Class: Chef::HTTP

Inherits:
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



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# File 'lib/chef/http.rb', line 84

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.



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

def middlewares
  @middlewares
end

#redirect_limit ⇒ Object (readonly)

Returns the value of attribute redirect_limit.



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

def redirect_limit
  @redirect_limit
end

#sign_on_redirect ⇒ Object (readonly)

Returns the value of attribute sign_on_redirect.



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

def sign_on_redirect
  @sign_on_redirect
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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

def url
  @url
end

Class Method Details

.middlewares ⇒ Object 



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

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

.use(middleware_class) ⇒ Object 



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

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



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

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



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

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



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

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

#http_client(base_url = nil) ⇒ Object 



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

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.



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

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



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

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



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

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).



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# File 'lib/chef/http.rb', line 139

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.



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# File 'lib/chef/http.rb', line 162

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