Enable remote mode for synced folders

lib/vagrant/plugin/v2/synced_folder.rb

@@ -46,6 +46,8 @@ module Vagrant
 
         include CapabilityHost
 
+        autoload :Remote, "vagrant/plugin/v2/synced_folder/remote"
+
         # This is called early when the synced folder is set to determine
         # if this implementation can be used for this machine. This should
         # return true or false.

lib/vagrant/plugin/v2/synced_folder/remote.rb

@@ -0,0 +1,61 @@
+module Vagrant
+  module Plugin
+    module V2
+      class SyncedFolder
+        # This module enables SyncedFolder for server mode
+        module Remote
+
+          # Add an attribute accesor for the client
+          # when applied to the SyncedFolder class
+          def self.prepended(klass)
+            klass.class_eval do
+              attr_accessor :client
+            end
+          end
+
+          def _initialize(machine, synced_folder_type)
+            self
+          end
+
+          def initialize_capabilities!(host, hosts, capabilities, *args)
+            # no-op
+          end
+
+          # @param [Machine] machine
+          # @param [Boolean] raise_error If true, should raise an exception
+          #   if it isn't usable.
+          # @return [Boolean]
+          def usable?(machine, raise_error=false)
+            begin
+              client.usable(machine.to_proto)
+            rescue
+              raise if raise_error
+            end
+          end
+
+          # @param [Machine] machine
+          # @param [Hash] folders The folders to remove. This will not contain
+          #   any folders that should remain.
+          # @param [Hash] opts Any options for the synced folders.
+          def enable(machine, folders, opts)
+            client.enable(machine.to_proto, folders, opts)
+          end
+
+          # @param [Machine] machine The machine to modify.
+          # @param [Hash] folders The folders to remove. This will not contain
+          #   any folders that should remain.
+          # @param [Hash] opts Any options for the synced folders.
+          def disable(machine, folders, opts)
+            client.disable(machine.to_proto, folders, opts)
+          end
+
+          # @param [Machine] machine
+          # @param [Hash] opts
+          def cleanup(machine, opts)
+            client.cleanup(machine.to_proto, opts)
+          end
+        end
+      end
+    end
+  end
+end

lib/vagrant/shared_helpers.rb

@@ -267,5 +267,6 @@ module Vagrant
     ->{ Vagrant::MachineIndex.prepend(Vagrant::MachineIndex::Remote) },
     ->{ Vagrant::MachineIndex::Entry.prepend(Vagrant::MachineIndex::Entry::Remote::InstanceMethods) },
     ->{ Vagrant::MachineIndex::Entry.extend(Vagrant::MachineIndex::Entry::Remote::ClassMethods) },
+    ->{ Vagrant::Plugin::V2::SyncedFolder.prepend(Vagrant::Plugin::V2::SyncedFolder::Remote) },
   ].freeze
 end