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require 'capistrano/recipes/deploy/scm/base' module Capistrano module Deploy module SCM # An SCM module for using Git as your source control tool with Capistrano # 2.0. If you are using Capistrano 1.x, use this plugin instead: # # http://scie.nti.st/2007/3/16/capistrano-with-git-shared-repository # # Assumes you are using a shared Git repository. # # Parts of this plugin borrowed from Scott Chacon's version, which I # found on the Capistrano mailing list but failed to be able to get # working. # # FEATURES: # # * Very simple, only requiring 2 lines in your deploy.rb. # * Can deploy different branches, tags, or any SHA1 easily. # * Supports prompting for password / passphrase upon checkout. # (I am amazed at how some plugins don't do this) # * Supports :scm_command, :scm_password, :scm_passphrase Capistrano # directives. # # REQUIREMENTS # ------------ # # Git is required to be installed on your remote machine(s), because a # clone and checkout is done to get the code up there. This is the way # I prefer to deploy; there is no alternative to this, so :deploy_via # is ignored. # # INSTALLATION # ------------ # # Place this file in: # # $GEMPATH/capistrano-2.x.x/lib/capistrano/recipes/deploy/scm/ # # CONFIGURATION # ------------- # # Use this plugin by adding the following line in your config/deploy.rb: # # set :scm, :git # # Set <tt>:repository</tt> to the path of your Git repo: # # set :repository, "someuser@somehost:/home/myproject" # # The above two options are required to be set, the ones below are # optional. # # You may set <tt>:branch</tt>, which is the reference to the branch, tag, # or any SHA1 you are deploying, for example: # # set :branch, "origin/master" # # Otherwise, HEAD is assumed. I strongly suggest you set this. HEAD is # not always the best assumption. # # The <tt>:scm_command</tt> configuration variable, if specified, will # be used as the full path to the git executable on the *remote* machine: # # set :scm_command, "/opt/local/bin/git" # # For compatibility with deploy scripts that may have used the 1.x # version of this plugin before upgrading, <tt>:git</tt> is still # recognized as an alias for :scm_command. # # Set <tt>:scm_password</tt> to the password needed to clone your repo # if you don't have password-less (public key) entry: # # set :scm_password, "my_secret' # # Otherwise, you will be prompted for a password. # # <tt>:scm_passphrase</tt> is also supported. # # The remote cache strategy is also supported. # # set :repository_cache, "git_master" # set :deploy_via, :remote_cache # # For faster clone, you can also use shallow cloning # This will set the '--depth' flag using the depth specified # This cannot be used together with the :remote_cache strategy # # set :git_shallow_clone, 1 # # AUTHORS # ------- # # Garry Dolley http://scie.nti.st # Contributions by Geoffrey Grosenbach http://topfunky.com # and Scott Chacon http://jointheconversation.org class Git < Base # Sets the default command name for this SCM on your *local* machine. # Users may override this by setting the :scm_command variable. default_command "git" # When referencing "head", use the branch we want to deploy or, by # default, Git's reference of HEAD (the latest changeset in the default # branch, usually called "master"). def head configuration[:branch] || 'HEAD' end # Performs a clone on the remote machine, then checkout on the branch # you want to deploy. def checkout(revision, destination) git = command branch = head fail "No branch specified, use for example 'set :branch, \"origin/master\"' in your deploy.rb" unless branch if depth = configuration[:git_shallow_clone] execute = "#{git} clone --depth #{depth} #{configuration[:repository]} #{destination} && " else execute = "#{git} clone #{configuration[:repository]} #{destination} && " end execute += "cd #{destination} && #{git} checkout #{branch}" execute end # Returns the command that will do an "svn update" to the given # revision, for the working copy at the given destination. # # TODO Use specified revision? def sync(revision, destination) # scm :update, verbose, authentication, "-r#{revision}", destination execute = "cd #{destination} && git pull origin #{head}" execute end # Returns a string of diffs between two revisions def diff(from, to=nil) from << "..#{to}" if to scm :diff, from end # Returns a log of changes between the two revisions (inclusive). def log(from, to=nil) from << "..#{to}" if to scm :log, from end # Getting the actual commit id, in case we were passed a tag # or partial sha or something - it will return the sha if you pass a sha, too def query_revision(revision) yield(scm('rev-parse', revision)).chomp end def command # For backwards compatibility with 1.x version of this module configuration[:git] || super end # Determines what the response should be for a particular bit of text # from the SCM. Password prompts, connection requests, passphrases, # etc. are handled here. def handle_data(state, stream, text) logger.info "[#{stream}] #{text}" case text when /\bpassword.*:/i # git is prompting for a password unless pass = configuration[:scm_password] pass = Capistrano::CLI.password_prompt end "#{pass}\n" when %r{\(yes/no\)} # git is asking whether or not to connect "yes\n" when /passphrase/i # git is asking for the passphrase for the user's key unless pass = configuration[:scm_passphrase] pass = Capistrano::CLI.password_prompt end "#{pass}\n" when /accept \(t\)emporarily/ # git is asking whether to accept the certificate "t\n" end end end end end end

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