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Code Issues Releases Wiki Activity

Add PubSubManager.getLeafNode() and improve prosody workaround 

by using the protected constructor and not reflection.
This commit is contained in:
Florian Schmaus 2017-04-19 11:44:01 +02:00
parent 7cc9e9ffcc
commit e6a51f2151
2 changed files with 114 additions and 16 deletions
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53
smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/PubSubException.java Normal file
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@ -0,0 +1,53 @@
/**
*
* Copyright 2017 Florian Schmaus
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smackx.pubsub;
import org.jivesoftware.smack.SmackException;
import org.jxmpp.jid.BareJid;
public abstract class PubSubException extends SmackException {
/**
*
*/
private static final long serialVersionUID = 1L;
public static class NotALeafNodeException extends PubSubException {
/**
*
*/
private static final long serialVersionUID = 1L;
private final String nodeId;
private final BareJid pubSubService;
NotALeafNodeException(String nodeId, BareJid pubSubService) {
this.nodeId = nodeId;
this.pubSubService = pubSubService;
}
public String getNodeId() {
return nodeId;
}
public BareJid getPubSubService() {
return pubSubService;
}
}
}

77
smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/PubSubManager.java
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@ -16,8 +16,6 @@
*/
package org.jivesoftware.smackx.pubsub;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
@ -42,6 +40,7 @@ import org.jivesoftware.smack.packet.ExtensionElement;
import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
import org.jivesoftware.smackx.disco.packet.DiscoverInfo;
import org.jivesoftware.smackx.disco.packet.DiscoverItems;
import org.jivesoftware.smackx.pubsub.PubSubException.NotALeafNodeException;
import org.jivesoftware.smackx.pubsub.packet.PubSub;
import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
import org.jivesoftware.smackx.pubsub.util.NodeUtils;
@ -269,10 +268,11 @@ public final class PubSubManager extends Manager {
* @throws NotConnectedException
* @throws InterruptedException
* @throws XMPPErrorException
* @throws NotALeafNodeException in case the node already exists as collection node.
* @since 4.2.1
*/
public LeafNode getOrCreateLeafNode(final String id)
throws NoResponseException, NotConnectedException, InterruptedException, XMPPErrorException {
throws NoResponseException, NotConnectedException, InterruptedException, XMPPErrorException, NotALeafNodeException {
try {
return getNode(id);
}
@ -301,25 +301,70 @@ public final class PubSubManager extends Manager {
}
}
/**
* Try to get a leaf node with the given node ID.
*
* @param id the node ID.
* @return the requested leaf node.
* @throws NotALeafNodeException in case the node exists but is a collection node.
* @throws NoResponseException
* @throws NotConnectedException
* @throws InterruptedException
* @throws XMPPErrorException
* @since 4.2.1
*/
public LeafNode getLeafNode(String id) throws NotALeafNodeException, NoResponseException, NotConnectedException,
InterruptedException, XMPPErrorException {
Node node;
try {
node = getNode(id);
}
catch (XMPPErrorException e) {
if (e.getXMPPError().getCondition() == Condition.service_unavailable) {
}
throw e;
}
if (node instanceof LeafNode) {
return (LeafNode) node;
}
throw new PubSubException.NotALeafNodeException(id, pubSubService);
}
private LeafNode getLeafNodeProsoydWorkaround(final String id) throws NoResponseException, NotConnectedException, InterruptedException, NotALeafNodeException {
LeafNode leafNode = new LeafNode(this, id);
try {
// Try to ensure that this is not a collection node by asking for one item form the node.
leafNode.getItems(1);
} catch (XMPPErrorException e) {
Condition condition = e.getXMPPError().getCondition();
switch (condition) {
// XEP-0060 § 6.5.9.11: Node does not exist
case item_not_found:
return null;
// XEP-0060 § 6.5.9.5: Item retrieval not supported, e.g. because node is a collection node
case feature_not_implemented:
throw new PubSubException.NotALeafNodeException(id, pubSubService);
default:
break;
}
}
nodeMap.put(id, leafNode);
return leafNode;
}
private LeafNode getOrCreateLeafNodeProsodyWorkaround(final String id)
throws XMPPErrorException, NoResponseException, NotConnectedException, InterruptedException {
throws XMPPErrorException, NoResponseException, NotConnectedException, InterruptedException, NotALeafNodeException {
try {
return createNode(id);
}
catch (XMPPErrorException e1) {
if (e1.getXMPPError().getCondition() == Condition.conflict) {
Constructor<?> constructor = LeafNode.class.getDeclaredConstructors()[0];
constructor.setAccessible(true);
LeafNode res;
try {
res = (LeafNode) constructor.newInstance(this, id);
}
catch (InstantiationException | IllegalAccessException | IllegalArgumentException
| InvocationTargetException e2) {
throw new AssertionError(e2);
}
// TODO: How to verify that this is actually a leafe node and not a conflict with a collection node?
return res;
return getLeafNodeProsoydWorkaround(id);
}
throw e1;
}