Hi there, Is there any way to kill a running session? I've been trying with StatefulKnowledgeSession.abortProcessInstance but i can't get it working. For instance .. I got this drl rule "infinite loop" when x : Integer() then System.out.println(x); Thread.sleep(100); insert(x + 1); end n' this Thread public class SessionThread implements Runnable { private StatefulKnowledgeSession session; public SessionThread(StatefulKnowledgeSession session) { this.session = session; } public void run() { session.fireAllRules(); } } then i create a session with the drl n' do something like ... session.insert(42); Thread thread = new Thread(new SessionThread(session)); thread.start(); Thread.sleep(1000); session.abortProcessInstance(thread.getId()); I've tried diff processInstanceIds and session.getProcessInstances() but nothing seems to stop the running session Thank you Mike

Awesome I'll try that :) We got business ppl writing rules ... Those rules are going on infinite loops quite often ... Frankly I am not excited about killing the session, for me it's just a business request that I am trying to implement Thank you very much Wolfgang Cheers Mike On Tue, May 15, 2012 at 10:53 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com&gt;wrote: > You are confusing jBPM processes and Java threads. > > You can interrupt the thread SessionThread, but that's not reliable > (if IE is handled, for instance), > > Best would be to call fireUntilHalt() and call the session's halt method. > > But why would you want to do this sort of weird thing? > > -W > > > On 15/05/2012, mike <mikemps(a)gmail.com&gt; wrote: > > Hi there, > > > > Is there any way to kill a running session? > > > > I've been trying with StatefulKnowledgeSession.abortProcessInstance but > i > > can't get it working. > > > > For instance .. I got this drl > > > > rule "infinite loop" > > when x : Integer() > > then > > System.out.println(x); > > Thread.sleep(100); > > insert(x + 1); > > end > > > > n' this Thread > > > > public class SessionThread implements Runnable { > > private StatefulKnowledgeSession session; > > public SessionThread(StatefulKnowledgeSession session) { this.session = > > session; } > > public void run() { session.fireAllRules(); } > > } > > > > then i create a session with the drl n' do something like ... > > > > session.insert(42); > > Thread thread = new Thread(new SessionThread(session)); > > thread.start(); > > Thread.sleep(1000); > > session.abortProcessInstance(thread.getId()); > > > > I've tried diff processInstanceIds and session.getProcessInstances() but > > nothing seems to stop the running session > > > > Thank you > > Mike > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >

Well I got this wrong sorry. Yes I can stop a session if I start it with fireUntilHalt() but it never stops. I need it to finish by itself too. Thank you Mike On Tue, May 15, 2012 at 11:06 AM, mike <mikemps(a)gmail.com&gt; wrote: > wow that worked like a charm!!! thank you very much Wolfgang, I owe u a > beer or something :) > > Cheers > Mike > > > On Tue, May 15, 2012 at 11:01 AM, mike <mikemps(a)gmail.com&gt; wrote: > >> Awesome I'll try that :) >> >> We got business ppl writing rules ... Those rules are going on infinite >> loops quite often ... Frankly I am not excited about killing the session, >> for me it's just a business request that I am trying to implement >> >> Thank you very much Wolfgang >> >> Cheers >> Mike >> >> >> On Tue, May 15, 2012 at 10:53 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com >> > wrote: >> >>> You are confusing jBPM processes and Java threads. >>> >>> You can interrupt the thread SessionThread, but that's not reliable >>> (if IE is handled, for instance), >>> >>> Best would be to call fireUntilHalt() and call the session's halt >>> method. >>> >>> But why would you want to do this sort of weird thing? >>> >>> -W >>> >>> >>> On 15/05/2012, mike <mikemps(a)gmail.com&gt; wrote: >>> > Hi there, >>> > >>> > Is there any way to kill a running session? >>> > >>> > I've been trying with StatefulKnowledgeSession.abortProcessInstance >>> but i >>> > can't get it working. >>> > >>> > For instance .. I got this drl >>> > >>> > rule "infinite loop" >>> > when x : Integer() >>> > then >>> > System.out.println(x); >>> > Thread.sleep(100); >>> > insert(x + 1); >>> > end >>> > >>> > n' this Thread >>> > >>> > public class SessionThread implements Runnable { >>> > private StatefulKnowledgeSession session; >>> > public SessionThread(StatefulKnowledgeSession session) { this.session >>> = >>> > session; } >>> > public void run() { session.fireAllRules(); } >>> > } >>> > >>> > then i create a session with the drl n' do something like ... >>> > >>> > session.insert(42); >>> > Thread thread = new Thread(new SessionThread(session)); >>> > thread.start(); >>> > Thread.sleep(1000); >>> > session.abortProcessInstance(thread.getId()); >>> > >>> > I've tried diff processInstanceIds and session.getProcessInstances() >>> but >>> > nothing seems to stop the running session >>> > >>> > Thank you >>> > Mike >>> > >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> >> > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

