52 lines
1.5 KiB
Java
52 lines
1.5 KiB
Java
/**
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*
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* Copyright 2019 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.packet.id;
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import java.util.concurrent.atomic.AtomicLong;
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import org.jivesoftware.smack.util.StringUtils;
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public class StandardStanzaIdSource implements StanzaIdSource {
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public static final StandardStanzaIdSource DEFAULT = new StandardStanzaIdSource();
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/**
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* A prefix helps to make sure that ID's are unique across multiple instances.
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*/
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private final String prefix = StringUtils.randomString(5) + "-";
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/**
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* Keeps track of the current increment, which is appended to the prefix to
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* forum a unique ID.
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*/
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private final AtomicLong id = new AtomicLong();
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@Override
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public String getNewStanzaId() {
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return prefix + Long.toString(id.incrementAndGet());
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}
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public static class Factory implements StanzaIdSourceFactory {
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@Override
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public StandardStanzaIdSource constructStanzaIdSource() {
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return new StandardStanzaIdSource();
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}
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}
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}
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