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httparty/lib/httparty.rb
2011-04-15 18:30:39 -04:00

457 lines
14 KiB
Ruby

require 'pathname'
require 'net/http'
require 'net/https'
require 'uri'
require 'zlib'
require 'crack'
require 'httparty/module_inheritable_attributes'
require 'httparty/cookie_hash'
require 'httparty/net_digest_auth'
# @see HTTParty::ClassMethods
module HTTParty
VERSION = "0.7.5".freeze
CRACK_DEPENDENCY = "0.1.8".freeze
module AllowedFormatsDeprecation
def const_missing(const)
if const.to_s =~ /AllowedFormats$/
Kernel.warn("Deprecated: Use HTTParty::Parser::SupportedFormats")
HTTParty::Parser::SupportedFormats
else
super
end
end
end
extend AllowedFormatsDeprecation
def self.included(base)
base.extend ClassMethods
base.send :include, HTTParty::ModuleInheritableAttributes
base.send(:mattr_inheritable, :default_options)
base.send(:mattr_inheritable, :default_cookies)
base.instance_variable_set("@default_options", {})
base.instance_variable_set("@default_cookies", CookieHash.new)
end
# == Common Request Options
# Request methods (get, post, put, delete, head, options) all take a common set of options. These are:
#
# [:+body+:] Body of the request. If passed a Hash, will try to normalize it first, by default passing it to ActiveSupport::to_params. Any other kind of object will get used as-is.
# [:+http_proxyaddr+:] Address of proxy server to use.
# [:+http_proxyport+:] Port of proxy server to use.
# [:+limit+:] Maximum number of redirects to follow. Takes precedences over :+no_follow+.
# [:+query+:] Query string, or a Hash representing it. Normalized according to the same rules as :+body+. If you specify this on a POST, you must use a Hash. See also HTTParty::ClassMethods.default_params.
# [:+timeout+:] Timeout for opening connection and reading data.
#
# There are also another set of options with names corresponding to various class methods. The methods in question are those that let you set a class-wide default, and the options override the defaults on a request-by-request basis. Those options are:
# * :+base_uri+: see HTTParty::ClassMethods.base_uri.
# * :+basic_auth+: see HTTParty::ClassMethods.basic_auth. Only one of :+basic_auth+ and :+digest_auth+ can be used at a time; if you try using both, you'll get an ArgumentError.
# * :+debug_output+: see HTTParty::ClassMethods.debug_output.
# * :+digest_auth+: see HTTParty::ClassMethods.digest_auth. Only one of :+basic_auth+ and :+digest_auth+ can be used at a time; if you try using both, you'll get an ArgumentError.
# * :+format+: see HTTParty::ClassMethods.format.
# * :+headers+: see HTTParty::ClassMethods.headers. Must be a Hash.
# * :+maintain_method_across_redirects+: see HTTParty::ClassMethods.maintain_method_across_redirects.
# * :+no_follow+: see HTTParty::ClassMethods.no_follow.
# * :+parser+: see HTTParty::ClassMethods.parser.
# * :+pem+: see HTTParty::ClassMethods.pem.
# * :+query_string_normalizer+: see HTTParty::ClassMethods.query_string_normalizer
# * :+ssl_ca_file+: see HTTParty::ClassMethods.ssl_ca_file.
module ClassMethods
extend AllowedFormatsDeprecation
# Allows setting http proxy information to be used
#
# class Foo
# include HTTParty
# http_proxy 'http://foo.com', 80
# end
def http_proxy(addr=nil, port = nil)
default_options[:http_proxyaddr] = addr
default_options[:http_proxyport] = port
end
# Allows setting a base uri to be used for each request.
# Will normalize uri to include http, etc.
#
# class Foo
# include HTTParty
# base_uri 'twitter.com'
# end
def base_uri(uri=nil)
return default_options[:base_uri] unless uri
default_options[:base_uri] = HTTParty.normalize_base_uri(uri)
end
# Allows setting basic authentication username and password.
#
# class Foo
# include HTTParty
# basic_auth 'username', 'password'
# end
def basic_auth(u, p)
default_options[:basic_auth] = {:username => u, :password => p}
end
# Allows setting digest authentication username and password.
#
# class Foo
# include HTTParty
# digest_auth 'username', 'password'
# end
def digest_auth(u, p)
