public Problem[] getProblemsForUser(Course course, int userId)
throws CloudCoderAuthenticationException {
// Make sure user is authenticated
User user = Database.getInstance().getUserGivenId(userId);
List<Problem> resultList =
Database.getInstance().getProblemsInCourse(user, course).getProblemList();
for (Problem p : resultList) {
logger.warn(p.getTestname() + " - " + p.getBriefDescription());
}
return resultList.toArray(new Problem[resultList.size()]);
}
@Override
public Problem[] getProblems(Course course) throws CloudCoderAuthenticationException {
// Make sure user is authenticated
User user =
ServletUtil.checkClientIsAuthenticated(
getThreadLocalRequest(), GetCoursesAndProblemsServiceImpl.class);
List<Problem> resultList =
Database.getInstance().getProblemsInCourse(user, course).getProblemList();
for (Problem p : resultList) {
logger.info(p.getTestname() + " - " + p.getBriefDescription());
}
return resultList.toArray(new Problem[resultList.size()]);
}
@Override
public void activate(final Session session, final SubscriptionRegistrar subscriptionRegistrar) {
// Add a ProblemSubmissionHistory object to the session.
ProblemSubmissionHistory history = new ProblemSubmissionHistory();
session.add(history);
// FIXME: for now, subscribe the page directly to the ProblemSubmissionHistory
// Eventually, only the various views should be subscribed
history.subscribe(
ProblemSubmissionHistory.Event.SET_SUBMISSION_RECEIPT_LIST, this, subscriptionRegistrar);
history.subscribe(ProblemSubmissionHistory.Event.SET_SELECTED, this, subscriptionRegistrar);
// FIXME: also subscribe to session add object events
session.subscribe(Session.Event.ADDED_OBJECT, this, subscriptionRegistrar);
// Show username, problem name and description
Problem problem = session.get(Problem.class);
UserSelection userSelection = session.get(UserSelection.class);
usernameAndProblemLabel.setText(
userSelection.getUser().getUsername() + ", " + problem.toNiceString());
// Activate views
pageNavPanel.setBackHandler(new PageBackHandler(session));
pageNavPanel.setLogoutHandler(new LogoutHandler(session));
sliderView.activate(session, subscriptionRegistrar);
problemTextView.activate(session, subscriptionRegistrar);
statusMessageView.activate(session, subscriptionRegistrar);
testOutcomeSummaryView.activate(session, subscriptionRegistrar);
testResultListView.activate(session, subscriptionRegistrar);
// Get all SubmissionReceipts for this user on this problem
RPC.getCoursesAndProblemsService.getAllSubmissionReceiptsForUser(
problem,
userSelection.getUser(),
new AsyncCallback<SubmissionReceipt[]>() {
@Override
public void onSuccess(SubmissionReceipt[] result) {
onLoadSubmissionReceipts(result);
}
@Override
public void onFailure(Throwable caught) {
session.add(StatusMessage.error("Could not get submission receipts", caught));
}
});
}
@Override
public void submit(int problemId, String programText)
throws CloudCoderAuthenticationException, SubmissionException {
// Make sure that client is authenticated and has permission to edit the given problem
User user = ServletUtil.checkClientIsAuthenticated(getThreadLocalRequest());
HttpSession session = getThreadLocalRequest().getSession();
// The Problem should be stored in the user's session
Problem problem = (Problem) session.getAttribute(SessionAttributeKeys.PROBLEM_KEY);
if (problem == null || problem.getProblemId() != problemId) {
throw new CloudCoderAuthenticationException();
}
// Insert a full-text change into the database.
Change fullTextChange =
new Change(
ChangeType.FULL_TEXT,
0,
0,
0,
0,
System.currentTimeMillis(),
user.getId(),
problem.getProblemId(),
programText);
Database.getInstance().storeChanges(new Change[] {fullTextChange});
// Get test cases. (TODO: cache them?)
List<TestCase> testCaseList = Database.getInstance().getTestCasesForProblem(problemId);
ISubmitService submitService = DefaultSubmitService.getInstance();
logger.info("Passing submission to submit service...");
IFutureSubmissionResult future = submitService.submitAsync(problem, testCaseList, programText);
// Put the full-text Change and IFutureSubmissionResult in the user's session.
