From d4ddb3c2f3356b4dd7392ee7d177da409545fea3 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Wed, 4 Nov 2015 14:20:48 -0800
Subject: [PATCH] commands/provider

---
 lib/vagrant/errors.rb                |  4 ++
 plugins/commands/provider/command.rb | 69 ++++++++++++++++++++++++++++
 plugins/commands/provider/plugin.rb  | 18 ++++++++
 templates/locales/en.yml             |  5 ++
 4 files changed, 96 insertions(+)
 create mode 100644 plugins/commands/provider/command.rb
 create mode 100644 plugins/commands/provider/plugin.rb

diff --git a/lib/vagrant/errors.rb b/lib/vagrant/errors.rb
index 906b8d9bc..f46491604 100644
--- a/lib/vagrant/errors.rb
+++ b/lib/vagrant/errors.rb
@@ -520,6 +520,10 @@ module Vagrant
       error_key(:requires_directory, "vagrant.actions.general.package")
     end
 
+    class ProviderCantInstall < VagrantError
+      error_key(:provider_cant_install)
+    end
+
     class ProviderNotFound < VagrantError
       error_key(:provider_not_found)
     end
diff --git a/plugins/commands/provider/command.rb b/plugins/commands/provider/command.rb
new file mode 100644
index 000000000..791a82246
--- /dev/null
+++ b/plugins/commands/provider/command.rb
@@ -0,0 +1,69 @@
+require 'optparse'
+
+module VagrantPlugins
+  module CommandProvider
+    class Command < Vagrant.plugin("2", :command)
+      def self.synopsis
+        "show provider for this environment"
+      end
+
+      def execute
+        options = {}
+        options[:install] = false
+        options[:usable] = false
+
+        opts = OptionParser.new do |o|
+          o.banner = "Usage: vagrant provider [options] [args]"
+          o.separator ""
+          o.separator "This command interacts with the provider for this environment."
+          o.separator "With no arguments, it'll output the default provider for this"
+          o.separator "environment."
+          o.separator ""
+          o.separator "Options:"
+          o.separator ""
+
+          o.on("--install", "Installs the provider if possible") do |f|
+            options[:install] = f
+          end
+
+          o.on("--usable", "Checks if the named provider is usable") do |f|
+            options[:usable] = f
+          end
+        end
+
+        # Parse the options
+        argv = parse_options(opts)
+        return if !argv
+
+        # Get the machine
+        machine = nil
+        with_target_vms(argv, single_target: true) do |m|
+          machine = m
+        end
+
+        # Output some machine readable stuff
+        @env.ui.machine("provider-name", machine.provider_name, target: machine.name.to_s)
+
+        # Check if we're just doing a usability check
+        if options[:usable]
+          puts machine.provider_name.to_s
+          return 0 if machine.provider.class.usable?(false)
+          return 1
+        end
+
+        # Check if we're requesting installation
+        if options[:install]
+          if !machine.provider.capability?(:install)
+            raise Vagrant::Errors::ProviderCantInstall,
+              provider: machine.provider_name.to_s
+          end
+
+          machine.provider.capability(:install)
+        end
+
+        # Success, exit status 0
+        0
+      end
+    end
+  end
+end
diff --git a/plugins/commands/provider/plugin.rb b/plugins/commands/provider/plugin.rb
new file mode 100644
index 000000000..173088864
--- /dev/null
+++ b/plugins/commands/provider/plugin.rb
@@ -0,0 +1,18 @@
+require "vagrant"
+
+module VagrantPlugins
+  module CommandProvider
+    class Plugin < Vagrant.plugin("2")
+      name "provider command"
+      description <<-DESC
+      The `provider` command is used to interact with the various providers
+      that are installed with Vagrant.
+      DESC
+
+      command("provider", primary: false) do
+        require_relative "command"
+        Command
+      end
+    end
+  end
+end
diff --git a/templates/locales/en.yml b/templates/locales/en.yml
index 9e8c680aa..eee943b1c 100644
--- a/templates/locales/en.yml
+++ b/templates/locales/en.yml
@@ -1001,6 +1001,11 @@ en:
         A file or directory you're attempting to include with your packaged
         box has symlinks in it. Vagrant cannot include symlinks in the
         resulting package. Please remove the symlinks and try again.
+      provider_cant_install: |-
+        The provider '%{provider}' doesn't support automatic installation.
+        This is a limitation of this provider. Please report this as a feature
+        request to the provider in question. To install this provider, you'll
+        have to do so manually.
       provider_not_found: |-
         The provider '%{provider}' could not be found, but was requested to
         back the machine '%{machine}'. Please use a provider that exists.