Add JSON output to knife status command

the status subcommand now honor the common option --format

1 files changed, 159 insertions, 0 deletions

diff --git a/lib/chef/knife/core/status_presenter.rb b/lib/chef/knife/core/status_presenter.rb
new file mode 100644
index 0000000000..2cd093d240
--- /dev/null
+++ b/lib/chef/knife/core/status_presenter.rb
@@ -0,0 +1,159 @@
+#
+# Author:: Nicolas DUPEUX (<nicolas.dupeux@arkea.com>)
+# 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/knife/core/text_formatter'
+require 'chef/knife/core/generic_presenter'
+
+class Chef
+  class Knife
+    module Core
+
+      # This module may be included into a knife subcommand class to automatically
+      # add configuration options used by the StatusPresenter
+      module StatusFormattingOptions
+        # :nodoc:
+        # Would prefer to do this in a rational way, but can't be done b/c of
+        # Mixlib::CLI's design :(
+        def self.included(includer)
+          includer.class_eval do
+            option :medium_output,
+              :short   => '-m',
+              :long    => '--medium',
+              :boolean => true,
+              :default => false,
+              :description => 'Include normal attributes in the output'
+
+            option :long_output,
+              :short   => '-l',
+              :long    => '--long',
+              :boolean => true,
+              :default => false,
+              :description => 'Include all attributes in the output'
+          end
+        end
+      end
+
+      #==Chef::Knife::Core::StatusPresenter
+      # A customized presenter for Chef::Node objects. Supports variable-length
+      # output formats for displaying node data
+      class StatusPresenter < GenericPresenter
+
+        def format(data)
+          if parse_format_option == :json
+            summarize_json(data)
+          else
+            super
+          end
+        end
+
+        def summarize_json(list)
+          result_list = []
+          list.each do |node|
+            result = {}
+
+            result["name"] = node.name
+            result["chef_environment"] = node.chef_environment
+            ip = (node[:ec2] && node[:ec2][:public_ipv4]) || node[:ipaddress]
+            fqdn = (node[:ec2] && node[:ec2][:public_hostname]) || node[:fqdn]
+            result["ip"] = ip if ip
+            result["fqdn"] = fqdn if fqdn
+            result["run_list"] = node.run_list if config[:run_list]
+            result["ohai_time"] = node[:ohai_time]
+            result["platform"] = node[:platform] if node[:platform]
+            result["platform_version"] = node[:platform_version] if node[:platform_version]
+
+            if config[:long_output]
+              result["default"]   = node.default_attrs
+              result["override"]  = node.override_attrs
+              result["automatic"] = node.automatic_attrs
+            end
+            result_list << result
+          end
+
+          Chef::JSONCompat.to_json_pretty(result_list)
+        end
+
+        # Converts a Chef::Node object to a string suitable for output to a
+        # terminal. If config[:medium_output] or config[:long_output] are set
+        # the volume of output is adjusted accordingly. Uses colors if enabled
+        # in the ui object.
+        def summarize(list)
+          summarized=''
+          list.each do |data|
+          #if data.kind_of?(Chef::Node)
+            node = data
+            # special case ec2 with their split horizon whatsis.
+            ip = (node[:ec2] && node[:ec2][:public_ipv4]) || node[:ipaddress]
+            fqdn = (node[:ec2] && node[:ec2][:public_hostname]) || node[:fqdn]
+
+            hours, minutes, seconds = time_difference_in_hms(node["ohai_time"])
+            hours_text   = "#{hours} hour#{hours == 1 ? ' ' : 's'}"
+            minutes_text = "#{minutes} minute#{minutes == 1 ? ' ' : 's'}"
+            run_list = "#{node.run_list}" if config[:run_list]
+            if hours > 24
+              color = :red
+              text = hours_text
+            elsif hours >= 1
+              color = :yellow
+              text = hours_text
+            else
+              color = :green
+              text = minutes_text
+            end
+
+            line_parts = Array.new
+            line_parts << @ui.color(text, color) + ' ago' << node.name
+            line_parts << fqdn if fqdn
+            line_parts << ip if ip
+            line_parts << run_list if run_list
+
+            if node['platform']
+              platform = node['platform']
+              if node['platform_version']
+                platform << " #{node['platform_version']}"
+              end
+              line_parts << platform
+            end
+
+            summarized=summarized + line_parts.join(', ') + ".\n"
+          #else
+          #  super
+          end
+          summarized
+        end
+
+        def key(key_text)
+          ui.color(key_text, :cyan)
+        end
+
+        # :nodoc:
+        # TODO: this is duplicated from StatusHelper in the Webui. dedup.
+        def time_difference_in_hms(unix_time)
+          now = Time.now.to_i
+          difference = now - unix_time.to_i
+          hours = (difference / 3600).to_i
+          difference = difference % 3600
+          minutes = (difference / 60).to_i
+          seconds = (difference % 60)
+          return [hours, minutes, seconds]
+        end
+
+      end
+    end
+  end
+end