This class defines the abstract interface for all Capistrano deployment strategies. Subclasses must implement at least the deploy! method.
Performs a check on the remote hosts to determine whether everything is setup such that a deploy could succeed.
# File lib/capistrano/recipes/deploy/strategy/base.rb, line 30 def check! Dependencies.new(configuration) do |d| d.remote.directory(configuration[:releases_path]).or("`#{configuration[:releases_path]}' does not exist. Please run `cap deploy:setup'.") d.remote.writable(configuration[:deploy_to]).or("You do not have permissions to write to `#{configuration[:deploy_to]}'.") d.remote.writable(configuration[:releases_path]).or("You do not have permissions to write to `#{configuration[:releases_path]}'.") end end
Executes the necessary commands to deploy the revision of the source code identified by the revision variable. Additionally, this should write the value of the revision variable to a file called REVISION, in the base of the deployed revision. This file is used by other tasks, to perform diffs and such.
# File lib/capistrano/recipes/deploy/strategy/base.rb, line 24 def deploy! raise NotImplementedError, "`deploy!' is not implemented by #{self.class.name}" end
This is to allow helper methods like "run" and "put" to be more easily accessible to strategy implementations.
# File lib/capistrano/recipes/deploy/strategy/base.rb, line 42 def method_missing(sym, *args, &block) if configuration.respond_to?(sym) configuration.send(sym, *args, &block) else super end end
A wrapper for Kernel#system that logs the command being executed.
# File lib/capistrano/recipes/deploy/strategy/base.rb, line 51 def system(*args) cmd = args.join(' ') result = nil if RUBY_PLATFORM =~ /win32/ cmd = cmd.split(/\s+/).collect {|w| w.match(/^[\w+]+:\/\//) ? w : w.gsub('/', '\') }.join(' ') # Split command by spaces, change / by \\ unless element is a some+thing:// cmd.gsub!(/^cd /,'cd /D ') # Replace cd with cd /D cmd.gsub!(/&& cd /,'&& cd /D ') # Replace cd with cd /D logger.trace "executing locally: #{cmd}" elapsed = Benchmark.realtime do result = super(cmd) end else logger.trace "executing locally: #{cmd}" elapsed = Benchmark.realtime do result = super end end logger.trace "command finished in #{(elapsed * 1000).round}ms" result end
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