Add simple language detection and have build for golang projects

deploy.go

@@ -5,29 +5,23 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
-	"text/template"
 
 	"gofr.dev/pkg/gofr"
 
-	"kops.dev/internal/templates"
-)
-
-const (
-	golang = "golang"
-	java   = "java"
-	js     = "js"
+	"kops.dev/internal/build"
+	"kops.dev/internal/file"
 )
 
 var (
-	errDepKeyNotProvided = errors.New("KOPS_DEPLOYMENT_KEY not provided, " +
-		"please download the key form https://kops.dev")
 	errLanguageNotProvided = errors.New("unable to create DockerFile as project " +
 		"programming language not provided. Please Provide a programming language using -lang=<language>")
-	errLanguageNotSupported = errors.New("creating DockerFile for provided language is not supported yet")
+	errDepKeyNotProvided = errors.New("KOPS_DEPLOYMENT_KEY not provided, " +
+		"please download the key form https://kops.dev")
 )
 
 func Deploy(ctx *gofr.Context) (interface{}, error) {
+	var lang, port string
+
 	keyFile := os.Getenv("KOPS_DEPLOYMENT_KEY")
 	if keyFile == "" {
 		return nil, errDepKeyNotProvided
@@ -39,102 +33,42 @@ func Deploy(ctx *gofr.Context) (interface{}, error) {
 		return nil, err
 	}
 
-	fi, _ := os.Stat("Dockerfile")
-	if fi != nil {
-		fmt.Println("Dockerfile present, using already created dockerfile")
-	} else {
-		if err := createDockerFile(ctx); err != nil {
-			return nil, err
-		}
-	}
-
-	// TODO: build and push the docker image to the Kops API
-	// Also need to figure out the contract for the API
-
-	return "Successful", nil
-}
-
-func createDockerFile(ctx *gofr.Context) error {
-	var content, lang, port string
-
 	// removing the cloud-specific logic from cli to hosted service
 	lang = ctx.Param("lang")
 	if lang == "" {
-		lang = detect()
+		lang = file.Detect()
 		if lang == "" {
 			ctx.Logger.Errorf("%v", errLanguageNotProvided)
 
-			return errLanguageNotProvided
+			return nil, errLanguageNotProvided
 		}
 
-		fmt.Println("detected language is", lang)
+		fmt.Println("Detected language is", lang)
 	}
 
 	port = ctx.Param("p")
 	if port == "" {
 		port = "8000"
 	}
 
-	// get the template content for dockerFile based on the language
-	switch strings.ToLower(lang) {
-	case golang:
-		content = templates.Golang
-	case java:
-		content = templates.Java
-	case js:
-		content = templates.Js
-	default:
-		ctx.Logger.Errorf("creating DockerFile for %s is not supported yet,"+
-			" reach us at https://github.com/kops-dev/kops-cli/issues to know more", lang)
-
-		fmt.Printf("creating DockerFile for %s is not supported yet, "+
-			"reach us at https://github.com/kops-dev/kops-cli/issues to know more\n", lang)
-		fmt.Println("you can create your own DockerFile and run the kops-cli again.")
-
-		return errLanguageNotSupported
-	}
-
-	file, err := os.Create("Dockerfile")
-	if err != nil {
-		return err
+	fi, _ := os.Stat("Dockerfile")
+	if fi != nil {
+		fmt.Println("Dockerfile present, using already created dockerfile")
+	} else {
+		if er := file.CreateDockerFile(ctx, lang, port); er != nil {
+			return nil, er
+		}
 	}
 
-	defer file.Close()
-
-	t := template.New(lang)
-
-	temp, err := t.Parse(content)
+	// Build the binary based on the language detected or provided by user
+	err = build.Build(lang)
 	if err != nil {
-		return err
-	}
+		ctx.Logger.Errorf("error building for %v, error : %v", lang, err)
 
-	if er := temp.Execute(file, port); er != nil {
-		ctx.Logger.Error("error while creating DockerFile", er)
-		fmt.Println("unable to create the DockerFile, please check permissions for creating files in the directory")
-
-		return er
-	}
-
-	return nil
-}
-
-func detect() string {
-	switch {
-	case checkFile("go.mod"):
-		return golang
-	case checkFile("package.json"):
-		return js
-	case checkFile("pom.xml") || checkFile("build.gradle"):
-		return java
+		return nil, err
 	}
 
