lib/jamie.rb in jamie-0.1.0.alpha19 vs lib/jamie.rb in jamie-0.1.0.alpha20

@@ -29,12 +29,12 @@
 require 'net/scp'
 require 'net/ssh'
 require 'pathname'
 require 'socket'
 require 'stringio'
-require 'yaml'
 require 'vendor/hash_recursive_merge'
+require 'yaml'
 
 require 'jamie/version'
 
 module Jamie
 
@@ -658,10 +658,24 @@
       self
     ensure
       destroy if destroy_mode == :always
     end
 
+    # Logs in to this instance by invoking a system command, provided by the
+    # instance's driver. This could be an SSH command, telnet, or serial
+    # console session.
+    #
+    # **Note** This method calls exec and will not return.
+    #
+    # @see Driver::Base#login_command
+    def login
+      command, *args = driver.login_command(load_state)
+
+      debug("Login command: #{command} #{args.join(' ')}")
+      Kernel.exec(command, *args)
+    end
+
     private
 
     def validate_options(opts)
       %w(suite platform driver jr logger).each do |k|
         raise ArgumentError, "Attribute '#{k}' is required." if opts[k].nil?
@@ -1026,11 +1040,11 @@
       include ShellOut
       include Logging
 
       attr_writer :instance
 
-      def initialize(config)
+      def initialize(config = {})
         @config = config
         self.class.defaults.each do |attr, value|
           @config[attr] = value unless @config[attr]
         end
       end
@@ -1071,10 +1085,20 @@
       #
       # @param state [Hash] mutable instance and driver state
       # @raise [ActionFailed] if the action could not be completed
       def destroy(state) ; end
 
+      # Returns the shell command array that will log into an instance.
+      #
+      # @param state [Hash] mutable instance and driver state
+      # @return [Array] an array of command line tokens to be used in a
+      #   fork/exec
+      # @raise [ActionFailed] if the action could not be completed
+      def login_command(state)
+        raise ActionFailed, "Remote login is not supported in this driver."
+      end
+
       protected
 
       attr_reader :config, :instance
 
       def logger
@@ -1143,9 +1167,18 @@
         end
       end
 
       def destroy(state)
         raise NotImplementedError, "#destroy must be implemented by subclass."
+      end
+
+      def login_command(state)
+        args  = %W{ -o UserKnownHostsFile=/dev/null }
+        args += %W{ -o StrictHostKeyChecking=no }
+        args += %W{ -i #{config['ssh_key']}} if config['ssh_key']
+        args += %W{ #{config['username']}@#{state['hostname']}}
+
+        ["ssh", *args]
       end
 
       protected
 
       def build_ssh_args(state)