ServerlessTemplateFilePathValidator.java

/*
* Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
*  http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 com.amazonaws.eclipse.lambda.serverless.validator;

import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;

import com.amazonaws.eclipse.lambda.serverless.Serverless;
import com.amazonaws.util.StringUtils;

public class ServerlessTemplateFilePathValidator implements IValidator {

    public IStatus validate(Object value) {
        String s = (String)value;
        if (StringUtils.isNullOrEmpty(s)) {
            return ValidationStatus.error("Serverless template file path must be provided!");
        }
        try {
            Serverless.load(s);
        } catch (Exception e) {
            return ValidationStatus.error(e.getMessage());
        }
        return ValidationStatus.ok();
    }

}