addSessionObjects(session, fullTextChange, future);
}
private void onProblemSelected(Problem selectedProblem) {
ProblemAndSubmissionReceipt[] data = page.getSession().get(ProblemAndSubmissionReceipt[].class);
SingleSelectionModel<? super ProblemAndSubmissionReceipt> sm =
(SingleSelectionModel<? super ProblemAndSubmissionReceipt>) cellTable.getSelectionModel();
for (ProblemAndSubmissionReceipt p : data) {
if (p.getProblem().getProblemId().equals(selectedProblem.getProblemId())) {
// Found the selected problem, so change the selected row
sm.clear();
sm.setSelected(p, true);
return;
}
}
// The selected problem isn't being viewed currently,
// so just clear the selection
sm.clear();
}
@Override
public SubmissionReceipt[] getAllSubmissionReceiptsForUser(Problem problem, User user)
throws CloudCoderAuthenticationException {
// Make sure user is authenticated
User authenticatedUser =
ServletUtil.checkClientIsAuthenticated(
getThreadLocalRequest(), GetCoursesAndProblemsServiceImpl.class);
// Make sure authenticated user is an instructor
CourseRegistrationList regList =
Database.getInstance().findCourseRegistrations(authenticatedUser, problem.getCourseId());
if (!regList.isInstructor()) {
return new SubmissionReceipt[0];
}
return Database.getInstance().getAllSubmissionReceiptsForUser(problem, user);
}
@Override
public ShareExercisesResult submitExercises(
Problem[] problems, String repoUsername, String repoPassword)
throws CloudCoderAuthenticationException {
logger.warn("Sharing " + problems.length + " exercises");
// create the result place holder
ShareExercisesResult result = new ShareExercisesResult(problems.length);
if (problems.length == 0) {
result.failAll("No problems to be shared!");
return result;
}
// Only a course instructor may share an exercise.
User authenticatedUser =
ServletUtil.checkClientIsAuthenticated(
getThreadLocalRequest(), GetCoursesAndProblemsServiceImpl.class);
Course course = new Course();
course.setId(problems[0].getCourseId());
Database.getInstance().reloadModelObject(course);
CourseRegistrationList regList =
Database.getInstance().findCourseRegistrations(authenticatedUser, course);
if (!regList.isInstructor()) {
result.failAll("You must be an instructor to share an exercise");
return result;
}
// Get the exercise repository URL
ConfigurationSetting repoUrlSetting =
Database.getInstance().getConfigurationSetting(ConfigurationSettingName.PUB_REPOSITORY_URL);
if (repoUrlSetting == null) {
result.failAll("URL of exercise repository is not configured");
return result;
}
String repoUrl = repoUrlSetting.getValue();
if (repoUrl.endsWith("/")) {
repoUrl = repoUrl.substring(0, repoUrl.length() - 1);
}
HttpPost post = new HttpPost(repoUrl + "/exercisedata");
// Encode an Authorization header using the provided repository username and password.
String authHeaderValue =
"Basic "
+ DatatypeConverter.printBase64Binary(
(repoUsername + ":" + repoPassword).getBytes(Charset.forName("UTF-8")));
// System.out.println("Authorization: " + authHeaderValue);
post.addHeader("Authorization", authHeaderValue);
// Now go through and upload each problem
// For now, we do this one at a time
// In the future we could send problems and test cases
// to the repo in bulk, and add a new web service to handle it
for (Problem p : problems) {
// Look up the test cases
List<TestCase> testCaseList = Database.getInstance().getTestCasesForProblem(p.getProblemId());
ProblemAndTestCaseList exercise = new ProblemAndTestCaseList();
exercise.setProblem(p);
exercise.setTestCaseList(testCaseList);
// Convert the exercise to a JSON string
StringEntity entity;
StringWriter sw = new StringWriter();
try {
JSONConversion.writeProblemAndTestCaseData(exercise, sw);
entity = new StringEntity(sw.toString(), ContentType.create("application/json", "UTF-8"));
} catch (IOException e) {
// fail remaining test cases and return our results thus far
// some exercises may have been successfully shared
result.failRemaining("Could not convert exercise to JSON: " + e.getMessage());
return result;
}
post.setEntity(entity);
// POST the exercise to the repository
HttpClient client = new DefaultHttpClient();
try {
HttpResponse response = client.execute(post);
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
// Update the exercise's shared flag so we have a record that it was shared.
exercise.getProblem().setShared(true);
exercise.getProblem().setProblemAuthorship(ProblemAuthorship.IMPORTED);
Database.getInstance().storeProblemAndTestCaseList(exercise, course, authenticatedUser);
result.success();
} else if (statusLine.getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
result.failRemaining(
"Authentication with repository failed - incorrect username/password?");
return result;
} else {
result.failRemaining(
"Failed to publish exercise to repository: " + statusLine.getReasonPhrase());
return result;
}
} catch (ClientProtocolException e) {
result.failRemaining("Error sending exercise to repository: " + e.getMessage());
return result;
} catch (IOException e) {
result.failRemaining("Error sending exercise to repository: " + e.getMessage());
return result;
} finally {
client.getConnectionManager().shutdown();
}
}
result.allSucceeded(
"Successfully uploaded " + problems.length + " exercise to repository. Thanks!");
return result;
}
