[SHACK-145] rename remote connection to target host

components/chef-workstation/lib/chef-workstation/action/base.rb

@@ -4,19 +4,19 @@
 module ChefWorkstation
   module Action
     # Derive new Actions from Action::Base
-    # "connection" is a train connection that may be active and available
-    #              based on
+    # "target_host" is a TargetHost that the action is being applied to. May be nil
+    #               if the action does not require a target.
     # "config" is hash containing any options that your command may need
     #
     # Implement perform_action to perform whatever action your class is intended to do.
     # Run time will be captured via telemetry and categorized under ":action" with the
     # unqualified class name of your Action.
     class Base
-      attr_reader :connection, :config
+      attr_reader :target_host, :config
 
       def initialize(config = {})
         c = config.dup
-        @connection = c.delete :connection
+        @target_host = c.delete :target_host
         # Remaining options are for child classes to make use of.
         @config = c
       end
@@ -90,15 +90,14 @@ def notify(action, *args)
 
       def family
         @family ||= begin
-          f = @connection.platform.family
+          f = target_host.platform.family
           if f == "windows"
             :windows
           else
             :other
           end
         end
       end
-
     end
   end
 end

components/chef-workstation/lib/chef-workstation/action/converge_target.rb

@@ -7,14 +7,14 @@ module ChefWorkstation::Action
   class ConvergeTarget < Base
 
     def perform_action
-      remote_tmp = connection.run_command!(mktemp)
+      remote_tmp = target_host.run_command!(mktemp)
       remote_dir_path = escape_windows_path(remote_tmp.stdout.strip)
       remote_recipe_path = create_remote_recipe(@config, remote_dir_path)
       remote_config_path = create_remote_config(remote_dir_path)
 
-      c = connection.run_command("#{chef_client} #{remote_recipe_path} --config #{remote_config_path}")
+      c = target_host.run_command("#{chef_client} #{remote_recipe_path} --config #{remote_config_path}")
 
-      connection.run_command!("#{delete_folder} #{remote_dir_path}")
+      target_host.run_command!("#{delete_folder} #{remote_dir_path}")
       if c.exit_status == 0
         ChefWorkstation::Log.debug(c.stdout)
         notify(:success)
@@ -30,7 +30,7 @@ def create_remote_recipe(config, dir)
       if config.has_key?(:recipe_path)
         recipe_path = config.delete :recipe_path
         begin
-          connection.upload_file(recipe_path, remote_recipe_path)
+          target_host.upload_file(recipe_path, remote_recipe_path)
         rescue RuntimeError
           raise RecipeUploadFailed.new(recipe_path)
         end
@@ -42,7 +42,7 @@ def create_remote_recipe(config, dir)
           recipe_file = Tempfile.new
           recipe_file.write(create_resource(resource_type, resource_name, properties))
           recipe_file.close
-          connection.upload_file(recipe_file.path, remote_recipe_path)
+          target_host.upload_file(recipe_file.path, remote_recipe_path)
         rescue RuntimeError
           raise ResourceUploadFailed.new()
         ensure
@@ -66,7 +66,7 @@ def create_remote_config(dir)
         config_file = Tempfile.new
         config_file.write(workstation_rb)
         config_file.close
-        connection.upload_file(config_file.path, remote_config_path)
+        target_host.upload_file(config_file.path, remote_config_path)
       rescue RuntimeError
         raise ConfigUploadFailed.new()
       ensure
@@ -78,13 +78,13 @@ def create_remote_config(dir)
     def handle_ccr_error
       require "chef-workstation/errors/ccr_failure_mapper"
       mapper_opts = {}
-      c = connection.run_command(read_chef_stacktrace)
+      c = target_host.run_command(read_chef_stacktrace)
       if c.exit_status == 0
         lines = c.stdout.split("\n")
         # We need to delete the stacktrace after copying it over. Otherwise if we get a
         # remote failure that does not write a chef stacktrace its possible to get an old
         # stale stacktrace.
-        connection.run_command!(delete_chef_stacktrace)
+        target_host.run_command!(delete_chef_stacktrace)
         ChefWorkstation::Log.error("Remote chef-client error follows:")
         ChefWorkstation::Log.error("\n    " + lines.join("\n    "))
       else

