/**
 * 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 com.alibaba.jstorm.ui.tags;

import com.alibaba.jstorm.utils.NetWorkUtils;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import java.io.IOException;

/**
 * @author Jark (wuchong.wc@alibaba-inc.com)
 */
public class HostTag extends SimpleTagSupport {

    private String ip;

    public void setIp(String ip) {
        this.ip = ip;
    }

    @Override
    public void doTag() throws JspException {
        JspWriter out = getJspContext().getOut();
        try {
            out.write(NetWorkUtils.ip2Host(ip));
        } catch (IOException e) {
            throw new JspException("Error: " + e.getMessage());
        }
    }
}