static Map<String, String> appendMethodsToUrls(
Map<String, String> serviceUrls, Map<String, Set<String>> url2Methods) {
// 为URL上加上方法参数
Map<String, String> results = new HashMap<String, String>();
for (Map.Entry<String, Set<String>> entry : url2Methods.entrySet()) {
String url = entry.getKey();
String query = serviceUrls.get(url);
Set<String> methodNames = entry.getValue();
if (methodNames != null && methodNames.size() > 0) {
String ms = StringUtils.join(methodNames.toArray(new String[0]), ParseUtils.METHOD_SPLIT);
query = ParseUtils.replaceParameter(query, "methods", ms);
}
results.put(url, query);
}
return results;
}
/** 创建新连接. */
private ExchangeClient initClient(URL url) {
// 指定自己的exchanger
url = url.addParameterIfAbsent(Constants.EXCHANGER_KEY, HeaderExchanger2.NAME);
// client type setting.
url =
url.addParameterIfAbsent(
Constants.CLIENT_KEY, url.getParameter(Constants.SERVER_KEY, NettyTransporter2.NAME));
// check client type
String str =
url.getParameter(
Constants.CLIENT_KEY, url.getParameter(Constants.SERVER_KEY, NettyTransporter2.NAME));
// BIO存在严重性能问题，暂时不允许使用
if (str != null
&& str.length() > 0
&& !ExtensionLoader.getExtensionLoader(Transporter.class).hasExtension(str)) {
throw new RpcException(
"Unsupported client type: "
+ str
+ ","
+ " supported client type is "
+ StringUtils.join(
ExtensionLoader.getExtensionLoader(Transporter.class).getSupportedExtensions(),
" "));
}
ExchangeClient client;
try {
// 设置连接应该是lazy的
if (url.getParameter(Constants.LAZY_CONNECT_KEY, false)) {
client = new LazyConnectExchangeClient(url, requestHandler);
} else {
client = Exchangers.connect(url, requestHandler);
}
} catch (RemotingException e) {
throw new RpcException(
"Fail to create remoting client for service(" + url + "): " + e.getMessage(), e);
}
return client;
}
