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-rw-r--r--lib/chef/shell/shell_session.rb298
1 files changed, 298 insertions, 0 deletions
diff --git a/lib/chef/shell/shell_session.rb b/lib/chef/shell/shell_session.rb
new file mode 100644
index 0000000000..287cf0c166
--- /dev/null
+++ b/lib/chef/shell/shell_session.rb
@@ -0,0 +1,298 @@
+#--
+# Author:: Daniel DeLeo (<dan@kallistec.com>)
+# Author:: Tim Hinderliter (<tim@opscode.com>)
+# Copyright:: Copyright (c) 2009 Daniel DeLeo
+# Copyright:: Copyright (c) 2011 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require 'chef/recipe'
+require 'chef/run_context'
+require 'chef/config'
+require 'chef/client'
+require 'chef/cookbook/cookbook_collection'
+require 'chef/cookbook_loader'
+require 'chef/run_list/run_list_expansion'
+require 'chef/formatters/base'
+require 'chef/formatters/doc'
+require 'chef/formatters/minimal'
+
+module Shell
+ class ShellSession
+ include Singleton
+
+ def self.session_type(type=nil)
+ @session_type = type if type
+ @session_type
+ end
+
+ attr_accessor :node, :compile, :recipe, :run_context
+ attr_reader :node_attributes, :client
+ def initialize
+ @node_built = false
+ formatter = Chef::Formatters.new(Chef::Config.formatter, STDOUT, STDERR)
+ @events = Chef::EventDispatch::Dispatcher.new(formatter)
+ end
+
+ def node_built?
+ !!@node_built
+ end
+
+ def reset!
+ loading do
+ rebuild_node
+ @node = client.node
+ shorten_node_inspect
+ Shell::Extensions.extend_context_node(@node)
+ rebuild_context
+ node.consume_attributes(node_attributes) if node_attributes
+ @recipe = Chef::Recipe.new(nil, nil, run_context)
+ Shell::Extensions.extend_context_recipe(@recipe)
+ @node_built = true
+ end
+ end
+
+ def node_attributes=(attrs)
+ @node_attributes = attrs
+ @node.consume_attributes(@node_attributes)
+ end
+
+ def resource_collection
+ run_context.resource_collection
+ end
+
+ def run_context
+ @run_context ||= rebuild_context
+ end
+
+ def definitions
+ nil
+ end
+
+ def cookbook_loader
+ nil
+ end
+
+ def save_node
+ raise "Not Supported! #{self.class.name} doesn't support #save_node, maybe you need to run chef-shell in client mode?"
+ end
+
+ def rebuild_context
+ raise "Not Implemented! :rebuild_collection should be implemented by subclasses"
+ end
+
+ private
+
+ def loading
+ show_loading_progress
+ begin
+ yield
+ rescue => e
+ loading_complete(false)
+ raise e
+ else
+ loading_complete(true)
+ end
+ end
+
+ def show_loading_progress
+ print "Loading"
+ @loading = true
+ @dot_printer = Thread.new do
+ while @loading
+ print "."
+ sleep 0.5
+ end
+ end
+ end
+
+ def loading_complete(success)
+ @loading = false
+ @dot_printer.join
+ msg = success ? "done.\n\n" : "epic fail!\n\n"
+ print msg
+ end
+
+ def shorten_node_inspect
+ def @node.inspect
+ "<Chef::Node:0x#{self.object_id.to_s(16)} @name=\"#{self.name}\">"
+ end
+ end
+
+ def rebuild_node
+ raise "Not Implemented! :rebuild_node should be implemented by subclasses"
+ end
+
+ end
+
+ class StandAloneSession < ShellSession
+
+ session_type :standalone
+
+ def rebuild_context
+ cookbook_collection = Chef::CookbookCollection.new({})
+ @run_context = Chef::RunContext.new(@node, cookbook_collection, @events) # no recipes
+ @run_context.load(Chef::RunList::RunListExpansionFromDisk.new("_default", [])) # empty recipe list
+ end
+
+ private
+
+ def rebuild_node
+ Chef::Config[:solo] = true
+ @client = Chef::Client.new
+ @client.run_ohai
+ @client.load_node
+ @client.build_node
+ end
+
+ end
+
+ class SoloSession < ShellSession
+
+ session_type :solo
+
+ def definitions
+ @run_context.definitions
+ end
+
+ def rebuild_context
+ @run_status = Chef::RunStatus.new(@node, @events)
