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No session after session closed in other step #2463

#1

stephasaurus · 1 decade ago

Hi - I am writing a configuration that contains a step A that gathers a lot of build IDs for certain configurations and saves them to a variable. In a later step B in the same config, I take that set of build IDs, instantiate build objects, and then delete those builds from QuickBuild.

Both of these steps run groovy scripts that follow the following general format:


groovy:
try
{
	com.pmease.quickbuild.persistence.SessionManager.openSession();
        //stuff
}
finally
{
       	com.pmease.quickbuild.persistence.SessionManager.closeSession();  
}

The problem I'm running into is that step A can run just fine, but step B will error out with:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.pmease.quickbuild.model.Build.promotedTo, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:383)....

The only way I've gotten step B to run successfully after step A is to restart my QB server. After that the config will run successfully once but after that, it will fail on step B with the error above. Step B is using the "build.getPromotedTo" that was mentioned in a previous thread. I have to use system.getBuildManager() in both step A and B, so I have to use open/close session, and A and B can't be combined into one step. Any help resolving this will be much appreciated. Thank you!

replies 10
views 2591
stars 0

#2

robinshen ADMIN · 1 decade ago

Can you please show me the logic of stepB and also please makes sure that step B runs on QB server to make it work.

#3

stephasaurus · 1 decade ago

Yes, step B is running on the server.

Here is the code for it. I've tested it, and it seems to do what I want it to do, but it'll only run successfully after I restart the QB server.


groovy:
  
try
{
	com.pmease.quickbuild.persistence.SessionManager.openSession();
	String []buildIds = vars.getValue("buildIds").toString().split(",");

	for (id in buildIds)
	{
	    com.pmease.quickbuild.model.Build codeBuild = (com.pmease.quickbuild.model.Build)system.getBuildManager().load(id.toLong());
		
	    if(codeBuild.getPromotedFrom() != null)
	    {
	    	com.pmease.quickbuild.model.Build parentBuild = (com.pmease.quickbuild.model.Build)system.getBuildManager().load(codeBuild.getPromotedFrom().getId().toLong());  
		system.getBuildManager().delete(parentBuild);	
	    }
	    deleteBuildsRec(codeBuild);
	}	
}
finally
{
	com.pmease.quickbuild.persistence.SessionManager.closeSession();  
}

def deleteBuildsRec(delBuild) 
{
	if(delBuild.getPromotedTo().size() > 0)
	{
		for(promotedBuild in delBuild.getPromotedTo())
		{
			deleteBuildsRec(promotedBuild);
		}
	}
	system.getBuildManager().delete(delBuild);
}

#4

robinshen ADMIN · 1 decade ago

Which QB version are you using? I tested this on latest QB5 version and it works every time.

#5

stephasaurus · 1 decade ago

We are also using QB5. It usually happens if I run the step over and over in quick succession (within 1 minute).

#6

robinshen ADMIN · 1 decade ago

I am running this logic many times within one minute but can not reproduce the issue. Is this happening consistently at your side? If yes, can you please create a sample database demonstrating the issue?

#7

Gouss · 1 decade ago

Hello,

I have the same kind of problem on a node executing a plugin that should list the version name given a configuration.

basically I found on the forum the SessionManager.OpenSession() that does the work when I run the step once logged in but on the node, no session is especially open.


	SessionManager.openSession();
	try {
		for (int idx=0; idx < configList.length; idx++) {
			...
			Configuration config = Quickbuild.getInstance().getConfigurationManager().get(buildpath);
			...
	} catch (Exception e) {
		throw new QuickbuildException(e.getMessage());
	} finally {
		SessionManager.closeSession();
	}

hopping this will help.

PS: I am searching for a way to create a session for the user that run the job on the nodes but have not found it yet. version is 5.1.6, 2013-12-25

#8

robinshen ADMIN · 1 decade ago

>> "PS: I am searching for a way to create a session for the user that run the job on the nodes but have not found it yet. version is 5.1.6, 2013-12-25"

The database session does not differentiate between users, or do you mean some other thing?

#9

Gouss · 1 decade ago

I would like to use this code in my plugin as a step launched from a node that is not the server but it fails with a "no session or session was closed".

I wondered how to create a session on this type of node or any other solution to have this step working (and avoiding to have a queue of tasks waiting on the server).

#10

robinshen ADMIN · 1 decade ago

Hibernate session only works on server. If you are running from non-server nodes, consider calling grid.serverNode.executeJob to execute the job on server node and then in the job class call hibernate session relevant features to do the job.

#11

Gouss · 1 decade ago

thanks for the tip!