Module: Prebake::ExtBuilderPatch

Defined in:
lib/prebake/ext_builder_patch.rb

Instance Method Summary collapse

Instance Method Details

#build_extensions ⇒ Object 



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# File 'lib/prebake/ext_builder_patch.rb', line 15

def build_extensions
  return super unless @spec.extensions.any?
  return super unless Prebake.enabled?
  return super unless Prebake.backend # nil if config failed

  platform = Platform.generalized
  cache_key = CacheKey.for(@spec.name, @spec.version.to_s, platform)

  expected_checksum = Prebake.backend.fetch_checksum(cache_key)

  if expected_checksum.nil? && Prebake.backend.checksums_supported?
    trigger_rebuild(cache_key)
    return super
  end

  begin
    cached_gem = Prebake.backend.fetch(cache_key)
  rescue StandardError => e
    Logger.debug "Cache fetch error for #{@spec.name}: #{e.message}"
    return super
  end

  unless cached_gem
    Logger.debug "Cache miss for #{cache_key}"
    return super
  end

  if verify_checksum(cache_key, expected_checksum, cached_gem)
    unless portable_for_host?(cached_gem)
      # Binary is valid for other hosts; don't delete from backend.
      return super
    end

    installed = begin
      install_from_cache(cached_gem)
    rescue StandardError => e
      Logger.warn "Cache install failed for #{@spec.name}: #{e.message}, falling back to source build"
      false
    end

    unless installed
      Prebake.backend.delete(cache_key)
      return super
    end
  else
    super
  end
ensure
  FileUtils.rm_f(cached_gem) if cached_gem
end