Package io.nitric.faas

Class AbstractResponseContext

  • Direct Known Subclasses:
    HttpResponseContext, TopicResponseContext
    public abstract class AbstractResponseContext
extends Object

    Provides an abstract Nitric response context class.

    The example below illustrates unwrapping the FaaS trigger and response context objects. 

    
 package com.example;

 import io.nitric.faas.Faas;
 import io.nitric.faas.Trigger;
 import io.nitric.faas.NitricFunction;
 import io.nitric.faas.Response;

 public class HelloWorld implements NitricFunction {

     public Response handle(Trigger trigger) {
         if (trigger.getContext().isHttp()) {
             var httpContext = trigger.getContext().asHttp();
             // Extract HTTP context metadata
         } else if (trigger.getContext().isTopic()) {
             var topicContext = trigger.getContext().asTopic();
             // Extract Topic context metadata
         }

         var = response trigger.buildResponse("Hello World");

         if (response.getContext().isHttp()) {
             // Augment response with additional context
             var httpContext = response.getContext.asHttp();
             ...
         } else if (response.getContext().isTopic()) {
             // Augment response with additional context
             var topicContext = response.getContext.asTopic();
             ...
         }

         return response;
     }

     public static void main(String... args) {
         Faas.start(new HelloWorld());
     }
 }
    See Also:
    HttpResponseContext, TopicResponseContext

    • Constructor Detail

      • AbstractResponseContext

        public AbstractResponseContext()

    • Method Detail

      • isHttp

        public boolean isHttp()
        Returns:
        true if this is HttpResponseContext otherwise false

      • isTopic

        public boolean isTopic()
        Returns:
        true if this is TopicResponseContext otherwise false

      • asHttp

        public HttpResponseContext asHttp()
        Returns:
        this as HttpResponseContext or null if it isHttp() is false

      • asTopic

        public TopicResponseContext asTopic()
        Returns:
        this as TopicResponseContext or null if it isTopic() is false