Module: Excon

Defined in:
lib/excon.rb,
lib/excon.rb,
lib/excon/utils.rb,
lib/excon/errors.rb,
lib/excon/socket.rb,
lib/excon/response.rb,
lib/excon/constants.rb,
lib/excon/connection.rb,
lib/excon/ssl_socket.rb,
lib/excon/unix_socket.rb,
lib/excon/middlewares/base.rb,
lib/excon/middlewares/mock.rb,
lib/excon/middlewares/expects.rb,
lib/excon/standard_instrumentor.rb,
lib/excon/middlewares/decompress.rb,
lib/excon/middlewares/idempotent.rb,
lib/excon/middlewares/instrumentor.rb,
lib/excon/middlewares/response_parser.rb,
lib/excon/middlewares/redirect_follower.rb

Overview

Define defaults first so they will be available to other files

Defined Under Namespace

Modules: Errors, Middleware, Utils Classes: Connection, Response, SSLSocket, Socket, StandardInstrumentor, UnixSocket

Constant Summary collapse

VERSION = 
'0.30.0'
CR_NL = 
"\r\n"
DEFAULT_CA_FILE = 
File.expand_path(File.join(File.dirname(__FILE__), "..", "..", "data", "cacert.pem"))
DEFAULT_CHUNK_SIZE =

1 megabyte

1048576
CHUNK_SIZE = 
DEFAULT_CHUNK_SIZE
DEFAULT_RETRY_LIMIT = 
4
FORCE_ENC = 
CR_NL.respond_to?(:force_encoding)
HTTP_1_1 = 
" HTTP/1.1\r\n"
HTTP_VERBS = 
%w{connect delete get head options patch post put trace}
HTTPS = 
'https'
NO_ENTITY = 
[204, 205, 304].freeze
REDACTED = 
'REDACTED'
UNIX = 
'unix'
USER_AGENT = 
'excon/' << VERSION
VALID_REQUEST_KEYS = 
[
  :body,
  :captures,
  :chunk_size,
  :debug_request,
  :debug_response,
  :expects,
  :headers,
  :idempotent,
  :instrumentor,
  :instrumentor_name,
  :method,
  :middlewares,
  :mock,
  :path,
  :pipeline,
  :query,
  :read_timeout,
  :request_block,
  :response_block,
  :retries_remaining, # used internally
  :retry_limit,
  :write_timeout
]
VALID_CONNECTION_KEYS = 
VALID_REQUEST_KEYS + [
  :ciphers,
  :client_key,
  :client_cert,
  :certificate,
  :certificate_path,
  :private_key,
  :private_key_path,
  :connect_timeout,
  :family,
  :host,
  :omit_default_port,
  :nonblock,
  :password,
  :port,
  :proxy,
  :scheme,
  :socket,
  :ssl_ca_file,
  :ssl_verify_peer,
  :ssl_version,
  :tcp_nodelay,
  :uri_parser,
  :user
]

Class Method Summary collapse

Class Method Details

.defaults ⇒ Hash

Returns defaults for Excon connections.

Returns:

  • (Hash) —

    defaults for Excon connections



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# File 'lib/excon.rb', line 22

def defaults
  @defaults ||= {
    :chunk_size         => CHUNK_SIZE || DEFAULT_CHUNK_SIZE,
    :ciphers            => 'HIGH:!SSLv2:!aNULL:!eNULL:!3DES',
    :connect_timeout    => 60,
    :debug_request      => false,
    :debug_response     => false,
    :headers            => {
      'User-Agent' => USER_AGENT
    },
    :idempotent         => false,
    :instrumentor_name  => 'excon',
    :middlewares        => [
      Excon::Middleware::ResponseParser,
      Excon::Middleware::Expects,
      Excon::Middleware::Idempotent,
      Excon::Middleware::Instrumentor,
      Excon::Middleware::Mock
    ],
    :mock               => false,
    :nonblock           => true,
    :omit_default_port  => false,
    :read_timeout       => 60,
    :retry_limit        => DEFAULT_RETRY_LIMIT,
    :ssl_verify_peer    => true,
    :tcp_nodelay        => false,
    :uri_parser         => URI,
    :write_timeout      => 60
  }
end

.defaults=(new_defaults) ⇒ Hash

Change defaults for Excon connections

Returns:

  • (Hash) —

    defaults for Excon connections



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# File 'lib/excon.rb', line 55

def defaults=(new_defaults)
  @defaults = new_defaults
end

.display_warning(warning) ⇒ Object 



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# File 'lib/excon.rb', line 83

def display_warning(warning)
  # Respect Ruby's $VERBOSE setting, unless EXCON_DEBUG is set
  if !$VERBOSE.nil? || ENV['EXCON_DEBUG']
    $stderr.puts '[excon][WARNING] ' << warning << "\n#{ caller.join("\n") }"
  end
end

.mock ⇒ Object

Status of mocking



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# File 'lib/excon.rb', line 91

def mock
  display_warning('Excon#mock is deprecated, use Excon.defaults[:mock] instead.')
  self.defaults[:mock]
end

.mock=(new_mock) ⇒ Object

Change the status of mocking false is the default and works as expected true returns a value from stubs or raises



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# File 'lib/excon.rb', line 99

def mock=(new_mock)
  display_warning('Excon#mock is deprecated, use Excon.defaults[:mock]= instead.')
  self.defaults[:mock] = new_mock
end

.new(url, params = {}) ⇒ Object

Initializes a new keep-alive session for a given remote host

@param [String] url The destination URL
@param [Hash<Symbol, >] params One or more option params to set on the Connection instance
@return [Connection] A new Excon::Connection instance

Raises:

  • (ArgumentError)

See Also:



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# File 'lib/excon.rb', line 135

def new(url, params = {})
  uri_parser = params[:uri_parser] || Excon.defaults[:uri_parser]
  uri = uri_parser.parse(url)
  raise ArgumentError.new("Invalid URI: #{uri}") unless uri.scheme
  params = {
    :host       => uri.host,
    :path       => uri.path,
    :port       => uri.port,
    :query      => uri.query,
    :scheme     => uri.scheme,
    :user       => (Utils.unescape_uri(uri.user) if uri.user),
    :password   => (Utils.unescape_uri(uri.password) if uri.password)
  }.merge!(params)
  Excon::Connection.new(params)
end

.ssl_ca_path ⇒ String

Returns The filesystem path to the SSL Certificate Authority.

