How to use

EntityImpersonator

in

co.cask.cdap.security.impersonation

private Instantiators(ArtifactDescriptor parentArtifactDescriptor) throws Exception {
 // todo : shouldn't pass null, should use ArtifactId instead of ArtifactDescriptor so we have namespace.
 this.parentClassLoader =
  authArtifactRepository.createArtifactClassLoader(
   // todo : should not pass null, (Temporary)
   // change Instantiators to accept ArtifactId instead of ArtifactDescriptor
   parentArtifactDescriptor.getLocation(), new EntityImpersonator(null, impersonator));
 this.instantiatorInfoMap = new ConcurrentHashMap<>();
 this.pluginDir = DirUtils.createTempDir(stageDir);
}

private Location copyFileToDestination(final Id.Artifact artifactId,
                    File artifactContent,
                    EntityImpersonator entityImpersonator) throws Exception {
 return entityImpersonator.impersonate(() -> copyFile(artifactId, artifactContent));
}

new EntityImpersonator(artifactId.toEntityId(), impersonator).impersonate(new Callable<Void>() {
 @Override
 public Void call() throws Exception {

new EntityImpersonator(artifactId.toEntityId(), impersonator).impersonate(new Callable<Void>() {
 @Override
 public Void call() throws Exception {

private Instantiators(ArtifactDescriptor parentArtifactDescriptor) throws Exception {
 // todo : shouldn't pass null, should use ArtifactId instead of ArtifactDescriptor so we have namespace.
 this.parentClassLoader =
  authArtifactRepository.createArtifactClassLoader(
   // todo : should not pass null, (Temporary)
   // change Instantiators to accept ArtifactId instead of ArtifactDescriptor
   parentArtifactDescriptor.getLocation(), new EntityImpersonator(null, impersonator));
 this.instantiatorInfoMap = new ConcurrentHashMap<>();
 this.pluginDir = DirUtils.createTempDir(stageDir);
}

private Location copyFileToDestination(final Id.Artifact artifactId,
                    final InputSupplier<? extends InputStream> artifactContentSupplier,
                    EntityImpersonator entityImpersonator) throws Exception {
 return entityImpersonator.impersonate(() -> copyFile(artifactId, artifactContentSupplier));
}

EntityImpersonator entityImpersonator = new EntityImpersonator(artifactId.toEntityId(),
                                impersonator);
if (!parentArtifacts.isEmpty()) {

                       EntityImpersonator entityImpersonator) throws IOException {
try {
 final File unpackDir = entityImpersonator.impersonate(new Callable<File>() {
  @Override
  public File call() throws IOException {

EntityImpersonator entityImpersonator = new EntityImpersonator(artifactId.toEntityId(),
                                impersonator);
if (!parentArtifacts.isEmpty()) {

                       EntityImpersonator entityImpersonator) throws IOException {
try {
 final File unpackDir = entityImpersonator.impersonate(new Callable<File>() {
  @Override
  public File call() throws IOException {

 private void writeArtifact(Id.Artifact artifactId, ArtifactMeta meta, String contents)
  throws ArtifactAlreadyExistsException, IOException, WriteConflictException {

  File artifactFile = TEMP_FOLDER.newFile();
  Files.write(artifactFile.toPath(), Bytes.toBytes(contents));

  artifactStore.write(artifactId, meta, artifactFile,
            new EntityImpersonator(artifactId.toEntityId(),
                        new DefaultImpersonator(CConfiguration.create(), null)));
 }
}

final File unpackDir = entityImpersonator.impersonate(new Callable<File>() {
 @Override
 public File call() throws IOException {

@Test(expected = InvalidArtifactException.class)
public void testInvalidConfigApp() throws Exception {
 Manifest manifest = new Manifest();
 File appFile =
  createJar(InvalidConfigApp.class, new File(TMP_FOLDER.newFolder(), "InvalidConfigApp-1.0.0.jar"), manifest);
 Id.Artifact artifactId = Id.Artifact.from(Id.Namespace.DEFAULT, "InvalidConfigApp", "1.0.0");
 Location artifactLocation = Locations.toLocation(appFile);
 try (CloseableClassLoader artifactClassLoader =
     classLoaderFactory.createClassLoader(
      ImmutableList.of(artifactLocation).iterator(),
      new EntityImpersonator(artifactId.toEntityId(), new DefaultImpersonator(CConfiguration.create(), null)))) {
  artifactInspector.inspectArtifact(artifactId, appFile, artifactClassLoader);
 }
}

final File unpackDir = entityImpersonator.impersonate(new Callable<File>() {
 @Override
 public File call() throws IOException {

classLoaderFactory.createClassLoader(
 ImmutableList.of(artifactLocation).iterator(),
 new EntityImpersonator(artifactId.toEntityId(), new DefaultImpersonator(CConfiguration.create(), null)))) {

    appJar, new EntityImpersonator(artifactId.getNamespace().toEntityId(),
                   new DefaultImpersonator(cConf, null)))) {
Configurator configuratorWithConfig =

 new EntityImpersonator(artifactId, impersonator);
ClassLoader artifactClassLoader = artifactRepository.createArtifactClassLoader(artifactLocation,
                                        classLoaderImpersonator);

 new EntityImpersonator(artifactId, impersonator);
ClassLoader artifactClassLoader = artifactRepository.createArtifactClassLoader(artifactLocation,
                                        classLoaderImpersonator);

    appJar, new EntityImpersonator(artifactId.getNamespace().toEntityId(),
                   new DefaultImpersonator(cConf, null)))) {
Configurator configurator = new InMemoryConfigurator(conf, Id.Namespace.DEFAULT, artifactId,