Class: Tebako::ApplicationBuildState

Inherits:
Object
  • Object
show all
Defined in:
lib/tebako/application_build_state.rb

Overview

Skips the complete application pipeline when its final output is already current.

Constant Summary collapse

SCHEMA_VERSION = 
1

Instance Method Summary collapse

Constructor Details

#initialize(cache_dir:, project_root:, metadata:, excluded: [], implementation_root: nil, stage: "application_build") ⇒ ApplicationBuildState

Returns a new instance of ApplicationBuildState.



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# File 'lib/tebako/application_build_state.rb', line 24

def initialize(cache_dir:, project_root:, metadata:, excluded: [], implementation_root: nil,
               stage: "application_build")
  @cache_dir = cache_dir
  @project_root = project_root
  @metadata = metadata
  @excluded = excluded
  @implementation_root = implementation_root || File.expand_path(__dir__)
  @stage = stage
end

Instance Method Details

#fetch(output) ⇒ Object 



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# File 'lib/tebako/application_build_state.rb', line 34

def fetch(output)
  state_path = state_path(output)
  FileUtils.mkdir_p(@cache_dir)
  File.open("#{state_path}.lock", File::RDWR | File::CREAT, 0o644) do |lock|
    lock.flock(File::LOCK_EX)
    key = build_key
    if current?(state_path, output, key)
      Tebako::BuildReporter.record(
        stage: @stage,
        status: "reused",
        reason: "project, runtime, options, and final package are unchanged",
        key: key
      )
      return :hit
    end

    yield
    save(state_path, output, key)
    Tebako::BuildReporter.record(
      stage: @stage,
      status: "rebuilt",
      reason: "application build inputs or final package changed",
      key: key
    )
    :miss
  end
end