Ruby Web Services Client

I have a simple web services client written in Java. The essence of it
is about 30 lines of code. It sends an XML message of about 20 lines to
a web service and receives an XML response that may be as many as 8000
lines. I have searched the web and have bought the books Programming
Ruby and Agile Web D. with Rails but find nothing that leads me
to what I need.

I would appreciate suggestions.
Peter

Hey Peter,

I’ve done a similar thing before in Ruby. (In the exact same
situation, where I migrated my java client, to a lighter and faster
Ruby client)
What is the problem you’re facing ?
-> creating the message ?
-> calling the web service ?
-> streaming the answer ?

Niko,

Peter H. wrote:

I have a simple web services client written in Java. The essence of it
is about 30 lines of code. It sends an XML message of about 20 lines to
a web service and receives an XML response that may be as many as 8000
lines. I have searched the web and have bought the books Programming
Ruby and Agile Web D. with Rails but find nothing that leads me
to what I need.

I would appreciate suggestions.
Peter

Clarification of my above entry:
It is implied but not stated that I want a Ruby program that does the
same as my existing Java program.
Peter

Actually, one more question we might be interested in are:

  • what is the protocol ?

Niko,

Peter H. wrote:

Peter H. wrote:

I have a simple web services client written in Java. The essence of it
is about 30 lines of code. It sends an XML message of about 20 lines to
a web service and receives an XML response that may be as many as 8000
lines. I have searched the web and have bought the books Programming
Ruby and Agile Web D. with Rails but find nothing that leads me
to what I need.

I would appreciate suggestions.
Peter

Clarification of my above entry:
It is implied but not stated that I want a Ruby program that does the
same as my existing Java program.
Peter

Niko,
I guess all of the above. I have done a little with Ruby on Rails and
would like to use it, but don’r want to proceed until I solve this
problem. In my web searching I find documentation of several Ruby
protocol implementations but some are quite old.

The Java code looks like this:
String soapAction = args[0];
String sendmsg = soapAction+".xml";
String urlString = “http://dealer.patagonia.com/za/PXM”;
try {
URL url = new URL(urlString);
HttpURLConnection httpConnection =
(HttpURLConnection) url.openConnection();
httpConnection.setRequestProperty(“SOAPAction”, soapAction);
httpConnection.setDoOutput(true);
httpConnection.setDoInput(true);
httpConnection.setRequestMethod(“POST”);
httpConnection.setRequestProperty(“Content-Type”, “text/xml”);
PrintStream httpout = new
PrintStream(httpConnection.getOutputStream());
BufferedReader in = new BufferedReader(new
InputStreamReader(fis));
/* Get first line of the outgoing message /
String line = in.readLine();
while (line != null) {
System.out.println(line);
/
Send the line to the http connection */
httpout.print(line);
line = in.readLine();
System.out.println(“Reading the response stream …”);
BufferedReader in2 =
new BufferedReader(
new InputStreamReader(httpConnection.getInputStream()));
System.out.println(“Response:”);
String line = in2.readLine();
while (line != null) {
if (line.length() > 2)
System.out.println(line);
line = in2.readLine();

I have fumbled around with Ruby HTTP but am getting nowhere.
I would appreciate any direction you can give.
Peter

String sendmsg = soapAction+".xml";

Ah it looks like you’re using SOAP; check out the soap4r project. :slight_smile:

–Jeremy

On 1/21/07, Peter H. [email protected] wrote:

Peter
protocol implementations but some are quite old.
httpConnection.setDoOutput(true);
System.out.println(line);
if (line.length() > 2)

Posted via http://www.ruby-forum.com/.


My free Ruby e-book:
http://www.humblelittlerubybook.com/book/

My blogs:
http://www.mrneighborly.com/
http://www.rubyinpractice.com/

Nicolas H. Modrzyk wrote:

Hey Peter,

Mark W. is the guy that put me on track the first time.
Did you read his article?
http://www.devx.com/enterprise/Article/28101/1954?pf=true

He has a SOAP section as well. That would help.

Niko,

Thanks for the reference. I read the article, but it talks about web
services, not clients. Maybe one can be inferred from the other but I’m
not able to.
Peter

Hey Peter,

Mark W. is the guy that put me on track the first time.
Did you read his article?
http://www.devx.com/enterprise/Article/28101/1954?pf=true

He has a SOAP section as well. That would help.

Niko,

Jeremy McAnally wrote:

String sendmsg = soapAction+".xml";

Ah it looks like you’re using SOAP; check out the soap4r project. :slight_smile:

–Jeremy

On 1/21/07, Peter H. [email protected] wrote:

Peter
protocol implementations but some are quite old.
httpConnection.setDoOutput(true);
System.out.println(line);
if (line.length() > 2)

Posted via http://www.ruby-forum.com/.


My free Ruby e-book:
http://www.humblelittlerubybook.com/book/

My blogs:
http://www.mrneighborly.com/

Thanks. I still don’t see how to send and XML message and get an XML
response. Maybe it’s beyond me.
Peter

http://www.rubyinpractice.com/

Thanks to everyone for trying to help this old man. For the moment I am
giving up on this approach. I am going to have Ruby on Rails send a
request to the Java code via a file and get the response via a file. Not
elegant but it should satisfy my low volume needs - and I think I know
how to do it.

Thanks,
Peter

On 1/22/07, Peter H. [email protected] wrote:

Jeremy McAnally wrote:

String sendmsg = soapAction+".xml";

Ah it looks like you’re using SOAP; check out the soap4r project. :slight_smile:

Thanks. I still don’t see how to send and XML message and get an XML
response. Maybe it’s beyond me.

Do you have a WSDL for the service?

http://www.zorched.net/2006/02/09/ruby-soap4r-for-web-services/
service = SOAP::WSDLDriverFactory.new(WSDL_URL).create_rpc_driver
service.wiredump_dev = STDOUT if $DEBUG

p service.SearchContacts(:search => 'some_name')

http://www.pranavbihari.com/articles/2005/12/02/testing-paypal-web-services-with-ruby-soap4r
http://www.brendonwilson.com/blog/2006/04/02/ruby-soap4r-wsdl-hell

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