Webmethods:How to Kill a Running Service from the Integration Server

Many of you have wondered how to kill a WebMethods service while its running on the Integration Server.

Its become a Pet Interview Question for many but the interviewer also expects one of the following facts which is not the most recommended method to kill a running service.

Here are some facts:

1. If you are running the service on debug mode, the service will get killed if you kill your developer.
2. If you are running the service on RUN mode, the service runs on the Integration Server and will not get killed.
3. If your client has activated the service but terminated the session, the service will still run on the IS.
4. If your webmethod service is hung, You will try to Reload the entire package. But this will NOT help.
5. You will also try to unload the package but this will NOT help too.

What you need to do is on a Thread Level. The idea is quite simple: Just get the list of all the current running threads and kill the service which you need.

I will try to explain this in a step by step manner. Developers please do try it out on your dev boxes as well.

Step 1:
Create a Flow service like this:

wm1

Step 2:
Lets create a Flow service which will get ALL running threads. This should take NO input but lets output a String containing all running threads on that Integration Server.

w2

Step 3:

Insert the following Java Code in your WebMethods Flow Service that you just created. The code is commented well enough.

//—BEGIN CODE—–
// Author: Hussain Fakhruddin (hussulinux@gmail.com)
// Date: 20090128
//Get the Current Thread
Thread currentThread = Thread.currentThread();
//Get all Thread Groups.
ThreadGroup rootThreadGroup = currentThread.getThreadGroup();
//Traverse to the Top Thread Level
while (rootThreadGroup.getParent() != null) {
rootThreadGroup  = rootThreadGroup.getParent();
}
//Getting all Threads
Thread [] threads = new Thread[1000];
int threadCount = rootThreadGroup.enumerate(threads, true);
String threadList = “”;
// Now traverse through all the Threads and use the ServerThread API from webmethods to get all the thread detail.
int i=0;
for (; i<threadCount ; ++i){
if (threads[i] instanceof com.wm.app.b2b.server.ServerThread) {
//Casting a raw thread into ServerThread type
com.wm.app.b2b.server.ServerThread serverThread = (com.wm.app.b2b.server.ServerThread) threads[i];
//Getting the service Name for which the thread belongs to
if (serverThread.getState().getService() != null){
threadList = threadList + serverThread.getState().toString() ;
java.util.Stack threadStack = (java.util.Stack) serverThread.getState().getCallStack();
for (Iterator iter=threadStack.iterator(); iter.hasNext();) {
Object threadObj = iter.next();
threadList = threadList + “\n ” + threadObj.getClass().getName();
threadList = threadList + “, ” + threadObj.toString();
}
}
}
}
IDataCursor cursor = pipeline.getCursor();
cursor.insertAfter(“threads”, threadList);
cursor.destroy();

//—–END OF CODE—–

Step 4: Now lets create another flow service “killThread” with the following inputs and outputs

wm3

Step 5: Now copy paste the following code. We’re going to traverse through the entire list and call the .interrupt() method to kill the process. Note: you need to provide FULL path of the service which you want to kill. You can get the full path from the webmethods admin panel (under package management).

//—BEGIN CODE—–
// Author: Hussain Fakhruddin(hussulinux@gmail.com)
// Date: 20090128
IDataCursor cursor = pipeline.getCursor ();
if (cursor.first (“serviceName”)) {
String serviceName = (String) cursor.getValue ();
Thread current = Thread.currentThread ();
ThreadGroup root = current.getThreadGroup ();
while (root.getParent () != null) {
root = root.getParent ();
}
Thread [] threads = new Thread [1000];
int count = root.enumerate (threads, true);
String sb = “Not Found”;
StringBuffer killedList = new StringBuffer ();
for (int i=0; i<count; i++) {
if (threads[i] instanceof com.wm.app.b2b.server.ServerThread) {
com.wm.app.b2b.server.ServerThread serverThread = (com.wm.app.b2b.server.ServerThread) threads[i];
if (serverThread.getState ().getService () != null) {
java.util.Stack stack = (java.util.Stack) serverThread.getState ().getCallStack ();
for (Iterator iter=stack.iterator (); iter.hasNext ();) {
Object obj = iter.next ();
String name = obj.toString ();
if (name.trim().equals (serviceName)) {
threads[i].interrupt ();
sb = “Interrupted”;
killedList.append (stack.toString ()).append (“\n”);
}
}
}
}
}
cursor.insertAfter (“status”, sb);
cursor.insertAfter (“killedList”, killedList.toString ());
cursor.destroy ();
}
//—–END OF CODE—–

