/**
* $Id: TopAddressing.java 1831 2013-05-16 01:39:51Z shijia.wxr $
*/
package com.alibaba.rocketmq.common.namesrv;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.alibaba.rocketmq.common.MixAll;
import com.alibaba.rocketmq.common.constant.LoggerName;
import com.alibaba.rocketmq.common.help.FAQUrl;
import com.alibaba.rocketmq.common.utils.HttpTinyClient;
import com.alibaba.rocketmq.common.utils.HttpTinyClient.HttpResult;
/**
* 寻址服务
*
* @author shijia.wxr<vintage.wang@gmail.com>
* @author manhong.yqd<jodie.yqd@gmail.com>
*/
public class TopAddressing {
private static final Logger log = LoggerFactory.getLogger(LoggerName.CommonLoggerName);
private String nsAddr;
private String wsAddr;
public TopAddressing(final String wsAddr) {
this.wsAddr = wsAddr;
}
private static String clearNewLine(final String str) {
String newString = str.trim();
int index = newString.indexOf("\r");
if (index != -1) {
return newString.substring(0, index);
}
index = newString.indexOf("\n");
if (index != -1) {
return newString.substring(0, index);
}
return newString;
}
public final String fetchNSAddr() {
try {
HttpResult result = HttpTinyClient.httpGet(this.wsAddr, null, null, "UTF-8", 3000);
if (200 == result.code) {
String responseStr = result.content;
if (responseStr != null) {
return clearNewLine(responseStr);
}
else {
log.error("fetch nameserver address is null");
}
}
else {
log.error("fetch nameserver address failed. statusCode={}", result.code);
}
}
catch (IOException e) {
log.error("fetchZKAddr exception", e);
}
String errorMsg =
"connect to " + MixAll.WS_ADDR + " failed, maybe the domain name " + MixAll.WS_DOMAIN_NAME
+ " not bind in /etc/hosts";
errorMsg += FAQUrl.suggestTodo(FAQUrl.NAME_SERVER_ADDR_NOT_EXIST_URL);
log.warn(errorMsg);
System.out.println(errorMsg);
return null;
}
public String getNsAddr() {
return nsAddr;
}
public void setNsAddr(String nsAddr) {
this.nsAddr = nsAddr;
}
}