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#
# Author:: John Keiser (<jkeiser@chef.io>)
# Copyright:: Copyright 2012-2016, Chef Software 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_relative "../base_fs_object"
require_relative "../exceptions"
require_relative "../../../role"
require_relative "../../../node"
require_relative "../../../json_compat"
class Chef
module ChefFS
module FileSystem
module ChefServer
class RestListEntry < BaseFSObject
def initialize(name, parent, exists = nil)
super(name, parent)
@exists = exists
@this_object_cache = nil
end
def data_handler
parent.data_handler
end
def api_child_name
if %w{ .rb .json }.include? File.extname(name)
File.basename(name, ".*")
else
name
end
end
def api_path
"#{parent.api_path}/#{api_child_name}"
end
def display_path
pth = api_path.start_with?("/") ? api_path : "/#{api_path}"
File.extname(pth).empty? ? pth + ".json" : pth
end
alias_method :path_for_printing, :display_path
def display_name
File.basename(display_path)
end
def org
parent.org
end
def environment
parent.environment
end
def exists?
if @exists.nil?
begin
@this_object_cache = rest.get(api_path)
@exists = true
rescue Net::HTTPClientException => e
if e.response.code == "404"
@exists = false
else
raise
end
rescue Chef::ChefFS::FileSystem::NotFoundError
@exists = false
end
end
@exists
end
def delete(recurse)
# free up cache - it will be hydrated on next check for exists?
@this_object_cache = nil
rest.delete(api_path)
rescue Timeout::Error => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:delete, self, e, "Timeout deleting: #{e}")
rescue Net::HTTPClientException => e
if e.response.code == "404"
raise Chef::ChefFS::FileSystem::NotFoundError.new(self, e)
else
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:delete, self, e, "Timeout deleting: #{e}")
end
end
def read
# Minimize the value (get rid of defaults) so the results don't look terrible
Chef::JSONCompat.to_json_pretty(minimize_value(_read_json))
end
def _read_json
@this_object_cache ? JSON.parse(@this_object_cache) : root.get_json(api_path)
rescue Timeout::Error => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:read, self, e, "Timeout reading: #{e}")
rescue Net::HTTPClientException => e
if $!.response.code == "404"
raise Chef::ChefFS::FileSystem::NotFoundError.new(self, e)
else
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:read, self, e, "HTTP error reading: #{e}")
end
end
def chef_object
# REST will inflate the Chef object using json_class
data_handler.json_class.from_hash(read)
end
def minimize_value(value)
data_handler.minimize(data_handler.normalize(value, self), self)
end
def compare_to(other)
# TODO this pair of reads can be parallelized
# Grab the other value
begin
other_value_json = other.read
rescue Chef::ChefFS::FileSystem::NotFoundError
return [ nil, nil, :none ]
end
# Grab this value
begin
value = _read_json
rescue Chef::ChefFS::FileSystem::NotFoundError
return [ false, :none, other_value_json ]
end
# Minimize (and normalize) both values for easy and beautiful diffs
value = minimize_value(value)
value_json = Chef::JSONCompat.to_json_pretty(value)
begin
other_value = Chef::JSONCompat.parse(other_value_json)
rescue Chef::Exceptions::JSON::ParseError => e
Chef::Log.warn("Parse error reading #{other.path_for_printing} as JSON: #{e}")
return [ nil, value_json, other_value_json ]
end
other_value = minimize_value(other_value)
other_value_json = Chef::JSONCompat.to_json_pretty(other_value)
# free up cache - it will be hydrated on next check for exists?
@this_object_cache = nil
[ value == other_value, value_json, other_value_json ]
end
def rest
parent.rest
end
def write(file_contents)
# free up cache - it will be hydrated on next check for exists?
@this_object_cache = nil
begin
object = Chef::JSONCompat.parse(file_contents)
rescue Chef::Exceptions::JSON::ParseError => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:write, self, e, "Parse error reading JSON: #{e}")
end
if data_handler
object = data_handler.normalize_for_put(object, self)
data_handler.verify_integrity(object, self) do |error|
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:write, self, nil, error.to_s)
end
end
begin
rest.put(api_path, object)
rescue Timeout::Error => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:write, self, e, "Timeout writing: #{e}")
rescue Net::HTTPClientException => e
if e.response.code == "404"
raise Chef::ChefFS::FileSystem::NotFoundError.new(self, e)
else
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:write, self, e, "HTTP error writing: #{e}")
end
end
end
def api_error_text(response)
Chef::JSONCompat.parse(response.body)["error"].join("\n")
rescue
response.body
end
end
end
end
end
end
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