That’s it folks! Save and run it.. Come back to me if you face problems..

79 thoughts on “Webmethods:How to Kill a Running Service from the Integration Server

  1. Stanley

    Hi Hussain,

    Thanks for this wonderful post on webmethods. Our company has been trying this out since long time and you’ve created just the right way….

    I will be implementing this in our UAT environment right away and send out for testing.

    Could you please pass me your email id, I’d like to discuss more things with you privately.

    Regards,

    Stanley
    Head of Technological Services,
    Cansoft India Pvt.Ltd.

  2. Sirat Moin

    Hussain,

    Excellent work as well. Although, I am not in webmethods integration now days, but i remembered that stopping a service that is long running was not possible.

    Excellent work and all the very best and keep blogging. You ignited me to start blogging as well [;)]

    Sirat Moin,
    Sr. Integration Consultant

  3. Yudi Ivankof

    Really a neat way to kill. I was just amazed we could use simple Java and stop the services… Ive tried this and it worked although I had doubts…!! Thanks a lot…! Can I have your email address, I would like to discuss a few more things with you.

    Yudi Ivankof.
    Project Manager,Romanian Technological Services.

  4. Sundar Patnaik

    I tried to run the service found following errors . Please help.

    /opt/webmethods71/IntegrationServer/packages/N045605/code/source/N045605/utils.java:65: cannot find symbol
    symbol : method getService()
    location: class java.lang.Thread.State
    if (serverThread.getState().getService() != null){
    ^
    /opt/webmethods71/IntegrationServer/packages/N045605/code/source/N045605/utils.java:67: cannot find symbol
    symbol : method getCallStack()
    location: class java.lang.Thread.State
    java.util.Stack threadStack = (java.util.Stack) serverThread.getState().getCallStack();

  5. Francis

    Hi Hussain,

    Thanks for the great tool. I’m sure this will be helpfull, but I am also having the same error.

    What server librairies are you talking about exactly?

    Thanks in advance for your help.

    ————-

    /wmbadv1/IntegrationServer/packages/ft_temp/code/source/ft_temp.java:64: cannot find symbol
    symbol : method getService()
    location: class java.lang.Thread.State
    if (serverThread.getState().getService() != null){
    ^
    /wmbadv1/IntegrationServer/packages/ft_temp/code/source/ft_temp.java:66: cannot find symbol
    symbol : method getCallStack()
    location: class java.lang.Thread.State
    java.util.Stack threadStack = (java.util.Stack) serverThread.getState().getCallStack();
    ^
    2 errors

  6. Sundar Patnaik

    Francis,

    Looks like getState() is deprecated now. Try the following,it works..

