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 collapse

Attributes inherited from AbstractDownloadStrategy

#cache, #cached_location, #source_modified_time, #url

Instance Method Summary collapse

Methods inherited from AbstractDownloadStrategy

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

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.



185
186
187
188
189
190
 
# File 'download_strategy.rb', line 185

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

Instance Attribute Details

#last_commit ⇒ String (readonly)

Return last commit’s unique identifier for the repository. Return most recent modified timestamp unless overridden.

Returns:



241
242
243
 
# File 'download_strategy.rb', line 241

def last_commit
  source_modified_time.to_i.to_s
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) 


226
227
228
229
 
# File 'download_strategy.rb', line 226

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.



195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
 
# File 'download_strategy.rb', line 195

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: timeout)
  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. 



221
222
223
224
 
# File 'download_strategy.rb', line 221

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) 


231
232
233
 
# File 'download_strategy.rb', line 231

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