Module: Textus::Builder::Pipeline

Defined in:
lib/textus/builder/pipeline.rb

Defined Under Namespace

Classes: Deps

Class Method Summary collapse

Class Method Details

.renderers ⇒ Object 



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# File 'lib/textus/builder/pipeline.rb', line 34

def self.renderers
  @renderers ||= {
    "markdown" => Renderer::Markdown,
    "text" => Renderer::Text,
    "json" => Renderer::Json,
    "yaml" => Renderer::Yaml,
  }
end

.run(mentry:, deps:) ⇒ Object 



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# File 'lib/textus/builder/pipeline.rb', line 43

def self.run(mentry:, deps:)
  # 1. Load sources + project + reduce. Only projection-derived entries are
  # buildable in-process; External entries are generated out-of-band and are
  # filtered out upstream (Derived#publish_via), so reaching here with a
  # non-projection source is a wiring bug — fail loudly rather than emit an
  # empty payload (and never re-stamp the volatile generated_at, ADR 0070).
  unless mentry.is_a?(Textus::Manifest::Entry::Derived) && mentry.projection?
    raise UsageError.new(
      "builder: '#{mentry.key}' is not a projection-derived entry; only projections are buildable",
    )
  end

  data =
    Textus::Projection.new(
      reader: deps.reader,
      spec: mentry.source.to_h.transform_keys(&:to_s),
      lister: deps.lister,
      rpc: deps.rpc,
      transform_context: deps.transform_context,
    ).run
  data = data.merge("boot" => deps.inject_boot.call) if mentry.inject_boot && deps.inject_boot

  # 2. Render
  klass = renderers[mentry.format] or
    raise UsageError.new("builder: unsupported format #{mentry.format.inspect} for '#{mentry.key}'")
  bytes = klass.new(template_loader: deps.template_loader).call(mentry: mentry, data: data)

  # 3. Write (idempotent: skip if only generated_at would differ)
  target_path = Key::Path.resolve(deps.manifest.data, mentry)
  FileUtils.mkdir_p(File.dirname(target_path))
  write_if_changed(target_path, bytes, mentry.format)

  target_path
end

.write_if_changed(target_path, bytes, _format) ⇒ Object

Built artifacts are content-addressed (no volatile timestamp, ADR 0070), so identity is plain byte-equality: skip the write when nothing changed. ‘format` is retained for signature stability across renderers.



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# File 'lib/textus/builder/pipeline.rb', line 81

def self.write_if_changed(target_path, bytes, _format)
  return if File.exist?(target_path) && File.binread(target_path) == bytes

  File.binwrite(target_path, bytes)
end