public void doSubscribe(final URL url, final NotifyListener listener) {
String service = RedisRegistryUtil.toServicePath(url, root);
RedisRegistryNotifier notifier = notifiers.get(service);
if (notifier == null) {
RedisRegistryNotifier newNotifier = new RedisRegistryNotifier(service, this);
notifiers.putIfAbsent(service, newNotifier);
notifier = notifiers.get(service);
if (notifier == newNotifier) {
notifier.start();
}
}
boolean success = false;
RpcException exception = null;
for (Map.Entry<String, JedisPool> entry : jedisPools.entrySet()) {
JedisPool jedisPool = entry.getValue();
try {
Jedis jedis = jedisPool.getResource();
try {
if (service.endsWith(Constants.ANY_VALUE)) {
admin = true;
Set<String> keys = jedis.keys(service);
if (keys != null && keys.size() > 0) {
Map<String, Set<String>> serviceKeys = RedisRegistryUtil.getServiceKeys(keys, root);
for (Set<String> sk : serviceKeys.values()) {
doNotify(jedis, sk, url, Arrays.asList(listener));
}
}
} else {
doNotify(
jedis,
jedis.keys(service + Constants.PATH_SEPARATOR + Constants.ANY_VALUE),
url,
Arrays.asList(listener));
}
success = true;
break; // 只需读一个服务器的数据
} finally {
jedisPool.returnResource(jedis);
}
} catch (Throwable t) { // 尝试下一个服务器
exception =
new RpcException(
"Failed to subscribe service from redis registry. registry: "
+ entry.getKey()
+ ", service: "
+ url
+ ", cause: "
+ t.getMessage(),
t);
}
}
if (exception != null) {
if (success) {
logger.warn(exception.getMessage(), exception);
} else {
throw exception;
}
}
}
