feat: config-server support https

Author: caojiajun

README.md

@@ -57,10 +57,10 @@ jdbc:mysql:lb:local://10.189.0.1:6000,10.189.0.2:6000,10.189.0.3:6000/mydatabase
 jdbc:mysql:lb:remote://config-server.xxx.com:8080/mydatabase?connectTimeout=5000&socketTimeout=10000&configServerApiKey=xxx&configServerSchema=im_user&logStats=true
 ```
 
-* `config-server.xxx.com:8080` 表示config-server的地址，需要host:port的格式，必填
+* `config-server.xxx.com:8080` 表示config-server的地址，需要host:port的格式，如果是443端口，则走https，否则，走http，必填
 * `configServerApiKey` 表示config-server的鉴权key，可选，取决于config-server是否开启了鉴权
 * `configServerSchema` 表示config-server的schema，必填
-* `configServerTimeout` 表示访问config-server的超时，单位毫秒，默认5000
+* `configServerTimeout` 表示访问config-server的超时，单位毫秒，可选，默认5000
 * `logStats` 表示是否打印统计日志，可选，默认false
 * `checkBalanceIntervalSeconds` 负载均衡定时任务的间隔，可选，默认10s
 * `checkHealthIntervalSeconds` 健康检查定时任务的间隔，可选，默认5s

lb-driver/src/main/java/com/netease/nim/lbd/RemoteSqlProxyProvider.java

@@ -135,7 +135,14 @@ private FetchResponse fetchSqlProxyList() {
             builder.addParam("md5", md5);
         }
         builder.addParam("schema", lbDriverUrl.getConfigServerSchema());
-        String fullUrl = "http://" + lbDriverUrl.getConfigServerHost() + ":" + lbDriverUrl.getConfigServerPort() + "/fetch_sql_proxy_list?" + builder.build();
+        String requestParams = builder.build();
+
+        String fullUrl;
+        if (lbDriverUrl.getConfigServerPort() == 443) {
+            fullUrl = "https://" + lbDriverUrl.getConfigServerHost() + ":" + lbDriverUrl.getConfigServerPort() + "/fetch_sql_proxy_list?" + requestParams;
+        } else {
+            fullUrl = "http://" + lbDriverUrl.getConfigServerHost() + ":" + lbDriverUrl.getConfigServerPort() + "/fetch_sql_proxy_list?" + requestParams;
+        }
 
         HttpURLConnection conn = null;
         try {
@@ -187,8 +194,12 @@ private FetchResponse fetchSqlProxyList() {
                     lbDriverUrl.getConfigServerHost() + ":" + lbDriverUrl.getConfigServerPort(), lbDriverUrl.getConfigServerSchema(), e);
             return null;
         } finally {
-            if (conn != null) {
-                conn.disconnect();
+            try {
+                if (conn != null) {
+                    conn.disconnect();
+                }
+            } catch (Exception e) {
+                logger.error("http connection disconnect error", e);
             }
         }
     }