    ————————

    IDataCursor cursor = pipeline.getCursor ();
    if (cursor.first (“serviceName”)) {
    String serviceName = (String) cursor.getValue ();
    Thread current = Thread.currentThread ();
    ThreadGroup root = current.getThreadGroup ();
    while (root.getParent () != null) {
    root = root.getParent ();
    }
    Thread [] threads = new Thread [1000];
    int count = root.enumerate (threads, true);
    String sb = “Not Found”;
    StringBuffer killedList = new StringBuffer ();
    for (int i=0; i<count; i++) {
    if (threads[i] instanceof com.wm.app.b2b.server.ServerThread) {
    com.wm.app.b2b.server.ServerThread serverThread = (com.wm.app.b2b.server.ServerThread) threads[i];
    if (serverThread.getInvokeState ().getService () != null) {
    java.util.Stack stack = (java.util.Stack) serverThread.getInvokeState ().getCallStack ();
    for (Iterator iter=stack.iterator (); iter.hasNext ();) {
    Object obj = iter.next ();
    String name = obj.toString ();
    if (name.trim().equals (serviceName)) {
    threads[i].interrupt ();
    sb = “Interrupted”;
    killedList.append (stack.toString ()).append (“\n”);
    }
    }
    }
    }
    }
    cursor.insertAfter (“status”, sb);
    cursor.insertAfter (“killedList”, killedList.toString ());
    cursor.destroy ();
    }

  7. Prashant

    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:45: illegal character: \8221
    if (cursor.first (\u201DserviceName\u201D)) {
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:45: illegal character: \8221
    if (cursor.first (\u201DserviceName\u201D)) {
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:54: illegal character: \8220
    String sb = \u201CNot Found\u201D;
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:54: illegal character: \8221
    String sb = \u201CNot Found\u201D;
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:66: illegal character: \8220
    sb = \u201CInterrupted\u201D;
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:66: illegal character: \8221
    sb = \u201CInterrupted\u201D;
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:67: illegal character: \8221
    killedList.append (stack.toString ()).append (\u201D\n\u201D);
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:67: illegal character: \92
    killedList.append (stack.toString ()).append (\u201D\n\u201D);
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:67: illegal character: \8221
    killedList.append (stack.toString ()).append (\u201D\n\u201D);
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:73: illegal character: \8221
    cursor.insertAfter (\u201Dstatus\u201D, sb);
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:73: illegal character: \8221
    cursor.insertAfter (\u201Dstatus\u201D, sb);
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:74: illegal character: \8221
    cursor.insertAfter (\u201DkilledList\u201D, killedList.toString ());
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:74: illegal character: \8221
    cursor.insertAfter (\u201DkilledList\u201D, killedList.toString ());
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:77: ‘)’ expected
    // — <> —
    ^
    /opt/webmethods-dev1/IntegrationServer/packages/N676074/code/source/N676074/utils.java:80: illegal start of expression
    }
    ^
    15 errors

  8. Srinivas Barla

    Prashant,

    It seems you are copying the code from browser and paste that to wM developer.

    Try, using different editor (TextPad) change the quotes to “smart quotes” and then paste that on to webMethods Developer and then compile.

  9. Ishtiyak

    Excellent post Hussain.
    I was wondering if Unix or AIX platform allows you to kill the threads by some of their utilities instead of writing java services, do you something about that?

    Thanks,
    Ishti.

  10. Hussain Fakhruddin Post author

    Hi,

    Actually in Unix /Aix we have processes but as far as Java is concerned, the thread runs under Java environment and we’re trying to kill those threads and not processes.
    We shouldn’t confuse between forked child processes and threads in Java.

    I am not sure if JVM provides any mechanism by which a thread can be killed by some OS call.

    Regards,
    Hussain

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  12. Vara Prasad Kota

    Hi Hussain!

    I see that killing a thread is deprecated in JAVA. Can you pls suggest me whether your utility is safe to interrupt a HUNG service.

  13. VaraPrasad Kota

    I have a scenario where, there were 4 hung threads for the given service and 2 HUNG threads for its child service. When I ran the killThread service, output was perfect. It gave the total list of all the 6 services and status was “Interrupted”. When I checked it in webM IS Console->service usage, I still see the number of HUNG threads as it is.
    Again I ran the service, the output was same(Displayes all the 6 services with status “Interrupted”). If I run 10 times, Im getting the same output, but its not actually Interrupting. Pls advise me on this.