default_options[:digest_auth] = {:username => u, :password => p}
end
# Do not send rails style query strings.
# Specically, don't use bracket notation when sending an array
#
# For a query:
# get '/', :query => {:selected_ids => [1,2,3]}
#
# The default query string looks like this:
# /?selected_ids[]=1&selected_ids[]=2&selected_ids[]=3
#
# Call `disable_rails_query_string_format` to transform the query string
# into:
# /?selected_ids=1&selected_ids=2&selected_ids=3
#
# @example
# class Foo
# include HTTParty
# disable_rails_query_string_format
# end
def disable_rails_query_string_format
query_string_normalizer Request::NON_RAILS_QUERY_STRING_NORMALIZER
end
# Allows setting default parameters to be appended to each request.
# Great for api keys and such.
#
# class Foo
# include HTTParty
# default_params :api_key => 'secret', :another => 'foo'
# end
def default_params(h={})
raise ArgumentError, 'Default params must be a hash' unless h.is_a?(Hash)
default_options[:default_params] ||= {}
default_options[:default_params].merge!(h)
end
# Allows setting a default timeout for all HTTP calls
# Timeout is specified in seconds.
#
# class Foo
# include HTTParty
# default_timeout 10
# end
def default_timeout(t)
raise ArgumentError, 'Timeout must be an integer' unless t && t.is_a?(Integer)
default_options[:timeout] = t
end
# Set an output stream for debugging, defaults to $stderr.
# The output stream is passed on to Net::HTTP#set_debug_output.
#
# class Foo
# include HTTParty
# debug_output $stderr
# end
def debug_output(stream = $stderr)
default_options[:debug_output] = stream
end
# Allows setting HTTP headers to be used for each request.
#
# class Foo
# include HTTParty
# headers 'Accept' => 'text/html'
# end
def headers(h={})
raise ArgumentError, 'Headers must be a hash' unless h.is_a?(Hash)
default_options[:headers] ||= {}
default_options[:headers].merge!(h)
end
def cookies(h={})
raise ArgumentError, 'Cookies must be a hash' unless h.is_a?(Hash)
default_cookies.add_cookies(h)
end
# Proceed to the location header when an HTTP response dictates a redirect.
# Redirects are always followed by default.
#
# @example
# class Foo
# include HTTParty
# base_uri 'http://google.com'
# follow_redirects true
# end
def follow_redirects(value = true)
default_options[:follow_redirects] = value
end
# Allows setting the format with which to parse.
# Must be one of the allowed formats ie: json, xml
#
# class Foo
# include HTTParty
# format :json
# end
def format(f = nil)
if f.nil?
default_options[:format]
else
parser(Parser) if parser.nil?
default_options[:format] = f
validate_format
end
end
# Declare whether or not to follow redirects. When true, an
# {HTTParty::RedirectionTooDeep} error will raise upon encountering a
# redirect. You can then gain access to the response object via
# HTTParty::RedirectionTooDeep#response.
#
# @see HTTParty::ResponseError#response
#
# @example
# class Foo
# include HTTParty
# base_uri 'http://google.com'
# no_follow true
# end
#
# begin
# Foo.get('/')
# rescue HTTParty::RedirectionTooDeep => e
# puts e.response.body
# end
def no_follow(value = false)
default_options[:no_follow] = value
end
# Declare that you wish to maintain the chosen HTTP method across redirects.
# The default behavior is to follow redirects via the GET method.
# If you wish to maintain the original method, you can set this option to true.
#
# @example
# class Foo
# include HTTParty
# base_uri 'http://google.com'
# maintain_method_across_redirects true
# end
def maintain_method_across_redirects(value = true)
default_options[:maintain_method_across_redirects] = value
end
# Allows setting a PEM file to be used
#
# class Foo
# include HTTParty
# pem File.read('/home/user/my.pem'), "optional password"
# end
def pem(pem_contents, password=nil)
