Class: CookbookOmnifetch::GitLocation

Inherits:
BaseLocation show all
Defined in:
lib/cookbook-omnifetch/git.rb

Direct Known Subclasses

GithubLocation

Instance Attribute Summary collapse

Attributes inherited from BaseLocation

#dependency, #options

Instance Method Summary collapse

Methods inherited from BaseLocation

#validate_cached!

Constructor Details

#initialize(dependency, options = {}) ⇒ GitLocation

Returns a new instance of GitLocation.



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# File 'lib/cookbook-omnifetch/git.rb', line 15

def initialize(dependency, options = {})
  super

  @uri      = options[:git]
  @branch   = options[:branch]
  @tag      = options[:tag]
  @ref      = options[:ref]
  @revision = options[:revision]
  @rel      = options[:rel]

  # The revision to parse
  @rev_parse = options[:ref] || options[:branch] || options[:tag] || "master"
end

Instance Attribute Details

#branch ⇒ Object (readonly)

Returns the value of attribute branch.



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# File 'lib/cookbook-omnifetch/git.rb', line 9

def branch
  @branch
end

#ref ⇒ Object (readonly)

Returns the value of attribute ref.



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# File 'lib/cookbook-omnifetch/git.rb', line 11

def ref
  @ref
end

#rel ⇒ Object (readonly)

Returns the value of attribute rel.



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# File 'lib/cookbook-omnifetch/git.rb', line 13

def rel
  @rel
end

#revision ⇒ Object (readonly)

Returns the value of attribute revision.



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# File 'lib/cookbook-omnifetch/git.rb', line 12

def revision
  @revision
end

#tag ⇒ Object (readonly)

Returns the value of attribute tag.



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# File 'lib/cookbook-omnifetch/git.rb', line 10

def tag
  @tag
end

#uri ⇒ Object (readonly)

Returns the value of attribute uri.



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# File 'lib/cookbook-omnifetch/git.rb', line 8

def uri
  @uri
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/cookbook-omnifetch/git.rb', line 92

def ==(other)
  other.is_a?(GitLocation) &&
    other.uri == uri &&
    other.branch == branch &&
    other.tag == tag &&
    other.shortref == shortref &&
    other.rel == rel
end

#cache_key ⇒ Object 



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# File 'lib/cookbook-omnifetch/git.rb', line 141

def cache_key
  "#{dependency.name}-#{revision}"
end

#cached_cookbook ⇒ Object

See Also:



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# File 'lib/cookbook-omnifetch/git.rb', line 84

def cached_cookbook
  if installed?
    @cached_cookbook ||= CookbookOmnifetch.cached_cookbook_class.from_path(install_path)
  else
    nil
  end
end

#install ⇒ Object

Install this git cookbook into the cookbook store. This method leverages a cached git copy and a scratch directory to prevent bad cookbooks from making their way into the cookbook store.

See Also:



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# File 'lib/cookbook-omnifetch/git.rb', line 39

def install
  scratch_path = Pathname.new(Dir.mktmpdir)

  if cached?
    Dir.chdir(cache_path) do
      git %{fetch --force --tags #{uri} "refs/heads/*:refs/heads/*"}
    end
  else
    git %{clone #{uri} "#{cache_path}" --bare --no-hardlinks}
  end

  Dir.chdir(cache_path) do
    @revision ||= git %{rev-parse #{@rev_parse}}
  end

  # Clone into a scratch directory for validations
  git %{clone --no-checkout "#{cache_path}" "#{scratch_path}"}

  # Make sure the scratch directory is up-to-date and account for rel paths
  Dir.chdir(scratch_path) do
    git %{fetch --force --tags "#{cache_path}"}
    git %{reset --hard #{@revision}}

    if rel
      git %{filter-branch --subdirectory-filter "#{rel}" --force}
    end
  end

  # Validate the scratched path is a valid cookbook
  validate_cached!(scratch_path)

  # If we got this far, we should copy
  FileUtils.rm_rf(install_path) if install_path.exist?
  FileUtils.cp_r(scratch_path, install_path)

  # Remove the git history
  FileUtils.rm_rf(File.join(install_path, ".git"))

  install_path.chmod(0777 & ~File.umask)
ensure
  # Ensure the scratch directory is cleaned up
  FileUtils.rm_rf(scratch_path) if scratch_path
end

#install_path ⇒ Pathname?

The path where this cookbook would live in the store, if it were installed.

Returns:

  • (Pathname, nil) 


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# File 'lib/cookbook-omnifetch/git.rb', line 136

def install_path
  CookbookOmnifetch.storage_path
    .join(cache_key)
end

#installed? ⇒ Boolean

Returns:

  • (Boolean)

See Also:

  • BaseLoation#installed?


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# File 'lib/cookbook-omnifetch/git.rb', line 30

def installed?
  (!!revision) && install_path.exist?
end

#lock_data ⇒ Object 



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# File 'lib/cookbook-omnifetch/git.rb', line 111

def lock_data
  out = {}
  out["git"] = uri
  out["revision"] = revision
  out["ref"] = shortref if shortref
  out["branch"] = branch if branch
  out["tag"] = tag if tag
  out["rel"] = rel if rel
  out
end

#to_lock ⇒ Object 



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# File 'lib/cookbook-omnifetch/git.rb', line 122

def to_lock
  out =  "    git: #{uri}\n"
  out << "    revision: #{revision}\n"
  out << "    ref: #{shortref}\n"  if shortref
  out << "    branch: #{branch}\n" if branch
  out << "    tag: #{tag}\n"       if tag
  out << "    rel: #{rel}\n"       if rel
  out
end

#to_s ⇒ Object 



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# File 'lib/cookbook-omnifetch/git.rb', line 101

def to_s
  info = tag || branch || shortref || @rev_parse

  if rel
    "#{uri} (at #{info}/#{rel})"
  else
    "#{uri} (at #{info})"
  end
end