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diff --git a/lib/chef/formatters/error_inspectors/api_error_formatting.rb b/lib/chef/formatters/error_inspectors/api_error_formatting.rb
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+#--
+# Author:: Daniel DeLeo (<dan@opscode.com>)
+# Copyright:: Copyright (c) 2012 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.
+#
+
+class Chef
+ module Formatters
+
+ module APIErrorFormatting
+
+ NETWORK_ERROR_CLASSES = [Errno::ECONNREFUSED, Timeout::Error, Errno::ETIMEDOUT, SocketError]
+
+ def describe_network_errors(error_description)
+ error_description.section("Networking Error:",<<-E)
+#{exception.message}
+
+Your chef_server_url may be misconfigured, or the network could be down.
+E
+ error_description.section("Relevant Config Settings:",<<-E)
+chef_server_url "#{server_url}"
+E
+ end
+
+ def describe_401_error(error_description)
+ if clock_skew?
+ error_description.section("Authentication Error:",<<-E)
+Failed to authenticate to the chef server (http 401).
+The request failed because your clock has drifted by more than 15 minutes.
+Syncing your clock to an NTP Time source should resolve the issue.
+E
+ else
+ error_description.section("Authentication Error:",<<-E)
+Failed to authenticate to the chef server (http 401).
+E
+
+ error_description.section("Server Response:", format_rest_error)
+ error_description.section("Relevant Config Settings:",<<-E)
+chef_server_url "#{server_url}"
+node_name "#{username}"
+client_key "#{api_key}"
+
+If these settings are correct, your client_key may be invalid.
+E
+ end
+ end
+
+ def describe_400_error(error_description)
+ error_description.section("Invalid Request Data:",<<-E)
+The data in your request was invalid (HTTP 400).
+E
+ error_description.section("Server Response:",format_rest_error)
+ end
+
+ def describe_500_error(error_description)
+ error_description.section("Unknown Server Error:",<<-E)
+The server had a fatal error attempting to load the node data.
+E
+ error_description.section("Server Response:", format_rest_error)
+ end
+
+ def describe_503_error(error_description)
+ error_description.section("Server Unavailable","The Chef Server is temporarily unavailable")
+ error_description.section("Server Response:", format_rest_error)
+ end
+
+
+ # Fallback for unexpected/uncommon http errors
+ def describe_http_error(error_description)
+ error_description.section("Unexpected API Request Failure:", format_rest_error)
+ end
+
+ # Parses JSON from the error response sent by Chef Server and returns the
+ # error message
+ def format_rest_error
+ Array(Chef::JSONCompat.from_json(exception.response.body)["error"]).join('; ')
+ rescue Exception
+ exception.response.body
+ end
+
+ def username
+ config[:node_name]
+ end
+
+ def api_key
+ config[:client_key]
+ end
+
+ def server_url
+ config[:chef_server_url]
+ end
+
+ def clock_skew?
+ exception.response.body =~ /synchronize the clock/i
+ end
+
+ end
+ end
+end