Forum: JRuby Can't install mongrel...

Hi guys!

I'm a Rails Developer and I'm beginning with JRuby on Rails. I'm reading
(and enjoying) 0la Bini's new book, and when I tryed to install 
mongrel's
gem, i get this error:

Error opening script file: extconf.rb (No such file or directory)
ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
    ERROR: Failed to build gem native extension.

ruby extconf.rb install -y mongrel


Gem files will remain installed in
/usr/local/lib/ruby/gems/1.8/gems/fastthread-1.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.8/gems/fastthread-1.0
/ext/fastthread/gem_make.out

One big thing, in his book Ola says we suppose to find a gem compiled 
for
java or jruby, but when I run the command I get this:

Select which gem to install for your platform (java)
 1. mongrel 1.0.1 (mswin32)
 2. mongrel 1.0.1 (ruby)
 3. mongrel 1.0 (ruby)
 4. mongrel 1.0 (mswin32)
 5. mongrel 0.3.13.4 (ruby)
 6. mongrel 0.3.13.3 (mswin32)
 7. mongrel 0.3.13.3 (ruby)
 8. Skip this gem
 9. Cancel installation
>

What could be wrong?

Juan Maria Martinez Arce wrote:
> ruby extconf.rb install -y mongrel
>
>
> Gem files will remain installed in 
> /usr/local/lib/ruby/gems/1.8/gems/fastthread-1.0 for inspection.
> Results logged to 
> /usr/local/lib/ruby/gems/1.8/gems/fastthread-1.0/ext/fastthread/gem_make.out 
>
>
> One big thing, in his book Ola says we suppose to find a gem compiled 
> for java or jruby, but when I run the command I get this:
Hi Juan,

Yeah, I'm sorry about that - we were supposed to have released an
official Mongrel-JRuby gem by now, but that hasn't been done yet. What
you need to do is to download the gem from
http://rubyforge.org/frs/download.php/20097/mongre..., and
install manually by doing
 jruby -S gem install mongrel-1.0.1-jruby.gem

Hope that helps.

Cheers

--
 Ola Bini (http://ola-bini.blogspot.com)
 JRuby Core Developer
 Developer, ThoughtWorks Studios (http://studios.thoughtworks.com)
 Practical JRuby on Rails (http://apress.com/book/view/9781590598818)

 "Yields falsehood when quined" yields falsehood when quined.



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Ola Bini said...
> >
> > for java or jruby, but when I run the command I get this:
> Hi Juan,
> 
> Yeah, I'm sorry about that - we were supposed to have released an 
> official Mongrel-JRuby gem by now, but that hasn't been done yet. What 
> you need to do is to download the gem from 
> http://rubyforge.org/frs/download.php/20097/mongre..., and 
> install manually by doing
>  jruby -S gem install mongrel-1.0.1-jruby.gem
> 
> Hope that helps.

Does this gem provide mongrel rails cluster?

And, regardless, can it be used as a proxy via apache?

--
Cheers,
Marc


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Thanks Ola! I downloaded the gem and installed it locally and that 
worked
just fine!

Now, this won't install the mongrel cluster, to do that you have to run:

jruby -S gem install mongrel_jcluster.

On 9/30/07, marc <gmane@auxbuss.com> wrote:
> Ola Bini said...
> >  jruby -S gem install mongrel-1.0.1-jruby.gem
> Does this gem provide mongrel rails cluster?

No. In MRI land you must be referring to mongrel_cluster gem. It's
merely a relatively convenient way to run a bunch of Mongrel processes
bound to a continuous range of ports. You don't really need it.

> And, regardless, can it be used as a proxy via apache?
Of course, mongrel-jruby is still a web server. It has virtually same
functionality as the original, but running under JVM, and the native
stuff (HTTP parsing) in it is compiled to Java classes.

--
Alexey Verkhovsky
CruiseControl.rb [http://cruisecontrolrb.thoughtworks.com]
RubyWorks [http://rubyworks.thoughtworks.com]

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Alexey Verkhovsky said...
> On 9/30/07, marc <gmane@auxbuss.com> wrote:
> > Ola Bini said...
> > >  jruby -S gem install mongrel-1.0.1-jruby.gem
> > Does this gem provide mongrel rails cluster?
> 
> No. In MRI land you must be referring to mongrel_cluster gem. It's
> merely a relatively convenient way to run a bunch of Mongrel processes
> bound to a continuous range of ports. You don't really need it.

Indeed.

> > And, regardless, can it be used as a proxy via apache?
> Of course, mongrel-jruby is still a web server. It has virtually same
> functionality as the original, but running under JVM, and the native
> stuff (HTTP parsing) in it is compiled to Java classes.

Excellent. Thanks. I'll give it a spin.

--
Cheers,
Marc


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marc said...
> Indeed.
>  
> > > And, regardless, can it be used as a proxy via apache?
> > Of course, mongrel-jruby is still a web server. It has virtually same
> > functionality as the original, but running under JVM, and the native
> > stuff (HTTP parsing) in it is compiled to Java classes.
> 
> Excellent. Thanks. I'll give it a spin.

