/**
* Fetches and parses the message envelopes for the supplied messages. The idea is to have this be
* recursive so that we do a series of medium calls instead of one large massive call or a large
* number of smaller calls. Call it a happy balance
*/
private void fetchEnvelope(
List<WebDavMessage> startMessages, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
Map<String, String> headers = new HashMap<String, String>();
String messageBody;
String[] uids;
List<WebDavMessage> messages = new ArrayList<WebDavMessage>(10);
if (startMessages == null || startMessages.isEmpty()) {
return;
}
if (startMessages.size() > 10) {
List<WebDavMessage> newMessages = new ArrayList<WebDavMessage>(startMessages.size() - 10);
for (int i = 0, count = startMessages.size(); i < count; i++) {
if (i < 10) {
messages.add(i, startMessages.get(i));
} else {
newMessages.add(i - 10, startMessages.get(i));
}
}
fetchEnvelope(newMessages, listener);
} else {
messages.addAll(startMessages);
}
uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
messageBody = store.getMessageEnvelopeXml(uids);
headers.put("Brief", "t");
DataSet dataset = store.processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
Map<String, ParsedMessageEnvelope> envelopes = dataset.getMessageEnvelopes();
int count = messages.size();
for (int i = messages.size() - 1; i >= 0; i--) {
WebDavMessage message = messages.get(i);
if (listener != null) {
listener.messageStarted(messages.get(i).getUid(), i, count);
}
ParsedMessageEnvelope envelope = envelopes.get(message.getUid());
if (envelope != null) {
message.setNewHeaders(envelope);
message.setFlagInternal(Flag.SEEN, envelope.getReadStatus());
} else {
Log.e(LOG_TAG, "Asked to get metadata for a non-existent message: " + message.getUid());
}
if (listener != null) {
listener.messageFinished(messages.get(i), i, count);
}
}
}
/**
* Fetches and sets the message flags for the supplied messages. The idea is to have this be
* recursive so that we do a series of medium calls instead of one large massive call or a large
* number of smaller calls.
*/
private void fetchFlags(
List<WebDavMessage> startMessages, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
HashMap<String, String> headers = new HashMap<String, String>();
String messageBody;
List<Message> messages = new ArrayList<Message>(20);
String[] uids;
if (startMessages == null || startMessages.isEmpty()) {
return;
}
if (startMessages.size() > 20) {
List<WebDavMessage> newMessages = new ArrayList<WebDavMessage>(startMessages.size() - 20);
for (int i = 0, count = startMessages.size(); i < count; i++) {
if (i < 20) {
messages.add(startMessages.get(i));
} else {
newMessages.add(startMessages.get(i));
}
}
fetchFlags(newMessages, listener);
} else {
messages.addAll(startMessages);
}
uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
messageBody = store.getMessageFlagsXml(uids);
headers.put("Brief", "t");
DataSet dataset = store.processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
if (dataset == null) {
throw new MessagingException("Data Set from request was null");
}
Map<String, Boolean> uidToReadStatus = dataset.getUidToRead();
for (int i = 0, count = messages.size(); i < count; i++) {
if (!(messages.get(i) instanceof WebDavMessage)) {
throw new MessagingException("WebDavStore fetch called with non-WebDavMessage");
}
WebDavMessage wdMessage = (WebDavMessage) messages.get(i);
try {
wdMessage.setFlagInternal(Flag.SEEN, uidToReadStatus.get(wdMessage.getUid()));
} catch (NullPointerException e) {
Log.v(
LOG_TAG,
"Under some weird circumstances, setting the read status when syncing from webdav threw an NPE. Skipping.");
}
}
}
/**
* Fetches the full messages or up to {@param lines} lines and passes them to the message parser.
