/**
* Remove all members of the project from the dataset group.
*
* <p>
*
* @param project
* @param dataset
*/
public void unShareDataset(Project project, Dataset dataset) {
if (project == null || dataset == null) {
throw new IllegalArgumentException("One or more arguments are null.");
}
String datasetGroup = getHdfsGroupName(dataset);
byte[] groupId = UsersGroups.getGroupID(datasetGroup);
HdfsGroups hdfsGroup = hdfsGroupsFacade.findHdfsGroup(groupId);
if (hdfsGroup == null) {
throw new IllegalArgumentException("Dataset group not found");
}
if (hdfsGroup.getHdfsUsersCollection() == null) {
throw new IllegalArgumentException("The dataset group have no members.");
}
Collection<ProjectTeam> projectTeam = projectTeamFacade.findMembersByProject(project);
String hdfsUsername;
HdfsUsers hdfsUser;
byte[] userId;
// every member of the project the ds is going to be unshard from is
// removed from the dataset group.
for (ProjectTeam member : projectTeam) {
hdfsUsername = getHdfsUserName(project, member.getUser());
userId = UsersGroups.getUserID(hdfsUsername);
hdfsUser = hdfsUsersFacade.findHdfsUser(userId);
if (hdfsUser != null) {
hdfsGroup.getHdfsUsersCollection().remove(hdfsUser);
}
}
hdfsGroupsFacade.merge(hdfsGroup);
}
/**
* Adds all members of project to the dataset's group. This will give the added members read and
* execute privileges.
*
* <p>
*
* @param project
* @param dataset
*/
public void shareDataset(Project project, Dataset dataset) {
if (project == null || dataset == null) {
throw new IllegalArgumentException("One or more arguments are null.");
}
String datasetGroup = getHdfsGroupName(dataset);
byte[] groupId = UsersGroups.getGroupID(datasetGroup);
HdfsGroups hdfsGroup = hdfsGroupsFacade.findHdfsGroup(groupId);
if (hdfsGroup == null) {
throw new IllegalArgumentException("Dataset group not found");
}
if (hdfsGroup.getHdfsUsersCollection() == null) {
hdfsGroup.setHdfsUsersCollection(new ArrayList<HdfsUsers>());
}
Collection<ProjectTeam> projectTeam = projectTeamFacade.findMembersByProject(project);
String hdfsUsername;
HdfsUsers hdfsUser;
byte[] userId;
// every member of the project the ds is going to be shard with is
// added to the dataset group.
for (ProjectTeam member : projectTeam) {
hdfsUsername = getHdfsUserName(project, member.getUser());
userId = UsersGroups.getUserID(hdfsUsername);
hdfsUser = hdfsUsersFacade.findHdfsUser(userId);
if (hdfsUser == null) {
hdfsUser = new HdfsUsers(userId, hdfsUsername);
}
if (!hdfsGroup.getHdfsUsersCollection().contains(hdfsUser)) {
hdfsGroup.getHdfsUsersCollection().add(hdfsUser);
}
}
hdfsGroupsFacade.merge(hdfsGroup);
}