Module: HomuraRuntime::BuildSupport

Defined in:
lib/homura/runtime/build_support.rb

Constant Summary collapse

RUNTIME_GEM_NAME = 
"homura-runtime"
SINATRA_GEM_NAME = 
"sinatra-homura"
SEQUEL_D1_GEM_NAME = 
"sequel-d1"
EXCLUDED_GROUPS =

Returns absolute Pathnames for every ‘path:`-declared gem in the project’s Gemfile that should ship in the Workers bundle.

Excludes:

  • gems we already wire in explicitly (homura-runtime / sinatra-homura / sequel-d1)

  • ‘require: false` gems (dev tooling like `gem ’rspec’, path: …, require: false`)

  • gems declared inside ‘group :development do … end` / `group :test do … end` blocks (they don’t ship to production)

%i[
  development
  test
  dev_test
  development_test
  ci
  tools
].freeze

Class Method Summary collapse

Class Method Details

.ensure_standalone_runtime(project_root, current_file: __FILE__, loaded_specs: Gem.loaded_specs) ⇒ Object 



72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
 
# File 'lib/homura/runtime/build_support.rb', line 72

def ensure_standalone_runtime(
  project_root,
  current_file: __FILE__,
  loaded_specs: Gem.loaded_specs
)
  # The homura runtime needs two .mjs glue files alongside the
  # generated `worker.entrypoint.mjs`. Until 0.2.22 we wrote them
  # to `cf-runtime/` at the project root, which made every Ruby
  # repo carry two opaque JS files in source control. Hide them
  # under `build/cf-runtime/` so the build artifact tree owns
  # them — `build/` is already in the example .gitignore template.
  target_dir = Pathname(project_root).join("build", "cf-runtime")
  FileUtils.mkdir_p(target_dir)

  %w[setup-node-crypto.mjs worker_module.mjs].each do |name|
    FileUtils.cp(
      runtime_file(
        name,
        current_file: current_file,
        loaded_specs: loaded_specs
      ),
      target_dir.join(name)
    )
  end

  target_dir
end

.gem_lib(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



33
34
35
 
# File 'lib/homura/runtime/build_support.rb', line 33

def gem_lib(name, loaded_specs: Gem.loaded_specs)
  File.join(gem_root(name, loaded_specs: loaded_specs), "lib")
end

.gem_root(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



17
18
19
20
21
22
23
24
 
# File 'lib/homura/runtime/build_support.rb', line 17

def gem_root(name, loaded_specs: Gem.loaded_specs)
  spec = loaded_spec(name, loaded_specs: loaded_specs)
  return spec.full_gem_path if spec

  raise(
    "homura build: gem #{name} not loaded; use bundle exec from app root"
  )
end

.gem_vendor(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



37
38
39
40
41
42
 
# File 'lib/homura/runtime/build_support.rb', line 37

def gem_vendor(name, loaded_specs: Gem.loaded_specs)
  vendor = File.join(gem_root(name, loaded_specs: loaded_specs), "vendor")
  return vendor if Dir.exist?(vendor)

  nil
end

.loaded_spec(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



13
14
15
 
# File 'lib/homura/runtime/build_support.rb', line 13

def loaded_spec(name, loaded_specs: Gem.loaded_specs)
  loaded_specs[name]
end

.maybe_gem_lib(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



44
45
46
47
48
49
 
# File 'lib/homura/runtime/build_support.rb', line 44

def maybe_gem_lib(name, loaded_specs: Gem.loaded_specs)
  spec = loaded_spec(name, loaded_specs: loaded_specs)
  return nil unless spec

  File.join(spec.full_gem_path, "lib")
end

.maybe_gem_vendor(name, loaded_specs: Gem.loaded_specs) ⇒ Object 



51
52
53
54
55
56
57
58
59
 
# File 'lib/homura/runtime/build_support.rb', line 51

def maybe_gem_vendor(name, loaded_specs: Gem.loaded_specs)
  spec = loaded_spec(name, loaded_specs: loaded_specs)
  return nil unless spec

  vendor = File.join(spec.full_gem_path, "vendor")
  return vendor if Dir.exist?(vendor)

  nil
end

.opal_gem_paths(project_root, loaded_specs: Gem.loaded_specs) ⇒ Object

Returns the union of ‘path_gemfile_entries(project_root)` and any bundled gems that opt in to the Opal pipeline via `spec.metadata`. This is the single source of truth for both `standalone_load_paths` and the auto-await pass that `homura-build` runs. Returns `Pathname` objects pointing at each gem’s root directory.



188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
 
# File 'lib/homura/runtime/build_support.rb', line 188

def opal_gem_paths(project_root, loaded_specs: Gem.loaded_specs)
  wired = [RUNTIME_GEM_NAME, SINATRA_GEM_NAME, SEQUEL_D1_GEM_NAME]
  out = []
  out.concat(path_gemfile_entries(project_root))

  loaded_specs.each_value do |spec|
    next if wired.include?(spec.name)
    meta = spec.metadata
    next unless meta.is_a?(Hash)
    flag = meta["homura.auto_await"]
    next unless flag == "true" || flag == true
    next if spec.full_gem_path.nil?
    gem_path = Pathname(spec.full_gem_path)
    out << gem_path if gem_path.directory?
  end

  out.uniq
end

.path_gemfile_entries(project_root) ⇒ Object 



225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
 
# File 'lib/homura/runtime/build_support.rb', line 225

def path_gemfile_entries(project_root)
  gf = Pathname(project_root).join("Gemfile")
  return [] unless gf.file?

