qpid-jms git commit: Add test for creating many connections at once to try and reproduce some hangs that happen infrequently on create of a new connection.

[ta...@apache.org]

Repository: qpid-jms
Updated Branches:
  refs/heads/master 109bb5a38 -> eb9a58b39


Add test for creating many connections at once to try and reproduce some
hangs that happen infrequently on create of a new connection.

Project: http://git-wip-us.apache.org/repos/asf/qpid-jms/repo
Commit: http://git-wip-us.apache.org/repos/asf/qpid-jms/commit/eb9a58b3
Tree: http://git-wip-us.apache.org/repos/asf/qpid-jms/tree/eb9a58b3
Diff: http://git-wip-us.apache.org/repos/asf/qpid-jms/diff/eb9a58b3

Branch: refs/heads/master
Commit: eb9a58b3961813ae0fd6b899183209fef1fb7609
Parents: 109bb5a
Author: Timothy Bish <ta...@gmail.com>
Authored: Wed Jan 14 13:49:00 2015 -0500
Committer: Timothy Bish <ta...@gmail.com>
Committed: Wed Jan 14 13:49:00 2015 -0500

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 .../jms/JmsConnectionInRandomBatchesTest.java   | 104 +++++++++++++++++++
 1 file changed, 104 insertions(+)
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http://git-wip-us.apache.org/repos/asf/qpid-jms/blob/eb9a58b3/qpid-jms-interop-tests/qpid-jms-activemq-tests/src/test/java/org/apache/qpid/jms/JmsConnectionInRandomBatchesTest.java
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diff --git a/qpid-jms-interop-tests/qpid-jms-activemq-tests/src/test/java/org/apache/qpid/jms/JmsConnectionInRandomBatchesTest.java b/qpid-jms-interop-tests/qpid-jms-activemq-tests/src/test/java/org/apache/qpid/jms/JmsConnectionInRandomBatchesTest.java
new file mode 100644
index 0000000..78cf03d
--- /dev/null
+++ b/qpid-jms-interop-tests/qpid-jms-activemq-tests/src/test/java/org/apache/qpid/jms/JmsConnectionInRandomBatchesTest.java
@@ -0,0 +1,104 @@
+/**
+ * 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.qpid.jms;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+import javax.jms.Connection;
+
+import org.apache.qpid.jms.support.AmqpTestSupport;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Test for creation of several open connections in a series of randomly
+ * sized batches over time.
+ */
+public class JmsConnectionInRandomBatchesTest extends AmqpTestSupport  {
+
+    private final List<Connection> batch = new ArrayList<Connection>();
+    private final Random batchSizeGenerator = new Random();
+
+    private final int RANDOM_SIZE_MARKER = -1;
+    private final int MAX_BATCH_SIZE = 20;
+    private final int MAX_BATCH_ITERATIONS = 10;
+
+    @Override
+    @Before
+    public void setUp() throws Exception {
+        batchSizeGenerator.setSeed(System.nanoTime());
+        super.setUp();
+    }
+
+    @Override
+    @After
+    public void tearDown() throws Exception {
+        doCloseConnectionBatch();
+        super.tearDown();
+    }
+
+    @Test
+    public void testSingleBatch() throws Exception {
+        doCreateConnectionBatch(MAX_BATCH_SIZE);
+    }
+
+    @Test
+    public void testCreateManyBatches() throws Exception {
+        doCreateConnectionInBatches(MAX_BATCH_ITERATIONS, MAX_BATCH_SIZE);
+    }
+
+    @Test
+    public void testCreateRandomSizedBatches() throws Exception {
+        doCreateConnectionInBatches(MAX_BATCH_ITERATIONS, RANDOM_SIZE_MARKER);
+    }
+
+    private void doCreateConnectionInBatches(int count, int size) throws Exception {
+        for (int i = 0; i < count; ++i) {
+            if (size != RANDOM_SIZE_MARKER) {
+                doCreateConnectionBatch(size);
+            } else {
+                doCreateConnectionBatch(getNextBatchSize());
+            }
+            doCloseConnectionBatch();
+        }
+    }
+
+    private void doCreateConnectionBatch(int size) throws Exception {
+        for (int i = 0; i < size; ++i) {
+            batch.add(createAmqpConnection());
+            batch.get(i).start();
+        }
+    }
+
+    private void doCloseConnectionBatch() {
+        for (Connection connection : batch) {
+            try {
+                connection.close();
+            } catch (Exception ex) {
+            }
+        }
+
+        batch.clear();
+    }
+
+    private int getNextBatchSize() {
+        return batchSizeGenerator.nextInt(MAX_BATCH_SIZE) + 1;
+    }
+}


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