Class: Jets::Builders::RubyPackager

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

Direct Known Subclasses

RackPackager

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(relative_app_root) ⇒ RubyPackager

Returns a new instance of RubyPackager.



8
9
10
 
# File 'lib/jets/builders/ruby_packager.rb', line 8

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.



7
8
9
 
# File 'lib/jets/builders/ruby_packager.rb', line 7

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.



43
44
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
 
# File 'lib/jets/builders/ruby_packager.rb', line 43

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.



100
101
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
 
# File 'lib/jets/builders/ruby_packager.rb', line 100

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 



79
80
81
82
83
 
# File 'lib/jets/builders/ruby_packager.rb', line 79

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 



194
195
196
197
198
199
200
201
202
203
 
# File 'lib/jets/builders/ruby_packager.rb', line 194

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 



133
134
135
136
137
 
# File 'lib/jets/builders/ruby_packager.rb', line 133

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 



222
223
224
225
226
227
228
229
230
231
232
233
 
# File 'lib/jets/builders/ruby_packager.rb', line 222

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 



139
140
141
142
143
144
145
146
147
148
 
# File 'lib/jets/builders/ruby_packager.rb', line 139

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.



209
210
211
212
213
214
215
216
217
218
219
220
 
# File 'lib/jets/builders/ruby_packager.rb', line 209

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)



22
23
24
25
 
# File 'lib/jets/builders/ruby_packager.rb', line 22

def finish
  return unless gemfile_exist?
  tidy
end

#gemfile_exist? ⇒ Boolean

Returns:

  • (Boolean) 


27
28
29
30
 
# File 'lib/jets/builders/ruby_packager.rb', line 27

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

#install ⇒ Object 



12
13
14
15
16
17
18
19
 
# File 'lib/jets/builders/ruby_packager.rb', line 12

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’



152
153
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
 
# File 'lib/jets/builders/ruby_packager.rb', line 152

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|
    if l.include?("-x86_64-darwin")
      l = l.sub('-x86_64-darwin','')
    end
    new_lines << l
  end

  # Make sure platform is ruby
  lines, new_lines, marker = new_lines, [], false
  lines.each do |l|
    if marker # the next loop has the platform we want to replace
      new_lines << "  ruby\n"
      marker = false
      next
    end
    marker = 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.



87
88
89
90
91
92
 
# File 'lib/jets/builders/ruby_packager.rb', line 87

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 



94
95
96
 
# File 'lib/jets/builders/ruby_packager.rb', line 94

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