[jbosstools-dev] JBT/AS Server info
phantomjinx
p.g.richardson at phantomjinx.co.uk
Fri Aug 31 05:39:28 EDT 2012
FWIW
The contribution of the teiid server aspects is a nice-to-have feature
at the moment in Designer 8.0. I have added them at the moment on
account of it being trivial to add the provider extensions to the
Servers view.
However, the changes to the Teiid Server view in Designer are such that
the teiid server is being derived from an eclipse-defined jboss instance
hence the TeiidServer POJO being aware of its parent IServer (jboss 7).
Regards
PGR
--
Paul Richardson
* p.g.richardson at phantomjinx.co.uk
* p.g.richardson at redhat.com
* pgrichardson at linux.com
On 08/31/2012 10:15 AM, Rob Stryker wrote:
> I didn't get any updates Max.
>
> On 08/31/2012 05:14 PM, Max Rydahl Andersen wrote:
>> Since I saw Phantom work on this I was wondering if there were any
>> follow up on this:
>>
>> On 14 Aug 2012, at 09:45, Max Rydahl Andersen
>> <max.andersen at redhat.com> wrote:
>>
>>> im late on this, but if i'm reading this right Rob is outlining how
>>> to communicate with the AS7 server API's which is all fine and dandy;
>>> but
>>> as far as I understand Teiid aren't there more to this than just api
>>> calls ?
>>>
>>> i.e. decide if Teiid servers is a part/extension of an AS/EAP server
>>> type or a server type on its own ?
>>> wether Teiid actions are contributed to the server view menu or
>>> somewhere else ?
>>> How datasource setup is done ? (today its scattered everywhere
>>> (hibernate, wtp, dtp, teiid, etc.) - time to make it less scattered imo)
>>>
>>> ...any other server dependent features teiid needs to do ?
>>>
>>>
>>> On 06 Aug 2012, at 06:57, Rob Stryker <rstryker at redhat.com> wrote:
>>>
>>>> Hey Barry:
>>>>
>>>> You'll probably really want to investigate using JBossTools if you
>>>> want some ready-made APIs to really help send management commands.
>>>> Also, discovering the management port will require you either
>>>> parsing xml yourself or accessing some string constants in our server.
>>>>
>>>> Let's start with host. All IServer objects in WTP can get the host
>>>> simply by server.getHost(), so that's easy.
>>>>
>>>> For getting the management port, there are a few ways to do it. The
>>>> first is with raw xml, searching the proper file. The xpath you'll
>>>> need and file data is:
>>>>
>>>> as7.0 xpath:
>>>> //*[local-name()="management-interfaces"]/*[local-name()="native-interface"]
>>>>
>>>> as7.1 xpath:
>>>> //*[local-name()="socket-binding-group"]/*[local-name()="socket-binding"][@name="management-native"]
>>>>
>>>> xpath attribute: port
>>>> file to search: standalone/configuration/${jboss_config_file}
>>>> (probably standalone.xml)
>>>>
>>>> Obviously here the xpaths differ based on jboss version. AS7.0 has
>>>> one xpath. AS7.1 has a different. However, none of these allow the
>>>> 'overrides' available in the UI. In the JBossTools UI, you can
>>>> double-click the server to see the editor. There's a port section
>>>> there, and there's the opportunity to ignore the xml value and
>>>> override it via UI. So if the default xpath has 9999 but somehow
>>>> you're using more complicated features in the standalone.xml such
>>>> that the actual value is 9998, you'll need to override this in the UI.
>>>>
>>>> So how to get this value that respects the user's UI choices? Well,
>>>> two ways. One is by using hard-coded strings (if you want to avoid
>>>> dependency on jbosstools). The code for that would look like this:
>>>>
>>>> public static final String AS7_MANAGEMENT_PORT_DETECT=
>>>> "org.jboss.ide.eclipse.as.core.server.as7.managementPortAutoDetect";
>>>> //$NON-NLS-1$
>>>>
>>>> public static final String AS7_MANAGEMENT_PORT =
>>>> "org.jboss.ide.eclipse.as.core.server.as7.managementPort";
>>>> //$NON-NLS-1$
>>>>
>>>> boolean detect = getAttribute(detectKey, true);
>>>> String result = null;
>>>> if( !detect ) {
>>>> result = getAttribute(attributeKey, (String)null);
>>>> } else {
>>>> // Load it from the xml xpaths listed above
>>>> }
>>>>
>>>> This is if you're trying to avoid any dependencies on jbosstools of
>>>> course. If you don't mind having dependencies on jbosstools, the
>>>> best way to get this port is as follows:
>>>>
>>>> JBoss7Server jb7 = server.loadAdapter(JBoss7Server.class, null);
>>>> if( jb7 != null ) {
>>>> return jb7.getManagementPort();
>>>> }
>>>>
>>>> So what other benefits can JBT provide other than just helping to
>>>> find the port? Well, we can also run your remote commands for you.
>>>> JBoss7 servers have a remote management service registered in
>>>> eclipse, which can run your remote commands and return the results.
