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Code Issues Releases Wiki Activity

Fix OfflineMessageManager.getMessages(List<STring>)

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by implementing a new logic how the messages are retrieved.

Previously in case the node list has exactly one item, the method
would perform an unnecessary call to nextResult() causing a delay.

Fixes SMACK-785.
This commit is contained in:
Florian Schmaus 2017-11-18 15:49:57 +01:00
parent 809ab6f42f
commit 52bd680bb5
1 changed files with 15 additions and 6 deletions
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19
smack-extensions/src/main/java/org/jivesoftware/smackx/offline/OfflineMessageManager.java
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@ -19,6 +19,8 @@ package org.jivesoftware.smackx.offline;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jivesoftware.smack.SmackException.NoResponseException; import org.jivesoftware.smack.SmackException.NoResponseException;
import org.jivesoftware.smack.SmackException.NotConnectedException; import org.jivesoftware.smack.SmackException.NotConnectedException;
@ -58,6 +60,8 @@ import org.jivesoftware.smackx.xdata.Form;
*/ */
public class OfflineMessageManager { public class OfflineMessageManager {
private static final Logger LOGGER = Logger.getLogger(OfflineMessageManager.class.getName());
private final static String namespace = "http://jabber.org/protocol/offline"; private final static String namespace = "http://jabber.org/protocol/offline";
private final XMPPConnection connection; private final XMPPConnection connection;
@ -144,7 +148,7 @@ public class OfflineMessageManager {
* @throws InterruptedException * @throws InterruptedException
*/ */
public List<Message> getMessages(final List<String> nodes) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException { public List<Message> getMessages(final List<String> nodes) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
List<Message> messages = new ArrayList<Message>(); List<Message> messages = new ArrayList<Message>(nodes.size());
OfflineMessageRequest request = new OfflineMessageRequest(); OfflineMessageRequest request = new OfflineMessageRequest();
for (String node : nodes) { for (String node : nodes) {
OfflineMessageRequest.Item item = new OfflineMessageRequest.Item(node); OfflineMessageRequest.Item item = new OfflineMessageRequest.Item(node);
@ -165,12 +169,17 @@ public class OfflineMessageManager {
try { try {
connection.createStanzaCollectorAndSend(request).nextResultOrThrow(); connection.createStanzaCollectorAndSend(request).nextResultOrThrow();
// Collect the received offline messages // Collect the received offline messages
Message message = messageCollector.nextResult(); Message message;
while (message != null && pendingNodes > 0) { do {
pendingNodes--;
messages.add(message);
message = messageCollector.nextResult(); message = messageCollector.nextResult();
if (message != null) {
messages.add(message);
pendingNodes--;
} else if (message == null && pendingNodes > 0) {
LOGGER.log(Level.WARNING,
"Did not receive all expected offline messages. " + pendingNodes + " are missing.");
} }
} while (message != null && pendingNodes > 0);
} }
finally { finally {
// Stop queuing offline messages // Stop queuing offline messages