+ Chef::Cookbook::FileVendor.on_create { |manifest| Chef::Cookbook::FileSystemFileVendor.new(manifest, Chef::Config[:cookbook_path]) }
+ cl = Chef::CookbookLoader.new(Chef::Config[:cookbook_path])
+ cl.load_cookbooks
+ cookbook_collection = Chef::CookbookCollection.new(cl)
+ @run_context = Chef::RunContext.new(node, cookbook_collection, @events)
+ @run_context.load(Chef::RunList::RunListExpansionFromDisk.new("_default", []))
+ @run_status.run_context = run_context
+ end
+
+ private
+
+ def rebuild_node
+ # Tell the client we're chef solo so it won't try to contact the server
+ Chef::Config[:solo] = true
+ @client = Chef::Client.new
+ @client.run_ohai
+ @client.load_node
+ @client.build_node
+ end
+
+ end
+
+ class ClientSession < SoloSession
+
+ session_type :client
+
+ def save_node
+ @client.save_node
+ end
+
+ def rebuild_context
+ @run_status = Chef::RunStatus.new(@node, @events)
+ Chef::Cookbook::FileVendor.on_create { |manifest| Chef::Cookbook::RemoteFileVendor.new(manifest, Chef::REST.new(Chef::Config[:server_url])) }
+ cookbook_hash = @client.sync_cookbooks
+ cookbook_collection = Chef::CookbookCollection.new(cookbook_hash)
+ @run_context = Chef::RunContext.new(node, cookbook_collection, @events)
+ @run_context.load(Chef::RunList::RunListExpansionFromAPI.new("_default", []))
+ @run_status.run_context = run_context
+ end
+
+ private
+
+ def rebuild_node
+ # Make sure the client knows this is not chef solo
+ Chef::Config[:solo] = false
+ @client = Chef::Client.new
+ @client.run_ohai
+ @client.register
+ @client.load_node
+ @client.build_node
+ end
+
+ end
+
+ class DoppelGangerClient < Chef::Client
+
+ attr_reader :node_name
+
+ def initialize(node_name)
+ @node_name = node_name
+ @ohai = Ohai::System.new
+ end
+
+ # Run the very smallest amount of ohai we can get away with and still
+ # hope to have things work. Otherwise we're not very good doppelgangers
+ def run_ohai
+ @ohai.require_plugin('os')
+ end
+
+ # DoppelGanger implementation of build_node. preserves as many of the node's
+ # attributes, and does not save updates to the server
+ def build_node
+ Chef::Log.debug("Building node object for #{@node_name}")
+ @node = Chef::Node.find_or_create(node_name)
+ ohai_data = @ohai.data.merge(@node.automatic_attrs)
+ @node.consume_external_attrs(ohai_data,nil)
+ @run_list_expansion = @node.expand!('server')
+ @expanded_run_list_with_versions = @run_list_expansion.recipes.with_version_constraints_strings
+ Chef::Log.info("Run List is [#{@node.run_list}]")
+ Chef::Log.info("Run List expands to [#{@expanded_run_list_with_versions.join(', ')}]")
+ @node
+ end
+
+ def register
+ @rest = Chef::REST.new(Chef::Config[:chef_server_url], Chef::Config[:node_name], Chef::Config[:client_key])
+ end
+
+ end
+
+ class DoppelGangerSession < ClientSession
+
+ session_type "doppelganger client"
+
+ def save_node
+ puts "A doppelganger should think twice before saving the node"
+ end
+
+ def assume_identity(node_name)
+ Chef::Config[:doppelganger] = @node_name = node_name
+ reset!
+ rescue Exception => e
+ puts "#{e.class.name}: #{e.message}"
+ puts Array(e.backtrace).join("\n")
+ puts
+ puts "* " * 40
+ puts "failed to assume the identity of node '#{node_name}', resetting"
+ puts "* " * 40
+ puts
+ Chef::Config[:doppelganger] = false
+ @node_built = false
+ Shell.session
+ end
+
+ def rebuild_node
+ # Make sure the client knows this is not chef solo
+ Chef::Config[:solo] = false
+ @client = DoppelGangerClient.new(@node_name)
+ @client.run_ohai
+ @client.register
+ @client.load_node
+ @client.build_node
+ @client.sync_cookbooks
+ end
+
+ end
+
+end
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