>>>>
>>>> The first is our management service. The service interface is
>>>> IJBoss7ManagerService. You can see a lot of methods there for
>>>> deploying or stopping a server. But there's also a method to run
>>>> arbitrary commands: public String execute(IAS7ManagementDetails
>>>> details, String request) throws Exception;
>>>>
>>>> The way to access this service is via the following command:
>>>> JBoss7ManagerUtil.getService(iserverObject);
>>>>
>>>> This API ensures that if for example the protocol changes slightly
>>>> (either intentionally or as a bug) between as7.1 and as7.2 / as8.0,
>>>> the proper service is returned for the proper AS version. Using
>>>> these APIs ensure that all the management jars are of the proper
>>>> version, talking to the proper remote version. It's possible to do
>>>> all of this on your own, but I'm pretty sure you'll find it a LOT
>>>> more trouble and you'll simply be replicating our work.
>>>>
>>>> And worse yet, how you intend to get the jboss-as jars on the
>>>> classpath is a point of interest. We currently will be bundling the
>>>> management jars for each version (or more specifically for any set
>>>> of jars that cannot talk to each other. We also work hard to ensure
>>>> that regressions upstream (ie a new version unable to talk to older
>>>> ones) is fixed promptly). If you intend to bundle these jars,
>>>> it'll be inflating the size of your product substantially. And
>>>> you'll most likely be re-engineering our solution for separation of
>>>> version jars.
>>>>
>>>> So we've already discussed how to get the port via xml, and how to
>>>> get a port that respects user settings. We've discussed how to get
>>>> the management service regardless of app-server version. From there,
>>>> running the default commands is simple. For example:
>>>>
>>>> JBoss7ManagerUtil.getService(iserverObject).stop(new
>>>> AS7ManagementDetails(iserverObject));
>>>>
>>>> So the last thing that remains is how to run an arbitrary command.
>>>> Due to classpath and classloading concerns, we can't have the
>>>> management service api and interfaces include references to jboss-as
>>>> jars or classes like ModelNode, so the method for executing
>>>> arbitrary commands is:
>>>>
>>>> JBoss7ManagerUtil.getService(iserverObject).execute(IAS7ManagementDetails
>>>> details, String request) throws Exception;
>>>>
>>>> The "String request" is a JBoss-dmr string. And to generate that
>>>> string, we have yet another plugin called
>>>> org.jboss.ide.eclipse.as.dmr. By depending on this plugin you can
>>>> write code as follows:
>>>>
>>>> ModelNode request = new ModelNode();
>>>> request.get(OP).set(READ_CHILDREN_NAMES_OPERATION);
>>>> request.get(CHILD_TYPE).set(getName());
>>>> request.get(OP_ADDR).set(getManagementAddress(getParent()));
>>>> String requestString = request.toJSONString(true);
>>>> String resultString =
>>>> JBoss7ManagerUtil.getService(iserverObject).execute(new
>>>> AS7ManagementDetails(iserverObject), requestString);
>>>> ModelNode resultNode = ModelNode.fromJSONString(resultString);
>>>>
>>>> Another way to do this is via the following:
>>>>
>>>> protected ModelNode executeWithResult(final IServer server,
>>>> final String request) throws Exception {
>>>> String resultJSON = JBoss7ManagerUtil.executeWithService(new
>>>> JBoss7ManagerUtil.IServiceAware<String>() {
>>>> public String execute(IJBoss7ManagerService service)
>>>> throws Exception {
>>>> return service.execute(new
>>>> AS7ManagementDetails(server), request);
>>>> }
>>>> }, server);
>>>> ModelNode result = ModelNode.fromJSONString(resultJSON);
>>>> return result;
>>>> }
>>>>
>>>>
>>>> Hopefully this gives you a good starting point to discovering ports
>>>> and running management commands against AS7, as well as what
>>>> concerns there are. I'm sure Max or the build team can assist /
>>>> advise if you start addign dependencies on jbt plugins.
>>>>
>>>> Good luck!!
>>>>
>>>> - Rob
>>>>
>>>> On 08/03/2012 10:19 PM, Barry Lafond wrote:
>>>>> Rob,
>>>>>
>>>>> Over here in SOA-land the Teiid server//runtime team has changed
>>>>> their integration in AS to adapt to the AS 7 changes.
>>>>>
>>>>> One change in particular, dropping Teiid's custom PORT number, has
>>>>> required Teiid Designer to programmatically discover the JBoss
>>>>> Management HOST/PORT info.
>>>>>
>>>>> Currently my code-base does not depend on JBT code of any kind
>>>>> except for our swt.bot tests. I've looked at the structure of your
>>>>> contributions to WTP's ServerTools framework, so I understand that
>>>>> at a high level.
>>>>>
>>>>> Can you point me in the right direction? maybe another project that
>>>>> already does this?
>>>>>
>>>>> Thx
>>>>>
>>>>> Barry LaFond
>>>>> Teiid Designer Project
>>>>>
>>>>
>>>> _______________________________________________
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>>>> jbosstools-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/jbosstools-dev
>>>
>>> _______________________________________________
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>>> https://lists.jboss.org/mailman/listinfo/jbosstools-dev
>
>
--
Paul Richardson
* p.g.richardson at phantomjinx.co.uk
* pgrichardson at linux.com
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