/*
* 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.apache.karaf.cellar.shell;
import org.apache.karaf.cellar.core.Node;
import org.apache.karaf.cellar.utils.ping.Ping;
import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import java.util.Arrays;
import java.util.HashSet;
@Command(scope = "cluster", name = "node-ping", description = "Ping a cluster node")
public class NodePingCommand extends ClusterCommandSupport {
private static Long TIMEOUT = 5000L;
@Argument(index = 0, name = "node", description = "The node ID to ping", required = true, multiValued = false)
String nodeId;
@Argument(index = 1, name = "iterations", description = "The number of iterations to perform", required = false, multiValued = false)
Integer iterations = 10;
@Argument(index = 2, name = "interval", description = "The time in millis to wait between iterations", required = false, multiValued = false)
Long interval = 1000L;
@Override
protected Object doExecute() throws Exception {
Node node = clusterManager.findNodeById(nodeId);
if (node == null) {
System.out.println("Cluster node " + nodeId + " doesn't exist");
return null;
}
System.out.println("PING " + node.getId());
try {
for (int i = 1; i <= iterations; i++) {
Long start = System.currentTimeMillis();
Ping ping = new Ping(clusterManager.generateId());
ping.setDestination(new HashSet(Arrays.asList(node)));
executionContext.execute(ping);
Long stop = System.currentTimeMillis();
Long delay = stop - start;
if (delay >= TIMEOUT) {
System.err.println(String.format("TIMEOUT %s %s", i, node.getId()));
} else {
System.out.println(String.format("from %s: req=%s time=%s ms", i, node.getId(), delay));
}
Thread.sleep(interval);
}
} catch (InterruptedException e) {
// nothing to do
} catch (Exception e) {
throw e;
}
return null;
}
}