Hello. Thanks for your explanations.
As I'm not sure the best way for us now should be doing our own changes on camel-zookeper, curator and so on, could you advise about an alternative Cluster Service that actually works with master, and that I can use, at least for tests (jgroups for example) ? Thanks again. Regards. Le mar. 27 sept. 2022 à 10:54, Grzegorz Grzybek <gr.grzy...@gmail.com> a écrit : > > Hello > > > > wt., 27 wrz 2022 o 10:44 Ephemeris Lappis <ephemeris.lap...@gmail.com> > napisał(a): > > > Hello. > > > > The versions are the following : > > > > Karaf 4.4.1 > > Camel 2.25.4 (so the same for camel-master, camel-zookeeper, and so on) > > > > The curator version that is linked to these versions is 2.12.0 : > > 113 │ Active │ 50 │ 2.12.0 │ Curator Client > > 114 │ Active │ 50 │ 2.12.0 │ Curator Framework > > 115 │ Active │ 50 │ 2.12.0 │ Curator Recipes > > 116 │ Active │ 50 │ 2.12.0 │ Curator Service Discovery > > > > And indeed, the missing package is not exported by any started bundle. > > > > What kind of workaround could you suggest ? > > > > My Camel Cluster Service is provided using a feature : > > <?xml version="1.0" encoding="UTF-8" standalone="yes"?> > > <features xmlns="http://karaf.apache.org/xmlns/features/v1.6.0"; > > name="my-test-26-karaf-s-master"> > > > > <repository>mvn:org.apache.camel.karaf/apache-camel/2.25.4/xml/features</repository> > > <feature name="my-test-26-karaf-s-master" description="Fifi-T26 :: > > Master" version="0.0.1.SNAPSHOT"> > > <details>Fifi-T26 :: Master Service</details> > > <feature version="2.25.4" > > prerequisite="true">camel-master</feature> > > <feature version="2.25.4" > > prerequisite="true">camel-zookeeper</feature> > > > > <bundle>mvn:my.tests/my-test-26-karaf-s-master/0.0.1-SNAPSHOT</bundle> > > > > <capability>osgi.service;objectClass=org.apache.camel.cluster.CamelClusterService);effective:=active</capability> > > </feature> > > </features> > > > > Should it be possible to add other bundles/features to provide the > > missing packages out of the current zookeeper ? > > > > https://issues.apache.org/jira/browse/CURATOR-464 describes your problem > and it's "fixed in 5.0.0" - I have no idea if camel-zookeeper will even > work with Curator 5.0.0... > > And one of the comments under CURATOR-464 confirms my theory: > > Unfortunately, the committers don't know much about OSGi. We've always > > relied on contributors to maintain OSGi compatibility. > > > > I don't have any special workaround for you unfortunately... You've > mentioned moving away from Red Hat Fuse. To get similar (as in Fuse 6) > camel-master / zookeeper behavior, looks like you need something more than > a workaround... > But if you really want a workaround, you'd have to ... fork curator 2.12.0 > and recompile it to use shaded or imported version of > com.google.common.cache package... > > regards > Grzegorz Grzybek > > > > > > Thanks. > > > > Regards. > > > > > > > > Le mar. 27 sept. 2022 à 10:27, Grzegorz Grzybek <gr.grzy...@gmail.com> a > > écrit : > > > > > > Hello > > > > > > wt., 27 wrz 2022 o 09:16 Ephemeris Lappis <ephemeris.lap...@gmail.com> > > > napisał(a): > > > > > > > Hello. > > > > > > > > I'm trying to port to Karaf some bundles that we run today on Red-Hat > > > > Fuse that provides a "master" component to handle concurrent > > > > consumers. > > > > > > > > > > Which version of Red Hat Fuse are you using? Version 6 has very > > > sensitive/advanced/complex curator and zookeeper integration, because > > some > > > classes are changed to "fix" the original OSGi problems in old version of > > > curator. > > > Upstream curator/zookeeper versions have (AFAIK) OSGi integration simply > > > inherited from older contributions and sometimes it may cause problems in > > > later versions - mostly related to Guava integration. > > > > > > > > > > > > > > I've configured a Camel Cluster Service based on the ZooKeeper > > > > implementation, exposed a service in a bundle, and then I reference > > > > this service in the bundle that provides routes using "master". > > > > > > > > > > Which Camel version, Which Zookeeper version? > > > > > > > > > > > > > > But I've an exception that seems to be related to an internal > > > > dependance of the ZooKeeper service : Caused by: > > > > java.lang.ClassNotFoundException: > > > > org.apache.curator.shaded.com.google.common.cache.CacheBuilder not > > > > found by curator-framework > > > > > > > > > > Which Curator version are you using? I've quickly checked versions > > between > > > 2.6.0 and 5.1.0, but all these simply import-package > > > com.google.common.cache - so they expect the package to come from Guava > > > instead of being shaded/private-packaged.. > > > > > > > > > > > > > > I don't understand exactly what this "curator framework" does, but > > > > something is probably missing in the camel-zookeeper feature. > > > > > > > > > > Curator is to Zookeeper like Guava was supposed to be > > > (integration/versioning problems aside) java.util collections. Kind of > > > higher-level library with "recipes" implemented on top of low-level > > > Zookeeper "primitives". > > > > > > > > > > > > > > Has someone used these components before, and experienced the same > > issues ? > > > > > > > > I've seen some kind of bug report about the bad OSGi integration of > > > > this framework, but no solution or at least workaround to make it > > > > work. > > > > > > > > > > If you share more details (versions, features you've installed, Karaf > > > version used), we can try establishing some workaround ;) > > > > > > > > > > Should I use another Camel Cluster implementation ? > > > > > > > > > > I can help with OSGi, not with Camel Clustering ;) > > > > > > kind regards > > > Grzegorz Grzybek > > > > > > > > > > > > > > Thanks for your help. > > > > > > > > Regards. > > > > > >
