Re: Cannot access file on Jenkins slave
Thank you everyone! Jess Glick, you were on the right track... that was exactly it: to make a static inner class for my FileCallable. Problem also solved here: http://stackoverflow.com/questions/17727054/cannot-access-file-on-jenkins-slave Vincent Latombe, the strangeness is that fp.exists() works for a folder but not for a file... Marc MacIntyre, build.getWorkspace().child(filename.txt); is the same as new FilePath(build.getWorkspace(), filename.txt);. The FilePath object was rightly gotten, but the problem occured within the .act call. Hugh Perkins, good job you tried under both Linux and Windows. Now that the problem is solved for Windows and that there really was a reason why it did not work, why does Java let it work under Linux? I am still wondering, why does the Jenkins dochttp://javadoc.jenkins-ci.org/hudson/FilePath.html not indicate to make an inner class? -- You received this message because you are subscribed to the Google Groups Jenkins Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Cannot access file on Jenkins slave
Now that the problem is solved for Windows and that there really was a reason why it did not work, why does Java let it work under Linux? Yes. Note that I only tried linux, not Windows. So, the difference might be many things, eg I'm using openjdk 1.7, so maybe a 1.6 versus 1.7 difference, or maybe a Sun versus openjdk difference? -- You received this message because you are subscribed to the Google Groups Jenkins Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Cannot access file on Jenkins slave
Yes, it must be due to the Java version. On Friday, August 2, 2013 11:53:25 AM UTC+2, Hugh Perkins wrote: Yes. Note that I only tried linux, not Windows. So, the difference might be many things, eg I'm using openjdk 1.7, so maybe a 1.6 versus 1.7 difference, or maybe a Sun versus openjdk difference? -- You received this message because you are subscribed to the Google Groups Jenkins Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Cannot access file on Jenkins slave
Hello,
Through my own plugin, I need to know about the existence of a file in the
workspace of a Jenkins slave. But the file can't be found whereas it really
exists on the slave (*D:\workspace\JOB_NAME\test.txt*).
public class MyBuilder extends Builder implements Serializable {
private static final long serialVersionUID = 1L;
public boolean perform(AbstractBuild?, ? build, Launcher launcher,
BuildListener listener)
throws InterruptedException, IOException {
FilePath fp = new FilePath(build.getWorkspace(), test.txt);
String result = fp.act(new FileCallableString() {
private static final long serialVersionUID = 1L;
@Override
public String invoke(File file, VirtualChannel channel) throws
IOException, InterruptedException {
if (file.getAbsoluteFile().exists()){
return file.getName() + exists.;
} else {
return file.getName() + doesn't exist.;
}
}
});
System.out.println(resultat : + result);
Result:
FATAL: remote file operation failed: D:\workspace\JOB_NAME\test.txt at
hudson.remoting.Channel@182752b:Slave
hudson.util.IOException2: remote file operation failed:
D:\workspace\JOB_NAME\test.txt at hudson.remoting.Channel@182752b:Slave
at hudson.FilePath.act(FilePath.java:900)
at hudson.FilePath.act(FilePath.java:877)
at com.company.tlb.proj.MyBuilder.perform(Unknown Source)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at
hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
at hudson.model.Build$BuildExecution.build(Build.java:199)
at hudson.model.Build$BuildExecution.doRun(Build.java:160)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:586)
at hudson.model.Run.execute(Run.java:1575)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)
Caused by: java.io.IOException: Unable to serialize
hudson.FilePath$FileCallableWrapper@18b91cb
at hudson.remoting.UserRequest.serialize(UserRequest.java:166)
at hudson.remoting.UserRequest.init(UserRequest.java:62)
at hudson.remoting.Channel.call(Channel.java:671)
at hudson.FilePath.act(FilePath.java:893)
... 11 more
Caused by: java.io.NotSerializableException: java.io.PrintStream
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
at hudson.remoting.UserRequest._serialize(UserRequest.java:155)
at hudson.remoting.UserRequest.serialize(UserRequest.java:164)
... 14 more
What am I doing wrong?
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Re: Cannot access file on Jenkins slave
I'm a newbie to Jenkins, and I don't know what's going on, but just in case it catalyzes some ideas: - for your builder it says 'unknown source'. maybe it might be useful to include the source code with your builder so you can get the exact line number of the error (I'm not sure if this is possible?) - the underlying error seems to be 'Caused by: java.io.NotSerializableException: java.io.PrintStream'. This doesn't seem to be related to anything to do with the underlying file you are looking for? Are you sure the error is coming from the existence or not of the file you are looking for, and not something more fundamental, like a broken serializer, or similar, somewhere? -- You received this message because you are subscribed to the Google Groups Jenkins Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Cannot access file on Jenkins slave
On Thu, Aug 1, 2013 at 10:20 AM, Stéphane Bruckert
stephane.bruck...@gmail.com wrote:
String result = fp.act(new FileCallableString() {
This is an antipattern: a FileCallable is Serializable, so if you make
it an anonymous inner class, it picks us this$ references to the
enclosing scope. Just make it a static nested class so you can control
all its fields.
(I have a to-do item for the NetBeans plugin for Jenkins development
to flag this mistake with a warning.)
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Re: Cannot access file on Jenkins slave
Hi,
Why not calling fp.exists() [1] directly? The FilePath instance is already
a pointer to the remote filesystem.
Vincent
[1] http://javadoc.jenkins-ci.org/hudson/FilePath.html#exists%28%29
2013/8/1 Jesse Glick jgl...@cloudbees.com
On Thu, Aug 1, 2013 at 10:20 AM, Stéphane Bruckert
stephane.bruck...@gmail.com wrote:
String result = fp.act(new FileCallableString() {
This is an antipattern: a FileCallable is Serializable, so if you make
it an anonymous inner class, it picks us this$ references to the
enclosing scope. Just make it a static nested class so you can control
all its fields.