default_options[:pem] = pem_contents
default_options[:pem_password] = password
end
# Override the way query strings are normalized.
# Helpful for overriding the default rails normalization of Array queries.
#
# For a query:
# get '/', :query => {:selected_ids => [1,2,3]}
#
# The default query string normalizer returns:
# /?selected_ids[]=1&selected_ids[]=2&selected_ids[]=3
#
# Let's change it to this:
# /?selected_ids=1&selected_ids=2&selected_ids=3
#
# Pass a Proc to the query normalizer which accepts the yielded query.
#
# @example Modifying Array query strings
# class ServiceWrapper
# include HTTParty
#
# query_string_normalizer proc { |query|
# query.map do |key, value|
# value.map {|v| "#{key}=#{v}"}
# end.join('&')
# }
# end
#
# @param [Proc] normalizer custom query string normalizer.
# @yield [Hash, String] query string
# @yieldreturn [Array] an array that will later be joined with '&'
def query_string_normalizer(normalizer)
default_options[:query_string_normalizer] = normalizer
end
# Allows setting an OpenSSL certificate authority file
#
# class Foo
# include HTTParty
# ssl_ca_file '/etc/ssl/certs/ca-certificates.crt'
# end
def ssl_ca_file(path)
default_options[:ssl_ca_file] = path
end
# Allows setting an OpenSSL certificate authority path (directory)
#
# class Foo
# include HTTParty
# ssl_ca_path '/etc/ssl/certs/'
# end
def ssl_ca_path(path)
default_options[:ssl_ca_path] = path
end
# Allows setting a custom parser for the response.
#
# class Foo
# include HTTParty
# parser Proc.new {|data| ...}
# end
def parser(custom_parser = nil)
if custom_parser.nil?
default_options[:parser]
else
default_options[:parser] = custom_parser
validate_format
end
end
# Allows making a get request to a url.
#
# class Foo
# include HTTParty
# end
#
# # Simple get with full url
# Foo.get('http://foo.com/resource.json')
#
# # Simple get with full url and query parameters
# # ie: http://foo.com/resource.json?limit=10
# Foo.get('http://foo.com/resource.json', :query => {:limit => 10})
def get(path, options={})
perform_request Net::HTTP::Get, path, options
end
# Allows making a post request to a url.
#
# class Foo
# include HTTParty
# end
#
# # Simple post with full url and setting the body
# Foo.post('http://foo.com/resources', :body => {:bar => 'baz'})
#
# # Simple post with full url using :query option,
# # which gets set as form data on the request.
# Foo.post('http://foo.com/resources', :query => {:bar => 'baz'})
def post(path, options={})
perform_request Net::HTTP::Post, path, options
end
# Perform a PUT request to a path
def put(path, options={})
perform_request Net::HTTP::Put, path, options
end
# Perform a DELETE request to a path
def delete(path, options={})
perform_request Net::HTTP::Delete, path, options
end
# Perform a HEAD request to a path
def head(path, options={})
perform_request Net::HTTP::Head, path, options
end
# Perform an OPTIONS request to a path
def options(path, options={})
perform_request Net::HTTP::Options, path, options
end
def default_options #:nodoc:
@default_options
end
private
def perform_request(http_method, path, options) #:nodoc:
options = default_options.dup.merge(options)
process_cookies(options)
Request.new(http_method, path, options).perform
end
def process_cookies(options) #:nodoc:
return unless options[:cookies] || default_cookies.any?
options[:headers] ||= headers.dup
options[:headers]["cookie"] = cookies.merge(options.delete(:cookies) || {}).to_cookie_string
end
def validate_format
if format && parser.respond_to?(:supports_format?) && !parser.supports_format?(format)
raise UnsupportedFormat, "'#{format.inspect}' Must be one of: #{parser.supported_formats.map{|f| f.to_s}.sort.join(', ')}"
end
end
end
def self.normalize_base_uri(url) #:nodoc:
normalized_url = url.dup
use_ssl = (normalized_url =~ /^https/) || normalized_url.include?(':443')
ends_with_slash = normalized_url =~ /\/$/
normalized_url.chop! if ends_with_slash
normalized_url.gsub!(/^https?:\/\//i, '')
"http#{'s' if use_ssl}://#{normalized_url}"
end
class Basement #:nodoc:
include HTTParty
end
def self.get(*args)
Basement.get(*args)
end
def self.post(*args)
Basement.post(*args)
end
def self.put(*args)
Basement.put(*args)
end
def self.delete(*args)
Basement.delete(*args)
end
def self.head(*args)
Basement.head(*args)
end
def self.options(*args)
Basement.options(*args)
end
end
require 'httparty/core_extensions'
require 'httparty/exceptions'
require 'httparty/parser'
require 'httparty/request'
require 'httparty/response'
if Crack::VERSION != HTTParty::CRACK_DEPENDENCY
warn "warning: HTTParty depends on version #{HTTParty::CRACK_DEPENDENCY} of crack, not #{Crack::VERSION}."
end