Class: Kronk::Request
- Inherits:
-
Object
- Object
- Kronk::Request
- Defined in:
- lib/kronk/request.rb
Overview
Performs HTTP requests and returns a Kronk::Response instance.
Defined Under Namespace
Classes: ParseError, VanillaRequest
Constant Summary collapse
- REQUEST_LINE_MATCHER =
Matches the first line of an http request string or a fully qualified URL.
%r{(?:^|[\s'"])(?:([a-z]+)\s)?(?:(https?://[^/]+)(/[^\s'";]*)?|(/[^\s'";]*))}i
Class Attribute Summary collapse
-
.multipart_boundary ⇒ Object
The boundary to use for multipart requests; default: AaB03x.
Instance Attribute Summary collapse
-
#body ⇒ Object
Returns the value of attribute body.
-
#headers ⇒ Object
Returns the value of attribute headers.
-
#http_method ⇒ Object
Returns the value of attribute http_method.
-
#proxy ⇒ Object
Returns the value of attribute proxy.
-
#response ⇒ Object
Returns the value of attribute response.
-
#timeout ⇒ Object
Returns the value of attribute timeout.
-
#uri ⇒ Object
readonly
Returns the value of attribute uri.
-
#use_cookies ⇒ Object
Returns the value of attribute use_cookies.
Class Method Summary collapse
-
.build_query(data, param = nil, &block) ⇒ Object
Creates a query string from data.
-
.build_uri(uri, opts = {}) ⇒ Object
Build the URI to use for the request from the given uri or path and options.
-
.normalize_params(params, name, v = nil) ⇒ Object
Stolen from Rack.
-
.parse(str, opts = {}) ⇒ Object
Parses a raw HTTP request-like string into a Kronk::Request instance.
-
.parse_nested_query(qs, d = nil) ⇒ Object
Parses a nested query.
-
.parse_to_hash(str, opts = {}) ⇒ Object
Parses a raw HTTP request-like string into a Kronk::Request options hash.
Instance Method Summary collapse
-
#auth ⇒ Object
Returns the basic auth credentials if available.
-
#connection ⇒ Object
Retrieve or create an HTTP connection instance.
-
#cookie=(cookie_str) ⇒ Object
Assigns the cookie string.
-
#form_data=(data) ⇒ Object
Assigns body of the request with form headers.
-
#http_request ⇒ Object
Returns the Net::HTTPRequest subclass instance.
-
#initialize(uri, opts = {}) ⇒ Request
constructor
Build an http request to the given uri and return a Response instance.
-
#inspect ⇒ Object
Ruby inspect.
-
#oauth ⇒ Object
Returns the oauth credentials if available.
-
#retrieve(opts = {}, &block) ⇒ Object
Retrieve this requests’ response.
-
#ssl=(bool) ⇒ Object
Assign whether to use ssl or not.
-
#ssl? ⇒ Boolean
Check if this is an SSL request.
-
#stream(opts = {}, &block) ⇒ Object
Retrieve this requests’ response but only reads HTTP headers before returning and leaves the connection open.
-
#to_hash ⇒ Object
Returns this Request instance as an options hash.
-
#to_s ⇒ Object
Returns the raw HTTP request String.
-
#user_agent ⇒ Object
Read the User Agent header.
-
#user_agent=(new_ua) ⇒ Object
Assign a User Agent header.
Constructor Details
#initialize(uri, opts = {}) ⇒ Request
Build an http request to the given uri and return a Response instance. Supports the following options:
- :data
-
Hash/String - the data to pass to the http request body
- :file
-
String - the path to a file to upload; overrides :data
- :form
-
Hash/String - similar to :data but sets content-type header
- :query
-
Hash/String - the data to append to the http request path
- :user_agent
-
String - user agent string or alias; defaults to ‘kronk’
- :auth
-
Hash - must contain :username and :password; defaults to nil
- :oauth
-
Hash - :consumer_key, :token, :consumer_secret, :token_secret
- :headers
-
Hash - extra headers to pass to the request
- :http_method
-
Symbol - the http method to use; defaults to :get
- :proxy
-
Hash/String - http proxy to use; defaults to {}
- :accept_encoding
-
Array/String - list of encodings the server can return
Note: if no http method is specified and data is given, will default to using a post request.
