Class: Chef::ChefFS::FileSystem::RestListEntry

Inherits:
BaseFSObject show all
Defined in:
lib/chef/chef_fs/file_system/rest_list_entry.rb

Instance Attribute Summary

Attributes inherited from BaseFSObject

#name, #parent, #path

Instance Method Summary collapse

Methods inherited from BaseFSObject

#can_have_child?, #child, #children, #create_child, #dir?, #path_for_printing, #root

Constructor Details

#initialize(name, parent, exists = nil) ⇒ RestListEntry

Returns a new instance of RestListEntry.



29
30
31
32
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 29

def initialize(name, parent, exists = nil)
  super(name, parent)
  @exists = exists
end

Instance Method Details

#_read_hash ⇒ Object 



86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 86

def _read_hash
  begin
    # Minimize the value (get rid of defaults) so the results don't look terrible
    minimize_value(root.get_json(api_path))
  rescue Timeout::Error => e
    raise Chef::ChefFS::FileSystem::OperationFailedError.new(:read, self, e), "Timeout reading: #{e}"
  rescue Net::HTTPServerException => 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
end

#api_child_name ⇒ Object 



38
39
40
41
42
43
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 38

def api_child_name
  if name.length < 5 || name[-5,5] != ".json"
    raise "Invalid name #{path}: must end in .json"
  end
  name[0,name.length-5]
end

#api_path ⇒ Object 



45
46
47
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 45

def api_path
  "#{parent.api_path}/#{api_child_name}"
end

#chef_object ⇒ Object 



101
102
103
104
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 101

def chef_object
  # REST will inflate the Chef object using json_class
  data_handler.json_class.json_create(read)
end

#compare_to(other) ⇒ Object 



110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 110

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_hash
  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 = JSON.parse(other_value_json, :create_additions => false)
  rescue JSON::ParserError => 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)

  [ value == other_value, value_json, other_value_json ]
end

#data_handler ⇒ Object 



34
35
36
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 34

def data_handler
  parent.data_handler
end

#delete(recurse) ⇒ Object 



68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 68

def delete(recurse)
  begin
    rest.delete(api_path)
  rescue Timeout::Error => e
    raise Chef::ChefFS::FileSystem::OperationFailedError.new(:delete, self, e), "Timeout deleting: #{e}"
  rescue Net::HTTPServerException => 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
end

#environment ⇒ Object 



53
54
55
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 53

def environment
  parent.environment
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


57
58
59
60
61
62
63
64
65
66
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 57

def exists?
  if @exists.nil?
    begin
      @exists = parent.children.any? { |child| child.name == name }
    rescue Chef::ChefFS::FileSystem::NotFoundError
      @exists = false
    end
  end
  @exists
end

#minimize_value(value) ⇒ Object 



106
107
108
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 106

def minimize_value(value)
  data_handler.minimize(data_handler.normalize(value, self), self)
end

#org ⇒ Object 



49
50
51
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 49

def org
  parent.org
end

#read ⇒ Object 



82
83
84
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 82

def read
  Chef::JSONCompat.to_json_pretty(_read_hash)
end

#rest ⇒ Object 



142
143
144
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 142

def rest
  parent.rest
end

#write(file_contents) ⇒ Object 



146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
 
# File 'lib/chef/chef_fs/file_system/rest_list_entry.rb', line 146

def write(file_contents)
  begin
    object = JSON.parse(file_contents, :create_additions => false)
  rescue JSON::ParserError => 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), "#{error}"
    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::HTTPServerException => 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