0 Replies Latest reply on May 1, 2017 8:01 PM by Richard Ballard

    redeploying Fuse services/bundles seems to require a restart

    Richard Ballard Newbie

      Hello,

      I am new to JBoss Fuse and am evaluating it for my employer.  I am running Fuse version 6.3 - e.g.:

      JBossFuse:karaf@root> version

      2.4.0.redhat-630187

      I have a simple case where there is a bundle (known as 'serviceA') at version 5.0 that exports a service (rbtest.servicea.TextTransformer).  I have a service consumer (known as 'clientA') that imports a range of the service from 5.0 -> 6.0, e.g.

      <dependency>

         <groupId>com.rbtest</groupId>

         <artifactId>serviceA</artifactId>

         <version>[5.0,6)</version>

      </dependency>

      This all seems to work on initial load of bundles.

       

      My issue is that when I update serviceA from 5.0 to 5.1 (with no changes to the service semantics, just an internal change to the service) and restart clientA I see the following in the log:

      2017-05-02 11:41:57,079 | INFO  | l Console Thread | BlueprintContainerImpl       | 23 - org.apache.aries.blueprint.core - 1.4.5 | Bundle com.rbtest.clientA/5.0.0 is waiting for dependencies [(objectClass=rbtest.servicea.TextTransformer)]

      I can see in the headers of serviceA that it is exporting the service in the required range:

      JBossFuse:karaf@root> headers 439

      serviceA (439)

      ...

      Export-Service =

          rbtest.servicea.TextTransformer;transformer.language=english

       

      Export-Package =

          rbtest.servicea;version=5.1.0

      Import-Package =

          org.osgi.service.blueprint;version="[1.0.0,2.0.0)"

       

      and I can see in the headers of clientA that it is importing the required range:

      JBossFuse:karaf@root> headers 438

       

      clientA (438)

      ...

      Import-Service =

          org.fusesource.example.service.HelloWorldSvc;multiple:=false,

          rbtest.servicea.TextTransformer;multiple:=false

       

      Export-Package =

          rbtest.clienta;uses:="org.fusesource.example.service,rbtest.servicea";version=5.0.0

      Import-Package =

          org.fusesource.example.service;version="[1.0,2)",

          org.osgi.service.blueprint;version="[1.0.0,2.0.0)",

          rbtest.servicea;version="[5.0,6)"

      So, it seems that clientA is stuck waiting for the dependency rbtest.servicea.TextTransformer that never comes.

       

      Some workarounds I found are:

      • reinstalling the clientA bundle (and restarting it)
      • restarting fuse

       

      Both of these work (i.e. no hanging on waiting for dependencies) but obviously these will neither scale well nor work in a production deployment.

       

      Thanks in advance for your help,

      Richard