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# File 'lib/kronk/request.rb', line 237 def initialize uri, opts={} @auth = opts[:auth] @oauth = opts[:oauth] @connection = nil @response = nil @body = nil @headers = opts[:headers] || {} @headers["Accept-Encoding"] = [ @headers["Accept-Encoding"].to_s.split(","), Array(opts[:accept_encoding]) ].flatten.compact.uniq.join(",") @headers.delete "Accept-Encoding" if @headers["Accept-Encoding"].empty? @headers['Connection'] ||= 'Keep-Alive' @timeout = opts[:timeout] || Kronk.config[:timeout] @uri = self.class.build_uri uri, opts self.proxy = opts[:proxy] if opts[:file] self.body = opts[:file].respond_to?(:read) ? opts[:file] : File.open(opts[:file], 'rb') elsif opts[:form_upload] self.body = build_multipart opts elsif opts[:form] self.form_data = opts[:form] elsif opts[:data] self.body = opts[:data] end self.user_agent ||= opts[:user_agent] self.http_method = opts[:http_method] || (@body ? "POST" : "GET") self. = opts.has_key?(:no_cookies) ? !opts[:no_cookies] : Kronk.config[:use_cookies] end |
Class Attribute Details
.multipart_boundary ⇒ Object
The boundary to use for multipart requests; default: AaB03x
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# File 'lib/kronk/request.rb', line 199 def multipart_boundary @multipart_boundary end |
Instance Attribute Details
#body ⇒ Object
Returns the value of attribute body.
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# File 'lib/kronk/request.rb', line 217 def body @body end |
#headers ⇒ Object
Returns the value of attribute headers.
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# File 'lib/kronk/request.rb', line 215 def headers @headers end |
#http_method ⇒ Object
Returns the value of attribute http_method.
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# File 'lib/kronk/request.rb', line 217 def http_method @http_method end |
#proxy ⇒ Object
Returns the value of attribute proxy.
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# File 'lib/kronk/request.rb', line 217 def proxy @proxy end |
#response ⇒ Object
Returns the value of attribute response.
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# File 'lib/kronk/request.rb', line 215 def response @response end |
#timeout ⇒ Object
Returns the value of attribute timeout.
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# File 'lib/kronk/request.rb', line 215 def timeout @timeout end |
#uri ⇒ Object (readonly)
Returns the value of attribute uri.
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# File 'lib/kronk/request.rb', line 217 def uri @uri end |
#use_cookies ⇒ Object
Returns the value of attribute use_cookies.
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# File 'lib/kronk/request.rb', line 217 def @use_cookies end |
Class Method Details
.build_query(data, param = nil, &block) ⇒ Object
Creates a query string from data.
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# File 'lib/kronk/request.rb', line 20 def self.build_query data, param=nil, &block return data.to_s unless param || Hash === data case data when Array out = data.map do |value| key = "#{param}[]" build_query value, key, &block end out.join "&" when Hash out = data.map do |key, value| key = param.nil? ? key : "#{param}[#{key}]" build_query value, key, &block end out.join "&" else yield param.to_s, data if block_given? "#{param}=#{data}" end end |
.build_uri(uri, opts = {}) ⇒ Object
Build the URI to use for the request from the given uri or path and options.
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# File 'lib/kronk/request.rb', line 51 def self.build_uri uri, opts={} uri ||= opts[:host] uri = "#{uri}#{opts[:path]}#{opts[:uri_suffix]}" uri = "http://#{uri}" unless uri.to_s =~ %r{^(\w+://|/)} uri = URI.parse uri unless URI === uri unless uri.host host = Kronk.config[:default_host] host = "http://#{host}" unless host.to_s =~ %r{^\w+://} uri = URI.parse(host) + uri end if opts[:query] query = build_query opts[:query] uri.query = [uri.query, query].compact.join "&" end uri.path = "/" if uri.path.empty? uri end |
.normalize_params(params, name, v = nil) ⇒ Object
Stolen from Rack.
