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don't proceed like normal if brandable_css cmd fails 

fixes: CNVS-23632

it turns out, the way I was doing this ruby would
create a sh subprocess and brandable_css would 
be it's subprocess. so $? would be the sh process
(which would always exit successfully).

test plan:
* in theme editor, try to preview a theme
* but before you do, do something to make it so
brandable_css will fail (like uninstall node or 
rm -rf node_modules or use activity monitor to view
active processes and kill brandable_css when 
it appears)
* it should say "something went wrong generating..."
  instead of continuing like everything worked

Change-Id: I3c80c18381bb52c71d4b79d5b151988d6cf5cc3b
Reviewed-on: https://gerrit.instructure.com/63948
Reviewed-by: Jacob Fugal <jacob@instructure.com>
Reviewed-by: Mike Nomitch <mnomitch@instructure.com>
Tested-by: Jenkins
QA-Review: August Thornton <august@instructure.com>
Product-Review: Ryan Shaw <ryan@instructure.com>
This commit is contained in:
Ryan Shaw 2015-09-24 11:37:49 -06:00
parent dcae1b8d58
commit 079c9e272c
1 changed files with 15 additions and 12 deletions
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27
lib/brandable_css.rb
View File

@ -1,5 +1,6 @@
require 'pathname'
require 'yaml'
require 'open3'
module BrandableCSS
APP_ROOT = defined?(Rails) && Rails.root || Pathname.pwd
@ -97,25 +98,27 @@ module BrandableCSS
# so their scss files can be picked up and compiled with everything else
require 'config/initializers/plugin_symlinks'
command = [cli].push(*args).shelljoin + ' 2>&1'
command = [cli].push(*args).shelljoin
msg = "running BrandableCSS CLI: #{command}"
Rails.logger.try(:debug, msg) if defined?(Rails)
percent_complete = 0
IO.popen(command).each do |line|
puts line.chomp!
Open3.popen2e(command) do |_stdin, stdout_and_stderr, wait_thr|
stdout_and_stderr.each do |line|
puts line.chomp!
# This is a good-enough-for-now approximation to show the progress
# bar in the UI. Since we don't know exactly how many files there are,
# it will progress towards 100% but never quite hit it until it is complete.
# Each tick it will cut 4% of the remaining percentage. Meaning it will look like
# it goes fast at first but then slows down, but will always keep moving.
if opts && opts[:on_progress] && line.starts_with?('compiled ')
percent_complete = percent_complete + ((100.0 - percent_complete) * 0.04)
opts[:on_progress].call(percent_complete)
# This is a good-enough-for-now approximation to show the progress
# bar in the UI. Since we don't know exactly how many files there are,
# it will progress towards 100% but never quite hit it until it is complete.
# Each tick it will cut 4% of the remaining percentage. Meaning it will look like
# it goes fast at first but then slows down, but will always keep moving.
if opts && opts[:on_progress] && line.starts_with?('compiled ')
percent_complete += (100.0 - percent_complete) * 0.04
opts[:on_progress].call(percent_complete)
end
end
raise("Error #{msg}") unless wait_thr.value.success?
end
raise("Error #{msg}") unless $?.success?
end
end