Error calling a SOAP service from within a Rails controller

[Dean Holdren]

The following works fine as a standalone ruby program:
***************************************************************************=
*******************
t =3D Time.now
starter =3D Time.local(t.year,t.mon, t.day) + (24 *3600)
ender =3D starter + 7 * 24 *3600
lat =3D 40.352039
lon =3D -74.191961

require 'soap/wsdlDriver'

params =3D {:maxt =3D> false, :mint =3D> false, :temp =3D> true, :dew =3D> =
false,
op12 =3D> false, :qpf =3D> false, :sky =3D> false, :snow =3D> false,
:wspd =3D> false, :wdir =3D> false, :wx =3D> false, :waveh =3D> false,
:icons =3D> false, :rh =3D> false, :appt =3D> true}

wsdl =3D "http://www.weather.gov/forecasts/xml/DWMLgen/wsdl/ndfdXML.wsdl"
drv =3D SOAP::WSDLDriverFactory.new(wsdl).create_rpc_driver
drv.wiredump_dev =3D STDOUT if $DEBUG
dwml =3D drv.NDFDgen(lat, lon, 'time-series', starter, ender, params)
puts dwml
require 'xsd/mapping'
data =3D XSD::Mapping.xml2obj(dwml).data
***************************************************************************=
*******************
However, when I try to call the same from within a ruby controller, I get:

SOAP::HTTPStreamError (502: Bad Gateway):
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:200:in `send_post'
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:109:in `send'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:170:in `route'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:141:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:178:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:232:in `nDFDgen'
c:/ruby-1.8.4/lib/ruby/1.8/soap/wsdlDriver.rb:117:in `NDFDgen'

The code in my controller is:
***************************************************************************=
*******************
def get_weather
lat =3D params[:lat]
lon =3D params[:lon]

t =3D Time.now
starter =3D Time.local(t.year,t.mon, t.day) + (24 *3600)
ender =3D starter + 7 * 24 *3600

params =3D {:maxt =3D> false, :mint =3D> false, :temp =3D>
true, :dew =3D> false,
op12 =3D> false, :qpf =3D> false, :sky =3D> false=
,
:snow =3D> false,
:wspd =3D> false, :wdir =3D> false, :wx =3D> false,
:waveh =3D> false,
:icons =3D> false, :rh =3D> false, :appt =3D> true}

wsdl =3D
"http://www.weather.gov/forecasts/xml/DWMLgen/wsdl/ndfdXML.wsdl"
drv =3D SOAP::WSDLDriverFactory.new(wsdl).create_rpc_driver
drv.wiredump_dev =3D STDOUT if $DEBUG
dwml =3D drv.NDFDgen(lat, lon, 'time-series', starter,
ender, params)

@data =3D XSD::Mapping.xml2obj(dwml).data

end
***************************************************************************=
*******************

 

[Anthony Elizondo]

When you're playing with SOAP in Rails, I think you want to use
ActionWebService. See:
http://rails.rubyonrails.com/classes/ActionWebService/Client/Soap.html

For Rails specific questions such as this, try the Rails mailing list,
at http://lists.rubyonrails.org/mailman/listinfo/rails or
http://www.ruby-forum.com/forum/3

 

[Dean Holdren]

thanks, I've tried using ActionWebService::Client::SOAP, but I get the
same error (pretty much), here's the version of the method within my
Controller that used ActionWebService:

def get_weather
lat =3D params[:lat]
lon =3D params[:lon]
=09=09t =3D Time.now
=09=09starter =3D Time.local(t.year,t.mon, t.day) + (24 *3600)
=09=09ender =3D starter + 7 * 24 *3600
=09
=09=09params =3D WeatherParametersType.new({:maxt =3D> false, :mint =3D> fa=
lse,
:temp =3D> true, :dew =3D> false,
=09 =09=09op12 =3D> false, :qpf =3D> false, :sky =3D> false, :snow =3D> =
false,
=09 =09=09:wspd =3D> false, :wdir =3D> false, :wx =3D> false, :waveh =3D> =
false,
=09 =09=09:icons =3D> false, :rh =3D> false, :appt =3D> true})
=09 =09=09
=09 =09soap_client =3D ActionWebService::Client::Soap.new(WeatherAPI,
"http://www.weather.gov/forecasts/xml/SOAP_server/ndfdXMLserver.php")
=09 =09@dwml =3D soap_client.NDFDgen(lat, lon, 'time-series', starter, end=
er, params)
=09 =09@data =3D @dwml
end

and I'm using these classes I've defined:

class WeatherParametersType < ActionWebService::Struct
member :maxt, :boolean
member :mint, :boolean
member :temp, :boolean
member :dew, :boolean
member op12, :boolean
member :qpf, :boolean
member :sky, :boolean
member :snow, :boolean
member :wspd, :boolean
member :wdir, :boolean
member :wx, :boolean
member :waveh, :boolean
member :icons, :boolean
member :rh, :boolean
member :appt, :boolean
end

