err.err

  "errorMessage": "Class dbmgmt does not implement RequestHandler with concrete type parameters"

Clojure:

javap target/classes/dbmgmt.class
public class dbmgmt implements com.amazonaws.services.lambda.runtime.RequestHandler {
  public static {};
  public dbmgmt();
  public boolean equals(java.lang.Object);
  public java.lang.String toString();
  public int hashCode();
  public java.lang.Object clone();
  public java.lang.Object handleRequest(java.lang.Object, com.amazonaws.services.lambda.runtime.Context);
  public static void main(java.lang.String[]);
}

Java:

javap target/classes/com/streambright/Dbmgmt.class
Compiled from "Dbmgmt.java"
public class com.streambright.Dbmgmt implements com.amazonaws.services.lambda.runtime.RequestHandler<java.lang.Object, java.lang.Object> {
  public com.streambright.Dbmgmt();
  public java.lang.String handleRequest(java.lang.Object, com.amazonaws.services.lambda.runtime.Context);
  public java.lang.Object handleRequest(java.lang.Object, com.amazonaws.services.lambda.runtime.Context);
} 

lambda.clj

(defn -handleRequest [this in ctx]
  (reify RequestHandler
    (handleRequest [this in ctx] "ok")))

lambda.java

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class Dbmgmt implements RequestHandler<Object, Object> {

    @Override
    public String handleRequest(Object in, Context ctx) {
        System.out.println("ok");
        ctx.getLogger().log("ok");
        return "ok";
    }
}