Class: EY::Repo

Inherits:
Object
  • Object
show all
Defined in:
lib/engineyard/repo.rb

Defined Under Namespace

Classes: NoRemotesError, NotAGitRepository

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Repo

$GIT_DIR is what git uses to override the location of the .git dir. $GIT_WORK_TREE is the working tree for git, which we’ll use after $GIT_DIR.

We use this to specify which repo we should look at, since it would also specify where any git commands are directed, thus fooling commands we run anyway.



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# File 'lib/engineyard/repo.rb', line 33

def initialize
end

Instance Attribute Details

#root ⇒ Object (readonly)

Returns the value of attribute root.



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# File 'lib/engineyard/repo.rb', line 25

def root
  @root
end

Class Method Details

.exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engineyard/repo.rb', line 20

def self.exist?
  `git rev-parse --git-dir 2>&1`
  $?.success?
end

Instance Method Details

#current_branch ⇒ Object 



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# File 'lib/engineyard/repo.rb', line 87

def current_branch
  ensure_repository!
  branch = `git symbolic-ref -q HEAD`.chomp.gsub("refs/heads/", "")
  branch.empty? ? nil : branch
end

#ensure_repository! ⇒ Object 



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# File 'lib/engineyard/repo.rb', line 48

def ensure_repository!
  root
end

#fail_on_no_remotes! ⇒ Object 



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# File 'lib/engineyard/repo.rb', line 98

def fail_on_no_remotes!
  if remotes.empty?
    raise EY::Repo::NoRemotesError.new(root)
  end
end

#has_committed_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engineyard/repo.rb', line 52

def has_committed_file?(file)
  ensure_repository!
  `git ls-files --full-name #{file}`.strip == file && $?.success?
end

#has_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engineyard/repo.rb', line 57

def has_file?(file)
  ensure_repository!
  has_committed_file?(file) || root.join(file).exist?
end

#read_file(file, ref = 'HEAD') ⇒ Object

Read the committed version at HEAD (or ref) of a file using the git working tree relative filename. If the file is not committed, but does exist, a warning will be displayed and the file will be read anyway. If the file does not exist, returns nil.

Example:

read_file('config/ey.yml') # will read $GIT_WORK_TREE/config/ey.yml



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# File 'lib/engineyard/repo.rb', line 71

def read_file(file, ref = 'HEAD')
  ensure_repository!
  if has_committed_file?(file)
    # TODO warn if there are unstaged changes.
    `git show #{ref}:#{file}`
  else
    EY.ui.warn <<-WARN
Warn: #{file} is not committed to this git repository:
\t#{root}
This can prevent ey deploy from loading this file for certain server side
deploy-time operations. Commit this file to fix this warning.
    WARN
    root.join(file).read
  end
end

#remotes ⇒ Object 



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# File 'lib/engineyard/repo.rb', line 93

def remotes
  ensure_repository!
  @remotes ||= `git remote -v`.scan(/\t[^\s]+\s/).map { |c| c.strip }.uniq
end