Latest version of COSMOS crashing

[michaellmonaghan]

I just installed COSMOS on my mac. The launcher and other tools work fine, but the CmdTlmServer crashes when the gui is loaded. The error is FATAL: ArgumentError : tr is not a class method referring to this line

$ cosmos install example
...
$ cd example
$ bundle install
...
$ bundle show
Gems included by the bundle:
  * bundler (1.16.3)
  * coderay (1.1.2)
  * cosmos (4.2.4)
  * httpclient (2.8.3)
  * json (2.1.0)
  * method_source (0.9.0)
  * mini_portile2 (2.3.0)
  * nokogiri (1.8.4)
  * opengl-bindings (1.6.6)
  * pry (0.11.3)
  * pry-doc (0.13.4)
  * puma (3.12.0)
  * qtbindings (4.8.6.5)
  * rack (2.0.5)
  * rake (12.3.1)
  * rdoc (6.0.4)
  * ruby-termios (0.9.6)
  * rubyzip (1.2.1)
  * snmp (1.2.0)
  * uuidtools (2.1.5)
  * yard (0.9.15)
$ bundle exe ruby tools/CmdTlmServer
2018/07/19 16:17:37.957  FATAL: Fatal Exception! Exiting...
2018/07/19 16:17:37.957  FATAL: ArgumentError : tr is not a class method

/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/gui/targets_tab.rb:71:in `method_missing'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/gui/targets_tab.rb:71:in `block in populate_targets_table'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/gui/targets_tab.rb:70:in `each'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/gui/targets_tab.rb:70:in `populate_targets_table'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/gui/targets_tab.rb:47:in `populate'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/cmd_tlm_server_gui.rb:173:in `block in start'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/qtbindings-4.8.6.5/lib/Qt4.rb:104:in `block in execute_in_main_thread'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/qtbindings-4.8.6.5/lib/Qt4.rb:57:in `callback_timeout'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/qtbindings-4.8.6.5/lib/Qt/qtruby4.rb:479:in `qt_metacall'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/qtbindings-4.8.6.5/lib/Qt/qtruby4.rb:479:in `method_missing'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/qtbindings-4.8.6.5/lib/Qt/qtruby4.rb:479:in `exec'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/gui/qt_tool.rb:297:in `block in run'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/top_level.rb:717:in `set_working_dir'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/gui/qt_tool.rb:278:in `run'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/cmd_tlm_server_gui.rb:647:in `block in run'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/top_level.rb:532:in `catch_fatal_exception'
/Users/mlmonagh/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/cosmos-4.2.4/lib/cosmos/tools/cmd_tlm_server/cmd_tlm_server_gui.rb:608:in `run'
tools/CmdTlmServer:15:in `block in <main>'
/Users/mlmonagh/example/tools/tool_launch.rb:16:in `tool_launch'
tools/CmdTlmServer:13:in `<main>'

Could this be a problem with incompatible versions?

[michaellmonaghan]

Just reinstalled brew and ran the installer script, no luck.

[ghost]

Weird. It appears that your as built version of the qtbindings didn't map the tr method (which I think is a translation method for internationalization of labels) to the top level Qt::Object. I'm not sure why this happened but I think I can provide a work around.

Ensure you have a user_version.rb file in your project's lib directory. Normally this file simply sets the USER_VERSION constant like so:

USER_VERSION = "Undefined"

Change this to override the tr method which is missing:

module Qt
  Object.singleton_class.class_eval do
    define_method(:tr) do |label|
      return label
    end
  end
end

[ghost]

@ryanatball Should we simply remove these methods? We're only using them in a few places and have no plans to do other languages in COSMOS.

[ghost]

@jasonatball Yes we should remove all uses of tr() as we don't do any internationalization anyways, and that may be a good enough fix for whatever the root cause is here. It should work though... tr() should be a defined method.

I haven't had a chance to try this on a Mac yet.

[michaellmonaghan]

@jasonatball your work around did the trick!

[michaellmonaghan]

It seems odd that a function would be missing for a particular architecture so I've been debugging. I'll leave this here in case it is of any use.

$ bundle console
irb(main):001:0> require 'Qt'
=> true
irb(main):002:0> puts(Qt::Object.singleton_methods)
connect
staticMetaObject
const_missing
method_missing
new
ancestors
slots
signals
private_slots
q_signal
q_slot
q_classinfo
=> nil