(I have a to-do item for the NetBeans plugin for Jenkins development
to flag this mistake with a warning.)
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Re: Cannot access file on Jenkins slave
This is working for me:
FilePath setupDetailsFile = build.getWorkspace().child(filename.txt)
On Thu, Aug 1, 2013 at 7:20 AM, Stéphane Bruckert
stephane.bruck...@gmail.com wrote:
Hello,
Through my own plugin, I need to know about the existence of a file in the
workspace of a Jenkins slave. But the file can't be found whereas it really
exists on the slave (*D:\workspace\JOB_NAME\test.txt*).
public class MyBuilder extends Builder implements Serializable {
private static final long serialVersionUID = 1L;
public boolean perform(AbstractBuild?, ? build, Launcher launcher,
BuildListener listener)
throws InterruptedException, IOException {
FilePath fp = new FilePath(build.getWorkspace(), test.txt);
String result = fp.act(new FileCallableString() {
private static final long serialVersionUID = 1L;
@Override
public String invoke(File file, VirtualChannel channel) throws
IOException, InterruptedException {
if (file.getAbsoluteFile().exists()){
return file.getName() + exists.;
} else {
return file.getName() + doesn't exist.;
}
}
});
System.out.println(resultat : + result);
Result:
FATAL: remote file operation failed: D:\workspace\JOB_NAME\test.txt
at hudson.remoting.Channel@182752b:Slave
hudson.util.IOException2: remote file operation failed:
D:\workspace\JOB_NAME\test.txt at hudson.remoting.Channel@182752b:Slave
at hudson.FilePath.act(FilePath.java:900)
at hudson.FilePath.act(FilePath.java:877)
at com.company.tlb.proj.MyBuilder.perform(Unknown Source)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at
hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
at hudson.model.Build$BuildExecution.build(Build.java:199)
at hudson.model.Build$BuildExecution.doRun(Build.java:160)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:586)
at hudson.model.Run.execute(Run.java:1575)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)
Caused by: java.io.IOException: Unable to serialize
hudson.FilePath$FileCallableWrapper@18b91cb
at hudson.remoting.UserRequest.serialize(UserRequest.java:166)
at hudson.remoting.UserRequest.init(UserRequest.java:62)
at hudson.remoting.Channel.call(Channel.java:671)
at hudson.FilePath.act(FilePath.java:893)
... 11 more
Caused by: java.io.NotSerializableException: java.io.PrintStream
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
at hudson.remoting.UserRequest._serialize(UserRequest.java:155)
at hudson.remoting.UserRequest.serialize(UserRequest.java:164)
... 14 more
What am I doing wrong?
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Marc MacIntyre
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Re: Cannot access file on Jenkins slave
Just make it a static nested class so you can control
all its fields.
Currently, the documentation explicitly shows using a nested anonymous
class: http://javadoc.jenkins-ci.org/hudson/FilePath.html#exists%28%29
I tried to reproduce the problem on linux, and failed to reproduce it. My
test code is below. I'm curious why the code runs on linux but not on
Windows? Serialization and so on should behave identically on both
platforms I would think?
public class StephaneBuilder extends Builder implements Serializable {
private static final long serialVersionUID = 1L;
@DataBoundConstructor
public StephaneBuilder() {
}
public boolean perform(AbstractBuild?, ? build, Launcher launcher,
BuildListener listener)
throws InterruptedException, IOException {
listener.getLogger().println(perform start);
listener.getLogger().println(InetAddress.getLocalHost().getHostName());
FilePath fp = new FilePath(build.getWorkspace(), test.txt);
listener.getLogger().println(file + fp.getRemote() + + fp.exists()
);
String result = fp.act(new FileCallableString() {
private static final long serialVersionUID = 1L;
@Override
public String invoke(File file, VirtualChannel channel) throws IOException,
InterruptedException {
StringBuilder stringBuilder = new StringBuilder();
if (file.getAbsoluteFile().exists()){
stringBuilder.append( file.getName() + exists. );
} else {
stringBuilder.append( file.getName() + doesn't exist. );
}
stringBuilder.append(\nhost: + InetAddress.getLocalHost().getHostName()
);
return stringBuilder.toString();
}
});
try {
listener.getLogger().println(launcher.getChannel().call(new
CallableString,Throwable(){
private static final long serialVersionUID = 5093762087527902486L;
@Override
public String call() throws Throwable {
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(channel callable call);
stringBuilder.append(\nhost: + InetAddress.getLocalHost().getHostName()
);
return stringBuilder.toString();
}
}));
} catch( Throwable e ) {
listener.getLogger().println(e.getMessage());
e.printStackTrace(listener.getLogger());
}
listener.getLogger().println(result: + result );
System.out.println(resultat : + result);
return true;
}
@Extension
public static class DescriptorImpl extends DescriptorBuilder {
@Override
public String getDisplayName() {
return StephaneBuilder;
}
}
}
Output:
Started by user anonymous http://localhost:8080/user/null
Building remotely on ubuntu64
http://localhost:8080/computer/ubuntu64 in workspace
/home/ubuntu/slave/workspace/stephanetestubuntu64
perform start
watermelon.localdomain
file /home/ubuntu/slave/workspace/stephanetestubuntu64/test.txt true
channel callable call
host: domU-12-31-39-0A-3C-D0.compute-1.internal
result: test.txt exists.
host: domU-12-31-39-0A-3C-D0.compute-1.internal
Finished: SUCCESS
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