com.github.jcustenborder.kafka.connect.utils.config.validators.ValidURI.java Source code

Introduction

Here is the source code for com.github.jcustenborder.kafka.connect.utils.config.validators.ValidURI.java

Source

/**
 * Copyright  2018 Jeremy Custenborder (jcustenborder@gmail.com)
 *
 * Licensed 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 com.github.jcustenborder.kafka.connect.utils.config.validators;

import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableSet;
import org.apache.kafka.common.config.ConfigDef;
import org.apache.kafka.common.config.ConfigException;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Set;

class ValidURI implements ConfigDef.Validator {
    final Set<String> validSchemes;

    public ValidURI() {
        this(new String[0]);
    }

    public ValidURI(String... schemes) {
        validSchemes = ImmutableSet.copyOf(schemes);
    }

    void validate(String config, String value) {
        try {
            final URI uri = new URI(value);

            if (!validSchemes.isEmpty() && !validSchemes.contains(uri.getScheme())) {
                throw new ConfigException(config, value, String.format("Scheme must be one of the following. '%s'",
                        Joiner.on("', '").join(this.validSchemes)));
            }

        } catch (URISyntaxException e) {
            ConfigException configException = new ConfigException(config, value, "Could not parse to URL.");
            configException.initCause(e);

            throw configException;
        }
    }

    @Override
    public void ensureValid(String config, Object value) {
        if (value instanceof String) {
            validate(config, (String) value);
        } else if (value instanceof List) {
            List<String> values = (List<String>) value;
            for (String v : values) {
                validate(config, v);
            }
        } else {
            throw new ConfigException(config, value, "Must be a string or list.");
        }
    }
}