Returns:

  • (String) —

    The filesystem path to the SSL Certificate Authority



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# File 'lib/excon.rb', line 105

def ssl_ca_path
  display_warning('Excon#ssl_ca_path is deprecated, use Excon.defaults[:ssl_ca_path] instead.')
  self.defaults[:ssl_ca_path]
end

.ssl_ca_path=(new_ssl_ca_path) ⇒ String

Change path to the SSL Certificate Authority

Returns:

  • (String) —

    The filesystem path to the SSL Certificate Authority



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# File 'lib/excon.rb', line 112

def ssl_ca_path=(new_ssl_ca_path)
  display_warning('Excon#ssl_ca_path= is deprecated, use Excon.defaults[:ssl_ca_path]= instead.')
  self.defaults[:ssl_ca_path] = new_ssl_ca_path
end

.ssl_verify_peer ⇒ true, false

Returns Whether or not to verify the peer’s SSL certificate / chain.

Returns:

  • (true, false) —

    Whether or not to verify the peer’s SSL certificate / chain



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# File 'lib/excon.rb', line 118

def ssl_verify_peer
  display_warning('Excon#ssl_verify_peer is deprecated, use Excon.defaults[:ssl_verify_peer] instead.')
  self.defaults[:ssl_verify_peer]
end

.ssl_verify_peer=(new_ssl_verify_peer) ⇒ Object

Change the status of ssl peer verification

See Also:



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# File 'lib/excon.rb', line 125

def ssl_verify_peer=(new_ssl_verify_peer)
  display_warning('Excon#ssl_verify_peer= is deprecated, use Excon.defaults[:ssl_verify_peer]= instead.')
  self.defaults[:ssl_verify_peer] = new_ssl_verify_peer
end

.stub(request_params = {}, response_params = nil) ⇒ Object

push an additional stub onto the list to check for mock requests

@param [Hash<Symbol, >] request params to match against, omitted params match all
@param [Hash<Symbol, >] response params to return from matched request or block to call with params



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# File 'lib/excon.rb', line 154

def stub(request_params = {}, response_params = nil)
  if method = request_params.delete(:method)
    request_params[:method] = method.to_s.downcase.to_sym
  end
  if url = request_params.delete(:url)
    uri = URI.parse(url)
    request_params.update(
      :host              => uri.host,
      :path              => uri.path,
      :port              => uri.port,
      :query             => uri.query,
      :scheme            => uri.scheme
    )
    if uri.user || uri.password
      request_params[:headers] ||= {}
      user, pass = URI.decode_www_form_component(uri.user.to_s), URI.decode_www_form_component(uri.password.to_s)
      request_params[:headers]['Authorization'] ||= 'Basic ' << ['' << user << ':' << pass].pack('m').delete(Excon::CR_NL)
    end
  end
  if block_given?
    if response_params
      raise(ArgumentError.new("stub requires either response_params OR a block"))
    else
      stub = [request_params, Proc.new]
    end
  elsif response_params
    stub = [request_params, response_params]
  else
    raise(ArgumentError.new("stub requires either response_params OR a block"))
  end
  stubs.unshift(stub)
  stub
end

.stub_for(request_params = {}) ⇒ Object

get a stub matching params or nil

@param [Hash<Symbol, >] request params to match against, omitted params match all
@return [Hash<Symbol, >] response params to return from matched request or block to call with params



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# File 'lib/excon.rb', line 191

def stub_for(request_params={})
  if method = request_params.delete(:method)
    request_params[:method] = method.to_s.downcase.to_sym
  end
  Excon.stubs.each do |stub, response_params|
    captures = { :headers => {} }
    headers_match = !stub.has_key?(:headers) || stub[:headers].keys.all? do |key|
      case value = stub[:headers][key]
      when Regexp
        if match = value.match(request_params[:headers][key])
          captures[:headers][key] = match.captures
        end
        match
      else
        value == request_params[:headers][key]
      end
    end
    non_headers_match = (stub.keys - [:headers]).all? do |key|
      case value = stub[key]
      when Regexp
        if match = value.match(request_params[key])
          captures[key] = match.captures
        end
        match
      else
        value == request_params[key]
      end
    end
    if headers_match && non_headers_match
      request_params[:captures] = captures
      return [stub, response_params]
    end
  end
  nil
end

.stubs ⇒ Object

get a list of defined stubs



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# File 'lib/excon.rb', line 228

def stubs
  @stubs ||= []
end

.unstub(request_params = {}) ⇒ Object

remove first/oldest stub matching request_params

@param [Hash<Symbol, >] request params to match against, omitted params match all
@return [Hash<Symbol, >] response params from deleted stub



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# File 'lib/excon.rb', line 235

def unstub(request_params = {})
  stub = stub_for(request_params)
  Excon.stubs.delete_at(Excon.stubs.index(stub))
end