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Posted to dev@tomcat.apache.org by kk...@apache.org on 2011/09/28 22:36:42 UTC
svn commit: r1177050 -
/tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java
Author: kkolinko
Date: Wed Sep 28 20:36:42 2011
New Revision: 1177050
URL: http://svn.apache.org/viewvc?rev=1177050&view=rev
Log:
Improve TestGroupChannelMemberArrival
1. Add synchronization when accessing TestMbrListener.members.
This should fix the failures observed by Gump.
2. Remove unused method #clear().
3. Improve messages printed to System.out during the test:
- Add timestamps
- Add hash code of threads (because thread names are not unique: They all are either "Membership-MemberAdded." or "Membership-MemberDisappeared.").
- Add current length of members list
4. Print messages when memberAdded()/memberDisappeared() performed no work.
That is if notification arrives twice for the same Member. I have not observed such events when running the tests.
Modified:
tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java
Modified: tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java
URL: http://svn.apache.org/viewvc/tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java?rev=1177050&r1=1177049&r2=1177050&view=diff
==============================================================================
--- tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java (original)
+++ tomcat/trunk/test/org/apache/catalina/tribes/group/TestGroupChannelMemberArrival.java Wed Sep 28 20:36:42 2011
@@ -41,13 +41,6 @@ public class TestGroupChannelMemberArriv
channels[i].getMembershipService().setPayload( ("Channel-" + (i + 1)).getBytes("ASCII"));
listeners[i] = new TestMbrListener( ("Listener-" + (i + 1)));
channels[i].addMembershipListener(listeners[i]);
-
- }
- }
-
- public void clear() {
- for (int i = 0; i < channels.length; i++) {
- listeners[i].members.clear();
}
}
@@ -70,11 +63,24 @@ public class TestGroupChannelMemberArriv
};
threads[i] = t;
}
- for (int i=0; i<threads.length; i++ ) threads[i].start();
- for (int i=0; i<threads.length; i++ ) threads[i].join();
+ for (int i = 0; i < threads.length; i++) {
+ threads[i].start();
+ }
+ for (int i = 0; i < threads.length; i++) {
+ threads[i].join();
+ }
Thread.sleep(2000);
- System.out.println("All channels started.");
- for (int i=listeners.length-1; i>=0; i-- ) assertEquals("Checking member arrival length",channels.length-1,listeners[i].members.size());
+ System.out.println(System.currentTimeMillis()
+ + " All channels started.");
+ for (int i = listeners.length - 1; i >= 0; i--) {
+ TestMbrListener listener = listeners[i];
+ synchronized (listener.members) {
+ assertEquals("Checking member arrival length (" + listener.name
+ + ")", channels.length - 1, listener.members.size());
+ }
+ }
+ System.out.println(System.currentTimeMillis()
+ + " Members arrival counts checked.");
}
@After
@@ -96,31 +102,55 @@ public class TestGroupChannelMemberArriv
this.name = name;
}
- public ArrayList<Member> members = new ArrayList<Member>();
+ public ArrayList<Member> members = new ArrayList<Member>(1);
+
@Override
public void memberAdded(Member member) {
- if (!members.contains(member)) {
- members.add(member);
- try {
- System.out.println(name + ":member added[" + new String(member.getPayload(), "ASCII") + "; Thread:"+Thread.currentThread().getName()+"]");
- } catch (Exception x) {
- System.out.println(name + ":member added[unknown]");
+ String msg;
+ int count;
+ synchronized (members) {
+ if (!members.contains(member)) {
+ members.add(member);
+ msg = "member added";
+ } else {
+ msg = "member added called, but member is already in the list";
}
+ count = members.size();
}
+ report(msg, member, count);
}
@Override
public void memberDisappeared(Member member) {
- if (members.contains(member)) {
- members.remove(member);
- try {
- System.out.println(name + ":member disappeared[" + new String(member.getPayload(), "ASCII") + "; Thread:"+Thread.currentThread().getName()+"]");
- } catch (Exception x) {
- System.out.println(name + ":member disappeared[unknown]");
+ String msg;
+ int count;
+ synchronized (members) {
+ if (members.contains(member)) {
+ members.remove(member);
+ msg = "member disappeared";
+ } else {
+ msg = "member disappeared called, but there is no such member in the list";
}
+ count = members.size();
}
+ report(msg, member, count);
}
+ private void report(String event, Member member, int count) {
+ StringBuilder message = new StringBuilder(100);
+ message.append(System.currentTimeMillis()).append(' ').append(name)
+ .append(':').append(event).append(", has ").append(count)
+ .append(" members now. Member:[");
+ try {
+ message.append(new String(member.getPayload(), "ASCII"));
+ } catch (Exception x) {
+ message.append("unknown");
+ }
+ Thread t = Thread.currentThread();
+ message.append("]; Thread:").append(t.getName()).append(", hash:")
+ .append(t.hashCode());
+ System.out.println(message);
+ }
}
}
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