// ResolveJar get jar from 1. jar directory, 2. local repository, 3. maven repository
// then set jar into jar directory and return jar path
func (r *JarResolver) ResolveJar(artifact *Artifact) (string, error) {
utils.Log("info", fmt.Sprintf("Resolve jar: %+v", artifact))
// jar directory
jarPath, jarDirErr := r.JarDir.FindJarArtifact(artifact)
if jarDirErr == nil {
return jarPath, nil
}
utils.Log("debug", fmt.Sprintf("Could not find jar in jar directory: %+v", r.JarDir))
// local repository
path, localRepoErr := r.LocalRepo.FindJarArtifact(artifact)
if localRepoErr == nil {
// copy from local repo to jar directory
if jarPath, err := r.JarDir.CopyFile(path, artifact.JarFileName()); err == nil {
return jarPath, nil
}
}
utils.Log("debug", fmt.Sprintf("Could not find jar in local repository: %+v", r.LocalRepo))
// maven repository
content, mavenRepoErr := r.MavenRepo.DownloadJarArtifact(artifact)
if mavenRepoErr == nil {
return r.JarDir.WriteFile(content, artifact.JarFileName())
}
utils.Log("debug", fmt.Sprintf("Could not find jar in maven repository: %+v", r.MavenRepo))
return "", fmt.Errorf("Failed to resolve jar : [%v,%v,%v]", jarDirErr, localRepoErr, mavenRepoErr)
}
// FindJarArtifact get artifact file path in local storage
func (d *JarDirectory) FindJarArtifact(artifact *Artifact) (string, error) {
utils.Log("info", fmt.Sprintf("Try to find jar in jar directory: %+v", artifact))
path := fmt.Sprintf("%s/%s", d.Dir, artifact.JarFileName())
_, err := os.Stat(path)
if os.IsNotExist(err) {
return "", fmt.Errorf("Could not find jar in jar directory")
}
utils.Log("info", fmt.Sprintf("Found jar in jar directory: %s", path))
return path, nil
}
// FindJarArtifact get artifact file path in local storage
func (r *LocalRepository) FindJarArtifact(artifact *Artifact) (string, error) {
path := fmt.Sprintf("%s/%s/%s/%s/%s", r.Dir, artifact.GroupIDPath(), artifact.Name, artifact.Version, artifact.JarFileName())
utils.Log("info", fmt.Sprintf("Try to find jar in local repository: %s", path))
_, err := os.Stat(path)
if os.IsNotExist(err) {
return "", fmt.Errorf("Could not find local jar")
}
utils.Log("info", fmt.Sprintf("Found jar in local repository: %s", path))
return path, nil
}
// CopyFile copy path file to jar directory file
func (d *JarDirectory) CopyFile(path, filename string) (string, error) {
utils.Log("info", fmt.Sprintf("Copy file in jar directory: from %s", path))
data, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
return d.WriteFile(data, filename)
}
// WriteFile write data in jar directory file
func (d *JarDirectory) WriteFile(data []byte, filename string) (string, error) {
path := fmt.Sprintf("%s/%s", d.Dir, filename)
utils.Log("info", fmt.Sprintf("Write file in jar directory: %s", path))
if err := ioutil.WriteFile(path, data, 0644); err != nil {
return "", err
}
return path, nil
}
// LatestVersion find latest version of the artifact
func (r *MavenRepository) LatestVersion(artifact *Artifact) (version string, err error) {
metadataURL := fmt.Sprintf("%s/maven-metadata.xml", r.artifactURLBase(artifact))
utils.Log("info", fmt.Sprintf("Search latest version to %s: %+v", metadataURL, artifact))
content, err := ValidateDownload(metadataURL)
if err != nil {
return "", err
}
xmlPath := xmlpath.MustCompile(`/metadata/versioning/latest`)
root, err := xmlpath.Parse(bytes.NewReader(content))
if err != nil {
return "", err
}
if latestVersion, ok := xmlPath.String(root); ok {
utils.Log("info", fmt.Sprintf("Found latest version: %s", latestVersion))
return latestVersion, nil
}
return "", fmt.Errorf("Could not find latest version in %s", metadataURL)
}
func download(url string) ([]byte, error) {
utils.Log("debug", fmt.Sprintf("Try to download file: %s", url))
resp, err := http.Get(url)
if err != nil {
return []byte{}, err
}
defer resp.Body.Close()
return ioutil.ReadAll(resp.Body)
}
// ValidateDownload try to download file and validate checksum
func ValidateDownload(url string) ([]byte, error) {
utils.Log("info", fmt.Sprintf("Validate checksum: %s", url))
contents, err := download(url)
if err != nil {
return []byte{}, err
}
md5URL := url + ".md5"
if md5Response, err := download(md5URL); err == nil {
md5Checksum := md5.Sum(contents)
