Hi, For anyone that's interested I got a working solution integrating an ejb2 running on a remote instance of weblogic10.3.6 using karaf and camel as my client.
The fundamental issue was that when using weblogic's t3 protocol (whatever you do don't try this with CORBA), the jndi lookup and other jndi like innvocations use the thread context class loader. So wherever you make jndi innvocations you must set the thread context class loader to the bundle class loader. This took me weeks to solve with a lot of pain in between. So if you are experiencing similar reqs let me know and I'd be happy to share the source code with you. I also removed bluerprint and use declarative services only, this made debugging a heck a lot of easier rather than sifting through proxy stack traces. Anyhow, hope it helps someone. My life and understanding of osgi are a lot better now! :-) lol Cheers, Matt. -----Original Message----- From: Claus Ibsen [mailto:[email protected]] Sent: Monday, 10 July 2017 5:07 PM To: [email protected] Subject: Re: camel route to remote EJB using karaf blueprint You can try from camelContext there is a getApplicationContextClassLoader method you can try using. On Mon, Jul 10, 2017 at 1:37 AM, Matthew Shaw <[email protected]> wrote: > Thanks Claus, I can't change the source system, so I have to consume the ejb > from osgi unfortunately. In the scenario below, I do have it working, > partially, as you say, I'm now battling classloader issues. Trawling the > posts I have read about setting the > Thread.currentThread().setClassContextLoader() to the bundle context, but > that does nothing to help me. > > Would I be correct in assuming that because I am loading the camel context > via a blueprint and apache aries that I would need to get a hold of that > classloader? I think my manifest looks pretty good below as I'm referencing > all the weblogic client stuff correctly through my imports. > > -----Original Message----- > From: Claus Ibsen [mailto:[email protected]] > Sent: Sunday, 9 July 2017 5:26 PM > To: [email protected] > Subject: Re: camel route to remote EJB using karaf blueprint > > Hi > > I think you are going on a path where nobody really goes - calling remote > EJBs (... from OSGi). > Then classloading is much more problematic to setup. You would need to > install the WebLogic EJB client and also make sure to have all the right > package imports in your application bundle etc. > > I really don't recommend using remote EJB calls, you end up with a tight > coupling on Java, Java serialization etc. Are you not able to use another > protocol in the communication to WebLogic? > > If you really must, then try first to get a non OSGi example / unit test etc > up and running so you at least know that this part works. > Then its "fighting" the OSGi classloading and get all that sorted. > > > > On Fri, Jul 7, 2017 at 3:51 AM, Matthew Shaw > <[email protected]> wrote: >> As an addendum, I think the issue maybe that using jndi and the weblogic >> initial context is outside the camel context, but the way I am invoking it. >> Which in turn, will be trying to load the same classes required again, >> through a completely separate class loader? >> >> -----Original Message----- >> From: Matthew Shaw [mailto:[email protected]] >> Sent: Friday, 7 July 2017 11:07 AM >> To: [email protected] >> Subject: camel route to remote EJB using karaf blueprint >> >> Hi All, >> >> I've been banging my head against the wall now for a week, trying to get a >> camel route going which consumes a remote service on an EJB2 container in >> weblogic 10.3. I keep getting class versioning issues between my client and >> the server.I have the exact same versions of the server jars in karaf as >> bundles and I import them through my manifest. My bundle installs ok into >> karaf with a state of "Active" and the camel routes start up. I'm a newbie >> in the osgi, camel world. >> >> I'm running camel 2.19.1 in apache karaf 4.1.1. >> >> My blueprint looks like this: >> >> <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"; >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >> >> xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.0.0"; >> xmlns:jaxws="http://cxf.apache.org/blueprint/jaxws"; >> xmlns:cxf="http://cxf.apache.org/blueprint/core"; >> xmlns:camel="http://camel.apache.org/schema/blueprint"; >> xmlns:camelcxf="http://camel.apache.org/schema/blueprint/cxf"; >> xsi:schemaLocation=" >> http://www.osgi.org/xmlns/blueprint/v1.0.0 >> https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd >> http://cxf.apache.org/blueprint/jaxws >> http://cxf.apache.org/schemas/blueprint/jaxws.xsd >> http://cxf.apache.org/blueprint/core >> http://cxf.apache.org/schemas/blueprint/core.xsd >> "> >> >> <bean id="eTimesheetMediationRoutes" >> class="au.gov.qld.ambulance.services.legacywrapper.eTimesheetMediatio >> n >> "/> >> >> <bean id="eTimesheetEJB2Bean" >> class="au.gov.qld.ambulance.services.legacywrapper.eTimesheetEJB2Bean" >> /> >> >> <camelContext id="camel" xmlns="http://camel.apache.org/schema/blueprint";> >> <routeBuilder ref="eTimesheetMediationRoutes"/> >> </camelContext> >> >> </blueprint> >> >> My manifest is as follows: >> >> Manifest-Version: 1.0 >> Bnd-LastModified: 1499385820689 >> Build-Jdk: 1.8.0_131 >> Built-By: mshaw >> Bundle-Blueprint: OSGI-INF/blueprint/camel-context.xml >> Bundle-ManifestVersion: 2 >> Bundle-Name: legacywrapper >> Bundle-SymbolicName: au.gov.qld.ambulance.tams.legacywrapper >> Bundle-Version: 0.0.1.SNAPSHOT >> Created-By: Apache Maven Bundle Plugin >> Export-Package: >> au.gov.qld.ambulance.services.legacywrapper;uses:="au.go >> v.qld.des.aftimesheet.dto,javax.naming,org.apache.camel.builder";vers >> i >> o >> n="0.0.1",au.gov.qld.ambulance.services.legacywrapper.domain;uses:="j >> a v ax.xml.bind,javax.xml.bind.annotation";version="0.0.1" >> Import-Package: >> au.gov.qld.des.aftimesheet.dto;version="0.0.0",au.gov.ql >> d.des.aftimesheet.ejb;version="0.0.0",au.gov.qld.des.aftimesheet.exce >> p >> t >> ion;version="0.0.0",com.fasterxml.jackson.annotation;version="[2.8,3)" >> , >> com.fasterxml.jackson.databind;version="[2.8,3)",javax.ejb,javax.nami >> n >> g >> ,javax.rmi,javax.xml.bind,javax.xml.bind.annotation,javax.xml.namespa >> c >> e >> ,org.apache.camel;version="[2.19,3)",org.apache.camel.builder;version=" >> [2.19,3)",org.apache.camel.model;version="[2.19,3)",org.apache.camel. >> m >> o >> del.rest;version="[2.19,3)",org.osgi.service.blueprint;version="[1.0. >> 0 >> , >> 2.0.0)",org.restlet.data,org.slf4j;version="[1.7,2)",au.gov.qld.des.a >> f >> t >> imesheet.officer.dto;version="0.0.0",weblogic.jndi,javax.rmi.CORBA,org. >> omg.CORBA,org.omg.CORBA.portable,org.omg.CORBA_2_3,org.omg.CORBA_2_3. >> p >> o >> rtable >> Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))" >> Tool: Bnd-3.3.0.201609221906 >> >> My route builder impl class: >> >> >> public class eTimesheetMediation extends RouteBuilder { >> >> Logger logger = >> LoggerFactory.getLogger(eTimesheetMediation.class); >> >> @BeanInject("eTimesheetEJB2Bean") >> eTimesheetEJB2Bean eTimesheetEJB2Bean; >> >> @Override >> public void configure() throws Exception { >> >> >> restConfiguration().component("restlet").host("localhost").port(8095). >> bindingMode(RestBindingMode.json); >> >> rest("/services/legacywrapper/etimesheet") >> .post() >> .consumes(MediaType.APPLICATION_JSON.getName()) >> .type(ETimesheetRequest.class) >> .to("direct:extractTimesheetId"); >> >> from("direct:extractTimesheetId") >> .process(new Processor() { >> @Override >> public void process(Exchange exchange) throws Exception { >> ETimesheetRequest eTimesheetRequest = >> exchange.getIn().getBody(ETimesheetRequest.class); >> >> exchange.getIn().setBody(eTimesheetRequest.getTimesheetId()); >> } >> }) >> .to("direct:etimesheetGet"); >> >> >> from("direct:etimesheetGet") >> .doTry() >> .bean(eTimesheetEJB2Bean, "mediate") >> .log(LoggingLevel.INFO,"Timesheet successfully >> transformed") >> .convertBodyTo(String.class, "UTF-8") >> .doCatch(Exception.class) >> .log(LoggingLevel.ERROR ,exceptionMessage().toString()) >> .throwException(new >> RuntimeException(exceptionMessage().toString())) >> .endDoTry(); >> >> >> } >> } >> >> >> My ejb client code / bean: >> >> >> public class eTimesheetEJB2Bean { >> >> public String mediate(Integer eTimesheetId) { >> >> Hashtable env = new Hashtable(); >> env.put(Context.INITIAL_CONTEXT_FACTORY, >> "weblogic.jndi.WLInitialContextFactory"); >> env.put(Context.PROVIDER_URL, "t3://poldesaps02:5013"); >> env.put(Context.SECURITY_PRINCIPAL, "testuser4"); >> env.put(Context.SECURITY_CREDENTIALS, "passw0rd"); >> >> Context ic = null; >> >> try { >> ic = new InitialContext(env); >> }catch (NamingException e) { >> throw new RuntimeException(e); >> } >> >> return marshallTimesheetToJSON(ic ,getTimesheet(ic, >> eTimesheetId)); >> >> } >> >> >> >> public TimesheetTransferObject getTimesheet (Context ic, Integer >> eTimesheetId) { >> Object homeObject = null; >> >> try { >> homeObject = ic.lookup(TimesheetSessionFacadeHome.JNDI_NAME); >> } catch (NamingException e) { >> throw new RuntimeException(e); >> } >> >> TimesheetSessionFacadeHome home = >> (TimesheetSessionFacadeHome) PortableRemoteObject.narrow(homeObject, >> TimesheetSessionFacadeHome.class); >> >> TimesheetSessionFacade remote = null; >> try { >> remote = (TimesheetSessionFacade) >> PortableRemoteObject.narrow(home.create(), TimesheetSessionFacade.class); >> TimesheetTransferObject result = >> remote.getTimesheet(eTimesheetId); >> // TimesheetTransferObject result = new TimesheetTransferObject(); >> >> return result; >> } catch (ClassCastException e) { >> throw new RuntimeException(e); >> } catch (RemoteException e) { >> throw new RuntimeException(e); >> } catch (CreateException e) { >> throw new RuntimeException(e); >> }catch (AFTimesheetException e) { >> throw new RuntimeException(e); >> } >> } >> >> private String marshallTimesheet (Context ic, >> TimesheetTransferObject timesheet) { >> >> String xml = ""; >> ByteArrayOutputStream baos = new ByteArrayOutputStream(); >> >> try { >> JAXBContext jc = JAXBContext.newInstance(String.class, >> TimesheetTransferObject.class); >> JAXBIntrospector introspector = jc.createJAXBIntrospector(); >> Marshaller marshaller = jc.createMarshaller(); >> marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true); >> marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); >> if (null == introspector.getElementName(timesheet)) { >> JAXBElement jaxbElement = new JAXBElement(new >> QName("http://services.ambulance.qld.gov.au/data/services/corporate/h >> r i/timeandattendance", "Timesheet", "ta"), timesheet.getClass(), >> timesheet); >> >> marshaller.marshal(jaxbElement, baos); >> } else { >> marshaller.marshal(timesheet, baos); >> } >> xml += baos.toString(); >> } catch (JAXBException e) { >> throw new RuntimeException(e); >> } >> return xml; >> } >> >> private String marshallTimesheetToJSON (Context ic, >> TimesheetTransferObject timesheet) { >> >> try { >> ObjectMapper objectMapper = new ObjectMapper(); >> >> objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL); >> objectMapper.addMixIn(MealBrokenTransferObject.class, >> MealBrokenTransferObjectMixIn.class); >> objectMapper.addMixIn(ShiftTransferObject.class, >> ShiftTransferObjectMixIn.class); >> objectMapper.addMixIn(TimesheetTransferObject.class, >> TimesheetTransferObjectMixIn.class); >> objectMapper.addMixIn(CallOutTransferObject.class, >> CalloutTransferObjectMixIn.class); >> objectMapper.addMixIn(CallOutCaseTransferObject.class, >> CallOutCaseTransferObjectMixIn.class); >> objectMapper.addMixIn(AllowanceTransferObject.class, >> AllowanceTransferObjectMixIn.class); >> return objectMapper.writeValueAsString(timesheet); >> } catch (Exception e) { >> throw new RuntimeException(e); >> } >> >> } >> >> } >> >> >> Any help / insight would be really appreciated. >> >> Cheers, >> Matt. >> >> >> >> >> >> This email, including any attachments sent with it, is confidential and for >> the sole use of the intended recipient(s). This confidentiality is not >> waived or lost, if you receive it and you are not the intended recipient(s), >> or if it is transmitted/received in error. >> >> Any unauthorised use, alteration, disclosure, distribution or review of this >> email is strictly prohibited. The information contained in this email, >> including any attachment sent with it, may be subject to a statutory duty of >> confidentiality if it relates to health service matters. >> >> If you are not the intended recipient(s), or if you have received this email >> in error, you are asked to immediately notify the sender. You should also >> delete this email, and any copies, from your computer system network and >> destroy any hard copies produced. >> >> If not an intended recipient of this email, you must not copy, distribute or >> take any action(s) that relies on it; any form of disclosure, modification, >> distribution and/or publication of this email is also