[JIRA] [cvs-plugin] (JENKINS-27538) SCM polling error due to CVS authentication failure while running rlog command ($HOME variable not expanded for private key paths)

Sun, 03 May 2015 00:55:51 -0700

After further investigation, here is a summary of my analysis (Please feel free to comment)

Symptom

CVS Polling fails due to missing private Key, even though the CVS checkout/update as part of a manually triggered build works fine. The path to private key (as part of SCM polling) contains the unexpanded $HOME variable, as indicated in the log.

Cause

I think the issue is caused by the following line of code in AbstractCvs.java (Line 509)

AbstractCvs.java
final EnvVars envVars = project.getLastBuild().getEnvironment(listener);


As the envVars now doesnt seem to contains HOME variable. 



Note: While doing the CVS update/checkout, the envVars seem to be obtained from the current instance of build run containing HOME variable. And that's why the CVS update/checkout works fine.



Line 106 at AbstractCvs.java


final EnvVars envVars = build.getEnvironment(listener);






Fix



I am not sure yet what the best way to approach this problem is. Few things I am exploring are



    
	
  1. Investigate why getLastBuild().getEnvironment(listener) doesnt seem to contain HOME variable
    2. 
	
  2. Modifying protected PollingResult compareRemoteRevisionWith to obtain complete list of envVars
    3. 





Any help or pointers in the right direction would be highly appreciated.
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