92 lines
2.4 KiB
Java
92 lines
2.4 KiB
Java
/**
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*
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* Copyright 2018 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;
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import java.util.Date;
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import java.util.concurrent.Delayed;
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import java.util.concurrent.TimeUnit;
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import org.jivesoftware.smack.util.Async;
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public class ScheduledAction implements Delayed {
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enum Kind {
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NonBlocking,
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Blocking,
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}
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private final Runnable action;
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final Date releaseTime;
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final SmackReactor smackReactor;
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final Kind kind;
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ScheduledAction(Runnable action, Date releaseTime, SmackReactor smackReactor, Kind kind) {
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this.action = action;
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this.releaseTime = releaseTime;
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this.smackReactor = smackReactor;
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this.kind = kind;
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}
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/**
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* Cancels this scheduled action.
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*
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* @return <code>true</code> if the scheduled action was still pending and got removed, <code>false</code> otherwise.
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*/
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public boolean cancel() {
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return smackReactor.cancel(this);
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}
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public boolean isDue() {
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Date now = new Date();
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return now.after(releaseTime);
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}
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public long getTimeToDueMillis() {
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long now = System.currentTimeMillis();
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return releaseTime.getTime() - now;
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}
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@Override
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public int compareTo(Delayed otherDelayed) {
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if (this == otherDelayed) {
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return 0;
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}
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long thisDelay = getDelay(TimeUnit.MILLISECONDS);
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long otherDelay = otherDelayed.getDelay(TimeUnit.MILLISECONDS);
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return Long.compare(thisDelay, otherDelay);
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}
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@Override
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public long getDelay(TimeUnit unit) {
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long delayInMillis = getTimeToDueMillis();
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return unit.convert(delayInMillis, TimeUnit.MILLISECONDS);
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}
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void run() {
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switch (kind) {
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case NonBlocking:
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action.run();
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break;
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case Blocking:
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Async.go(() -> action.run());
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break;
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}
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}
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}
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