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HADOOP-12611. TestZKSignerSecretProvider#testMultipleInit occasionally fail (ebadger via rkanter) 

(cherry picked from commit c183b9de8d)
This commit is contained in:
Robert Kanter 2016-10-07 09:33:24 -07:00
parent 2ff6ffe0ef
commit dfc0e3f543
2 changed files with 103 additions and 126 deletions
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2
hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/RolloverSignerSecretProvider.java
View File

@ -38,7 +38,7 @@ import org.slf4j.LoggerFactory;
public abstract class RolloverSignerSecretProvider
extends SignerSecretProvider {
private static Logger LOG = LoggerFactory.getLogger(
static Logger LOG = LoggerFactory.getLogger(
RolloverSignerSecretProvider.class);
/**
* Stores the currently valid secrets. The current secret is the 0th element

227
hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/util/TestZKSignerSecretProvider.java
View File

@ -17,7 +17,12 @@ import java.util.Arrays;
import java.util.Properties;
import java.util.Random;
import javax.servlet.ServletContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.curator.test.TestingServer;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
@ -25,7 +30,6 @@ import org.junit.Test;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
@ -34,9 +38,14 @@ public class TestZKSignerSecretProvider {
private TestingServer zkServer;
// rollover every 2 sec
private final int timeout = 4000;
private final int timeout = 100;
private final long rolloverFrequency = timeout / 2;
static final Log LOG = LogFactory.getLog(TestZKSignerSecretProvider.class);
{
LogManager.getLogger( RolloverSignerSecretProvider.LOG.getName() ).setLevel(Level.DEBUG);
}
@Before
public void setup() throws Exception {
zkServer = new TestingServer();
@ -60,8 +69,8 @@ public class TestZKSignerSecretProvider {
byte[] secret2 = Long.toString(rand.nextLong()).getBytes();
byte[] secret1 = Long.toString(rand.nextLong()).getBytes();
byte[] secret3 = Long.toString(rand.nextLong()).getBytes();
ZKSignerSecretProvider secretProvider =
spy(new ZKSignerSecretProvider(seed));
MockZKSignerSecretProvider secretProvider =
spy(new MockZKSignerSecretProvider(seed));
Properties config = new Properties();
config.setProperty(
ZKSignerSecretProvider.ZOOKEEPER_CONNECTION_STRING,
@ -77,7 +86,8 @@ public class TestZKSignerSecretProvider {
Assert.assertEquals(2, allSecrets.length);
Assert.assertArrayEquals(secret1, allSecrets[0]);
Assert.assertNull(allSecrets[1]);
verify(secretProvider, timeout(timeout).times(1)).rollSecret();
verify(secretProvider, timeout(timeout).atLeastOnce()).rollSecret();
secretProvider.realRollSecret();
currentSecret = secretProvider.getCurrentSecret();
allSecrets = secretProvider.getAllSecrets();
@ -85,7 +95,8 @@ public class TestZKSignerSecretProvider {
Assert.assertEquals(2, allSecrets.length);
Assert.assertArrayEquals(secret2, allSecrets[0]);
Assert.assertArrayEquals(secret1, allSecrets[1]);
verify(secretProvider, timeout(timeout).times(2)).rollSecret();
verify(secretProvider, timeout(timeout).atLeast(2)).rollSecret();
secretProvider.realRollSecret();
currentSecret = secretProvider.getCurrentSecret();
allSecrets = secretProvider.getAllSecrets();
@ -93,35 +104,70 @@ public class TestZKSignerSecretProvider {
Assert.assertEquals(2, allSecrets.length);
Assert.assertArrayEquals(secret3, allSecrets[0]);
Assert.assertArrayEquals(secret2, allSecrets[1]);
verify(secretProvider, timeout(timeout).times(3)).rollSecret();
verify(secretProvider, timeout(timeout).atLeast(3)).rollSecret();
secretProvider.realRollSecret();
} finally {
secretProvider.destroy();
}
}
/**
* A hack to test ZKSignerSecretProvider.
