56 lines
1.8 KiB
Java
56 lines
1.8 KiB
Java
/**
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*
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* Copyright © 2014-2020 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.sm.predicates.tcp;
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import org.jivesoftware.smack.filter.StanzaFilter;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.tcp.XMPPTCPConnection;
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import org.jivesoftware.smack.util.StringUtils;
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public final class OnceForThisStanza implements StanzaFilter {
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private final String id;
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private final XMPPTCPConnection connection;
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public static void setup(XMPPTCPConnection connection, Stanza packet) {
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StanzaFilter packetFilter = new OnceForThisStanza(connection, packet);
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connection.addRequestAckPredicate(packetFilter);
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}
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private OnceForThisStanza(XMPPTCPConnection connection, Stanza packet) {
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this.connection = connection;
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this.id = packet.getStanzaId();
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if (StringUtils.isNullOrEmpty(id)) {
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throw new IllegalArgumentException("Stanza ID must be set");
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}
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}
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@Override
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public boolean accept(Stanza packet) {
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String otherId = packet.getStanzaId();
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if (StringUtils.isNullOrEmpty(otherId)) {
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return false;
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}
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if (id.equals(otherId)) {
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connection.removeRequestAckPredicate(this);
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return true;
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}
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return false;
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}
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}
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