/**
* Creates a new registration in the server. If it exists, updates its information
*
* @param registration The registration to create
* @return The created registration
* @throws Exception
*/
private Registration registerInternal(Registration registration) throws Exception {
if (mIsRefreshNeeded) {
String pNSHandle = mSharedPreferences.getString(STORAGE_PREFIX + PNS_HANDLE_KEY, "");
if (isNullOrWhiteSpace(pNSHandle)) {
pNSHandle = registration.getPNSHandle();
}
refreshRegistrationInformation(pNSHandle);
}
String registrationId = retrieveRegistrationId(registration.getName());
if (isNullOrWhiteSpace(registrationId)) {
registrationId = createRegistrationId();
}
registration.setRegistrationId(registrationId);
try {
return upsertRegistrationInternal(registration);
} catch (RegistrationGoneException e) {
// if we get an RegistrationGoneException (410) from service, we will recreate registration id
// and will try to do upsert one more time.
}
registrationId = createRegistrationId();
registration.setRegistrationId(registrationId);
return upsertRegistrationInternal(registration);
}
/**
* Registers the client for native notifications with the specified tags
*
* @param pnsHandle PNS specific identifier
* @param tags Tags to use in the registration
* @return The created registration
* @throws Exception
*/
public Registration register(String pnsHandle, String... tags) throws Exception {
if (isNullOrWhiteSpace(pnsHandle)) {
throw new IllegalArgumentException("pnsHandle");
}
Registration registration =
PnsSpecificRegistrationFactory.getInstance().createNativeRegistration(mNotificationHubPath);
registration.setPNSHandle(pnsHandle);
registration.setName(Registration.DEFAULT_REGISTRATION_NAME);
registration.addTags(tags);
return registerInternal(registration);
}
/**
* Updates a registration
*
* @param registration The registration to update
* @return The updated registration
* @throws Exception
*/
private Registration upsertRegistrationInternal(Registration registration) throws Exception {
Connection conn = new Connection(mConnectionString);
String resource = registration.getURI();
String content = registration.toXml();
String response = conn.executeRequest(resource, content, XML_CONTENT_TYPE, "PUT");
Registration result;
if (PnsSpecificRegistrationFactory.getInstance().isTemplateRegistration(response)) {
result =
PnsSpecificRegistrationFactory.getInstance()
.createTemplateRegistration(mNotificationHubPath);
} else {
result =
PnsSpecificRegistrationFactory.getInstance()
.createNativeRegistration(mNotificationHubPath);
}
result.loadXml(response, mNotificationHubPath);
storeRegistrationId(result.getName(), result.getRegistrationId(), registration.getPNSHandle());
return result;
}
private void refreshRegistrationInformation(String pnsHandle) throws Exception {
if (isNullOrWhiteSpace(pnsHandle)) {
throw new IllegalArgumentException("pnsHandle");
}
// delete old registration information
Editor editor = mSharedPreferences.edit();
Set<String> keys = mSharedPreferences.getAll().keySet();
for (String key : keys) {
if (key.startsWith(STORAGE_PREFIX + REGISTRATION_NAME_STORAGE_KEY)) {
editor.remove(key);
}
}
editor.commit();
// get existing registrations
Connection conn = new Connection(mConnectionString);
String filter =
PnsSpecificRegistrationFactory.getInstance().getPNSHandleFieldName()
+ " eq '"
+ pnsHandle
+ "'";
String resource =
mNotificationHubPath + "/Registrations/?$filter=" + URLEncoder.encode(filter, "UTF-8");
String content = null;
String response = conn.executeRequest(resource, content, XML_CONTENT_TYPE, "GET");
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
builder.setEntityResolver(
new EntityResolver() {
@Override
public InputSource resolveEntity(String publicId, String systemId)
throws SAXException, IOException {
return null;
}
});
Document doc = builder.parse(new InputSource(new StringReader(response)));
doc.getDocumentElement().normalize();
Element root = doc.getDocumentElement();
// for each registration, parse it
NodeList entries = root.getElementsByTagName("entry");
for (int i = 0; i < entries.getLength(); i++) {
Registration registration;
Element entry = (Element) entries.item(i);
String xml = getXmlString(entry);
if (PnsSpecificRegistrationFactory.getInstance().isTemplateRegistration(xml)) {
registration =
PnsSpecificRegistrationFactory.getInstance()
.createTemplateRegistration(mNotificationHubPath);
} else {
registration =
PnsSpecificRegistrationFactory.getInstance()
.createNativeRegistration(mNotificationHubPath);
}
registration.loadXml(xml, mNotificationHubPath);
storeRegistrationId(
registration.getName(), registration.getRegistrationId(), registration.getPNSHandle());
}
mIsRefreshNeeded = false;
}