  14. siddi

    Hi Hussain,

    This java code works really well thanks for posting.
    As I have an environment where more than 50 inegration servers are running, in which hung services may come on any server any time.
    if I have to implement above kill thread service in my environment I have to deploy this service in each and every integration service which is quiet heavy. Is there any way we can have this service in common place from where we can kill any IS hung service in the envirronment. ideas are welcome from all.

  15. Hussain Fakhruddin Post author

    You will have to deploy the service to every IS because all IS run on their own JVM and you cannot kill a JVM thread from outside, It will corrupt the memory.

  16. Hussain Fakhruddin Post author

    Usually you need to kill a thread becasue its hung , so you rather not care about doing it gracefully. So this method works perfectly well. If you need thread to die with proper non-depricated API then you’ll have to program it that way.. !

  17. Hussain Fakhruddin Post author

    This is because the thread may be running on a higer priority than your killing program. SO the killing program doesn’t get chance to execute and kill the thread. Check more on priorities.

  18. Jeremy

    Hello,

    I have tried the following :

    1- Created a simple service which repeats on Success and get the current date
    2- I run the service from developer (it runs forever)
    3- I go to my browser and issue the following URL :
    http://IShostname:5454/invoke/JeremyTest.serviceThreads:killThread?serviceName=JeremyTest:loopService
    4- I get the following reply :
    serviceName JeremyTest:loopService
    status Interrupted
    killedList [JeremyTest:loopService, PSUtilities.misc:sleep]
    serviceNameList JeremyTest:loopService

    But when I check Developer, the service is still running with progress bar and when I check running services, the service JeremyTest:loopService is still running as well…

    Please could you advise? It it problem to kill a loop?

    Thanks a lot !


    Jeremy

  19. hari

    I am facing the same problem with 2 errors.
    What server libariaries to be included.
    Please guide me.

    error:

    /opt/WebMethods/is500/IntegrationServer/packages/CommService/code/source/CommService/thread.java:63: cannot find symbol
    symbol : method getService()
    location: class java.lang.Thread.State
    if (serverThread.getState().getService()!= null)
    ^
    /opt/WebMethods/is500/IntegrationServer/packages/CommService/code/source/CommService/thread.java:66: cannot find symbol
    symbol : method getCallStack()
    location: class java.lang.Thread.State
    java.util.Stack threadStack = (java.util.Stack) serverThread.getState().getCallStack();
    ^
    2 errors

  20. Intekhab

    Hi Hussain,

    Greetings to you. I am relatively new to webMethods Java services. I chanced upon your blog and was really very impressed. Please keep blogging it inspires others a great deal.

    Kudos!!!

    Regards
    Intekhab

  21. LizApaza

    Hi,
    i have the same issue that is said like 10 post back the one that put Jeremy!
    1- Created a simple service which repeats on Success and get the current date
    2- I run the service from developer (it runs forever)
    3- I get the following reply :
    serviceName JeremyTest:loopService
    status Interrupted
    killedList [EApaza.mapping:test , pub.string:concat]

    it seems to be that, is not working if your thread inside has an loop element. can anyone answer me this issue? thank you all!!

  22. Kirubakaran

    Hi

    Can anyone help me with below errors,

    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:53: illegal character: \8220
    String threadList = \u201C\u201D;
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:53: illegal character: \8221
    String threadList = \u201C\u201D;
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:66: illegal character: \8220
    threadList = threadList + \u201C\n \u201D + threadObj.getClass().getName();
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:66: illegal character: \92
    threadList = threadList + \u201C\n \u201D + threadObj.getClass().getName();
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:66: illegal character: \8221
    threadList = threadList + \u201C\n \u201D + threadObj.getClass().getName();
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:67: illegal character: \8220
    threadList = threadList + \u201C, \u201D + threadObj.toString();
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:67: illegal character: \8221
    threadList = threadList + \u201C, \u201D + threadObj.toString();
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:73: illegal character: \8220
    cursor.insertAfter(\u201Cthreads\u201D, threadList);
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:73: illegal character: \8221
    cursor.insertAfter(\u201Cthreads\u201D, threadList);
    ^
    /opt/webMethodsBT2Test/IntegrationServer/packages/Default/code/source/karan.java:73: ‘)’ expected
    cursor.insertAfter(\u201Cthreads\u201D, threadList);
    ^
    10 errors