-	return ""
-}
+	// TODO: Need to figure out the contract for the API
 
-func checkFile(fileName string) bool {
-	if _, err := os.Stat(fileName); err != nil {
-		return false
-	}
-
-	return true
+	return "Successful", nil
 }

go.mod

@@ -2,7 +2,10 @@ module kops.dev
 
 go 1.22
 
-require gofr.dev v1.15.0
+require (
+	github.com/stretchr/testify v1.9.0
+	gofr.dev v1.15.0
+)
 
 require (
 	cloud.google.com/go v0.115.0 // indirect
@@ -17,6 +20,7 @@ require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/eclipse/paho.mqtt.golang v1.4.3 // indirect
@@ -46,6 +50,7 @@ require (
 	github.com/openzipkin/zipkin-go v0.4.3 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.19.1 // indirect
 	github.com/prometheus/client_model v0.6.1 // indirect
 	github.com/prometheus/common v0.55.0 // indirect
@@ -84,6 +89,7 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240708141625-4ad9e859172b // indirect
 	google.golang.org/grpc v1.65.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 	modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
 	modernc.org/libc v1.52.1 // indirect
 	modernc.org/mathutil v1.6.0 // indirect

go.sum

@@ -128,8 +128,12 @@ github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0N
 github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
@@ -167,6 +171,8 @@ github.com/redis/go-redis/v9 v9.5.4 h1:vOFYDKKVgrI5u++QvnMT7DksSMYg7Aw/Np4vLJLKL
 github.com/redis/go-redis/v9 v9.5.4/go.mod h1:hdY0cQFCN4fnSYT6TkisLufl/4W5UIXyv0b/CLO2V2M=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
+github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/segmentio/kafka-go v0.4.47 h1:IqziR4pA3vrZq7YdRxaT3w1/5fvIH5qpCwstUanQQB0=
 github.com/segmentio/kafka-go v0.4.47/go.mod h1:HjF6XbOKh0Pjlkr5GVZxt6CsjjwnmhVOfURM5KMd8qg=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
@@ -368,6 +374,8 @@ google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6h
 google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/build/build.go

@@ -0,0 +1,45 @@
+package build
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+const (
+	golang = "golang"
+	java   = "java"
+	js     = "js"
+)
+
+// TODO: For every language support do we need to check if that language's compiler exists in the system.
+// support - 1. golang(done)    2. Javascript      3. Java
+
+func Build(lang string) error {
+	switch lang {
+	case golang:
+		return buildGolang()
+	case js:
+		// TODO: necessary steps for javascript build
+		break
+	case java:
+		// TODO: necessary steps for building java projects
+		break
+	}
+
+	return nil
+}
+
+func buildGolang() error {
+	fmt.Println("Creating binary for the project")
+
+	output, err := exec.Command("sh", "-c", "CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o main .").CombinedOutput()
+	if err != nil {
+		fmt.Println("error occurred while creating binary!", output)
+
+		return err
+	}
+
+	fmt.Println("Binary created successfully")
+
+	return nil
+}

internal/file/detection.go

@@ -0,0 +1,30 @@
+package file
+
+import "os"
+
+const (
+	golang = "golang"
+	java   = "java"
+	js     = "js"
+)
+
+func Detect() string {
+	switch {
+	case checkFile("go.mod"):
+		return golang
+	case checkFile("package.json"):
+		return js
+	case checkFile("pom.xml") || checkFile("build.gradle"):
+		return java
+	}
+
+	return ""
+}
+
+func checkFile(fileName string) bool {
+	if _, err := os.Stat(fileName); err != nil {
+		return false
+	}
+
+	return true
+}

internal/file/detection_test.go

@@ -0,0 +1,52 @@
+package file
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_DetectGolang(t *testing.T) {
+	f, err := os.Create("go.mod")
+	if err != nil {
+		t.Errorf("error creating go.mod file, err : %v", err)
+	}
+
+	defer os.Remove(f.Name())
+
+	out := Detect()
+
+	assert.Equal(t, golang, out)
+}
+
+func Test_DetectJavaScript(t *testing.T) {
+	f, err := os.Create("package.json")
+	if err != nil {
+		t.Errorf("error creating go.mod file, err : %v", err)
+	}
+
+	defer os.Remove(f.Name())
+
+	out := Detect()
+
+	assert.Equal(t, js, out)
+}
+
+func Test_DetectJava(t *testing.T) {
+	f, err := os.Create("pom.xml")
+	if err != nil {
+		t.Errorf("error creating go.mod file, err : %v", err)
+	}
+
+	defer os.Remove(f.Name())
+
+	out := Detect()
+
+	assert.Equal(t, java, out)
+}
+
+func Test_DetectFail(t *testing.T) {
+	out := Detect()
+	assert.Equal(t, "", out)
+}