Class: VCSDownloadStrategy Abstract Private

Inherits:
AbstractDownloadStrategy show all
Defined in:
download_strategy.rb

Overview

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

This class is abstract.

Abstract superclass for all download strategies downloading from a version control system.

Constant Summary collapse

REF_TYPES =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

[:tag, :branch, :revisions, :revision].freeze

Instance Attribute Summary

Attributes inherited from AbstractDownloadStrategy

#cache, #cached_location, #url

Instance Method Summary collapse

Methods inherited from AbstractDownloadStrategy

#basename, #clear_cache, #quiet!, #quiet?, #shutup!, #source_modified_time, #stage

Methods included from SystemCommand::Mixin

#system_command, #system_command!

Methods included from Context

current, current=, #debug?, #quiet?, #verbose?, #with_context

Constructor Details

#initialize(url, name, version, **meta) ⇒ VCSDownloadStrategy

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns a new instance of VCSDownloadStrategy.



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# File 'download_strategy.rb', line 186

def initialize(url, name, version, **meta)
  super
  @ref_type, @ref = extract_ref(meta)
  @revision = meta[:revision]
  @cached_location = @cache/Utils.safe_filename("#{name}--#{cache_tag}")
end

Instance Method Details

#commit_outdated?(commit) ⇒ Boolean

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:

  • (Boolean) 


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# File 'download_strategy.rb', line 227

def commit_outdated?(commit)
  @last_commit ||= fetch_last_commit
  commit != @last_commit
end

#fetch(timeout: nil) ⇒ Object

Download and cache the repository at AbstractDownloadStrategy#cached_location.



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# File 'download_strategy.rb', line 196

def fetch(timeout: nil)
  end_time = Time.now + timeout if timeout

  ohai "Cloning #{url}"

  if cached_location.exist? && repo_valid?
    puts "Updating #{cached_location}"
    update(timeout: end_time)
  elsif cached_location.exist?
    puts "Removing invalid repository from cache"
    clear_cache
    clone_repo(timeout: end_time)
  else
    clone_repo(timeout: end_time)
  end

  version.update_commit(last_commit) if head?

  return if @ref_type != :tag || @revision.blank? || current_revision.blank? || current_revision == @revision

  raise <<~EOS
    #{@ref} tag should be #{@revision}
    but is actually #{current_revision}
  EOS
end

#fetch_last_commit ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'download_strategy.rb', line 222

def fetch_last_commit
  fetch
  last_commit
end

#head? ⇒ Boolean

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:

  • (Boolean) 


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# File 'download_strategy.rb', line 232

def head?
  version.respond_to?(:head?) && version.head?
end

#last_commit ⇒ String

Return the most recent modified timestamp.

Returns:



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# File 'download_strategy.rb', line 240

def last_commit
  source_modified_time.to_i.to_s
end