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From Richard Downer <rich...@apache.org>
Subject Re: NPE on running Chef Solo blueprint
Date Tue, 27 May 2014 15:55:19 GMT
Maneesh,

I suspect that things are maybe not happening in the expected order,
so I'd like to see the full exception trace. As you can see, the
console log only reports the first line of the stack trace, but you
should find a file called "brooklyn-debug.log" in the brooklyn
directory. Could you have a look and see if the full exception is
recorded in there?

Thanks
Richard.

On 26 May 2014 15:36, Maneesh Mehra <maneeshmehra@gmail.com> wrote:
> Hi:
>
> I am new to brooklyn and am trying to create a blueprint to run a chef
> recipe in a solo mode. Here is what I have so far in terms of this
> blueprint:
>
> package com.mypackage;
>
> import java.util.HashMap;
> import java.util.Map;
>
> import brooklyn.entity.basic.AbstractApplication;
> import brooklyn.entity.chef.ChefConfig;
> import brooklyn.entity.chef.ChefEntity;
> import brooklyn.entity.proxying.EntitySpec;
>
> public class ChefBlueprint extends AbstractApplication {
>
> private static final Map<String, String> cookbooksAndUrls = new
> HashMap<String, String>();
>  @Override
> public void init() {
>  cookbooksAndUrls.put("my-server", "file:///tmp/library/my_cookbooks.zip");
>  addChild(EntitySpec.create(ChefEntity.class)
>  .configure(ChefConfig.CHEF_MODE, ChefConfig.ChefModes.SOLO)
> .configure(ChefConfig.CHEF_COOKBOOK_URLS, cookbooksAndUrls)
>  .configure(ChefConfig.CHEF_COOKBOOK_PRIMARY_NAME, "my-server")
> .configure(ChefConfig.PID_FILE, "/tmp/chef_solo")
>  );
> }
> }
>
> However, when I run this in brooklyn 0.7.0 M1 on localhost, I am getting
> this:
>
> [root@mmamp library]# brooklyn -v launch -b <myserver> --app
> com.mypackage.ChefBlueprint --location localhost
>  _                     _    _
> | |__  _ __ ___   ___ | | _| |_   _ _ __ (R)
> | '_ \| '__/ _ \ / _ \| |/ / | | | | '_ \
> | |_) | | | (_) | (_) |   <| | |_| | | | |
> |_.__/|_|  \___/ \___/|_|\_\_|\__, |_| |_|
>                               |___/             0.7.0-M1
>
> Launching brooklyn app: com.mypackage.ChefBlueprint in localhost
> 2014-05-26 09:26:02,687 INFO  Started Brooklyn console at
> http://<myserver>:8081/,
> running classpath://brooklyn.war and []
> 2014-05-26 09:26:02,687 INFO  Persistence disabled
> *2014-05-26 09:26:02,812 WARN  Failed to create entity using spec
> EntitySpec{type=interface brooklyn.entity.chef.ChefEntity} (rethrowing)*
> *java.lang.NullPointerException: null*
> *        at
> brooklyn.entity.chef.ChefLifecycleEffectorTasks.getPidFile(ChefLifecycleEffectorTasks.java:68)
> ~[brooklyn-software-base-0.7.0-M1.jar:na]*
> *2014-05-26 09:26:02,818 WARN  Failed to create entity using spec
> EntitySpec{type=interface brooklyn.entity.basic.StartableApplication}
> (rethrowing)*
> *java.lang.NullPointerException: null*
> *        at
> brooklyn.entity.chef.ChefLifecycleEffectorTasks.getPidFile(ChefLifecycleEffectorTasks.java:68)
> ~[brooklyn-software-base-0.7.0-M1.jar:na]*
> *2014-05-26 09:26:02,819 ERROR Error launching brooklyn:
> java.lang.NullPointerException*
> *java.lang.NullPointerException: null*
> *        at
> brooklyn.entity.chef.ChefLifecycleEffectorTasks.getPidFile(ChefLifecycleEffectorTasks.java:68)
> ~[brooklyn-software-base-0.7.0-M1.jar:na]*
> 2014-05-26 09:26:07,025 INFO  Launched Brooklyn; now blocking to wait for
> cntrl-c or kill
> ^C2014-05-26 09:26:10,020 INFO  BrooklynWebServer detected shut-down:
> stopping web-console
>
> I looked up the source code and seems like the following line in
> ChefLifecycleEffectorTasks.java is throwing the NPE.
>
>     public String getPidFile() {
>         if (_pidFile!=null) return _pidFile;
>         *return _pidFile = entity().getConfig(ChefConfig.PID_FILE);*
>     }
>
>
> I am suspecting that entity() is returning a null, but why ?
>
> Thanks,
>
> Maneesh

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