> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of David
> Jencks
> Sent: Monday, December 10, 2001 5:33 PM
> To: jboss-dev
> Subject: [JBoss-dev] (rh) startup levels proposal and questions.
>
>
> There's been a lot of discussion recently about (to put it
> bluntly and with
> slight exaggeration) chaos in the rh startup and deployment sequence.
>
> One of the proposals was startup levels, like in linux.
>
> One thing you can do right now is give AutoDeployer lots of directories to
> watch:
>
> <mbean code="org.jboss.deployment.AutoDeployer"
> name="JBOSS-SYSTEM:service=AutoDeployer">
> <attribute name="Deployers">
> JBOSS-SYSTEM:service=ServiceDeployer;
> JCA:service=RARDeployer;
> J2EE:service=J2eeDeployer
> </attribute>
> <attribute name="URLs">
> ../deploy/level1,
> ../deploy/level2,
> ../deploy/level3
> ../deploy/level4,
> ../deploy/level5,
> ../deploy/level6
> </attribute>
> <attribute name="Timeout">
> 3000
> </attribute>
> </mbean>
>
>
> (it may be necessary to invert the loop order in AutoDeployer: the needed
> behaviour is that for each directory, all files should be
> deployed with all
> available deployers, rather than for each deployer, all directories should
> be scanned. I haven't checked to see which way the code is now).
>
> Everything in level1 will be deployed, then everything in level2, etc. I
> think this will give enough control over deployment order for almost all
> circumstances. (I'd like examples of anything it won't work for).
>
> Now, in Linux you can init 3 or init 6. So far you can't do this
> here. Is
> that a valuable feature for jboss? (i.e. being able to say "deploy levels
> 1,2,3. Now deploy 4,5,6. Now undeploy 6, 5, 4, 3) How would it be used?
>
> Would this be more or less convenient to use than a deployment script
> facility where each script basically had a list of what is in one of these
> level directories?
>
I think this is a great idea. So the AutoDeployer would deploy stuff in the
order in which the URLs where specified? So you could have something like
this?:
<mbean code="org.jboss.deployment.AutoDeployer"
name="JBOSS-SYSTEM:service=AutoDeployer">
<attribute name="Deployers">
JBOSS-SYSTEM:service=ServiceDeployer;
JCA:service=RARDeployer;
J2EE:service=J2eeDeployer
</attribute>
<attribute name="URLs">
../deploy/core-mbeans,
../deploy/other-mbeans,
../deploy/ejbs
</attribute>
and it would deploy all in core-mbeans, then other-mbeans, then ejbs?
Bill
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