org.apache.gobblin.service.validator.TemplateUriValidator.java Source code

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Here is the source code for org.apache.gobblin.service.validator.TemplateUriValidator.java

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/*
 * 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 org.apache.gobblin.service.validator;

import java.net.URI;
import java.net.URISyntaxException;

import com.google.common.base.Splitter;
import com.linkedin.data.DataMap;
import com.linkedin.data.element.DataElement;
import com.linkedin.data.message.Message;
import com.linkedin.data.schema.validator.AbstractValidator;
import com.linkedin.data.schema.validator.ValidatorContext;

/**
 * Validates the String value to ensure that it is a comma separated list of FS scheme URIs
 */
public class TemplateUriValidator extends AbstractValidator {
    private static final String FS_SCHEME = "FS";

    public TemplateUriValidator(DataMap config) {
        super(config);
    }

    @Override
    public void validate(ValidatorContext ctx) {
        DataElement element = ctx.dataElement();
        Object value = element.getValue();
        String str = String.valueOf(value);
        boolean valid = true;

        try {
            Iterable<String> uriStrings = Splitter.on(",").omitEmptyStrings().trimResults().split(str);

            for (String uriString : uriStrings) {
                URI uri = new URI(uriString);

                if (!uri.getScheme().equalsIgnoreCase(FS_SCHEME)) {
                    throw new URISyntaxException(uriString, "Scheme is not FS");
                }
            }
        } catch (URISyntaxException e) {
            valid = false;
        }

        if (!valid) {
            ctx.addResult(
                    new Message(element.path(), "\"%1$s\" is not a well-formed comma-separated list of URIs", str));
        }
    }
}