Class: Chef::HTTP

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/http.rb,
lib/chef/rest.rb,
lib/chef/http/simple.rb,
lib/chef/http/cookie_jar.rb,
lib/chef/http/json_input.rb,
lib/chef/http/json_output.rb,
lib/chef/http/basic_client.rb,
lib/chef/http/decompressor.rb,
lib/chef/http/http_request.rb,
lib/chef/http/ssl_policies.rb,
lib/chef/http/authenticator.rb,
lib/chef/http/cookie_manager.rb,
lib/chef/http/auth_credentials.rb,
lib/chef/http/remote_request_id.rb,
lib/chef/http/json_to_model_output.rb,
lib/chef/http/validate_content_length.rb

Overview

Chef::HTTP

Basic HTTP client, with support for adding features via middleware

Direct Known Subclasses

Simple, Knife::Raw::RawInputServerAPI, REST, ServerAPI

Defined Under Namespace

Classes: APISSLPolicy, AuthCredentials, Authenticator, BasicClient, CookieJar, CookieManager, Decompressor, DefaultSSLPolicy, HTTPRequest, JSONInput, JSONOutput, JSONToModelOutput, RemoteRequestID, Simple, StreamHandler, ValidateContentLength

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url, options = {}) ⇒ HTTP

Create a HTTP 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 with ‘nodes’ will make an HTTP GET request to localhost:4000/nodes



83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/chef/http.rb', line 83

def initialize(url, options={})
  @url = url
  @default_headers = options[:headers] || {}
  @sign_on_redirect = true
  @redirects_followed = 0
  @redirect_limit = 10

  @middlewares = []
  self.class.middlewares.each do |middleware_class|
    @middlewares << middleware_class.new(options)
  end
end

Instance Attribute Details

#middlewares ⇒ Object (readonly)

Returns the value of attribute middlewares.



77
78
79
 
# File 'lib/chef/http.rb', line 77

def middlewares
  @middlewares
end

#redirect_limit ⇒ Object (readonly)

Returns the value of attribute redirect_limit.



75
76
77
 
# File 'lib/chef/http.rb', line 75

def redirect_limit
  @redirect_limit
end

#sign_on_redirect ⇒ Object (readonly)

Returns the value of attribute sign_on_redirect.



74
75
76
 
# File 'lib/chef/http.rb', line 74

def sign_on_redirect
  @sign_on_redirect
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



73
74
75
 
# File 'lib/chef/http.rb', line 73

def url
  @url
end

Class Method Details

.middlewares ⇒ Object 



65
66
67
 
# File 'lib/chef/http.rb', line 65

def self.middlewares
  @middlewares ||= []
end

.use(middleware_class) ⇒ Object 



69
70
71
 
# File 'lib/chef/http.rb', line 69

def self.use(middleware_class)
  middlewares << middleware_class
end

Instance Method Details

#delete(path, headers = {}) ⇒ Object

Send an HTTP DELETE request to the path

Parameters

path

path part of the request URL



132
133
134
 
# File 'lib/chef/http.rb', line 132

def delete(path, headers={})
  request(:DELETE, path, headers)
end

#get(path, headers = {}) ⇒ Object

Send an HTTP GET request to the path

Parameters

path

The path to GET



108
109
110
 
# File 'lib/chef/http.rb', line 108

def get(path, headers={})
  request(:GET, path, headers)
end

#head(path, headers = {}) ⇒ Object

Send an HTTP HEAD request to the path

Parameters

path

path part of the request URL



100
101
102
 
# File 'lib/chef/http.rb', line 100

def head(path, headers={})
  request(:HEAD, path, headers)
end

#http_client(base_url = nil) ⇒ Object 



197
198
199
200
 
# File 'lib/chef/http.rb', line 197

def http_client(base_url=nil)
  base_url ||= url
  BasicClient.new(base_url)
end

#last_response ⇒ Object

This is only kept around to provide access to cache control data in lib/chef/provider/remote_file/http.rb Find a better API.



399
400
401
 
# File 'lib/chef/http.rb', line 399

def last_response
  @last_response
end

#post(path, json, headers = {}) ⇒ Object

Send an HTTP POST request to the path

Parameters

path

path part of the request URL



124
125
126
 
# File 'lib/chef/http.rb', line 124

def post(path, json, headers={})
  request(:POST, path, headers, json)
end

#put(path, json, headers = {}) ⇒ Object

Send an HTTP PUT request to the path

Parameters

path

path part of the request URL



116
117
118
 
# File 'lib/chef/http.rb', line 116

def put(path, json, headers={})
  request(:PUT, path, headers, json)
end

#request(method, path, headers = {}, data = false) ⇒ Object

Makes an HTTP request to path with the given method, headers, and data (if applicable).



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/chef/http.rb', line 138

def request(method, path, headers={}, data=false)
  url = create_url(path)
  method, url, headers, data = apply_request_middleware(method, url, headers, data)

  response, rest_request, return_value = send_http_request(method, url, headers, data)
  response, rest_request, return_value = apply_response_middleware(response, rest_request, return_value)
  response.error! unless success_response?(response)
  return_value
rescue Exception => exception
  log_failed_request(response, return_value) unless response.nil?

  if exception.respond_to?(:chef_rest_request=)
    exception.chef_rest_request = rest_request
  end
  raise
end

#streaming_request(path, headers = {}, &block) ⇒ Object

Makes a streaming download request, streaming the response body to a tempfile. If a block is given, the tempfile is passed to the block and the tempfile will automatically be unlinked after the block is executed.

If no block is given, the tempfile is returned, which means it’s up to you to unlink the tempfile when you’re done with it.



161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
 
# File 'lib/chef/http.rb', line 161

def streaming_request(path, headers={}, &block)
  url = create_url(path)
  response, rest_request, return_value = nil, nil, nil
  tempfile = nil

  method = :GET
  method, url, headers, data = apply_request_middleware(method, url, headers, data)

  response, rest_request, return_value = send_http_request(method, url, headers, data) do |http_response|
    if http_response.kind_of?(Net::HTTPSuccess)
      tempfile = stream_to_tempfile(url, http_response)
    end
    apply_stream_complete_middleware(http_response, rest_request, return_value)
  end

  return nil if response.kind_of?(Net::HTTPRedirection)
  unless response.kind_of?(Net::HTTPSuccess)
    response.error!
  end

  if block_given?
    begin
      yield tempfile
    ensure
      tempfile && tempfile.close!
    end
  end
  tempfile
rescue Exception => e
  log_failed_request(response, return_value) unless response.nil?
  if e.respond_to?(:chef_rest_request=)
    e.chef_rest_request = rest_request
  end
  raise
end