if hex.EncodeToString(md5Checksum[:]) == string(md5Response) {
return contents, nil
}
utils.Log("debug", fmt.Sprintf("Failed to validate md5 checksum: actual=%s, expected=%s", hex.EncodeToString(md5Checksum[:]), string(md5Response)))
}
sha1URL := url + ".sha1"
if sha1Response, err := download(sha1URL); err == nil {
sha1Checksum := sha1.Sum(contents)
if hex.EncodeToString(sha1Checksum[:]) == string(sha1Response) {
return contents, nil
}
utils.Log("debug", fmt.Sprintf("Failed to validate sha1 checksum: actual=%s, expected=%s", hex.EncodeToString(sha1Checksum[:]), string(sha1Response)))
}
return []byte{}, fmt.Errorf("Checksum validation failed for %s", url)
}
// DownloadJarArtifact try to download jar artifact into outputDir
func (r *MavenRepository) DownloadJarArtifact(artifact *Artifact) ([]byte, error) {
url := fmt.Sprintf("%s/%s/%s", r.artifactURLBase(artifact), artifact.Version, artifact.JarFileName())
utils.Log("info", fmt.Sprintf("Try to download jar: %s", url))
return ValidateDownload(url)
}
// Run generates a new cli project. It returns exit code
func (c *JarCommand) Run(args []string) int {
// options
var (
groupID string
artifactName string
version string
option string
argument string
jarDirectory string
)
uflag := flag.NewFlagSet("jar", flag.ContinueOnError)
uflag.Usage = func() { c.UI.Error(c.Help()) }
uflag.StringVar(&groupID, "groupId", "", "groupId")
uflag.StringVar(&groupID, "g", "", "groupId (short)")
uflag.StringVar(&artifactName, "artifact", "", "artifact")
uflag.StringVar(&artifactName, "a", "", "artifact (short)")
uflag.StringVar(&version, "version", "", "version")
uflag.StringVar(&version, "V", "", "version (short)")
uflag.StringVar(&option, "option", "", "option")
uflag.StringVar(&option, "o", "", "option (short)")
uflag.StringVar(&argument, "argument", "", "argument")
uflag.StringVar(&argument, "A", "", "argument (short)")
uflag.StringVar(&jarDirectory, "jarDir", "", "jarDir")
uflag.StringVar(&jarDirectory, "O", "", "jarDir (short)")
errR, errW := io.Pipe()
errScanner := bufio.NewScanner(errR)
uflag.SetOutput(errW)
go func() {
for errScanner.Scan() {
c.UI.Error(errScanner.Text())
}
}()
if err := uflag.Parse(args); err != nil {
c.UI.Error("Failed to parse arguments")
return ExitCodeFailed
}
parsedArgs := uflag.Args()
if len(parsedArgs) != 0 {
c.UI.Error(fmt.Sprintf("Invalid arguments: %s", strings.Join(parsedArgs, " ")))
c.UI.Error(c.Help())
return ExitCodeFailed
}
if groupID == "" {
c.UI.Error("Invalid arguments: -groupId is required")
c.UI.Error(c.Help())
return ExitCodeFailed
}
if artifactName == "" {
c.UI.Error("Invalid arguments: -artifact is required")
c.UI.Error(c.Help())
return ExitCodeFailed
}
if jarDirectory == "" {
if workDir, err := os.Getwd(); err == nil {
jarDirectory = workDir
} else {
c.UI.Error(err.Error())
return ExitCodeFailed
}
}
jarDir := &repository.JarDirectory{
Dir: jarDirectory,
}
mavenRepo := repository.NewMavenRepository()
localRepo, err := repository.NewLocalRepository()
if err != nil {
c.UI.Error(err.Error())
return ExitCodeFailed
}
artifact := &repository.Artifact{
GroupID: groupID,
Name: artifactName,
Version: version,
}
if artifact.Version == "" {
latestVersion, err := mavenRepo.LatestVersion(artifact)
if err != nil {
c.UI.Error(err.Error())
return ExitCodeFailed
}
artifact.Version = latestVersion
}
utils.Log("info", fmt.Sprintf("jarDir = %s", jarDir))
jarResolver := &repository.JarResolver{
JarDir: *jarDir,
LocalRepo: *localRepo,
MavenRepo: *mavenRepo,
}
jarPath, err := jarResolver.ResolveJar(artifact)
if err != nil {
c.UI.Error(err.Error())
return ExitCodeFailed
}
// run jar
// cmd := exec.Command("java", option, "-jar", jarPath, argument) // Error: Could not find or load main class ???
command := fmt.Sprintf("java %s -jar %s %s", option, jarPath, argument)
cmd := exec.Command("sh", "-c", command)
utils.Log("info", fmt.Sprintf("Exec jar: sh -c %s", cmd.Args))
stdoutPipe, err := cmd.StdoutPipe()
if err != nil {
c.UI.Error(err.Error())
return ExitCodeFailed
}
defer stdoutPipe.Close()
stderrPipe, err := cmd.StderrPipe()
if err != nil {
c.UI.Error(err.Error())
return ExitCodeFailed
}
defer stderrPipe.Close()
go io.Copy(os.Stdout, stdoutPipe)
go io.Copy(os.Stderr, stderrPipe)
cmd.Run()
return ExitCodeOK
}