/
build.go
184 lines (145 loc) · 4.32 KB
/
build.go
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package main
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"strings"
"github.com/spf13/cobra"
"github.com/tomologic/wrench/config"
"github.com/tomologic/wrench/utils"
)
var flag_rebuild bool
func AddBuildToWrench(rootCmd *cobra.Command) {
var cmdBuild = &cobra.Command{
Use: "build",
Short: "Build docker image",
Long: `will build docker image for project`,
Run: func(cmd *cobra.Command, args []string) {
build()
},
}
cmdBuild.Flags().BoolVarP(&flag_rebuild, "rebuild", "r", false, "Force rebuild of image")
rootCmd.AddCommand(cmdBuild)
}
func build() {
image_name := config.GetProjectImage()
if !flag_rebuild && utils.DockerImageExists(image_name) {
fmt.Printf("INFO: Docker image %s already exists\n", image_name)
// Build test image if missing
if !utils.DockerImageExists(fmt.Sprintf("%s-test", image_name)) {
buildTest()
}
os.Exit(0)
}
if utils.FileExists("./Dockerfile.builder") {
buildBuilder()
buildTest()
} else if utils.FileExists("./Dockerfile") {
buildSimple()
buildTest()
} else {
fmt.Printf("ERROR: %s\n", "No Dockerfile found.")
os.Exit(1)
}
}
func buildBuilder() {
image_name := config.GetProjectImage()
builder_image_name := fmt.Sprintf("%s-builder", image_name)
fmt.Printf("INFO: %s %s\n\n",
"Found Dockerfile.builder, building image builder",
builder_image_name)
// Build builder image
cmd_string := fmt.Sprintf("docker build -f Dockerfile.builder -t '%s' .", builder_image_name)
cmd := exec.Command("sh", "-c", cmd_string)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
version := strings.TrimLeft(config.GetProjectVersion(), "v")
fmt.Printf("INFO: Adding env variable VERSION=%s\n\n", version)
utils.DockerImageAddEnv(builder_image_name, "VERSION", version)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Printf("\nINFO: %s %s\n\n",
"Building image with builder",
image_name)
// Build image
cmd_string = fmt.Sprintf("docker run --rm '%s' | docker build -t '%s' -", builder_image_name, image_name)
cmd = exec.Command("sh", "-c", cmd_string)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Printf("INFO: Adding env variable VERSION=%s\n\n", version)
utils.DockerImageAddEnv(image_name, "VERSION", version)
}
func buildSimple() {
image_name := config.GetProjectImage()
fmt.Printf("INFO: %s %s\n\n",
"Found Dockerfile, building image",
image_name)
cmd_string := fmt.Sprintf("docker build -t '%s' .", image_name)
cmd := exec.Command("sh", "-c", cmd_string)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
version := strings.TrimLeft(config.GetProjectVersion(), "v")
fmt.Printf("INFO: Adding env variable VERSION=%s\n\n", version)
utils.DockerImageAddEnv(image_name, "VERSION", version)
}
func buildTest() {
image_name := config.GetProjectImage()
test_image_name := fmt.Sprintf("%s-test", image_name)
if !utils.FileExists("./Dockerfile.test") {
return
}
fmt.Printf("INFO: %s %s\n\n",
"Found Dockerfile.test, building test image",
test_image_name)
dockerfile := utils.GetFileContent("./Dockerfile.test")
dockerfile_lines := strings.Split(dockerfile, "\n")
if !strings.HasPrefix(dockerfile_lines[0], "FROM") {
fmt.Println("ERROR: Missing FROM on first line in Dockerfile.test")
os.Exit(1)
}
// if FROM string subfix with builder then base on builder image
if strings.HasSuffix(dockerfile_lines[0], "builder") {
dockerfile_lines[0] = fmt.Sprintf("FROM %s-builder", image_name)
} else {
dockerfile_lines[0] = fmt.Sprintf("FROM %s", image_name)
}
temp_dockerfile_content := strings.Join(dockerfile_lines, "\n")
// Tempdir for building test image
dir, err := os.Getwd()
if err != nil {
fmt.Printf("ERROR: %s\n", err)
os.Exit(1)
}
tempdir, err := ioutil.TempDir(dir, ".wrench_build_")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer os.RemoveAll(tempdir)
temp_dockerfile := fmt.Sprintf("%s/Dockerfile.test", tempdir)
utils.WriteFileContent(temp_dockerfile, temp_dockerfile_content)
cmd_string := fmt.Sprintf("docker build -f %s -t '%s' .", temp_dockerfile, test_image_name)
cmd := exec.Command("sh", "-c", cmd_string)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
os.RemoveAll(tempdir)
fmt.Println(err)
os.Exit(1)
}
}