prohibited. >> >> Although the Queensland Ambulance Service takes all reasonable steps to >> ensure this email does not contain malicious software, the Queensland >> Ambulance Service does not accept responsibility for the consequences if any >> person's computer inadvertently suffers any disruption to services, loss of >> information, harm or is infected with a virus, other malicious computer >> programme or code that may occur as a consequence of receiving this email. >> >> Unless stated otherwise, this email represents only the views of the sender >> and not the views of the Queensland Government. >> >> ********************************************************************* >> * >> ********** >> >> The content presented in this publication is distributed by the Queensland >> Government as an information source only. The State of Queensland makes no >> statements, representations or warranties about the accuracy, completeness >> or reliability of any information contained in this publication. The State >> of Queensland disclaims all responsibility and all liability (including >> without limitation for liability in negligence) for all expenses, losses, >> damages and costs you might incur as a result of the information being >> inaccurate or incomplete in any way, and for any reason reliance was placed >> on such information. >> This email, including any attachments sent with it, is confidential and for >> the sole use of the intended recipient(s). This confidentiality is not >> waived or lost, if you receive it and you are not the intended recipient(s), >> or if it is transmitted/received in error. >> >> Any unauthorised use, alteration, disclosure, distribution or review of this >> email is strictly prohibited. The information contained in this email, >> including any attachment sent with it, may be subject to a statutory duty of >> confidentiality if it relates to health service matters. >> >> If you are not the intended recipient(s), or if you have received this email >> in error, you are asked to immediately notify the sender. You should also >> delete this email, and any copies, from your computer system network and >> destroy any hard copies produced. >> >> If not an intended recipient of this email, you must not copy, distribute or >> take any action(s) that relies on it; any form of disclosure, modification, >> distribution and/or publication of this email is also prohibited. >> >> Although the Queensland Ambulance Service takes all reasonable steps to >> ensure this email does not contain malicious software, the Queensland >> Ambulance Service does not accept responsibility for the consequences if any >> person's computer inadvertently suffers any disruption to services, loss of >> information, harm or is infected with a virus, other malicious computer >> programme or code that may occur as a consequence of receiving this email. >> >> Unless stated otherwise, this email represents only the views of the sender >> and not the views of the Queensland Government. >> >> ********************************************************************* >> * >> ********** >> >> The content presented in this publication is distributed by the Queensland >> Government as an information source only. The State of Queensland makes no >> statements, representations or warranties about the accuracy, completeness >> or reliability of any information contained in this publication. The State >> of Queensland disclaims all responsibility and all liability (including >> without limitation for liability in negligence) for all expenses, losses, >> damages and costs you might incur as a result of the information being >> inaccurate or incomplete in any way, and for any reason reliance was placed >> on such information. >> > > > > -- > Claus Ibsen > ----------------- > http://davsclaus.com @davsclaus > Camel in Action 2: https://www.manning.com/ibsen2 > > This email, including any attachments sent with it, is confidential and for > the sole use of the intended recipient(s). This confidentiality is not waived > or lost, if you receive it and you are not the intended recipient(s), or if > it is transmitted/received in error. > > Any unauthorised use, alteration, disclosure, distribution or review of this > email is strictly prohibited. The information contained in this email, > including