components/chef-workstation/lib/chef-workstation/action/install_chef.rb

@@ -3,9 +3,9 @@
 require "chef-workstation/action/install_chef/linux"
 
 module ChefWorkstation::Action::InstallChef
-  def self.instance_for_target(conn, opts = {})
-    opts[:connection] = conn
-    p = conn.platform
+  def self.instance_for_target(target_host, opts = {})
+    opts[:target_host] = target_host
+    p = target_host.platform
     if p.family == "windows" # Family is reliable even when mocking; `windows?` is not.
       Windows.new(opts)
     elsif p.linux?

components/chef-workstation/lib/chef-workstation/action/install_chef/base.rb

@@ -32,7 +32,7 @@ def perform_remote_install
 
     def lookup_artifact
       require "mixlib/install"
-      platform = connection.platform
+      platform = target_host.platform
       platform_name = platform.family == "windows" ? "windows" : platform.name
       c = {
         platform_version: platform.release,
@@ -53,7 +53,7 @@ def download_to_workstation(url_path)
     def upload_to_target(local_path)
       installer_dir = setup_remote_temp_path()
       remote_path = File.join(installer_dir, File.basename(local_path))
-      connection.upload_file(local_path, remote_path)
+      target_host.upload_file(local_path, remote_path)
       remote_path
     end
 

components/chef-workstation/lib/chef-workstation/action/install_chef/linux.rb

@@ -1,7 +1,7 @@
 module ChefWorkstation::Action::InstallChef
   class Linux < ChefWorkstation::Action::InstallChef::Base
     def already_installed_on_target?
-      r = connection.run_command("test -f /opt/chef/bin/chef-client")
+      r = target_host.run_command("test -f /opt/chef/bin/chef-client")
       r.exit_status == 0
     end
 
@@ -12,14 +12,14 @@ def install_chef_to_target(remote_path)
                     when ".deb"
                       "dpkg -i #{remote_path}"
                     end
-      connection.run_command!(install_cmd)
+      target_host.run_command!(install_cmd)
       nil
     end
 
     def setup_remote_temp_path
       installer_dir = "/tmp/chef-installer"
-      connection.run_command!("mkdir -p #{installer_dir}")
-      connection.run_command!("chmod 777 #{installer_dir}")
+      target_host.run_command!("mkdir -p #{installer_dir}")
+      target_host.run_command!("chmod 777 #{installer_dir}")
       installer_dir
     end
   end

components/chef-workstation/lib/chef-workstation/action/install_chef/windows.rb

@@ -11,7 +11,7 @@ def already_installed_on_target?
         Write-Host -NoNewline 'true'
       }
       EOM
-      r = connection.run_command!(cmd)
+      r = target_host.run_command!(cmd)
       r.stdout == "true"
     end
 
@@ -23,7 +23,7 @@ def perform_remote_install
         channel: :stable,
         shell_type: :ps1,
       })
-      connection.run_command! installer.install_command
+      target_host.run_command! installer.install_command
     end
 
     # TODO: These methods are implemented, but are currently
@@ -33,17 +33,17 @@ def install_chef_to_target(remote_path)
       # 'cmd.exe' definitely does - so we'll make the path cmd-friendly
       # before running the command
       cmd = "cmd /c msiexec /package #{remote_path.tr("/", "\\")} /quiet"
-      connection.run_command!(cmd)
+      target_host.run_command!(cmd)
     end
 
     def setup_remote_temp_path
       return @temppath if @temppath
 
-      r = connection.run_command!("Write-Host -NoNewline $env:TEMP")
+      r = target_host.run_command!("Write-Host -NoNewline $env:TEMP")
       temppath = "#{r.stdout}\\chef-installer"
 
