FunctionApp.java

package com.example;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;

import java.util.logging.Logger;

/**
 * Hello FunctionApp
 */
public class FunctionApp {
  protected static final Logger logger = Logger.getLogger("basic");
  public static JsonObject main(JsonObject args) {

    JsonObject response = new JsonObject();
    JsonPrimitive nameArg = args.getAsJsonPrimitive("name");
    String result;
    if (nameArg == null) {
      result = "Hello! Welcome to OpenWhisk";
    } else {
      result = "Hello " + nameArg.getAsString() + "! Welcome to OpenWhisk";
    }
    response.addProperty("greetings", result);

    logger.info("invoked with params: " + args);
    return response;
  }
}