any attachment sent with it, may be subject to a statutory duty of > confidentiality if it relates to health service matters. > > If you are not the intended recipient(s), or if you have received this email > in error, you are asked to immediately notify the sender. You should also > delete this email, and any copies, from your computer system network and > destroy any hard copies produced. > > If not an intended recipient of this email, you must not copy, distribute or > take any action(s) that relies on it; any form of disclosure, modification, > distribution and/or publication of this email is also prohibited. > > Although the Queensland Ambulance Service takes all reasonable steps to > ensure this email does not contain malicious software, the Queensland > Ambulance Service does not accept responsibility for the consequences if any > person's computer inadvertently suffers any disruption to services, loss of > information, harm or is infected with a virus, other malicious computer > programme or code that may occur as a consequence of receiving this email. > > Unless stated otherwise, this email represents only the views of the sender > and not the views of the Queensland Government. > > ********************************************************************** > ********** > > The content presented in this publication is distributed by the Queensland > Government as an information source only. The State of Queensland makes no > statements, representations or warranties about the accuracy, completeness or > reliability of any information contained in this publication. The State of > Queensland disclaims all responsibility and all liability (including without > limitation for liability in negligence) for all expenses, losses, damages and > costs you might incur as a result of the information being inaccurate or > incomplete in any way, and for any reason reliance was placed on such > information. -- Claus Ibsen ----------------- http://davsclaus.com @davsclaus Camel in Action 2: https://www.manning.com/ibsen2 This email, including any attachments sent with it, is confidential and for the sole use of the intended recipient(s). This confidentiality is not waived or lost, if you receive it and you are not the intended recipient(s), or if it is transmitted/received in error. Any unauthorised use, alteration, disclosure, distribution or review of this email is strictly prohibited. The information contained in this email, including any attachment sent with it, may be subject to a statutory duty of confidentiality if it relates to health service matters. If you are not the intended recipient(s), or if you have received this email in error, you are asked to immediately notify the sender. You should also delete this email, and any copies, from your computer system network and destroy any hard copies produced. If not an intended recipient of this email, you must not copy, distribute or take any action(s) that relies on it; any form of disclosure, modification, distribution and/or publication of this email is also prohibited. Although the Queensland Ambulance Service takes all reasonable steps to ensure this email does not contain malicious software, the Queensland Ambulance Service does not accept responsibility for the consequences if any person's computer inadvertently suffers any disruption to services, loss of information, harm or is infected with a virus, other malicious computer programme or code that may occur as a consequence of receiving this email. Unless stated otherwise, this email represents only the views of the sender and not the views of the Queensland Government. ******************************************************************************** The content presented in this publication is distributed by the Queensland Government as an information source only. The State of Queensland makes no statements, representations or warranties about the accuracy, completeness or reliability of any information contained in this publication. The State of Queensland disclaims all responsibility and all liability (including without limitation for liability in negligence) for all expenses, losses, damages and costs you might incur as a result of the information being inaccurate or incomplete in any way, and for any reason reliance was placed on such information.