       # Failure here is acceptable - the dir could already exist
-      connection.run_command("New-Item -ItemType Directory -Force -Path #{temppath}")
+      target_host.run_command("New-Item -ItemType Directory -Force -Path #{temppath}")
       @temppath = temppath
     end
   end

components/chef-workstation/lib/chef-workstation/cli.rb

@@ -150,14 +150,14 @@ def handle_perform_error(e)
       id = e.respond_to?(:id) ? e.id : e.class.to_s
       message = e.respond_to?(:message) ? e.message : e.to_s
       Telemetry.capture(:error, exception: { id: id, message: message })
-      # TODO: connection assignment below won't work, because the connection is internal the
-      #       action that failed. We can work around this for CW::Error-derived errors by accepting connection
+      # TODO: connection assignment below won't work, because the target host is internal the
+      #       action that failed. We can work around this for CW::Error-derived errors by accepting target host
       #       in the constructor; but we still need to find a happy path for third-party errors
-      #       (train, runtime) - perhaps moving connection tracking and lookup to its own component
+      #       (train, runtime) - perhaps moving target host tracking and lookup to its own component
       #
-      # #conn = @cmd.nil? ? nil : @cmd.connection
-      conn = nil
-      wrapper = ChefWorkstation::WrappedError.new(e, conn)
+      # #target_host = @cmd.nil? ? nil : @cmd.target_host
+      target_host = nil
+      wrapper = ChefWorkstation::WrappedError.new(e, target_host)
       capture_exception_backtrace(wrapper)
       # Now that our housekeeping is done, allow user-facing handling/formatting
       # in `run` to execute by re-raising

components/chef-workstation/lib/chef-workstation/command/base.rb

@@ -82,18 +82,18 @@ def run(params)
       # If reporter is nil a Terminal spinner will be used; otherwise
       # the provided reporter will be used.
       def connect(target, settings, reporter = nil)
-        conn = RemoteConnection.new(target, settings)
+        target_host = TargetHost.new(target, settings)
         if reporter.nil?
-          UI::Terminal.spinner(T.status.connecting, prefix: "[#{conn.config[:host]}]") do |rep|
-            conn.connect!
+          UI::Terminal.spinner(T.status.connecting, prefix: "[#{target_host.config[:host]}]") do |rep|
+            target_host.connect!
             rep.success(T.status.connected)
           end
         else
           reporter.update(T.status.connecting)
-          conn = conn.connect!
+          target_host.connect!
           reporter.success(T.status.connected)
         end
-        conn
+        target_host
       rescue RuntimeError => e
         if reporter.nil?
           UI::Terminal.output(e.message)

components/chef-workstation/lib/chef-workstation/command/target/converge.rb

@@ -17,7 +17,7 @@
 
 require "chef-workstation/command/base"
 require "chef-workstation/command/target"
-require "chef-workstation/remote_connection"
+require "chef-workstation/target_host"
 require "chef-workstation/action/install_chef"
 require "chef-workstation/action/converge_target"
 require "chef-workstation/ui/terminal"
@@ -78,14 +78,14 @@ def run(params)
 
           target = cli_arguments.shift
 
-          @conn = connect(target, config)
-          UI::Terminal.spinner(TS.install_chef.verifying, prefix: "[#{@conn.hostname}]") do |r|
+          @target_host = connect(target, config)
+          UI::Terminal.spinner(TS.install_chef.verifying, prefix: "[#{@target_host.hostname}]") do |r|
             install(r)
           end
 
-          converge_args = { connection: @conn }
+          converge_args = { target_host: @target_host }
           converge_args, spinner_msg = parse_converge_args(converge_args, cli_arguments)
-          UI::Terminal.spinner(spinner_msg, prefix: "[#{@conn.hostname}]") do |r|
+          UI::Terminal.spinner(spinner_msg, prefix: "[#{@target_host.hostname}]") do |r|
             converge(r, converge_args)
           end
         end
@@ -196,7 +196,7 @@ def recipe_strategy?(cli_arguments)
           # Runs the InstallChef action and renders UI updates as
           # the action reports back
         def install(r)
-          installer = Action::InstallChef.instance_for_target(@conn)
+          installer = Action::InstallChef.instance_for_target(@target_host)
           context = Text.status.install_chef
           installer.run do |event, data|
             case event

