Hi.
When I tried to test join notifications, I found some problems.
Assuming that "A", "B" and "C" are members in "TestGroup". Sometimes when new member join, this member can't receive join notifications of others that already joined.
This scenario is following.
1. First, "A" joined and became a group leader.
2. after 1, "B" joined. Then "B" received "A"'s a join notification and own("C") join notification in "B". No problem.
3. after 2, "C" joined. At this time, "C" must receive "A", "B" and "C" join notifications in "C". But "C" didn't receive "B"'s a join notification.
Like above, assuming that "A", "B", "C" and "D" are members in "TestGroup", "D" didn't receive "B" and "C"'s join notifications.
I think there are some bugs.
(a) above 1, the group leader don't receive own join notification.
(b) above 3, when new member joined, this member don't receive some members' join notifications.(In other words, this member receives only own notification and group leader's notification)
You can also see this result from following logs.
"A"(the group leader): member id="6a92713c-d83e-49a8-8aaa-ad12046a1acb"
"B": member id="77ff0a1c-b9a1-417a-b04c-0028ef6da921"
"C": member id="6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a"
When memebers receive a join notification, "***JoinNotification received: ServerName = [MY_MEMBER_ID], Signal.getMemberToken() = [MEMBER_ID]" printed.
["A"'s log]
------------------------------------------------------------------------
2008. 6. 5 오후 1:36:17 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Starting SimpleJoinTest....
2008. 6. 5 오후 1:36:18 com.sun.enterprise.shoal.jointest.SimpleJoinTest initializeGMS
정보: Initializing Shoal for member: 6a92713c-d83e-49a8-8aaa-ad12046a1acb group:TestGroup
2008. 6. 5 오후 1:36:18 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Registering for group event notifications
2008. 6. 5 오후 1:36:18 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Joining Group TestGroup
2008. 6. 5 오후 1:36:18 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
2008. 6. 5 오후 1:36:18 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : MASTER_CHANGE_EVENT
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
2: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : ADD_EVENT
2008. 6. 5 오후 1:36:44 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 6a92713c-d83e-49a8-8aaa-ad12046a1acb, Signal.getMemberToken() = 77ff0a1c-b9a1-417a-b04c-0028ef6da921
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE0F6B7D5CD8CC447180F2D059E273AD5103
2: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
3: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : ADD_EVENT
2008. 6. 5 오후 1:37:03 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 6a92713c-d83e-49a8-8aaa-ad12046a1acb, Signal.getMemberToken() = 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a
------------------------------------------------------------------------
"A"'s log don't have own join notification(6a92713c-d83e-49a8-8aaa-ad12046a1acb).
["B"'s log]
------------------------------------------------------------------------
2008. 6. 5 오후 1:36:40 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Starting SimpleJoinTest....
2008. 6. 5 오후 1:36:40 com.sun.enterprise.shoal.jointest.SimpleJoinTest initializeGMS
정보: Initializing Shoal for member: 77ff0a1c-b9a1-417a-b04c-0028ef6da921 group:TestGroup
2008. 6. 5 오후 1:36:40 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Registering for group event notifications
2008. 6. 5 오후 1:36:40 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Joining Group TestGroup
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : MASTER_CHANGE_EVENT
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
2: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : MASTER_CHANGE_EVENT
2008. 6. 5 오후 1:36:41 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 77ff0a1c-b9a1-417a-b04c-0028ef6da921, Signal.getMemberToken() = 6a92713c-d83e-49a8-8aaa-ad12046a1acb
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
2: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:36:41 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : ADD_EVENT
2008. 6. 5 오후 1:36:41 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 77ff0a1c-b9a1-417a-b04c-0028ef6da921, Signal.getMemberToken() = 77ff0a1c-b9a1-417a-b04c-0028ef6da921
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE0F6B7D5CD8CC447180F2D059E273AD5103
2: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
3: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : ADD_EVENT
2008. 6. 5 오후 1:37:00 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 77ff0a1c-b9a1-417a-b04c-0028ef6da921, Signal.getMemberToken() = 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a
------------------------------------------------------------------------
["C"'s log]
------------------------------------------------------------------------
2008. 6. 5 오후 1:36:59 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Starting SimpleJoinTest....
2008. 6. 5 오후 1:36:59 com.sun.enterprise.shoal.jointest.SimpleJoinTest initializeGMS
정보: Initializing Shoal for member: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a group:TestGroup
2008. 6. 5 오후 1:36:59 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Registering for group event notifications
2008. 6. 5 오후 1:36:59 com.sun.enterprise.shoal.jointest.SimpleJoinTest runSimpleSample
정보: Joining Group TestGroup
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE0F6B7D5CD8CC447180F2D059E273AD5103
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : MASTER_CHANGE_EVENT
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE0F6B7D5CD8CC447180F2D059E273AD5103
2: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : MASTER_CHANGE_EVENT
2008. 6. 5 오후 1:37:00 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, Signal.getMemberToken() = 6a92713c-d83e-49a8-8aaa-ad12046a1acb
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow getMemberTokens
정보: GMS View Change Received for group TestGroup : Members in view for (before change analysis) are :
1: MemberId: 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE0F6B7D5CD8CC447180F2D059E273AD5103
2: MemberId: 6a92713c-d83e-49a8-8aaa-ad12046a1acb, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CE15F3706F0E794BF595FCEE9EEA90FCE103
3: MemberId: 77ff0a1c-b9a1-417a-b04c-0028ef6da921, MemberType: CORE, Address: urn:jxta:uuid-0836778E36C54F728D5B934A965395CEC9482BF0C6A44D55B407E7E3A8D1339803
2008. 6. 5 오후 1:37:00 com.sun.enterprise.ee.cms.impl.jxta.ViewWindow newViewObserved
정보: Analyzing new membership snapshot received as part of event : ADD_EVENT
2008. 6. 5 오후 1:37:00 com.sun.enterprise.shoal.jointest.SimpleJoinTest$JoinNotificationCallBack processNotification
정보: ***JoinNotification received: ServerName = 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a, Signal.getMemberToken() = 6a8e7161-92ef-4b9e-a5e1-d9a8c7665b4a
------------------------------------------------------------------------
"C"'s log don't have "B"'s join notification(77ff0a1c-b9a1-417a-b04c-0028ef6da921).
And I attached a simple test code.
PS) When I call GMSFactory.startGMSModule() without properties param(like null), simple NPE occurred. The following is exception.
------------------------------------------------------------------------
Exception in thread "main" java.lang.NullPointerException
at com.sun.enterprise.jxtamgmt.ClusterManager.<init>(ClusterManager.java:161)
at com.sun.enterprise.ee.cms.impl.jxta.GroupCommunicationProviderImpl.initializeGroupCommunicationProvider(GroupCommunicationProviderImpl.java:138)
at com.sun.enterprise.ee.cms.impl.jxta.GMSContext.join(GMSContext.java:122)
at com.sun.enterprise.ee.cms.impl.common.GroupManagementServiceImpl.join(GroupManagementServiceImpl.java:331)
at com.sun.enterprise.shoal.jointest.SimpleJoinTest.runSimpleSample(SimpleJoinTest.java:40)
at com.sun.enterprise.shoal.jointest.SimpleJoinTest.main(SimpleJoinTest.java:20)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
------------------------------------------------------------------------
In ClusterManager.java:161
------------------------------------------------------------------------
this.bindInterfaceAddress = (String)props.get(JxtaConfigConstants.BIND_INTERFACE_ADDRESS.toString());
------------------------------------------------------------------------
Maybe, this is "Fix for the power outage issue"'s side-effect by sheetalv. :-)
--
Bongjae Chang