Class: Jets::Builders::RubyPackager

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/jets/builders/ruby_packager.rb

Direct Known Subclasses

RackPackager

Constant Summary collapse

GEM_REGEXP = 
/-(arm|x)\d+.*-(darwin|linux)/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(relative_app_root) ⇒ RubyPackager

Returns a new instance of RubyPackager.



10
11
12
 
# File 'lib/jets/builders/ruby_packager.rb', line 10

def initialize(relative_app_root)
  @full_app_root = "#{build_area}/#{relative_app_root}"
end

Instance Attribute Details

#full_app_root ⇒ Object (readonly)

Returns the value of attribute full_app_root.



9
10
11
 
# File 'lib/jets/builders/ruby_packager.rb', line 9

def full_app_root
  @full_app_root
end

Instance Method Details

#bundle_install ⇒ Object

Installs gems on the current target system: both compiled and non-compiled. If user is on a macosx machine, macosx gems will be installed. If user is on a linux machine, linux gems will be installed.

Copies Gemfile* to /tmp/jets/demo/cache folder and installs gems with bundle install from there.

We take the time to copy Gemfile and bundle into a separate directory because it gets left around to act as a ‘cache’. So, when the builds the project gets built again not all the gems from get installed from the beginning.



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/jets/builders/ruby_packager.rb', line 45

def bundle_install
  full_project_path = @full_app_root
  headline "Bundling: running bundle install in cache area: #{cache_area}."

  copy_gemfiles(full_project_path)
  copy_bundled_gems(full_project_path)

  # Uncomment out to always remove the cache/vendor/gems to debug
  # FileUtils.rm_rf("#{cache_area}/vendor/gems")

  # Remove .bundle folder so .bundle/config doesnt affect how Jets packages gems.
  # Not using BUNDLE_IGNORE_CONFIG=1 to allow home ~/.bundle/config to affect bundling though.
  # This is useful if you have private gems sources that require authentication. Example:
  #
  #    bundle config gems.myprivatesource.com user:pass
  #

  create_bundle_config
  require "bundler" # dynamically require bundler so user can use any bundler
  Bundler.with_unbundled_env do
    sh(
      "cd #{cache_area} && " \
      "env bundle install"
    )
  end
  create_bundle_config(frozen: true)

  rewrite_gemfile_lock("#{cache_area}/Gemfile.lock")

  # Copy the Gemfile.lock back to the project in case it was updated.
  # For example we add the jets-rails to the Gemfile.
  copy_back_gemfile_lock

  puts 'Bundle install success.'
end

#clean_old_submodules ⇒ Object

When using submodules, bundler leaves old submodules behind. Over time this inflates the size of the the cache gems. So we’ll clean it up.



102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
 
# File 'lib/jets/builders/ruby_packager.rb', line 102

def clean_old_submodules
  # https://stackoverflow.com/questions/38800129/parsing-a-gemfile-lock-with-bundler
  lockfile = "#{cache_area}/Gemfile.lock"
  return unless File.exist?(lockfile)

  return if Bundler.bundler_major_version <= 1 # LockfileParser only works for Bundler version 2+

  parser = Bundler::LockfileParser.new(Bundler.read_file(lockfile))
  specs = parser.specs

  # specs = Bundler.load.specs
  # IE: spec.source.to_s: "https://github.com/tongueroo/webpacker.git (at jets@a8c4661)"
  submoduled_specs = specs.select do |spec|
    spec.source.to_s =~ /@\w+\)/
  end

  # find git shas to keep
  # IE: ["a8c4661", "abc4661"]
  git_shas = submoduled_specs.map do |spec|
    md = spec.source.to_s.match(/@(\w+)\)/)
    md[1] # git_sha
  end

  # IE: /tmp/jets/demo/cache/vendor/gems/ruby/2.5.0/bundler/gems/webpacker-a8c46614c675
  Dir.glob("#{cache_area}/vendor/gems/ruby/2.5.0/bundler/gems/*").each do |path|
    sha = path.split('-').last[0..6] # only first 7 chars of the git sha
    unless git_shas.include?(sha)
      # puts "Removing old submoduled gem: #{path}" # uncomment to see and debug
      FileUtils.rm_rf(path) # REMOVE old submodule directory
    end
  end
end

#copy_back_gemfile_lock ⇒ Object 



81
82
83
84
85
 
# File 'lib/jets/builders/ruby_packager.rb', line 81

def copy_back_gemfile_lock
  src = "#{cache_area}/Gemfile.lock"
  dest = "#{@full_app_root}/Gemfile.lock"
  FileUtils.cp(src, dest)
end

#copy_bundle_config ⇒ Object 



203
204
205
206
207
208
209
210
211
212
 
# File 'lib/jets/builders/ruby_packager.rb', line 203

def copy_bundle_config
  # Override project's .bundle/config and ensure that .bundle/config matches
  # at these 2 spots:
  #   app_root/.bundle/config
  #   vendor/gems/.bundle/config
  cache_bundle_config = "#{cache_area}/.bundle/config"
  app_bundle_config = "#{@full_app_root}/.bundle/config"
  FileUtils.mkdir_p(File.dirname(app_bundle_config))
  FileUtils.cp(cache_bundle_config, app_bundle_config)
end

#copy_bundled_gems(full_project_path) ⇒ Object 



135
136
137
138
139
 
# File 'lib/jets/builders/ruby_packager.rb', line 135

def copy_bundled_gems(full_project_path)
  src = "#{full_project_path}/bundled_gems"
  return unless File.exist?(src)
  Jets::Util.cp_r(src, "#{cache_area}/bundled_gems")
end

