DD command implemented

Author: WoodProgrammer

main.go

@@ -12,15 +12,29 @@ func newBuildClient() src.Builder {
 func newParserClient() src.Parser {
 	return &src.ParseHandler{}
 }
+
+func newRootFSClient() src.RootFS {
+	return &src.RootFSHandler{}
+}
 func main() {
-	parserCli := newParserClient()
-	buildCLi := newBuildClient()
+	parserClient := newParserClient()
+	buildCLient := newBuildClient()
+	rootFsClient := newRootFSClient()
 
-	result, err := parserCli.ParseYamlFile("config.yaml")
+	result, err := parserClient.ParseYamlFile("config.yaml")
 	if err != nil {
 		log.Err(err).Msg("Error while running parserCli.ParseYamlFile()")
 	}
 
-	buildCLi.BuildExportDockerImage(result.Context, result.DockerfilePath, result.TargetDirectory)
+	err = buildCLient.BuildExportDockerImage(result.Context, result.DockerfilePath, result.TargetDirectory)
+	if err != nil {
+		log.Err(err).Msg("Error while running buildCLient.BuildExportDockerImage()")
+	}
+
+	err = rootFsClient.CreateFileDD(10, "ops")
+	if err != nil {
+		log.Err(err).Msg("Error while running rootFsClient.CreateFileDD()")
+	}
+	// Extract rootfs components now
 
 }

src/container.go

@@ -17,7 +17,7 @@ func (buildClient *BuildHandler) BuildExportDockerImage(context, dockerFile, tar
 
 	output, err := cmd.CombinedOutput()
 	if err != nil {
-		log.Err(err).Msg("docker buildx error :")
+		log.Err(err).Msgf("docker buildx error : %s", output)
 		return err
 	}
 	log.Info().Msgf("Build Result %s", string(output))

src/rootfs.go

@@ -0,0 +1,37 @@
+package src
+
+import (
+	"os"
+
+	"github.com/rs/zerolog/log"
+)
+
+type RootFS interface {
+	CreateFileDD(size int64, fileName string) error
+}
+
+type RootFSHandler struct{}
+
+func (rootfs *RootFSHandler) CreateFileDD(size int64, fileName string) error {
+
+	size = int64(size * 1024 * 1024) // in MiB files
+
+	file, err := os.Create(fileName)
+	if err != nil {
+		log.Err(err).Msg("Error creating file:")
+		return err
+	}
+	defer file.Close()
+
+	zeroBlock := make([]byte, 1024*1024) // 1 MiB bufferred files in there
+	for i := 0; i < 50; i++ {
+		_, err := file.Write(zeroBlock)
+		if err != nil {
+			log.Err(err).Msg("Error writing to file:")
+			return err
+		}
+	}
+
+	log.Info().Msg("rootfs.ext4 created successfully")
+	return nil
+}