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SyncCommand.java
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SyncCommand.java
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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with this
* work for additional information regarding copyright ownership. The ASF
* licenses this file to you 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.apache.zookeeper.cli;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.Parser;
import org.apache.commons.cli.PosixParser;
import org.apache.zookeeper.AsyncCallback;
/**
* sync command for cli
*/
public class SyncCommand extends CliCommand {
private static Options options = new Options();
private String[] args;
public static final long SYNC_TIMEOUT = TimeUnit.SECONDS.toMillis(30L);
public SyncCommand() {
super("sync", "path");
}
@Override
public CliCommand parse(String[] cmdArgs) throws CliParseException {
Parser parser = new PosixParser();
CommandLine cl;
try {
cl = parser.parse(options, cmdArgs);
} catch (ParseException ex) {
throw new CliParseException(ex);
}
args = cl.getArgs();
if (args.length < 2) {
throw new CliParseException(getUsageStr());
}
return this;
}
@Override
public boolean exec() throws CliException {
String path = args[1];
CompletableFuture<Integer> cf = new CompletableFuture<>();
try {
zk.sync(path, new AsyncCallback.VoidCallback() {
public void processResult(int rc, String path, Object ctx) {
cf.complete(rc);
}
}, null);
int resultCode = cf.get(SYNC_TIMEOUT, TimeUnit.MILLISECONDS);
if(resultCode == 0) {
out.println("Sync is OK");
} else {
out.println("Sync has failed. rc=" + resultCode);
}
} catch (IllegalArgumentException ex) {
throw new MalformedPathException(ex.getMessage());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
throw new CliWrapperException(ie);
} catch (TimeoutException | ExecutionException ex) {
throw new CliWrapperException(ex);
}
return false;
}
}