/*
 * 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
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.logging.log4j.core.config.plugins.validation.validators;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.config.plugins.convert.TypeConverters;
import org.apache.logging.log4j.core.config.plugins.validation.ConstraintValidator;
import org.apache.logging.log4j.core.config.plugins.validation.constraints.ValidPort;
import org.apache.logging.log4j.status.StatusLogger;

Validator that checks an object to verify it is a valid port number (an integer between 0 and 65535).
Since:2.8
/** * Validator that checks an object to verify it is a valid port number (an integer between 0 and 65535). * * @since 2.8 */
public class ValidPortValidator implements ConstraintValidator<ValidPort> { private static final Logger LOGGER = StatusLogger.getLogger(); private ValidPort annotation; @Override public void initialize(final ValidPort annotation) { this.annotation = annotation; } @Override public boolean isValid(final String name, final Object value) { if (value instanceof CharSequence) { return isValid(name, TypeConverters.convert(value.toString(), Integer.class, -1)); } if (!Integer.class.isInstance(value)) { LOGGER.error(annotation.message()); return false; } final int port = (int) value; if (port < 0 || port > 65535) { LOGGER.error(annotation.message()); return false; } return true; } }