@Restricted(DoNotUse.class) // accessed via REST API
public HttpResponse doGenerateSnippet(StaplerRequest req, @QueryParameter String json)
throws Exception {
// TODO JENKINS-31458 is there not an easier way to do this?
JSONObject jsonO = JSONObject.fromObject(json);
Jenkins j = Jenkins.getActiveInstance();
Class<?> c = j.getPluginManager().uberClassLoader.loadClass(jsonO.getString("stapler-class"));
StepDescriptor descriptor = (StepDescriptor) j.getDescriptor(c.asSubclass(Step.class));
Object o;
try {
o = descriptor.newInstance(req, jsonO);
} catch (RuntimeException x) { // e.g. IllegalArgumentException
return HttpResponses.plainText(Functions.printThrowable(x));
}
try {
String groovy = object2Groovy(o);
if (descriptor.isAdvanced()) {
String warning = Messages.Snippetizer_this_step_should_not_normally_be_used_in();
groovy = "// " + warning + "\n" + groovy;
}
return HttpResponses.plainText(groovy);
} catch (UnsupportedOperationException x) {
Logger.getLogger(CpsFlowExecution.class.getName())
.log(Level.WARNING, "failed to render " + json, x);
return HttpResponses.plainText(x.getMessage());
}
}