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  25. Ankit

    I guess getService() and getCallStack() methods of serverThread are not able …

    Me too Getting the error on …
    1–>if (serverThread.getState().getService() != null)
    2—>java.util.Stack threadStack = (java.util.Stack) serverThread.getState().getCallStack();

  26. Raj

    Hi Hussain,

    Code seems to be fine ..its displaying hang threads…but its not able to kill the threads even though in output it showing that Status is Interrupted but i observed that that service is still running in IS Admin page.
    Pls let me know if u have any idea .

    Thanks,
    Raj.

  27. hasan Khan

    Excellent Post. I tried implemeting code provided by you however got error Looks like getState() is deprecated now.I have implemented the code provided by Sundar Patnaik.Service is running fine its giving me output for status as Interrupted and services name in killedList.However from Admin page when I checked I can service is still running,Please help

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  30. Darrshini

    Hi Hussain,

    Very useful post for wM users. Thanks a lot. Appreciate your step by step vivid description.
    Though killThreads service displays status as interrupted, admin page shows this service as running.
    Kindly advise me how to stop executing service.

  31. Sasikanth Balachandran

    Thanks a lot for this useful code.

    Is that possible to fetch the timestamp along with running services using java?

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    Vendor is receiving 403 error.
    Is when the IS restarted the previously suspended jobs run again themselves and may preventing new documents to come.
    Any help will be appreciated.

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    美国财政预算计划在2016年拨付给美国国立卫生研究院(NIH)、美国食品药品监督管理局(FDA)、美国国家医疗信息技术协调办公室(ONC)等机构共2.15亿美元用于资助这方面的科学研究与创新发展。

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    精准医疗要做到个性、高效及预防的关键在于筛查和诊断,因此基因测序等检测诊断技术的发展是关键。成本的下降让基因测序商业化市场的打开成为可能,基因测序技术的成熟和商用经过了多年的发展,1980 年自动测序仪出现,2001 年完成了人类基因组框架图标志着这一技术的成熟,2007 年二代基因测序技术大幅降低测序成本,使得这一技术应用出现可能,以走在前列的Illumina 公司为例,该公司自2007 年起把当时每个基因组的测序成本费用从1000万美元降到了当下的1000 美元, 根据Illumina 公司数据,全球NGS(二代基因测序)的应用市场规模预计为200 亿美元,药品研发和临床应用是增速最快的领域,增速超过15%,肿瘤诊断和个性化用药是最有应用前景的领域,市场规模120亿美元。乐土投资与Illumina以及新一代的基因检测公司Genalyte, Centrillion都有着合作关系。

    刘如银说:精准医疗作为医疗模式的革新对提高我国国民健康水平有重要意义,将在基因测序技术发展和国家政策的推动下迎来黄金发展期。精准治疗是下一个新兴朝阳行业,我们关注基因测序、肿瘤诊断及个性化用药等相关投资机会。

    全球创新论坛纽约峰会由全美华人金融协会(The Chinese Finance Association, TCFA) 主办。全美华人金融协会于一九九四年在美国成立。分布在世界各地的会员来自华尔街投行、基金、监管部门、和学术界,已成为联系中美金融界最重要的桥梁之一。协会定期举行学术年会。协会本部设在纽约,并在波士顿,华盛顿,旧金山,伦敦,香港,北京和上海等金融中心设有分会。

    原招商银行行长马蔚华,中信银行美国分行行长文兵,汉世纪投资管理有限公司合伙人吴皓,联合国南南合作办首席经济与投资专家杨庆宏等参加了本年度会议并发表了讲话。

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