No joy, I'm afraid.

  jruby -S gem install mongrel-1.0.1-jruby.gem

results in

  ERROR:  While executing gem ... (RuntimeError)
      Error instaling mongrel-1.0.1-jruby.gem:
          mongrel requires gem_plugin >= 0.2.2

while

  gem list gem*

reports

  *** LOCAL GEMS ***

  gem_plugin (0.2.2)
      A plugin system based only on rubygems that uses dependencies only

mongrel is already successfully installed and running, but I presume
something extra is required for jruby.

--
Cheers,
Marc


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>           mongrel requires gem_plugin >= 0.2.2
>       A plugin system based only on rubygems that uses dependencies only
>
> mongrel is already successfully installed and running, but I presume
> something extra is required for jruby.
>
> --
try:
jruby gem list
if it doesn't mention gem_plugin then do
jruby gem install gem_plugin

ruby and jruby keep their gems in different locations by default.

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>
>
> mongrel is already successfully installed and running, but I presume
> something extra is required for jruby.
>
Sorry my last reply, I made a typo.
It's "jruby -S gem list" and "jruby -S gem install"

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Dimitri Krassovski said...
> >           mongrel requires gem_plugin >= 0.2.2
> >       A plugin system based only on rubygems that uses dependencies only
> ruby and jruby keep their gems in different locations by default.
Ah! I see.

After a bit of footling around, I realised that I needed to start
running things from $JRUBY_HOME/bin, since while jruby was being found
okay in other locations, gem was probably being run from /usr/bin. For
example
  jruby gen list
simply errored.

Anyway, I seem to be there with the installs. I'll get to trying to run
mongrel-jruby under apache tomorrow.

Thanks for all the help folks.

--
Cheers,
Marc


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Alexey Verkhovsky said...
> Of course, mongrel-jruby is still a web server. It has virtually same
> functionality as the original, but running under JVM, and the native
> stuff (HTTP parsing) in it is compiled to Java classes.

Having installed mongrel-jruby, and created a rails project, when I try
to start rails I get the following (though, jruby script/server webrick
works okay):

marc@mote:~/testapp$ jruby script/server -p 4040
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails application starting on http://0.0.0.0:4040
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Ruby version is not up-to-date; loading cgi_multipart_eof_fix
** Starting Mongrel listening at 0.0.0.0:4040
** Starting Rails with development environment...
** Rails loaded.
** Loading any Rails specific GemPlugins
Exiting
Signal.java:149:in `sun.misc.Signal.handle':
java.lang.IllegalArgumentException: Signal already used by VM: SIGUSR1
(NativeException)
        from NativeMethodAccessorImpl.java:-2:in
`sun.reflect.NativeMethodAccessorImpl.invoke0'
        from NativeMethodAccessorImpl.java:39:in
`sun.reflect.NativeMethodAccessorImpl.invoke'
        from DelegatingMethodAccessorImpl.java:25:in
`sun.reflect.DelegatingMethodAccessorImpl.invoke'
        from Method.java:597:in `java.lang.reflect.Method.invoke'
        from JavaMethod.java:196:in
`org.jruby.javasupport.JavaMethod.invokeWithExceptionHandling'
        from JavaMethod.java:182:in
`org.jruby.javasupport.JavaMethod.invoke_static'
        from JavaClass.java:371:in `org.jruby.javasupport.JavaClass
$StaticMethodInvoker.execute'
        from SimpleCallbackMethod.java:81:in
`org.jruby.internal.runtime.methods.SimpleCallbackMethod.call'
         ... 230 levels...
        from
/home/marc/jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from
/home/marc/jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from :1
Complete Java stackTrace

It is definitely mongrel-jruby that I have installed:

  marc@mote:~/jruby/bin$ jruby -S gem uninstall mongrel

  You have requested to uninstall the gem:
        mongrel-1.0.1-jruby
  mongrel_jcluster-0.0.1 depends on [mongrel (>= 0.3.13.4)]
  If you remove this gems, one or more dependencies will not be met.
  Continue with Uninstall? [Yn]



--
Cheers,
Marc


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I've installed the same mongrel gem and when i try run the rails 
application
i get the very same error.

when i run jruby script/server webbrick it work just fine, I guess
something's missing, but I can't visualize it. What could it be?

On 10/1/07, Juan Maria Martinez Arce <jmartinezarce@gmail.com> wrote:
> > java.lang.IllegalArgumentException: Signal already used
> by VM: SIGUSR1

... is a JIRA ticket: http://jira.codehaus.org/browse/JRUBY-1277

JVM already has a custom signal handler for USR1, and does not allow
applications to override it.

The workaround is to modify the Mongrel code so that it doesn't try to
register signal handlers. This means that Mongrel will not be able to
hot-reload Rails app it is running, but nobody uses that facility
anyway, so it's ok.

By the way, if anyone knows how to fix this, pray tell.

--
Alexey Verkhovsky
CruiseControl.rb [http://cruisecontrolrb.thoughtworks.com]
RubyWorks [http://rubyworks.thoughtworks.com]

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