* We want to test that ZKSignerSecretProvider.rollSecret() is periodically
* called at the expected frequency, but we want to exclude the
* race-condition.
*/
private class MockZKSignerSecretProvider extends ZKSignerSecretProvider {
MockZKSignerSecretProvider(long seed) {
super(seed);
}
@Override
protected synchronized void rollSecret() {
// this is a no-op: simply used for Mockito to verify that rollSecret()
// is periodically called at the expected frequency
}
public void realRollSecret() {
// the test code manually calls ZKSignerSecretProvider.rollSecret()
// to update the state
super.rollSecret();
}
}
@Test
public void testMultipleInit() throws Exception {
// use the same seed so we can predict the RNG
public void testMultiple1() throws Exception {
testMultiple(1);
}
@Test
public void testMultiple2() throws Exception {
testMultiple(2);
}
/**
* @param order:
* 1: secretProviderA wins both realRollSecret races
* 2: secretProviderA wins 1st race, B wins 2nd
* @throws Exception
*/
public void testMultiple(int order) throws Exception {
long seedA = System.currentTimeMillis();
Random rand = new Random(seedA);
byte[] secretA2 = Long.toString(rand.nextLong()).getBytes();
byte[] secretA1 = Long.toString(rand.nextLong()).getBytes();
byte[] secretA3 = Long.toString(rand.nextLong()).getBytes();
byte[] secretA4 = Long.toString(rand.nextLong()).getBytes();
// use the same seed so we can predict the RNG
long seedB = System.currentTimeMillis() + rand.nextLong();
rand = new Random(seedB);
byte[] secretB2 = Long.toString(rand.nextLong()).getBytes();
byte[] secretB1 = Long.toString(rand.nextLong()).getBytes();
// use the same seed so we can predict the RNG
long seedC = System.currentTimeMillis() + rand.nextLong();
rand = new Random(seedC);
byte[] secretC2 = Long.toString(rand.nextLong()).getBytes();
byte[] secretC1 = Long.toString(rand.nextLong()).getBytes();
ZKSignerSecretProvider secretProviderA =
spy(new ZKSignerSecretProvider(seedA));
ZKSignerSecretProvider secretProviderB =
spy(new ZKSignerSecretProvider(seedB));
ZKSignerSecretProvider secretProviderC =
spy(new ZKSignerSecretProvider(seedC));
byte[] secretB3 = Long.toString(rand.nextLong()).getBytes();
byte[] secretB4 = Long.toString(rand.nextLong()).getBytes();
MockZKSignerSecretProvider secretProviderA =
spy(new MockZKSignerSecretProvider(seedA));
MockZKSignerSecretProvider secretProviderB =
spy(new MockZKSignerSecretProvider(seedB));
Properties config = new Properties();
config.setProperty(
ZKSignerSecretProvider.ZOOKEEPER_CONNECTION_STRING,
@ -131,106 +177,23 @@ public class TestZKSignerSecretProvider {
try {
secretProviderA.init(config, getDummyServletContext(), rolloverFrequency);
secretProviderB.init(config, getDummyServletContext(), rolloverFrequency);
secretProviderC.init(config, getDummyServletContext(), rolloverFrequency);
byte[] currentSecretA = secretProviderA.getCurrentSecret();
byte[][] allSecretsA = secretProviderA.getAllSecrets();
byte[] currentSecretB = secretProviderB.getCurrentSecret();
byte[][] allSecretsB = secretProviderB.getAllSecrets();
byte[] currentSecretC = secretProviderC.getCurrentSecret();
byte[][] allSecretsC = secretProviderC.getAllSecrets();
Assert.assertArrayEquals(currentSecretA, currentSecretB);
Assert.assertArrayEquals(currentSecretB, currentSecretC);