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# File 'lib/kronk/request.rb', line 153 def self.normalize_params params, name, v=nil name =~ %r(\A[\[\]]*([^\[\]]+)\]*) k = $1 || '' after = $' || '' return if k.empty? if after == "" params[k] = v elsif after == "[]" params[k] ||= [] raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array) params[k] << v elsif after =~ %r(^\[\]\[([^\[\]]+)\]$) || after =~ %r(^\[\](.+)$) child_key = $1 params[k] ||= [] raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array) if params[k].last.is_a?(Hash) && !params[k].last.key?(child_key) normalize_params(params[k].last, child_key, v) else params[k] << normalize_params({}, child_key, v) end else params[k] ||= {} raise TypeError, "expected Hash (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Hash) params[k] = normalize_params(params[k], after, v) end return params end |
.parse(str, opts = {}) ⇒ Object
Parses a raw HTTP request-like string into a Kronk::Request instance. Options passed are used as default values for Request#new.
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# File 'lib/kronk/request.rb', line 80 def self.parse str, opts={} opts = parse_to_hash str, opts raise ParseError unless opts new opts.delete(:host), opts end |
.parse_nested_query(qs, d = nil) ⇒ Object
Parses a nested query. Stolen from Rack.
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# File 'lib/kronk/request.rb', line 137 def self.parse_nested_query qs, d=nil params = {} d ||= "&;" (qs || '').split(%r{[#{d}] *}n).each do |p| k, v = CGI.unescape(p).split('=', 2) normalize_params(params, k, v) end params end |
.parse_to_hash(str, opts = {}) ⇒ Object
Parses a raw HTTP request-like string into a Kronk::Request options hash. Also parses most single access log entries. Options passed are used as default values for Request#new.
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# File 'lib/kronk/request.rb', line 93 def self.parse_to_hash str, opts={} lines = str.split("\n") return if lines.empty? body_start = nil opts[:headers] ||= {} lines.shift.strip =~ REQUEST_LINE_MATCHER opts.merge! :http_method => $1, :host => $2, :path => ($3 || $4) lines.each_with_index do |line, i| case line when /^Host: / opts[:host] = line.split(": ", 2)[1].strip when "", "\r" body_start = i+1 break else name, value = line.split(": ", 2) opts[:headers][name] = value.strip if value end end opts[:data] = lines[body_start..-1].join("\n") if body_start opts.delete(:host) if !opts[:host] opts.delete(:path) if !opts[:path] opts.delete(:headers) if opts[:headers].empty? opts.delete(:http_method) if !opts[:http_method] opts.delete(:data) if opts[:data] && opts[:data].strip.empty? return if opts.empty? opts end |
Instance Method Details
#auth ⇒ Object
Returns the basic auth credentials if available.
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# File 'lib/kronk/request.rb', line 287 def auth if (!@auth || !@auth[:username]) && @headers['Authorization'] && @headers['Authorization'] !~ /^OAuth\s/ str = Base64.decode64 @headers['Authorization'].split[1] username, password = str.split(":", 2) @auth = { :username => username, :password => password }.merge(@auth || {}) end @auth end |
#connection ⇒ Object
Retrieve or create an HTTP connection instance.
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# File 'lib/kronk/request.rb', line 353 def connection conn = Kronk::HTTP.new @uri.host, @uri.port, :proxy => self.proxy, :ssl => !!(@uri.scheme =~ /^https$/) conn.open_timeout = conn.read_timeout = @timeout if @timeout conn end |
#cookie=(cookie_str) ⇒ Object
Assigns the cookie string.
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# File 'lib/kronk/request.rb', line 367 def @headers['Cookie'] = if @use_cookies end |
#form_data=(data) ⇒ Object
Assigns body of the request with form headers.
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# File 'lib/kronk/request.rb', line 375 def form_data= data @headers['Content-Type'] = "application/x-www-form-urlencoded" @body = self.class.build_query data end |
#http_request ⇒ Object
Returns the Net::HTTPRequest subclass instance.
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# File 'lib/kronk/request.rb', line 570 def http_request req = VanillaRequest.new @http_method, @uri.request_uri, @headers if @oauth req['Authorization'] = SimpleOAuth::Header.new(@http_method, @uri, {}, self.oauth).to_s elsif @auth && @auth[:username] req.basic_auth @auth[:username], @auth[:password] end # Stream Multipart if Kronk::Multipart === @body req.body_stream = @body.to_io # Stream IO elsif @body.respond_to?(:read) req.body_stream = @body else req.body = @body end b = req.body || req.body_stream if b.respond_to?(:bytesize) req['Content-Length'] = b.bytesize.to_s elsif b.respond_to?(:size) && b.size req['Content-Length'] = b.size.to_s elsif b.nil? req['Content-Length'] = "0" end req['Transfer-Encoding'] = 'chunked' if !req['Content-Length'] req end |
#inspect ⇒ Object
Ruby inspect.
