private void pushChannel(
IPushChannel channel, IPreferences prefs, Notification notification, boolean ignoreFrequency)
throws PushException, RenderException {
IPushChannelPreferences cPrefs = prefs.getChannelPrefs().get(channel.getId());
if (cPrefs == null) {
cPrefs = channel.newDefaultPreferences();
if (cPrefs == null) {
// don't flood user after he configures this channel
throw new PushException("channel not configured for user", false);
}
}
if (!channel.getNotificationTypes().contains(notification.getType())) {
// channel not applicable for type
throw new PushException("channel not applicable for type " + notification.getType(), false);
}
Dispatch dispatch = _dispatchService.create(notification, prefs, cPrefs);
if (!channel.isConfigured(dispatch.getParams())) {
// don't flood user after he configures this channel
throw new PushException("channel not configured for user", false);
}
if (!ignoreFrequency && !Frequency.INSTANT.equals(cPrefs.getFrequency())) {
// temporary as other dispatcher will handle this
throw new PushException("channel not configured for this frequency", true);
}
channel.push(dispatch);
}
@Override
public Map<String, IPushChannelPreferences> newDefaultPreferences() {
Map<String, IPushChannelPreferences> map = Maps.newHashMap();
for (IPushChannel channel : _pushChannels) {
IPushChannelPreferences cPrefs = channel.newDefaultPreferences();
if (cPrefs != null) {
map.put(channel.getId(), cPrefs);
}
}
return map;
}
@Nonnull
private PushResultMessage push(@Nonnull Notification notification, boolean ignoreFrequency) {
IPreferences prefs;
final String unknownChannel = notification.getParams().get(INotifyService.NOTIFY_UNKNOWN);
if (unknownChannel != null) {
prefs = new Preferences().setUserId(notification.getUserId());
} else {
prefs = _preferencesDAO.getPreferences(notification.getUserId());
}
if (prefs == null) {
log.warn("can't push to unknown user " + notification.getUserId());
return PushResultMessage.persistent("unknown user " + notification.getUserId());
}
Set<String> successChannels = Sets.newHashSet();
Map<String, String> temporaryChannels = Maps.newHashMap();
Map<String, String> persistentChannels = Maps.newHashMap();
Iterable<IPushChannel> channels =
Iterables.filter(
_pushChannels,
new Predicate<IPushChannel>() {
@Override
public boolean apply(IPushChannel channel) {
return unknownChannel == null || channel.getId().equals(unknownChannel);
}
});
for (IPushChannel channel : channels) {
try {
pushChannel(channel, prefs, notification, ignoreFrequency);
successChannels.add(channel.getId());
} catch (PushException e) {
if (e.isTemporaryError()) {
temporaryChannels.put(channel.getId(), e.getMessage());
} else {
persistentChannels.put(channel.getId(), e.getMessage());
}
if (_errorListener != null) {
_errorListener.error(notification, channel, e);
} else {
log.info(
"failed to deliver notification "
+ notification
+ " on channel "
+ channel.getId()
+ ": "
+ ExceptionUtils.getAllMessages(e));
}
} catch (RenderException e) {
log.error("failed to render notification " + notification, e);
temporaryChannels.put(channel.getId(), ExceptionUtils.getAllMessages(e));
}
}
if (successChannels.size() > 0) {
return PushResultMessage.success("channels: " + successChannels);
} else if (temporaryChannels.size() > 0) {
return PushResultMessage.temporary("temporary error, channels: " + temporaryChannels);
} else if (persistentChannels.size() > 0) {
return PushResultMessage.persistent("persistent error, channels: " + persistentChannels);
} else {
return PushResultMessage.temporary("no allowed channels available");
}
}