if ctx.Bool("skaffold") {
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files = append(files, []file{
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{"skaffold.yaml", tmpl.SkaffoldCFG},
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{"resources/deployment.yaml", tmpl.SkaffoldDEP},
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}...)
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}
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c := config{
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Alias: function,
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Comments: protoComments(function),
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Dir: function,
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Jaeger: ctx.Bool("jaeger"),
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}
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return create(files, c)
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}
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// Service creates a new service project template. Exits on error.
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func Service(ctx *cli.Context) error {
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service := ctx.Args().First()
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if len(service) == 0 {
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return cli.ShowSubcommandHelp(ctx)
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}
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if path.IsAbs(service) {
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fmt.Println("must provide a relative path as service name")
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return nil
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}
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if _, err := os.Stat(service); !os.IsNotExist(err) {
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return fmt.Errorf("%s already exists", service)
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}
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fmt.Printf("creating service %s\n", service)
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files := []file{
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{".dockerignore", tmpl.DockerIgnore},
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{".gitignore", tmpl.GitIgnore},
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{"Dockerfile", tmpl.Dockerfile},
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{"Makefile", tmpl.Makefile},
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{"go.mod", tmpl.Module},
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{"handler/" + service + ".go", tmpl.HandlerSRV},
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{"main.go", tmpl.MainSRV},
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{"proto/" + service + ".proto", tmpl.ProtoSRV},
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}
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if ctx.Bool("skaffold") {
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files = append(files, []file{
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{"skaffold.yaml", tmpl.SkaffoldCFG},
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{"resources/deployment.yaml", tmpl.SkaffoldDEP},
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}...)
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}
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c := config{
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Alias: service,
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Comments: protoComments(service),
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Dir: service,
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Jaeger: ctx.Bool("jaeger"),
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Skaffold: ctx.Bool("skaffold"),
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}
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return create(files, c)
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}
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78
cmd/gomu/cmd/cli/new/template/kubernetes.go
Normal file
78
cmd/gomu/cmd/cli/new/template/kubernetes.go
Normal file
@ -0,0 +1,78 @@
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package template
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// KubernetesEnv is a Kubernetes configmap manifest template used for
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// environment variables in new projects.
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var KubernetesEnv = `---
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: {{.Alias}}-env
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data:
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MICRO_REGISTRY: kubernetes
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`
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// KubernetesClusterRole is a Kubernetes cluster role manifest template
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// required for the Kubernetes registry plugin to function correctly.
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var KubernetesClusterRole = `---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: micro-registry
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rules:
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- apiGroups:
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- ""
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resources:
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- pods
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verbs:
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- list
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- patch
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- watch
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`
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// KubernetesRoleBinding is a Kubernetes role binding manifest template
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// required for the Kubernetes registry plugin to function correctly.
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var KubernetesRoleBinding = `---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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name: micro-registry
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: micro-registry
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subjects:
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- kind: ServiceAccount
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name: default
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namespace: default
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`
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// KubernetesDeployment is a Kubernetes deployment manifest template used for
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// new projects.
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var KubernetesDeployment = `---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{.Alias}}
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labels:
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app: {{.Alias}}
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: {{.Alias}}
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template:
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metadata:
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labels:
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app: {{.Alias}}
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spec:
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containers:
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- name: {{.Alias}}
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image: {{.Alias}}:latest
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envFrom:
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- configMapRef:
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name: {{.Alias}}-env
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`
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9
cmd/gomu/cmd/cli/new/template/plugins.go
Normal file
9
cmd/gomu/cmd/cli/new/template/plugins.go
Normal file
@ -0,0 +1,9 @@
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package template
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// Plugins is the plugins template used for new projects.
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var Plugins = `package main
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import (
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_ "github.com/asim/go-micro/plugins/registry/kubernetes/v3"
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)
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`
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@ -15,28 +15,3 @@ deploy:
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manifests:
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- resources/*.yaml
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`
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// SkaffoldDEP is the Kubernetes deployment manifest template used for new
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// projects.
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var SkaffoldDEP = `---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{.Alias}}
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labels:
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app: {{.Alias}}
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: {{.Alias}}
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template:
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metadata:
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labels:
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app: {{.Alias}}
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spec:
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containers:
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- name: {{.Alias}}
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image: {{.Alias}}:latest
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`
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