Error calling a SOAP service from within a Rails controller

ruby-talk
1

The following works fine as a standalone ruby program:

···

**********************************************************************************************
t = Time.now
starter = Time.local(t.year,t.mon, t.day) + (24 *3600)
ender = starter + 7 * 24 *3600
lat = 40.352039
lon = -74.191961

require 'soap/wsdlDriver'

params = {:maxt => false, :mint => false, :temp => true, :dew => false,
  :pop12 => false, :qpf => false, :sky => false, :snow => false,
  :wspd => false, :wdir => false, :wx => false, :waveh => false,
  :icons => false, :rh => false, :appt => true}

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

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

                params = {:maxt => false, :mint => false, :temp =>
true, :dew => false,
                        :pop12 => false, :qpf => false, :sky => false,
:snow => false,
                        :wspd => false, :wdir => false, :wx => false,
:waveh => false,
                        :icons => false, :rh => false, :appt => true}

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

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

        end
**********************************************************************************************

2

When you're playing with SOAP in Rails, I think you want to use
ActionWebService. See:

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

3

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 = params[:lat]
               lon = params[:lon]
    t = Time.now
    starter = Time.local(t.year,t.mon, t.day) + (24 *3600)
    ender = starter + 7 * 24 *3600
  
    params = WeatherParametersType.new({:maxt => false, :mint => false,
:temp => true, :dew => false,
        :pop12 => false, :qpf => false, :sky => false, :snow => false,
        :wspd => false, :wdir => false, :wx => false, :waveh => false,
        :icons => false, :rh => false, :appt => true})
        
      soap_client = ActionWebService::Client::Soap.new(WeatherAPI,
"http://www.weather.gov/forecasts/xml/SOAP_server/ndfdXMLserver.php"\)
      @dwml = soap_client.NDFDgen(lat, lon, 'time-series', starter, ender, params)
      @data = @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 :pop12, :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 => [[Float], [Float], [String], [Time],
[Time], [WeatherParametersType]], :returns => [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'

···

On 1/26/06, Anthony Elizondo <anthony.elizondo@gmail.com> wrote:

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

4

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

···

On 1/26/06, Dean Holdren <deanholdren@gmail.com> wrote:

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

                params = WeatherParametersType.new({:maxt => false, :mint => false,
:temp => true, :dew => false,
                        :pop12 => false, :qpf => false, :sky => false, :snow => false,
                        :wspd => false, :wdir => false, :wx => false, :waveh => false,
                        :icons => false, :rh => false, :appt => true})

                soap_client = ActionWebService::Client::Soap.new(WeatherAPI,
"http://www.weather.gov/forecasts/xml/SOAP_server/ndfdXMLserver.php&quot;\)
                @dwml = soap_client.NDFDgen(lat, lon, 'time-series', starter, ender, params)
                @data = @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 :pop12, :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 => [[Float], [Float], [String], [Time],
[Time], [WeatherParametersType]], :returns => [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'

On 1/26/06, Anthony Elizondo <anthony.elizondo@gmail.com> wrote:
> 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
>