Class: Chef::REST

Inherits:
HTTP show all
Defined in:
lib/chef/rest.rb,
lib/chef/rest.rb

Overview

Chef::REST

Chef’s custom REST client with built-in JSON support and RSA signed header authentication.

Direct Known Subclasses

Shell::ShellREST

Constant Summary collapse

RESTRequest =

Backwards compatibility for things that use Chef::REST::RESTRequest or its constants

HTTP::HTTPRequest

Instance Attribute Summary collapse

Attributes inherited from HTTP

#middlewares

Instance Method Summary collapse

Methods inherited from HTTP

#delete, #head, #last_response, middlewares, #post, #put, #request, use

Constructor Details

#initialize(url, client_name = Chef::Config[:node_name], signing_key_filename = Chef::Config[:client_key], options = {}) ⇒ REST

Create a REST client object. The supplied url is used as the base for all subsequent requests. For example, when initialized with a base url localhost:4000, a call to get_rest with ‘nodes’ will make an HTTP GET request to localhost:4000/nodes



57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/chef/rest.rb', line 57

def initialize(url, client_name=Chef::Config[:node_name], signing_key_filename=Chef::Config[:client_key], options={})
  options[:client_name] = client_name
  options[:signing_key_filename] = signing_key_filename
  super(url, options)

  @decompressor = Decompressor.new(options)
  @authenticator = Authenticator.new(options)

  @middlewares << JSONInput.new(options)
  @middlewares << JSONToModelOutput.new(options)
  @middlewares << CookieManager.new(options)
  @middlewares << @decompressor
  @middlewares << @authenticator
end

Instance Attribute Details

#authenticator ⇒ Object (readonly)

Returns the value of attribute authenticator.



51
52
53
 
# File 'lib/chef/rest.rb', line 51

def authenticator
  @authenticator
end

#cookies ⇒ Object

Returns the value of attribute cookies.



49
50
51
 
# File 'lib/chef/rest.rb', line 49

def cookies
  @cookies
end

#redirect_limit ⇒ Object

Returns the value of attribute redirect_limit.



49
50
51
 
# File 'lib/chef/rest.rb', line 49

def redirect_limit
  @redirect_limit
end

#sign_on_redirect ⇒ Object

Returns the value of attribute sign_on_redirect.



49
50
51
 
# File 'lib/chef/rest.rb', line 49

def sign_on_redirect
  @sign_on_redirect
end

#url ⇒ Object

Returns the value of attribute url.



49
50
51
 
# File 'lib/chef/rest.rb', line 49

def url
  @url
end

Instance Method Details

#auth_credentials ⇒ Object 



76
77
78
 
# File 'lib/chef/rest.rb', line 76

def auth_credentials
  authenticator.auth_credentials
end

#authentication_headers(method, url, json_body = nil) ⇒ Object 



178
179
180
 
# File 'lib/chef/rest.rb', line 178

def authentication_headers(method, url, json_body=nil)
  authenticator.authentication_headers(method, url, json_body)
end

#client_name ⇒ Object 



80
81
82
 
# File 'lib/chef/rest.rb', line 80

def client_name
  authenticator.client_name
end

#decompress_body(body) ⇒ Object

DEPRECATED



174
175
176
 
# File 'lib/chef/rest.rb', line 174

def decompress_body(body)
  @decompressor.decompress_body(body)
end

#fetch(path, headers = {}) ⇒ Object

Streams a download to a tempfile, then yields the tempfile to a block. After the download, the tempfile will be closed and unlinked. If you rename the tempfile, it will not be deleted. Beware that if the server streams infinite content, this method will stream it until you run out of disk space.



121
122
123
 
# File 'lib/chef/rest.rb', line 121

def fetch(path, headers={})
  streaming_request(create_url(path), headers) {|tmp_file| yield tmp_file }
end

#follow_redirect ⇒ Object 



154
155
156
157
158
159
160
161
 
# File 'lib/chef/rest.rb', line 154

def follow_redirect
  unless @sign_on_redirect
    @authenticator.sign_request = false
  end
  super
ensure
  @authenticator.sign_request = true
end

#get(path, raw = false, headers = {}) ⇒ Object Also known as: get_rest

Send an HTTP GET request to the path

Using this method to fetch a file is considered deprecated.

Parameters

path

The path to GET

raw

Whether you want the raw body returned, or JSON inflated. Defaults

to JSON inflated.



100
101
102
103
104
105
106
 
# File 'lib/chef/rest.rb', line 100

def get(path, raw=false, headers={})
  if raw
    streaming_request(path, headers)
  else
    request(:GET, path, headers)
  end
end

#http_client(base_url = nil) ⇒ Object 



165
166
167
168
 
# File 'lib/chef/rest.rb', line 165

def http_client(base_url=nil)
  base_url ||= url
  BasicClient.new(base_url, :ssl_policy => Chef::HTTP::APISSLPolicy)
end

#retriable_http_request(method, url, req_body, headers) ⇒ Object Also known as: retriable_rest_request

Deprecated: Responsibilities of this method have been split up. The #http_client is now responsible for making individual requests, while #retrying_http_errors handles error/retry logic.



135
136
137
138
139
140
141
142
143
 
# File 'lib/chef/rest.rb', line 135

def retriable_http_request(method, url, req_body, headers)
  rest_request = Chef::HTTP::HTTPRequest.new(method, url, req_body, headers)

  Chef::Log.debug("Sending HTTP Request via #{method} to #{url.host}:#{url.port}#{rest_request.path}")

  retrying_http_errors(url) do
    yield rest_request
  end
end

#sign_requests? ⇒ Boolean

Returns:

  • (Boolean) 


88
89
90
 
# File 'lib/chef/rest.rb', line 88

def sign_requests?
  authenticator.sign_requests?
end

#signing_key ⇒ Object 



84
85
86
 
# File 'lib/chef/rest.rb', line 84

def signing_key
  authenticator.raw_key
end

#signing_key_filename ⇒ Object 



72
73
74
 
# File 'lib/chef/rest.rb', line 72

def signing_key_filename
  authenticator.signing_key_filename
end

#streaming_request(url, headers, &block) ⇒ Object

Customized streaming behavior; sets the accepted content type to “/” if not otherwise specified for compatibility purposes



147
148
149
150
 
# File 'lib/chef/rest.rb', line 147

def streaming_request(url, headers, &block)
  headers["Accept"] ||= "*/*"
  super
end