@Override
public List<User> getApplicationFollowers(String applicationId) throws TException {
checkAppId(applicationId);
Statement query = createQueryForFollowersOfApp(applicationId);
ResultSet results;
try {
results = cassandra.execute(query);
} catch (Exception ex) {
LOG.error("Failed to query for App's followed: App: [{}]", applicationId, ex);
throw new OperationFailedException("Could not query for App's Followers: " + ex.getMessage());
}
List<User> followers = Lists.create();
for (Row row : results) {
User follower = createUserFromRow(row);
followers.add(follower);
}
LOG.debug("Found {} Users followed App [{}]", followers.size(), applicationId);
return followers;
}
@Override
public List<Application> getApplicationsFollowedBy(String userId) throws TException {
checkUserId(userId);
Statement query = createQueryForAppsFollowedBy(userId);
ResultSet results;
try {
results = cassandra.execute(query);
} catch (Exception ex) {
LOG.error("Failed to query Cassandra for apps followed by User: [{}]", userId, ex);
throw new OperationFailedException(
"Could not find apps followed by user: "******"Found {} apps followed by {}", apps.size(), userId);
return apps;
}
@Override
public boolean containsEvent(@Required String eventId, @Required User user) throws TException {
checkEventId(eventId);
checkUser(user);
return this.events
.getOrDefault(user, Lists.emptyList())
.stream()
.anyMatch(e -> Objects.equal(e.eventId, eventId));
}
@Override
public void saveEvent(Event event, User forUser, LengthOfTime lifetime) throws TException {
checkEvent(event);
checkUser(forUser);
checkLifetime(lifetime);
User user = forUser;
List<Event> eventsForUser = events.getOrDefault(user, Lists.create());
eventsForUser.add(event);
events.put(user, eventsForUser);
}
@Override
public Event getEvent(String eventId, User user) throws TException {
checkUser(user);
checkEventId(eventId);
return events
.getOrDefault(user, Lists.emptyList())
.stream()
.filter(e -> Objects.equal(e.eventId, eventId))
.findFirst()
.orElseThrow(() -> new DoesNotExistException("Event does not exist"));
}
@Override
public void deleteEvent(String eventId, User user) throws TException {
checkEventId(eventId);
checkUser(user);
List<Event> eventsForUser =
events
.getOrDefault(user, Lists.emptyList())
.stream()
.filter(e -> !Objects.equal(e.eventId, eventId))
.collect(toList());
events.put(user, eventsForUser);
}
@Override
public List<Event> getAllEventsFor(User user) throws TException {
checkUser(user);
return events.getOrDefault(user, Lists.emptyList());
}