support k8s deployment yaml generation (#247)

* simplify code, format makefile

* simplify code

* some optimize by kevwan and benying (#240)

Co-authored-by: 杨志泉 <zhiquan.yang@yiducloud.cn>

* optimization (#241)

* optimize docker file generation, make docker build faster

* support k8s deployment yaml generation

Co-authored-by: benying <31179034+benyingY@users.noreply.github.com>
Co-authored-by: 杨志泉 <zhiquan.yang@yiducloud.cn>
Co-authored-by: bittoy <bittoy@qq.com>

tools/goctl/kube/kube.go

@@ -0,0 +1,104 @@
+package kube
+
+import (
+	"errors"
+	"text/template"
+
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+	"github.com/urfave/cli"
+)
+
+const (
+	category           = "kube"
+	deployTemplateFile = "deployment.tpl"
+	jobTemplateFile    = "job.tpl"
+	basePort           = 30000
+	portLimit          = 32767
+)
+
+var errUnknownServiceType = errors.New("unknown service type")
+
+type (
+	ServiceType string
+
+	KubeRequest struct {
+		Env                        string
+		ServiceName                string
+		ServiceType                ServiceType
+		Namespace                  string
+		Schedule                   string
+		Replicas                   int
+		RevisionHistoryLimit       int
+		Port                       int
+		LimitCpu                   int
+		LimitMem                   int
+		RequestCpu                 int
+		RequestMem                 int
+		SuccessfulJobsHistoryLimit int
+		HpaMinReplicas             int
+		HpaMaxReplicas             int
+	}
+
+	Deployment struct {
+		Name        string
+		Namespace   string
+		Image       string
+		Secret      string
+		Replicas    int
+		Revisions   int
+		Port        int
+		NodePort    int
+		UseNodePort bool
+		RequestCpu  int
+		RequestMem  int
+		LimitCpu    int
+		LimitMem    int
+		MinReplicas int
+		MaxReplicas int
+	}
+)
+
+func DeploymentCommand(c *cli.Context) error {
+	nodePort := c.Int("nodePort")
+	// 0 to disable the nodePort type
+	if nodePort != 0 && (nodePort < basePort || nodePort > portLimit) {
+		return errors.New("nodePort should be between 30000 and 32767")
+	}
+
+	text, err := util.LoadTemplate(category, deployTemplateFile, deploymentTemplate)
+	if err != nil {
+		return err
+	}
+
+	out, err := util.CreateIfNotExist(c.String("o"))
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	t := template.Must(template.New("deploymentTemplate").Parse(text))
+	return t.Execute(out, Deployment{
+		Name:        c.String("name"),
+		Namespace:   c.String("namespace"),
+		Image:       c.String("image"),
+		Secret:      c.String("secret"),
+		Replicas:    c.Int("replicas"),
+		Revisions:   c.Int("revisions"),
+		Port:        c.Int("port"),
+		NodePort:    nodePort,
+		UseNodePort: nodePort > 0,
+		RequestCpu:  c.Int("requestCpu"),
+		RequestMem:  c.Int("requestMem"),
+		LimitCpu:    c.Int("limitCpu"),
+		LimitMem:    c.Int("limitMem"),
+		MinReplicas: c.Int("minReplicas"),
+		MaxReplicas: c.Int("maxReplicas"),
+	})
+}
+
+func GenTemplates(_ *cli.Context) error {
+	return util.InitTemplates(category, map[string]string{
+		deployTemplateFile: deploymentTemplate,
+		jobTemplateFile:    jobTmeplate,
+	})
+}