components/chef-workstation/lib/chef-workstation/error.rb

@@ -44,11 +44,11 @@ def initialize(id, *params)
   end
 
   class WrappedError < StandardError
-    attr_accessor :conn, :contained_exception
-    def initialize(e, connection)
+    attr_accessor :target_host, :contained_exception
+    def initialize(e, target_host)
       super(e.message)
       @contained_exception = e
-      @conn = connection
+      @target_host = target_host
     end
   end
 

components/chef-workstation/lib/chef-workstation/remote_connection.rb → components/chef-workstation/lib/chef-workstation/target_host.rb

@@ -17,13 +17,13 @@
 
 require "chef-workstation/log"
 require "train"
-class ChefWorkstation::RemoteConnection
+class ChefWorkstation::TargetHost
   attr_reader :config, :reporter, :backend
 
-  def self.make_connection(target, opts = {})
-    conn = new(target, opts)
-    conn.connect!
-    conn
+  def self.instance_for_url(target, opts = {})
+    target_host = new(target, opts)
+    target_host.connect!
+    target_host
   end
 
   def initialize(host_url, opts = {}, logger = nil)
@@ -47,7 +47,7 @@ def connect!
       @backend = @train_connection.connection
       @backend.wait_until_ready
     end
-    @backend
+    nil
   end
 
   def hostname

components/chef-workstation/lib/chef-workstation/target_resolver.rb

@@ -1,4 +1,4 @@
-require "chef-workstation/remote_connection"
+require "chef-workstation/target_host"
 
 module ChefWorkstation
   class TargetResolver
@@ -9,7 +9,7 @@ def initialize(unparsed_target, conn_options)
 
     def targets
       @targets ||= @unparsed_target.split(",").map do |target|
-        RemoteConnection.new(target, @conn_options)
+        TargetHost.new(target, @conn_options)
       end
     end
   end

components/chef-workstation/lib/chef-workstation/ui/error_printer.rb

@@ -23,7 +23,7 @@
 
 module ChefWorkstation::UI
   class ErrorPrinter
-    attr_reader :pastel, :show_log, :show_stack, :exception, :conn
+    attr_reader :pastel, :show_log, :show_stack, :exception, :target_host
     # TODO define 't' as a method is a temporary workaround
     # to ensure that text key lookups are testable.
     def t
@@ -62,9 +62,9 @@ def self.dump_unexpected_error(e)
       Terminal.output "=-" * 30
     end
 
-    def initialize(wrapper, unwrapped = nil, conn = nil)
+    def initialize(wrapper, unwrapped = nil, target_host = nil)
       @exception = unwrapped || wrapper.contained_exception
-      @conn = wrapper.conn
+      @target_host = wrapper.target_host || target_host
       @pastel = Pastel.new
       @show_log = exception.respond_to?(:show_log) ? exception.show_log : true
       @show_stack = exception.respond_to?(:show_stack) ? exception.show_stack : true
@@ -175,8 +175,8 @@ def format_other_exception
     end
 
     def formatted_host
-      return nil if conn.nil?
-      cfg = conn.config
+      return nil if target_host.nil?
+      cfg = target_host.config
       port = cfg[:port].nil? ? "" : ":#{cfg[:port]}"
       if cfg[:user].nil?
         user = ""

components/chef-workstation/spec/target_resolver_spec.rb

@@ -23,7 +23,7 @@
 
     context "when a comma-separated list of targets is provided" do
       let(:target_string) { "ssh://node1.example.com,winrm://node2.example.com" }
-      it "returns an array with correct RemoteConnection instances" do
+      it "returns an array with correct TargetHost instances" do
         actual_targets = subject.targets
         expect(actual_targets[0].config[:host]).to eq "node1.example.com"
         expect(actual_targets[1].config[:host]).to eq "node2.example.com"