  wired = [RUNTIME_GEM_NAME, SINATRA_GEM_NAME, SEQUEL_D1_GEM_NAME]
  out = []
  group_stack = []

  gf.read.each_line do |line|
    stripped = line.strip
    next if stripped.empty? || stripped.start_with?("#")

    if (m = stripped.match(/\Agroup\s+(.+?)\s+do\b/))
      groups =
        m[1].scan(/[:'"]([A-Za-z0-9_]+)['"]?/).flatten.map(&:to_sym)
      group_stack.push(groups)
      next
    end
    if stripped == "end"
      group_stack.pop unless group_stack.empty?
      next
    end

    next if group_stack.flatten.any? { |g| EXCLUDED_GROUPS.include?(g) }

    m = line.match(/gem\s+['"]([^'"]+)['"][^#]*?path:\s*['"]([^'"]+)['"]/)
    next unless m
    name, rel = m[1], m[2]
    next if wired.include?(name)
    next if line.match?(/require:\s*false/)

    gem_path = Pathname.new(rel).expand_path(project_root)
    out << gem_path if gem_path.directory?
  end
  out.uniq
end

.runtime_file(*names, current_file: __FILE__, loaded_specs: Gem.loaded_specs) ⇒ Object 



61
62
63
64
65
66
67
68
69
70
 
# File 'lib/homura/runtime/build_support.rb', line 61

def runtime_file(
  *names,
  current_file: __FILE__,
  loaded_specs: Gem.loaded_specs
)
  runtime_root(
    current_file: current_file,
    loaded_specs: loaded_specs
  ).join("runtime", *names)
end

.runtime_root(current_file:, loaded_specs: Gem.loaded_specs) ⇒ Object 



26
27
28
29
30
31
 
# File 'lib/homura/runtime/build_support.rb', line 26

def runtime_root(current_file:, loaded_specs: Gem.loaded_specs)
  spec = loaded_spec(RUNTIME_GEM_NAME, loaded_specs: loaded_specs)
  return Pathname(spec.full_gem_path) if spec

  Pathname(current_file).expand_path.join("../..")
end

.standalone_load_paths(project_root, with_db:, loaded_specs: Gem.loaded_specs) ⇒ Object 



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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
 
# File 'lib/homura/runtime/build_support.rb', line 100

def standalone_load_paths(
  project_root,
  with_db:,
  loaded_specs: Gem.loaded_specs
)
  root = Pathname(project_root)
  load_paths = []

  hv = vendor_from_gemfile(root)
  load_paths << hv.to_s if hv

  load_paths += %w[. build/auto_await build/auto_await/app app]
  [
    gem_lib(RUNTIME_GEM_NAME, loaded_specs: loaded_specs),
    gem_vendor(RUNTIME_GEM_NAME, loaded_specs: loaded_specs),
    maybe_gem_lib(SINATRA_GEM_NAME, loaded_specs: loaded_specs),
    maybe_gem_vendor(SINATRA_GEM_NAME, loaded_specs: loaded_specs)
  ].compact.each { |path| load_paths << path }

  if with_db
    [
      gem_vendor(SEQUEL_D1_GEM_NAME, loaded_specs: loaded_specs),
      gem_lib(SEQUEL_D1_GEM_NAME, loaded_specs: loaded_specs)
    ].compact.each { |path| load_paths << path }
  end

  # Pick up any other gems that should ship in the Workers bundle:
  #
  #   * `path:`-resolved gems in the consumer's Gemfile (monorepo
  #     dev mode), and
  #   * RubyGems-installed gems that opt in via
  #     `spec.metadata['homura.auto_await'] = 'true'`.
  #
  # Both go through the same auto-await pass during `homura-build`,
  # and we prefer the rewritten copy under
  # `build/auto_await/gem_<basename>/lib` if present so async chains
  # inside gem code get `__await__` inserted just like consumer
  # app code.
  opal_gem_paths(root, loaded_specs: loaded_specs).each do |gem_path|
    basename = gem_path.basename.to_s
    rewritten_lib =
      root.join("build", "auto_await", "gem_#{basename}", "lib")
    load_paths << rewritten_lib.to_s if rewritten_lib.directory?
    %w[lib vendor].each do |sub|
      dir = gem_path.join(sub)
      load_paths << dir.to_s if dir.directory?
    end
  end

  load_paths << "vendor" if root.join("vendor").directory?
  load_paths << "build"
  load_paths.uniq
end

.standalone_namespace(project_root, suffix) ⇒ Object 



154
155
156
157
158
159
160
161
 
# File 'lib/homura/runtime/build_support.rb', line 154

def standalone_namespace(project_root, suffix)
  base = Pathname(project_root).basename.to_s
  parts = base.split(/[^A-Za-z0-9]+/).reject(&:empty?)
  module_name = parts.map { |part| part[0].upcase + part[1..].to_s }.join
  module_name = "App" if module_name.empty?
  module_name = "App#{module_name}" if module_name.match?(/\A\d/)
  "#{module_name}#{suffix}"
end

.vendor_from_gemfile(project_root) ⇒ Object 



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
 
# File 'lib/homura/runtime/build_support.rb', line 163

def vendor_from_gemfile(project_root)
  gf = Pathname(project_root).join("Gemfile")
  return unless gf.file?

  txt = gf.read
  unless (
           m =
             txt.match(
               /#{Regexp.escape(RUNTIME_GEM_NAME)}['"]\s*,\s*path:\s*['"]([^'"]+)['"]/
             )
         )
    return
  end

  runtime_path = Pathname.new(m[1]).expand_path(project_root)
  vend = runtime_path.join("..", "..", "vendor").expand_path
  vend if vend.directory?
end