Cucumber Framework Migration - Existing Rest Assured to Karate Framework - cucumber

I am working as automation tester for banking domain account. I have a query and need your help.
Current Approach :
1.The framework which we are using for API-Services testing is Java based - Serenity -Cucumber framework using Rest Assured.
2.All the script development/script maintenance activities related to this framework is taken care by the automation testers in our team.
3.Few weeks before , we got to know about Karate framework and completed the PoC( Proof of concept).
4.All went well and we are in the plan to migrate our existing Rest assured java code Karate framework.
The reason for migration - Karate framework Api services testing can be able to do by Manual testers as well.So we are in the plan for migration.
Query
We have almost 80 web services already developed in Rest assured and running successfully.
Also for migration, all the services are inter-dependent. So we have to use both Res-assured and Karate framework code together ,unless it's fully migrated.
Can't able to migrate all the services immediately ,it's a time taken effort.
Is it possible to run karate framework and Rest Assured Java code in the same scenario.
Scnario given in Karate Feature file:
Given urlCustomerservices
When method get
Then status 200
def getCustIDfromUserservices=newcallJavaFunction().getcustid("user","password")
print getCustIDfromUserservices
This "getcustid" have the Rest assured java code for "Post" call service to get the customer number.
When I am running this in code karate framework , getting this error -
"io.restassured.internal.RequestSpecificationIMpl.invokeMethod(java/lang/String;Ljava/lang/object;)Ljava/lang/object;
Could any help in this. Whether can we run both karate and Rest assured code together in same scenario in karate framework . If yes, why am getting this error, when am trying to get the response in Rest assured.

First I'll say that this is not something we claim to support :) So you are on your own.
That said, it sounds like a simple library conflict. My guess is your existing Maven pom.xml has a lot of libraries floating around. You will need to do some investigation and find out what maven exclusions you need to do or which libraries need explicit versions specified. If you are lucky, switching from karate-apache to karate-jersey may do the trick.
Also I strongly recommend creating a Karate quickstart, then adding the extra stuff one by one in "hello world" mode and see what causes the problem. Use the mvn dependency:tree command and see the differences between a Karate project and yours. If you know how to use Maven profiles, that may be one way to go. All the best !
Worst case, fall back to 2 maven modules and run 2 test-suites, it is fine and not the end of the world. You can gradually migrate.
EDIT - also see https://stackoverflow.com/a/65628686/143475

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I sadly discovered that the Jenkins pipeline does not allow me to use any other service than the ones listed here: SCN Blog (scroll to the Appendix).
This does not make so much sense to me, as now the SDK can be used - and it is sponsored to be used by SAP - also with SaaS in its ecosystem, SuccessFactors being one of them.
Any hint? Can this check be somehow "bypassed"?
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Roberto.
Please note that the blog post is quite old, have you verified your assumption that it does not work with SuccessFactors API?
Nonetheless, we recently introduced a configuration option which allows you to disable certain checks, cf https://github.com/SAP/cloud-s4-sdk-pipeline/blob/master/configuration.md#s4sdkqualitychecks
checkServices is what you would want to disable in your scenario.
As stated by Florian in the comment and following the Project Piper documentation, parameters "checkServices" and "customODataServices" can be used to customize the behavior of the pipeline when running upon a non-Business Hub API.
"checkServices: false" will completely deactivated the check, whereas "customODataServices: [ yourApiName ]" will skip the check just for the specified services.

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Re: "There must be a way to do this"
But you will not necessarily have access to it. The ODM product developers have experience, source code, documentation, and other tools that you do not have access to.
Having said that, there is an build/deploy API that you may be able to access via ANT. I haven't used it since switching to Decision Services when that became feasible in ODM 8.7. Standard practice before that time was to automate deployments via Ant and a "headless" version of Eclipse. If the latest online docs don't describe it, you might try the older docs.
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I am working on project where we have used spring integration. And we have may flow which eventually create a full flow of the system.
Now, we needs to create a main flow which have all abstract component which internally call the sub flow. I found spring integration flow project for create a subflow. https://github.com/spring-projects/spring-integration-flow/tree/master.
But while I try to find out latest jar I found which is build on 2015 (https://mvnrepository.com/artifact/org.springframework.integration/spring-integration-flow). Now I am confused that do we have to use this project or some other approach spring integration build which needs to use.
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I understand that this might not be an answer you are looking for, but at least this one should be as some food to think about.

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How to do automation for web services using Cu Cumber? Please guide me on how to start it for my project on web services.
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However, The most recommended option is to use ruby language with the cucumber framework. If your using ruby and if your project has rest-api's, you can use the gem called rest-client and airborne.
You can search about these, and learn how are you going to pass the request with the parameters and analyse the response and call these codes using gherkin language. All these together will constitute a framework called cucumber, which you can use to execute.
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