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JRuby gem not available, but JRuby can still run the script


JRuby gem not available, but JRuby can still run the script

By : Kuba xd
Date : November 17 2020, 11:52 AM
wish of those help I'm making my own log monitor script using ruby, and compiling it with JRuby into a JAR using Warbler. I'm running JRuby 1.7.17 64bit. I'm trying to use the gem optparse, which works with MRI, and JRuby, when I run the script like: , Removing the
code :
spec.add_development_dependency "optparse"
spec.add_runtime_dependency "optparse"


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Is it possible for me to write a JRuby script within my Rails app and use JRuby just for that script/class?

Is it possible for me to write a JRuby script within my Rails app and use JRuby just for that script/class?


By : Greg Kotsiuba
Date : March 29 2020, 07:55 AM
Does that help No, JRuby is an alternate Ruby interpreter, so you cannot "switch" to it in the middle of running MRI (the standard Ruby interpreter, written in C).
You can create threads in MRI, but many people use a background job queue to handle this type of problem. If you really wanted to, you could also write a second application in JRuby that your first application made remote calls to.
JRuby Savon Ntlm Authentication (Works in Ruby but fails in JRuby)

JRuby Savon Ntlm Authentication (Works in Ruby but fails in JRuby)


By : Jadoaa Maj
Date : March 29 2020, 07:55 AM
hope this fix your issue We had a similar issue, and unfortunately I'm stuck with JRuby 1.6.8. We had to drop Savon and use: pyu-ntlm-http gem with httpi-ntlm to finally get NTLM authentication to work:
https://rubygems.org/gems/pyu-ntlm-http
code :
request = HTTPI::Request.new
request.url = "http://WebserviceURL"
request.auth.ntlm "username","password"
request.headers["Content-Type"] = "text/xml; charset=UTF-8"
request.headers["SOAPAction"] = "action"
request.body = formatted_soap_body
response = HTTPI.post(request)
Very large retained heap size for org.jruby.RubyRegexp$RegexpCache in JRuby Rails App

Very large retained heap size for org.jruby.RubyRegexp$RegexpCache in JRuby Rails App


By : Sonali Sahu
Date : March 29 2020, 07:55 AM
To fix this issue it probably cached most of the Regexp objects through out the Rails/gems/user-code source ... so it might be quite huge. unless you run into a leak (out-of-memory issue) it's all fine since the actual caches are wrapped in a soft reference, that means until there's enough memory (heap size) they will be held from garbage collection but as soon as you allocate a chunk that does not fit all (or some) of those caches may get garbage collected.
Sending HTTPS requests to a service which doesn't support JRuby's SSL ciphers, from JRuby

Sending HTTPS requests to a service which doesn't support JRuby's SSL ciphers, from JRuby


By : Hotdin Gurning
Date : March 29 2020, 07:55 AM
To fix the issue you can do In the end, after much research and chagrin, we wrote a Java library that sends the HTTP requests and exposed the relevant arguments for this particular use case. Writing Java for JRuby is typically the worst of both worlds, but in this case - the requirements being so simple - it was quite painless.
Here's how things look in the end ruby-side:
code :
java_import "com.mycompany.http.HttpClient"
java_import "com.mycompany.http.SSLOptions"

#
# ...
#

ssl_options = SSLOptions.createFromStrings client_cert, client_key, ca_cert

rv = HttpClient.create(url, ssl_options, 60000, "changeit", "changeit").send(request)
if rv.responseSuccess
  # log.merge(response: rv.responseSuccess.payload)
  rv.responseSuccess.payload
else
  raise rv.responseFailure.cause
end
Run a non-jRuby project after installing jRuby (or remove jRuby)

Run a non-jRuby project after installing jRuby (or remove jRuby)


By : Nemraga
Date : March 29 2020, 07:55 AM
around this issue Looks like it created symlinks; point them back at at the Ruby you want to use.
Use something like rvm to avoid this. (Or rbenv if you prefer.)
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