How can I POST data to a remote service in Jenkins pipeline/workflow?

[Scott Richmond]

I require the ability to HTTP POST data to a remote service via some kind of REST client. This will be done on Windows agents, so the native curl support in sh is not suitable. Is there any way to do this in the groovy script?

[Craig Rodrigues]

Hi,

curl is one way of calling a REST API from the command-line, but it

is not the only way.  You can create a Jenkins job, and
use many languages to call REST API's inside these jobs,

even on Windows.

For example, if you want to use groovy, using the HTTPBuilder library
is one way to do it:
https://www.google.com/search?q=groovy+rest+api

If you want to use C#, you can look at using the restsharp library:
https://www.google.com/search?q=c+sharp+rest+api

--

Craig

[Scott Richmond]

The httpbuilder library doesn’t appear to work as it’s not available. Do I have to add it to the default libraries or something?

 

Sent from Outlook Mail for Windows 10 phone

[Michael Neale]

Do you have access to powershell? 

http://superuser.com/questions/344927/powershell-equivalent-of-curl looks possibly handy. 

(calling from pipeline script should be fine, but I can't find an example of how best to do it. Some comment that blocking for an external thing is not ideal.. vs a shell script which will do the right thing if you have it available). 

https://www.cloudbees.com/blog/jenkins-workflow-creating-class-wrap-access-secured-http-endpoint shows an extension that calls a remote jenkins with form auth, which isn't quite what you want, but it is calling https from within a workflow scripting using the global library, so you may be able to follow along but do your own. 

[Craig Rodrigues]

Yes, you would need to install HTTPBuilder.

You can decide if you want to install additional groovy libraries,

or if you prefer switch to a scripting language of your choice, which

you can call from inside a Jenkins job in order to access a REST service.

--

Craig

[Scott Richmond]

How does one install httpbuilder a part of the Jenkins client? I’ve found very little instruction on this.

[Andrew Bayer]

So using HTTPBuilder from Pipeline is not a good idea - see https://issues.jenkins-ci.org/browse/JENKINS-26192 - there's work in progress on https://github.com/jenkinsci/http-request-plugin/pull/13 for adding Pipeline support to the http-request-plugin, which is probably the direction you'd want to go.

A.

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[James Nord]

Curl is just a program that most Unix like OSes happen to have installed by default.

There are native binaries available for windows (both 32 and 64bit) that you could install on your slaves (erm agents) if you already have the curl commands written.

So you can call it on windows using the 'bat' pipeline step.

/James