#copy_cache_gems ⇒ Object 



231
232
233
234
235
236
237
238
239
240
241
242
 
# File 'lib/jets/builders/ruby_packager.rb', line 231

def copy_cache_gems
  vendor_gems = "#{@full_app_root}/vendor/gems"
  if File.exist?(vendor_gems)
    puts "Removing current vendor_gems from project"
    FileUtils.rm_rf(vendor_gems)
  end
  # Leave #{Jets.build_root}/vendor_gems behind to act as cache
  if File.exist?("#{cache_area}/vendor/gems")
    FileUtils.mkdir_p(File.dirname(vendor_gems))
    Jets::Util.cp_r("#{cache_area}/vendor/gems", vendor_gems)
  end
end

#copy_gemfiles(full_project_path) ⇒ Object 



141
142
143
144
145
146
147
148
149
150
 
# File 'lib/jets/builders/ruby_packager.rb', line 141

def copy_gemfiles(full_project_path)
  FileUtils.mkdir_p(cache_area)
  FileUtils.cp("#{full_project_path}/Gemfile", "#{cache_area}/Gemfile")

  gemfile_lock = "#{full_project_path}/Gemfile.lock"
  dest = "#{cache_area}/Gemfile.lock"
  return unless File.exist?(gemfile_lock)

  FileUtils.cp(gemfile_lock, dest)
end

#create_bundle_config(frozen: false) ⇒ Object

On circleci the “#Jets.build_root/.bundle/config” doesnt exist this only happens with ssh debugging, not when the ci.sh script gets ran. But on macosx it exists. Dont know why this is the case.



218
219
220
221
222
223
224
225
226
227
228
229
 
# File 'lib/jets/builders/ruby_packager.rb', line 218

def create_bundle_config(frozen: false)
  FileUtils.rm_rf("#{cache_area}/.bundle")
  frozen_line = %Q|BUNDLE_FROZEN: "true"\n| if frozen
  text =<<-EOL
---
#{frozen_line}BUNDLE_PATH: "vendor/gems"
BUNDLE_WITHOUT: "development:test"
EOL
  bundle_config = "#{cache_area}/.bundle/config"
  FileUtils.mkdir_p(File.dirname(bundle_config))
  IO.write(bundle_config, text)
end

#finish ⇒ Object

build gems in vendor/gems/ruby/2.5.0 (done in install phase)



24
25
26
27
 
# File 'lib/jets/builders/ruby_packager.rb', line 24

def finish
  return unless gemfile_exist?
  tidy
end

#gemfile_exist? ⇒ Boolean

Returns:

  • (Boolean) 


29
30
31
32
 
# File 'lib/jets/builders/ruby_packager.rb', line 29

def gemfile_exist?
  gemfile_path = "#{@full_app_root}/Gemfile"
  File.exist?(gemfile_path)
end

#install ⇒ Object 



14
15
16
17
18
19
20
21
 
# File 'lib/jets/builders/ruby_packager.rb', line 14

def install
  return unless gemfile_exist?

  clean_old_submodules
  bundle_install
  copy_bundle_config
  copy_cache_gems
end

#rewrite_gemfile_lock(gemfile_lock) ⇒ Object

Remove the BUNDLED WITH line since we don’t control the bundler gem version on AWS Lambda And this can cause issues with require ‘bundler/setup’



154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
 
# File 'lib/jets/builders/ruby_packager.rb', line 154

def rewrite_gemfile_lock(gemfile_lock)
  lines = IO.readlines(gemfile_lock)

  # Remove BUNDLED WITH
  # amount is the number of lines to remove
  new_lines, capture, count, amount = [], true, 0, 2
  lines.each do |l|
    capture = false if l.include?('BUNDLED WITH')
    if capture
      new_lines << l
    end
    if capture == false
      count += 1
      capture = count > amount # renable capture
    end
  end

  # Replace things like nokogiri (1.11.1-x86_64-darwin) => nokogiri (1.11.1)
  lines, new_lines = new_lines, []
  lines.each do |l|
    l.sub!(GEM_REGEXP, '') if l =~ GEM_REGEXP
    new_lines << l
  end

  # Make sure platform is ruby
  lines, new_lines, in_platforms_section, platforms_rewritten = new_lines, [], false, false
  lines.each do |l|
    if in_platforms_section && platforms_rewritten # once PLATFORMS has been found, skip all lines until the next section
      if l.present?
        next
      else
        in_platforms_section = false
      end
    end

    if in_platforms_section && !platforms_rewritten # specify ruby as the only platform
      new_lines << "  ruby\n"
      platforms_rewritten = true
      next
    end

    in_platforms_section = l.include?('PLATFORMS')
    new_lines << l
  end

  content = new_lines.join('')
  IO.write(gemfile_lock, content)
end

#tidy ⇒ Object

Clean up extra unneeded files to reduce package size Because we’re removing files (something dangerous) use full paths.



89
90
91
92
93
94
 
# File 'lib/jets/builders/ruby_packager.rb', line 89

def tidy
  puts "Tidying project: removing ignored files to reduce package size."
  tidy_project(@full_app_root)
  # The rack sub project has it's own gitignore.
  tidy_project(@full_app_root+"/rack")
end

#tidy_project(path) ⇒ Object 



96
97
98
 
# File 'lib/jets/builders/ruby_packager.rb', line 96

def tidy_project(path)
  Tidy.new(path).cleanup!
end