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Posted to issues@maven.apache.org by "Baptiste Gaillard (JIRA)" <ji...@codehaus.org> on 2012/12/20 20:02:13 UTC
[jira] (MSHARED-269) File locking problem on the file associated to
'getOutpuName()', even if the report is external
Baptiste Gaillard created MSHARED-269:
-----------------------------------------
Summary: File locking problem on the file associated to 'getOutpuName()', even if the report is external
Key: MSHARED-269
URL: https://jira.codehaus.org/browse/MSHARED-269
Project: Maven Shared Components
Issue Type: Bug
Components: maven-reporting-impl
Affects Versions: maven-reporting-impl-2.2
Environment: Windows 7 64 bits
JDK 1.7.0_29 (64 bits VM)
Reporter: Baptiste Gaillard
Attachments: FileLock.zip
Creating a Maven Report Mojo which extends the AbstractMavenReport class and returns 'true' in the 'isExternalReport' locks the file associated to the name returned by the 'getOutputName()' function of the Mojo.
The locking problems appears inside the 'executeReport(...)' function of the Mojo, I'm not sure if its normal or not but I have to delete this file to generate a documentation with JSDuck (Javascript documentation).
A full description of the problem is provided here [http://www.mail-archive.com/users@maven.apache.org/msg127863.html]
I provide two Maven projects which allow to reproduce the problem :
- bug-maven-plugin : A very simple plugin which only tries to delete the 'index.html' file, that's to say the name provided by the 'getOutputName()' function.
- bug-site-project : A very simple project which uses the 'bug-maven-plugin' Reporting Plugin, running 'mvn site' on it allow to show the file locking problem I encounter.
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[jira] (MSHARED-269) File locking problem on the file associated to
'getOutpuName()', even if the report is external
Posted by "Baptiste Gaillard (JIRA)" <ji...@codehaus.org>.
[ https://jira.codehaus.org/browse/MSHARED-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=318339#comment-318339 ]
Baptiste Gaillard commented on MSHARED-269:
-------------------------------------------
Hi Olivier and sorry for the delay, I had a lot of work...
When I created this issue I was using Windows 7 and calling Maven using the M2Eclipse plugin (inside Eclipse 4.2.1).
Now I'm using Windows 8, running 'mvn site' on the sample project 'bug-site-maven' also causes the error :
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.0:site (default-site) on project bug-site-project: \
Error during page generation: Error rendering Maven report: Fail to delete the previously generated 'C:\dev_tools\Sources\workspace\bug-site-project\target\site\bug\index.html' ! -> [Help 1]
I believe this problem is not due to M2Eclipse because I also encounter it outside Eclipse (using the command line).
I tried to update all the dependencies I had in the two sample projects I've provided.
Now in the 'bug-maven-project' I use the following deps:
- org.apache.maven:maven-plugin-api:3.1-SNAPSHOT
- org.apache.maven.reporting:maven-reporting-impl:2.3-SNAPSHOT
- org.apache.maven.shared:maven-shared-utils:0.3-SNAPSHOT
- org.apache.maven.doxia:doxia-sink-api:1.4-SNAPSHOT
In the 'bug-site-project' I use the following site plugins :
- org.apache.maven.plugins:maven-project-info-reports-plugin:2.7-SNAPSHOT
- org.apache.maven.plugins:maven-site-plugin:3.3-SNAPSHOT
- com.gomoob.maven.plugins:bug-maven-plugin:1.0
Is this the right thing to do to use the last doxia snapshot deps ?
The use of those SNAPSHOT deps has no effect and the file lock is still there...
If you do not encounter this bug under a UNIX machine I suspect something like a Class Loader locking problem.
This is common undex Windows Java VM and perhaps the 'index.html' created by the Maven site plugins is handled by a URLClassloader somewhere ? (http://docs.oracle.com/javase/7/docs/api/java/net/URLClassLoader.html)
Sadly I do not have much more time to study this problem in details today.
As I'm not a Maven plugin expert can you provide me guides to help me know how can I retrieve references to the class loaders which are used during the execution of a 'mvn site' command ?
I'll try to see which on of the class loaders handles the 'index.html' file...
Thanks,
Baptiste
> File locking problem on the file associated to 'getOutpuName()', even if the report is external
> -----------------------------------------------------------------------------------------------
>
> Key: MSHARED-269
> URL: https://jira.codehaus.org/browse/MSHARED-269
> Project: Maven Shared Components
> Issue Type: Bug
> Components: maven-reporting-impl
> Affects Versions: maven-reporting-impl-2.2
> Environment: Windows 7 64 bits
> JDK 1.7.0_29 (64 bits VM)
> Reporter: Baptiste Gaillard
> Attachments: FileLock.zip
>
>
> Creating a Maven Report Mojo which extends the AbstractMavenReport class and returns 'true' in the 'isExternalReport' locks the file associated to the name returned by the 'getOutputName()' function of the Mojo.
> The locking problems appears inside the 'executeReport(...)' function of the Mojo, I'm not sure if its normal or not but I have to delete this file to generate a documentation with JSDuck (Javascript documentation).
> A full description of the problem is provided here [http://www.mail-archive.com/users@maven.apache.org/msg127863.html]
> I provide two Maven projects which allow to reproduce the problem :
> - bug-maven-plugin : A very simple plugin which only tries to delete the 'index.html' file, that's to say the name provided by the 'getOutputName()' function.
> - bug-site-project : A very simple project which uses the 'bug-maven-plugin' Reporting Plugin, running 'mvn site' on it allow to show the file locking problem I encounter.
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[jira] (MSHARED-269) File locking problem on the file associated to
'getOutpuName()', even if the report is external
Posted by "Olivier Lamy (JIRA)" <ji...@codehaus.org>.
[ https://jira.codehaus.org/browse/MSHARED-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=317969#comment-317969 ]
Olivier Lamy commented on MSHARED-269:
--------------------------------------
did you try with last doxia snapshots ?
I try to find possible lock but no luck (and impossible for me to reproduce as I use an os without issue for files locking :-) )
> File locking problem on the file associated to 'getOutpuName()', even if the report is external
> -----------------------------------------------------------------------------------------------
>
> Key: MSHARED-269
> URL: https://jira.codehaus.org/browse/MSHARED-269
> Project: Maven Shared Components
> Issue Type: Bug
> Components: maven-reporting-impl
> Affects Versions: maven-reporting-impl-2.2
> Environment: Windows 7 64 bits
> JDK 1.7.0_29 (64 bits VM)
> Reporter: Baptiste Gaillard
> Attachments: FileLock.zip
>
>
> Creating a Maven Report Mojo which extends the AbstractMavenReport class and returns 'true' in the 'isExternalReport' locks the file associated to the name returned by the 'getOutputName()' function of the Mojo.
> The locking problems appears inside the 'executeReport(...)' function of the Mojo, I'm not sure if its normal or not but I have to delete this file to generate a documentation with JSDuck (Javascript documentation).
> A full description of the problem is provided here [http://www.mail-archive.com/users@maven.apache.org/msg127863.html]
> I provide two Maven projects which allow to reproduce the problem :
> - bug-maven-plugin : A very simple plugin which only tries to delete the 'index.html' file, that's to say the name provided by the 'getOutputName()' function.
> - bug-site-project : A very simple project which uses the 'bug-maven-plugin' Reporting Plugin, running 'mvn site' on it allow to show the file locking problem I encounter.
--
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