https://community.cloudera.com/t5/Archives-of-Support-Questions/How-to-make-an-authenticated-REST-microservice-calls-using/m-p/108738#M46549 <P>Can NiFi handle authenticated calls to REST microservices? For example before calling a REST service, the client needs to call an authentication service to obtain a token or session id. The session token is then passed into a REST call to post the data. </P><P>Is there any mechanism for maintaining the token and renewing it periodically?</P> Thu, 17 Nov 2016 23:11:08 GMT Carolyn 2016-11-17T23:11:08Z https://community.cloudera.com/t5/Archives-of-Support-Questions/How-to-make-an-authenticated-REST-microservice-calls-using/m-p/108738#M46549 <P>Can NiFi handle authenticated calls to REST microservices? For example before calling a REST service, the client needs to call an authentication service to obtain a token or session id. The session token is then passed into a REST call to post the data. </P><P>Is there any mechanism for maintaining the token and renewing it periodically?</P> Thu, 17 Nov 2016 23:11:08 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/How-to-make-an-authenticated-REST-microservice-calls-using/m-p/108738#M46549 Carolyn 2016-11-17T23:11:08Z https://community.cloudera.com/t5/Archives-of-Support-Questions/How-to-make-an-authenticated-REST-microservice-calls-using/m-p/108739#M46550 <P> If the token can be retrieved from an external resource via static credentials, you can use a separate <CODE>InvokeHTTP</CODE> processor to perform the authentication and load the token into flowfile content, which is then fed to the follow-on <CODE>InvokeHTTP</CODE> processor to perform the actual request. </P> <P> <A rel="user" href="https://community.cloudera.com/users/5078/pvillard.html" nodeid="5078">@Pierre Villard</A> has a <A target="_blank" href="https://pierrevillard.com/2016/04/12/oauth-1-0a-with-apache-nifi-twitter-api-example/">good example of using OAuth 1.0</A> to generate credential material and then use that in a follow-on request. </P> Fri, 18 Nov 2016 04:04:43 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/How-to-make-an-authenticated-REST-microservice-calls-using/m-p/108739#M46550 alopresto 2016-11-18T04:04:43Z