Assert.assertArrayEquals(secretA1, currentSecretA);
Assert.assertArrayEquals(secretA1, currentSecretB);
Assert.assertEquals(2, allSecretsA.length);
Assert.assertEquals(2, allSecretsB.length);
Assert.assertEquals(2, allSecretsC.length);
Assert.assertArrayEquals(allSecretsA[0], allSecretsB[0]);
Assert.assertArrayEquals(allSecretsB[0], allSecretsC[0]);
Assert.assertArrayEquals(secretA1, allSecretsA[0]);
Assert.assertArrayEquals(secretA1, allSecretsB[0]);
Assert.assertNull(allSecretsA[1]);
Assert.assertNull(allSecretsB[1]);
Assert.assertNull(allSecretsC[1]);
char secretChosen = 'z';
if (Arrays.equals(secretA1, currentSecretA)) {
Assert.assertArrayEquals(secretA1, allSecretsA[0]);
secretChosen = 'A';
} else if (Arrays.equals(secretB1, currentSecretB)) {
Assert.assertArrayEquals(secretB1, allSecretsA[0]);
secretChosen = 'B';
}else if (Arrays.equals(secretC1, currentSecretC)) {
Assert.assertArrayEquals(secretC1, allSecretsA[0]);
secretChosen = 'C';
} else {
Assert.fail("It appears that they all agreed on the same secret, but "
+ "not one of the secrets they were supposed to");
}
verify(secretProviderA, timeout(timeout).times(1)).rollSecret();
verify(secretProviderB, timeout(timeout).times(1)).rollSecret();
verify(secretProviderC, timeout(timeout).times(1)).rollSecret();
currentSecretA = secretProviderA.getCurrentSecret();
allSecretsA = secretProviderA.getAllSecrets();
currentSecretB = secretProviderB.getCurrentSecret();
allSecretsB = secretProviderB.getAllSecrets();
currentSecretC = secretProviderC.getCurrentSecret();
allSecretsC = secretProviderC.getAllSecrets();
Assert.assertArrayEquals(currentSecretA, currentSecretB);
Assert.assertArrayEquals(currentSecretB, currentSecretC);
Assert.assertEquals(2, allSecretsA.length);
Assert.assertEquals(2, allSecretsB.length);
Assert.assertEquals(2, allSecretsC.length);
Assert.assertArrayEquals(allSecretsA[0], allSecretsB[0]);
Assert.assertArrayEquals(allSecretsB[0], allSecretsC[0]);
Assert.assertArrayEquals(allSecretsA[1], allSecretsB[1]);
Assert.assertArrayEquals(allSecretsB[1], allSecretsC[1]);
// The second secret used is prechosen by whoever won the init; so it
// should match with whichever we saw before
if (secretChosen == 'A') {
Assert.assertArrayEquals(secretA2, currentSecretA);
} else if (secretChosen == 'B') {
Assert.assertArrayEquals(secretB2, currentSecretA);
} else if (secretChosen == 'C') {
Assert.assertArrayEquals(secretC2, currentSecretA);
}
} finally {
secretProviderC.destroy();
secretProviderB.destroy();
secretProviderA.destroy();
}
}
@Test
public void testMultipleUnsychnronized() throws Exception {
long seedA = System.currentTimeMillis();
Random rand = new Random(seedA);
byte[] secretA2 = Long.toString(rand.nextLong()).getBytes();
byte[] secretA1 = Long.toString(rand.nextLong()).getBytes();
byte[] secretA3 = Long.toString(rand.nextLong()).getBytes();
// use the same seed so we can predict the RNG
long seedB = System.currentTimeMillis() + rand.nextLong();
rand = new Random(seedB);
byte[] secretB2 = Long.toString(rand.nextLong()).getBytes();
byte[] secretB1 = Long.toString(rand.nextLong()).getBytes();
byte[] secretB3 = Long.toString(rand.nextLong()).getBytes();
ZKSignerSecretProvider secretProviderA =
spy(new ZKSignerSecretProvider(seedA));