=09
class WeatherAPI < ActionWebService::API::Base
=09api_method :NDFDgen, :expects =3D> [[Float], [Float], [String], [Time],
[Time], [WeatherParametersType]], :returns =3D> [String]
end

The error stack trace:

SOAP::HTTPStreamError (502: Bad Gateway):
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:200:in `send_post'
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:109:in `send'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:170:in `route'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:141:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:178:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:232:in `NDFDgen'
c:/ruby-1.8.4/lib/ruby/gems/1.8/gems/actionwebservice-1.0.0/lib/action_=
web_s
ervice/client/soap_client.rb:61:in `perform_invocation'
c:/ruby-1.8.4/lib/ruby/gems/1.8/gems/actionwebservice-1.0.0/lib/action_=
web_s
ervice/client/base.rb:15:in `method_missing'

 

[Dean Holdren]

well it turns out I was passing bad parameters to the service. weird
response though...

thanks, I've tried using ActionWebService::Client::SOAP, but I get the
same error (pretty much), here's the version of the method within my
Controller that used ActionWebService:

def get_weather
lat =3D params[:lat]
lon =3D params[:lon]
t =3D Time.now
starter =3D Time.local(t.year,t.mon, t.day) + (24 *3600)
ender =3D starter + 7 * 24 *3600

params =3D WeatherParametersType.new({:maxt =3D> false, := mint =3D> false,
:temp =3D> true, :dew =3D> false,
op12 =3D> false, :qpf =3D> false, :sky =3D> fal= se, :snow =3D> false,
:wspd =3D> false, :wdir =3D> false, :wx =3D> fals= e, :waveh =3D> false,
:icons =3D> false, :rh =3D> false, :appt =3D> tru= e})

soap_client =3D ActionWebService::Client::Soap.new(Weathe= rAPI,
"http://www.weather.gov/forecasts/xml/SOAP_server/ndfdXMLserver.php")
@dwml =3D soap_client.NDFDgen(lat, lon, 'time-series', st= arter, ender, params)
@data =3D @dwml
end

and I'm using these classes I've defined:

class WeatherParametersType < ActionWebService::Struct
member :maxt, :boolean
member :mint, :boolean
member :temp, :boolean
member :dew, :boolean
member op12, :boolean
member :qpf, :boolean
member :sky, :boolean
member :snow, :boolean
member :wspd, :boolean
member :wdir, :boolean
member :wx, :boolean
member :waveh, :boolean
member :icons, :boolean
member :rh, :boolean
member :appt, :boolean
end


class WeatherAPI < ActionWebService::API::Base
api_method :NDFDgen, :expects =3D> [[Float], [Float], [String], [= Time],
[Time], [WeatherParametersType]], :returns =3D> [String]
end

The error stack trace:

SOAP::HTTPStreamError (502: Bad Gateway):
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:200:in `send_post'
c:/ruby-1.8.4/lib/ruby/1.8/soap/streamHandler.rb:109:in `send'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:170:in `route'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/proxy.rb:141:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:178:in `call'
c:/ruby-1.8.4/lib/ruby/1.8/soap/rpc/driver.rb:232:in `NDFDgen'
c:/ruby-1.8.4/lib/ruby/gems/1.8/gems/actionwebservice-1.0.0/lib/actio= n_web_s
ervice/client/soap_client.rb:61:in `perform_invocation'
c:/ruby-1.8.4/lib/ruby/gems/1.8/gems/actionwebservice-1.0.0/lib/actio= n_web_s
ervice/client/base.rb:15:in `method_missing'

When you're playing with SOAP in Rails, I think you want to use
ActionWebService. See:
http://rails.rubyonrails.com/classes/ActionWebService/Client/Soap.html

For Rails specific questions such as this, try the Rails mailing list,
at http://lists.rubyonrails.org/mailman/listinfo/rails or
http://www.ruby-forum.com/forum/3