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package org.voltdb.regressionsuites;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import junit.framework.Test;
import org.voltdb.BackendTarget;
import org.voltdb.VoltTable;
import org.voltdb.client.Client;
import org.voltdb.client.ClientFactory;
import org.voltdb.client.ClientResponse;
import org.voltdb.client.ProcedureCallback;
import org.voltdb.compiler.VoltProjectBuilder;
import org.voltdb.utils.MiscUtils;
public class TestStopNode extends RegressionSuite
{
static LocalCluster m_config;
static int kfactor = 3;
public TestStopNode(String name) {
super(name);
}
static VoltProjectBuilder getBuilderForTest() throws IOException {
VoltProjectBuilder builder = new VoltProjectBuilder();
builder.addLiteralSchema("");
return builder;
}
class StopCallBack implements ProcedureCallback {
final byte m_status;
final int m_hid;
final CountDownLatch m_cdl;
public StopCallBack(CountDownLatch cdl, byte status, int hid) {
m_status = status;
m_hid = hid;
m_cdl = cdl;
}
@Override
public void clientCallback(ClientResponse clientResponse) throws Exception {
m_cdl.countDown();
System.out.println("Host " + m_hid
+ " Result : " + clientResponse.getStatusString() + " Status: " + clientResponse.getStatus());
assertEquals(m_status, clientResponse.getStatus());
}
}
public void waitForHostToBeGone(int hid) {
while (true) {
Client client = null;
VoltTable table = null;
try {
Thread.sleep(1000);
client = getFullyConnectedClient();
table = client.callProcedure("@SystemInformation", "overview").getResults()[0];
client.close();
client = null;
} catch (Exception ex) {
System.out.println("Failed to get SystemInformation overview: " + ex.getMessage());
continue;
}
boolean done = true;
while (table.advanceRow()) {
long hc = table.getLong("HOST_ID");
if (hc == hid) {
done = false;
break;
}
}
System.out.println("Host " + hid + " Still there");
if (done) {
if (client != null) {
try {
client.close();
} catch (InterruptedException ex) {
}
}
return;
}
}
}
public void testStopNode() throws Exception {
Client client = ClientFactory.createClient();
client.createConnection("localhost", m_config.port(0));
try {
CountDownLatch cdl = new CountDownLatch(1);
byte expectedResponse = (kfactor > 0) ? ClientResponse.SUCCESS : ClientResponse.GRACEFUL_FAILURE;
client.callProcedure(new StopCallBack(cdl, expectedResponse, 4), "@StopNode", 4);
cdl.await();
if (expectedResponse == ClientResponse.SUCCESS) {
waitForHostToBeGone(4);
}
cdl = new CountDownLatch(1);
client.callProcedure(new StopCallBack(cdl, expectedResponse, 3), "@StopNode", 3);
cdl.await();
if (expectedResponse == ClientResponse.SUCCESS) {
waitForHostToBeGone(3);
}
cdl = new CountDownLatch(1);
client.callProcedure(new StopCallBack(cdl, expectedResponse, 2), "@StopNode", 2);
cdl.await();
if (expectedResponse == ClientResponse.SUCCESS) {
waitForHostToBeGone(2);
}
client.callProcedure("@SystemInformation", "overview");
} catch (Exception ex) {
//We should not get here
fail();
ex.printStackTrace();
}
boolean lostConnect = false;
try {
CountDownLatch cdl = new CountDownLatch(3);
//Stop a node that should stay up
client.callProcedure(new StopCallBack(cdl, ClientResponse.GRACEFUL_FAILURE, 1), "@StopNode", 1);
//Stop already stopped node.
client.callProcedure(new StopCallBack(cdl, ClientResponse.GRACEFUL_FAILURE, 4), "@StopNode", 4);
//Stop a node that should stay up
client.callProcedure(new StopCallBack(cdl, ClientResponse.GRACEFUL_FAILURE, 0), "@StopNode", 0);
client.callProcedure("@SystemInformation", "overview");
client.drain();
cdl.await();
} catch (Exception pce) {
pce.printStackTrace();
lostConnect = pce.getMessage().contains("was lost before a response was received");
}
//We should never lose contact.
assertFalse(lostConnect);
}
@Override
public void tearDown() throws Exception {
super.tearDown();
}
static public Test suite() throws IOException {
// the suite made here will all be using the tests from this class
MultiConfigSuiteBuilder builder = new MultiConfigSuiteBuilder(TestStopNode.class);
// build up a project builder for the workload
VoltProjectBuilder project = getBuilderForTest();
boolean success;
//Lets tolerate 3 node failures.
if (!MiscUtils.isPro()) {
kfactor = 0;
}
m_config = new LocalCluster("decimal-default.jar", 4, 5, kfactor, BackendTarget.NATIVE_EE_JNI);
m_config.setHasLocalServer(true);
success = m_config.compile(project);
assertTrue(success);
// add this config to the set of tests to run
builder.addServerConfig(m_config);
return builder;
}
}