de.quantummaid.httpmaid.examples.awslambda.usecases.HelloRequest Maven / Gradle / Ivy

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/*
 * Copyright (c) 2020 Richard Hauswald - https://quantummaid.de/.
 *
 * 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.
 */

package de.quantummaid.httpmaid.examples.awslambda.usecases;

import java.util.Optional;

public final class HelloRequest {
    public static final int MAX_LENGTH = 8;
    public final String name;

    private HelloRequest(final String name) {
        this.name = name;
    }

    public static HelloRequest helloRequest(final String input) {
        final String trimmedInput = Optional
                .ofNullable(input)
                .orElse("")
                .trim();
        if (trimmedInput.length() == 0) {
            throw new ValidationException("name", "is a required parameter");
        }
        if (trimmedInput.length() > MAX_LENGTH) {
            throw new ValidationException("name", "must be max. 8 characters long");
        }
        return new HelloRequest(trimmedInput);
    }
}