*/
private void fetchMessages(
List<WebDavMessage> messages, MessageRetrievalListener<WebDavMessage> listener, int lines)
throws MessagingException {
WebDavHttpClient httpclient;
httpclient = store.getHttpClient();
/** We can't hand off to processRequest() since we need the stream to parse. */
for (int i = 0, count = messages.size(); i < count; i++) {
WebDavMessage wdMessage = messages.get(i);
int statusCode = 0;
if (listener != null) {
listener.messageStarted(wdMessage.getUid(), i, count);
}
/**
* If fetch is called outside of the initial list (ie, a locally stored message), it may not
* have a URL associated. Verify and fix that
*/
if (wdMessage.getUrl().equals("")) {
wdMessage.setUrl(getMessageUrls(new String[] {wdMessage.getUid()}).get(wdMessage.getUid()));
Log.i(
LOG_TAG,
"Fetching messages with UID = '"
+ wdMessage.getUid()
+ "', URL = '"
+ wdMessage.getUrl()
+ "'");
if (wdMessage.getUrl().equals("")) {
throw new MessagingException("Unable to get URL for message");
}
}
try {
Log.i(
LOG_TAG,
"Fetching message with UID = '"
+ wdMessage.getUid()
+ "', URL = '"
+ wdMessage.getUrl()
+ "'");
HttpGet httpget = new HttpGet(new URI(wdMessage.getUrl()));
HttpResponse response;
HttpEntity entity;
httpget.setHeader("translate", "f");
if (store.getAuthentication() == WebDavConstants.AUTH_TYPE_BASIC) {
httpget.setHeader("Authorization", store.getAuthString());
}
response = httpclient.executeOverride(httpget, store.getContext());
statusCode = response.getStatusLine().getStatusCode();
entity = response.getEntity();
if (statusCode < 200 || statusCode > 300) {
throw new IOException(
"Error during with code "
+ statusCode
+ " during fetch: "
+ response.getStatusLine().toString());
}
if (entity != null) {
InputStream istream = null;
StringBuilder buffer = new StringBuilder();
String tempText;
String resultText;
BufferedReader reader = null;
int currentLines = 0;
try {
istream = WebDavHttpClient.getUngzippedContent(entity);
if (lines != -1) {
// Convert the ungzipped input stream into a StringBuilder
// containing the given line count
reader = new BufferedReader(new InputStreamReader(istream), 8192);
while ((tempText = reader.readLine()) != null && (currentLines < lines)) {
buffer.append(tempText).append("\r\n");
currentLines++;
}
IOUtils.closeQuietly(istream);
resultText = buffer.toString();
istream = new ByteArrayInputStream(resultText.getBytes("UTF-8"));
}
// Parse either the entire message stream, or a stream of the given lines
wdMessage.parse(istream);
} catch (IOException ioe) {
Log.e(
LOG_TAG,
"IOException: "
+ ioe.getMessage()
+ "\nTrace: "
+ WebDavUtils.processException(ioe));
throw new MessagingException("I/O Error", ioe);
} finally {
IOUtils.closeQuietly(reader);
IOUtils.closeQuietly(istream);
}
} else {
Log.v(LOG_TAG, "Empty response");
}
} catch (IllegalArgumentException iae) {
Log.e(
LOG_TAG,
"IllegalArgumentException caught "
+ iae
+ "\nTrace: "
+ WebDavUtils.processException(iae));
throw new MessagingException("IllegalArgumentException caught", iae);
} catch (URISyntaxException use) {
Log.e(
LOG_TAG,
"URISyntaxException caught " + use + "\nTrace: " + WebDavUtils.processException(use));
throw new MessagingException("URISyntaxException caught", use);
} catch (IOException ioe) {
Log.e(
LOG_TAG,
"Non-success response code loading message, response code was "
+ statusCode
+ "\nURL: "
+ wdMessage.getUrl()
+ "\nError: "
+ ioe.getMessage()
+ "\nTrace: "
+ WebDavUtils.processException(ioe));
throw new MessagingException("Failure code " + statusCode, ioe);
}
if (listener != null) {
listener.messageFinished(wdMessage, i, count);
}
}
}