ZKSignerSecretProvider secretProviderB =
spy(new ZKSignerSecretProvider(seedB));
Properties config = new Properties();
config.setProperty(
ZKSignerSecretProvider.ZOOKEEPER_CONNECTION_STRING,
zkServer.getConnectString());
config.setProperty(ZKSignerSecretProvider.ZOOKEEPER_PATH,
"/secret");
try {
secretProviderA.init(config, getDummyServletContext(), rolloverFrequency);
byte[] currentSecretA = secretProviderA.getCurrentSecret();
byte[][] allSecretsA = secretProviderA.getAllSecrets();
Assert.assertArrayEquals(secretA1, currentSecretA);
Assert.assertEquals(2, allSecretsA.length);
Assert.assertArrayEquals(secretA1, allSecretsA[0]);
Assert.assertNull(allSecretsA[1]);
verify(secretProviderA, timeout(timeout).times(1)).rollSecret();
verify(secretProviderA, timeout(timeout).atLeastOnce()).rollSecret();
verify(secretProviderB, timeout(timeout).atLeastOnce()).rollSecret();
secretProviderA.realRollSecret();
secretProviderB.realRollSecret();
currentSecretA = secretProviderA.getCurrentSecret();
allSecretsA = secretProviderA.getAllSecrets();
@ -238,18 +201,32 @@ public class TestZKSignerSecretProvider {
Assert.assertEquals(2, allSecretsA.length);
Assert.assertArrayEquals(secretA2, allSecretsA[0]);
Assert.assertArrayEquals(secretA1, allSecretsA[1]);
Thread.sleep((rolloverFrequency / 5));
secretProviderB.init(config, getDummyServletContext(), rolloverFrequency);
byte[] currentSecretB = secretProviderB.getCurrentSecret();
byte[][] allSecretsB = secretProviderB.getAllSecrets();
currentSecretB = secretProviderB.getCurrentSecret();
allSecretsB = secretProviderB.getAllSecrets();
Assert.assertArrayEquals(secretA2, currentSecretB);
Assert.assertEquals(2, allSecretsA.length);
Assert.assertArrayEquals(secretA2, allSecretsB[0]);
Assert.assertArrayEquals(secretA1, allSecretsB[1]);
verify(secretProviderA, timeout(timeout).times(2)).rollSecret();
verify(secretProviderB, timeout(timeout).times(1)).rollSecret();
verify(secretProviderA, timeout(timeout).atLeast(2)).rollSecret();
verify(secretProviderB, timeout(timeout).atLeastOnce()).rollSecret();
switch (order) {
case 1:
secretProviderA.realRollSecret();
secretProviderB.realRollSecret();
secretProviderA.realRollSecret();
secretProviderB.realRollSecret();
break;
case 2:
secretProviderB.realRollSecret();
secretProviderA.realRollSecret();
secretProviderB.realRollSecret();
secretProviderA.realRollSecret();
break;
default:
throw new Exception("Invalid order selected");
}
currentSecretA = secretProviderA.getCurrentSecret();
allSecretsA = secretProviderA.getAllSecrets();
@ -260,13 +237,13 @@ public class TestZKSignerSecretProvider {
Assert.assertEquals(2, allSecretsB.length);
Assert.assertArrayEquals(allSecretsA[0], allSecretsB[0]);
Assert.assertArrayEquals(allSecretsA[1], allSecretsB[1]);
if (Arrays.equals(secretA3, currentSecretA)) {
Assert.assertArrayEquals(secretA3, allSecretsA[0]);
} else if (Arrays.equals(secretB3, currentSecretB)) {
Assert.assertArrayEquals(secretB3, allSecretsA[0]);
} else {
Assert.fail("It appears that they all agreed on the same secret, but "
+ "not one of the secrets they were supposed to");
switch (order) {
case 1:
Assert.assertArrayEquals(secretA4, allSecretsA[0]);
break;
case 2:
Assert.assertArrayEquals(secretB4, allSecretsA[0]);
break;
}
} finally {
secretProviderB.destroy();