Saved to a wiki:
https://cwiki.apache.org/confluence/x/kQ-8AQ
On Mon, Jul 22, 2013 at 08:53:36PM +0000, Edison Su wrote:
> Yah, you need Eclipse connects to the java agent running on SSVM.
> You can use the following steps:
> 1. login into ssvm, either console proxy or ssh(port 3922)
> 2. kill all the processes named as(run.sh/_run.sh, and java)
> 3. cd /usr/local/cloud/systemvm
> 4. add the " -Xdebug
> -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address={8787}" at end of
> "java " in _run.sh
> 5. ./run.sh, the java agent will start, with debug port 8787 is listened on.
> 6. allow port 8787 in ssvm, "iptables -I INPUT -I eth1 -p tcp -m state
> --state NEW -m tcp --dport 8787 -j ACCEPT", either eth1 or eth2 is ok.
> Then you can connect to agent in ssvm, based on the ip address based on on
> eth1 or eth2, and port 8787
>
> Or above steps sound too complicated to you, you can debug resource code
> locally.
> For example, There is an unit test code, called,
> LocalNfsSecondaryStorageResourceTest, on 4.2 branch, you can mock the
> commands send to resource, then test it locally, but the requirement is that
> your local machine needs to be able to mount nfs(Both Linux/Mac works,
> Windows can't).
> I'd prefer unit test, as it's easier to test/debug/fix.
>
> > -----Original Message-----
> > From: ryanlei750...@gmail.com [mailto:ryanlei750...@gmail.com] On
> > Behalf Of Ryan Lei
> > Sent: Monday, July 22, 2013 3:10 AM
> > To: dev@cloudstack.apache.org
> > Subject: Tracing registerTemplate API, is it possible to connect Eclipse
> > debugger to System VMs?
> >
> > Hi, I've been trying to study how System VMs work in CloudStack code.
> >
> > Tracing the creation of SSVM and CPVM was not a problem. It has to do with
> > updateZone API (&allocationstate=Enabled) and SystemVmLoadScanner.java
> > for both secondary storage and console proxy.
> >
> > But the next usage case, registering a template, was not as straightforward.
> > Tracing the registerTemplate API lead me to a dead end in the send()
> > method in cloud-utils -> com.cloud.utils.nio.Link.java, whose previous step
> > is
> > _link.send(req.toBytes()) in cloud-server ->
> > com.cloud.agent.manager.ConnectedAgentAttache.java.
> >
> > From the MS log, it seems after the DownloadCommand is sent in
> > agent.transport.Request, the registerTemplate API ends.
> > http://apaste.info/pM1E
> >
> > So how do I trace the next Java steps on the SSVM part? Is it possible to
> > connect Eclipse debugger to System VMs? Or what is the best way to trace
> > the interaction between MS and System VMs that involves an agent
> > command?
> >
> > Thanks
> >
> > -------------------------------------------------------------------------------------------
> > Yu-Heng (Ryan) Lei, Associate Reasearcher Chunghwa Telecom Laboratories /
> > Cloud Computing Laboratory
> > ryan...@cht.com.tw<https://email.cht.com.tw/owa/redir.aspx?C=-
> > wE1FEC3G0SWYpVkiWo8SsDdf3ZqO9AIuAPTzRnFYCUi-
> > z4YljtI_hyVKkNHfn9F1Bn-vUWJnQ4.&URL=mailto%3aryanlei%40cht.com.tw>
> > or
> > ryanlei750...@gmail.com
--
Prasanna.,
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