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# File 'lib/kronk/request.rb', line 562 def inspect "#<#{self.class}:#{self.http_method} #{self.uri}>" end |
#oauth ⇒ Object
Returns the oauth credentials if available.
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# File 'lib/kronk/request.rb', line 306 def oauth if (!@oauth || !@oauth[:token] || !@oauth[:consumer_key]) && @headers['Authorization'].to_s =~ /^OAuth\s/ @oauth = SimpleOAuth::Header.parse(@headers['Authorization']). merge(@oauth || {}) end @oauth end |
#retrieve(opts = {}, &block) ⇒ Object
Retrieve this requests’ response. Returns a Kronk::Response once the full HTTP response has been read. If a block is given, will yield the response and body chunks as they get received.
Note: Block will yield the full body if the response is compressed using Deflate as the Deflate format does not support streaming.
Options are passed directly to the Kronk::Response constructor.
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# File 'lib/kronk/request.rb', line 466 def retrieve opts={}, &block start_time = Time.now @response = stream opts, &block @response.body # make sure to read the full body from io @response.time = Time.now - start_time - @response.conn_time @response end |
#ssl=(bool) ⇒ Object
Assign whether to use ssl or not.
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# File 'lib/kronk/request.rb', line 451 def ssl= bool @uri.scheme = bool ? "https" : "http" end |
#ssl? ⇒ Boolean
Check if this is an SSL request.
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# File 'lib/kronk/request.rb', line 443 def ssl? @uri.scheme == "https" end |
#stream(opts = {}, &block) ⇒ Object
Retrieve this requests’ response but only reads HTTP headers before returning and leaves the connection open.
Options are passed directly to the Kronk::Response constructor.
Connection must be closed using:
request.connection.finish
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# File 'lib/kronk/request.rb', line 487 def stream opts={}, &block retried = false opts = opts.merge(:request => self) begin start_time = Time.now conn = connection conn.start unless conn.started? conn_time = Time.now - start_time @response = conn.request http_request, nil, opts, &block @response.conn_time = conn_time @response rescue EOFError, Errno::EPIPE raise if retried @connection = nil retried = true retry end end |
#to_hash ⇒ Object
Returns this Request instance as an options hash.
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# File 'lib/kronk/request.rb', line 514 def to_hash hash = { :host => "#{@uri.scheme}://#{@uri.host}:#{@uri.port}", :path => @uri.request_uri, :user_agent => self.user_agent, :timeout => @timeout, :http_method => self.http_method, :no_cookies => !self. } hash[:auth] = @auth if @auth hash[:oauth] = @oauth if @oauth hash[:data] = @body if @body hash[:headers] = @headers unless @headers.empty? hash[:proxy] = self.proxy unless self.proxy.empty? hash end |
#to_s ⇒ Object
Returns the raw HTTP request String. Warning: If the body is an IO instance or a Multipart instance, the full input will be read.
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# File 'lib/kronk/request.rb', line 539 def to_s out = "#{@http_method} #{@uri.request_uri} HTTP/1.1\r\n" out << "Host: #{@uri.host}:#{@uri.port}\r\n" http_request.each do |name, value| out << "#{name}: #{value}\r\n" unless name =~ /host/i end out << "\r\n" if @body.respond_to?(:read) out << @body.read elsif Kronk::Multipart === @body out << @body.to_io.read else out << @body.to_s end end |
#user_agent ⇒ Object
Read the User Agent header.
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# File 'lib/kronk/request.rb', line 435 def user_agent @headers['User-Agent'] end |
#user_agent=(new_ua) ⇒ Object
Assign a User Agent header.
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# File 'lib/kronk/request.rb', line 425 def user_agent= new_ua @headers['User-Agent'] = new_ua && Kronk.config[:user_agents][new_ua.to_s] || new_ua || Kronk::DEFAULT_USER_AGENT end |