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CLOUDSTACK-9348: Optimize NioTest and NioConnection main loop

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- Reduces SSL handshake timeout to 15s, previously this was only 10s in
  commit debfcdef788ce0d51be06db0ef10f6815f9b563b
- Adds an aggresive explicit wakeup to save the Nio main IO loop/handler from
  getting blocked
- Fix NioTest to fail/succeed in about 60s, previously this was 300s
- Due to aggresive wakeup usage, NioTest should complete in less than 5s on most
  systems. On virtualized environment this may slightly increase due to thread,
  CPU burst/scheduling delays.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
This commit is contained in:
Rohit Yadav 2016-05-05 23:19:33 +05:30
parent 6d0c92be72
commit ea22869593
3 changed files with 18 additions and 11 deletions
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4
utils/src/main/java/com/cloud/utils/nio/Link.java
View File

@ -596,8 +596,8 @@ public class Link {
while (handshakeStatus != SSLEngineResult.HandshakeStatus.FINISHED
&& handshakeStatus != SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING) {
final long timeTaken = System.currentTimeMillis() - startTimeMills;
if (timeTaken > 60000L) {
s_logger.warn("SSL Handshake has taken more than 60s to connect to: " + socketChannel.getRemoteAddress() +
if (timeTaken > 15000L) {
s_logger.warn("SSL Handshake has taken more than 15s to connect to: " + socketChannel.getRemoteAddress() +
". Please investigate this connection.");
return false;
}

2
utils/src/main/java/com/cloud/utils/nio/NioConnection.java
View File

@ -171,6 +171,8 @@ public abstract class NioConnection implements Callable<Boolean> {
} catch (final IOException e) {
s_logger.error("Agent will die due to this IOException!", e);
throw new NioConnectionException(e.getMessage(), e);
} finally {
_selector.wakeup();
}
}
_isStartup = false;

23
utils/src/test/java/com/cloud/utils/testcase/NioTest.java
View File

@ -61,9 +61,9 @@ public class NioTest {
private static final Logger LOGGER = Logger.getLogger(NioTest.class);
// Test should fail in due time instead of looping forever
private static final int TESTTIMEOUT = 300000;
private static final int TESTTIMEOUT = 60000;
final private int totalTestCount = 5;
final private int totalTestCount = 4;
private int completedTestCount = 0;
private NioServer server;
@ -71,7 +71,7 @@ public class NioTest {
private List<NioClient> maliciousClients = new ArrayList<>();
private ExecutorService clientExecutor = Executors.newFixedThreadPool(totalTestCount, new NamedThreadFactory("NioClientHandler"));;
private ExecutorService maliciousExecutor = Executors.newFixedThreadPool(5*totalTestCount, new NamedThreadFactory("MaliciousNioClientHandler"));;
private ExecutorService maliciousExecutor = Executors.newFixedThreadPool(totalTestCount, new NamedThreadFactory("MaliciousNioClientHandler"));;
private Random randomGenerator = new Random();
private byte[] testBytes;
@ -105,12 +105,18 @@ public class NioTest {
Assert.fail(e.getMessage());
}
/**
* The malicious client(s) tries to block NioServer's main IO loop
* thread until SSL handshake timeout value (from Link class, 15s) after
* which the valid NioClient(s) get the opportunity to make connection(s)
*/
for (int i = 0; i < totalTestCount; i++) {
final NioClient maliciousClient = new NioMaliciousClient("NioMaliciousTestClient-" + i, "127.0.0.1", server.getPort(), 1, new NioMaliciousTestClient());
maliciousClients.add(maliciousClient);
maliciousExecutor.submit(new ThreadedNioClient(maliciousClient));
}
for (int i = 0; i < totalTestCount; i++) {
for (int j = 0; j < 4; j++) {
final NioClient maliciousClient = new NioMaliciousClient("NioMaliciousTestClient-" + i, "127.0.0.1", server.getPort(), 1, new NioMaliciousTestClient());
maliciousClients.add(maliciousClient);
maliciousExecutor.submit(new ThreadedNioClient(maliciousClient));
}
final NioClient client = new NioClient("NioTestClient-" + i, "127.0.0.1", server.getPort(), 1, new NioTestClient());
clients.add(client);
clientExecutor.submit(new ThreadedNioClient(client));
@ -286,7 +292,6 @@ public class NioTest {
LOGGER.info("Server: Received OTHER task");
}
}
}
}
}