that's nice ... n' a bit clever ... it could work ... I mean, i could automatically append that to all sessions given that i control compiling the drls. Is there any setting or something that detects infinite loops? Like it would abort if if drools runs into an infinite loop?

I guess I could do something with fireAllRules(int max) but figuring out a reasonable max would be fuzzy. I could also use the no-loop attribute but it would not pick up some cases of infinite loops.

Thank you very much for you help Cheers Mike On Tue, May 15, 2012 at 3:55 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com&gt;wrote: > A very low salience rule depending on nothing and calling halt will stop > the run: > > rule Exit > salience -999999999 > when > then > drools.halt(); > end > > -W > > > On 15 May 2012 21:46, mike <mikemps(a)gmail.com&gt; wrote: > >> Well I got this wrong sorry. Yes I can stop a session if I start it with >> fireUntilHalt() but it never stops. I need it to finish by itself too. >> >> Thank you >> Mike >> >> >> On Tue, May 15, 2012 at 11:06 AM, mike <mikemps(a)gmail.com&gt; wrote: >> >>> wow that worked like a charm!!! thank you very much Wolfgang, I owe u >>> a >>> beer or something :) >>> >>> Cheers >>> Mike >>> >>> >>> On Tue, May 15, 2012 at 11:01 AM, mike <mikemps(a)gmail.com&gt; wrote: >>> >>>> Awesome I'll try that :) >>>> >>>> We got business ppl writing rules ... Those rules are going on >>>> infinite >>>> loops quite often ... Frankly I am not excited about killing the >>>> session, >>>> for me it's just a business request that I am trying to implement >>>> >>>> Thank you very much Wolfgang >>>> >>>> Cheers >>>> Mike >>>> >>>> >>>> On Tue, May 15, 2012 at 10:53 AM, Wolfgang Laun < >>>> wolfgang.laun(a)gmail.com&gt; wrote: >>>> >>>>> You are confusing jBPM processes and Java threads. >>>>> >>>>> You can interrupt the thread SessionThread, but that's not reliable >>>>> (if IE is handled, for instance), >>>>> >>>>> Best would be to call fireUntilHalt() and call the session's halt >>>>> method. >>>>> >>>>> But why would you want to do this sort of weird thing? >>>>> >>>>> -W >>>>> >>>>> >>>>> On 15/05/2012, mike <mikemps(a)gmail.com&gt; wrote: >>>>> > Hi there, >>>>> > >>>>> > Is there any way to kill a running session? >>>>> > >>>>> > I've been trying with StatefulKnowledgeSession.abortProcessInstance >>>>> but i >>>>> > can't get it working. >>>>> > >>>>> > For instance .. I got this drl >>>>> > >>>>> > rule "infinite loop" >>>>> > when x : Integer() >>>>> > then >>>>> > System.out.println(x); >>>>> > Thread.sleep(100); >>>>> > insert(x + 1); >>>>> > end >>>>> > >>>>> > n' this Thread >>>>> > >>>>> > public class SessionThread implements Runnable { >>>>> > private StatefulKnowledgeSession session; >>>>> > public SessionThread(StatefulKnowledgeSession session) { >>>>> this.session = >>>>> > session; } >>>>> > public void run() { session.fireAllRules(); } >>>>> > } >>>>> > >>>>> > then i create a session with the drl n' do something like ... >>>>> > >>>>> > session.insert(42); >>>>> > Thread thread = new Thread(new SessionThread(session)); >>>>> > thread.start(); >>>>> > Thread.sleep(1000); >>>>> > session.abortProcessInstance(thread.getId()); >>>>> > >>>>> > I've tried diff processInstanceIds and >>>>> > session.getProcessInstances() >>>>> but >>>>> > nothing seems to stop the running session >>>>> > >>>>> > Thank you >>>>> > Mike >>>>> > >>>>> _______________________________________________ >>>>> rules-users mailing list >>>>> rules-users(a)lists.jboss.org >>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>> >>>> >>> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >