@SuppressWarnings("unchecked")
@Test
public void testRpcException() {
Logger logger = EasyMock.createMock(Logger.class);
RpcContext.getContext().setRemoteAddress("127.0.0.1", 1234);
RpcException exception = new RpcException("TestRpcException");
logger.error(
EasyMock.eq(
"Got unchecked and undeclared exception which called by 127.0.0.1. service: "
+ DemoService.class.getName()
+ ", method: sayHello, exception: "
+ RpcException.class.getName()
+ ": TestRpcException"),
EasyMock.eq(exception));
ExceptionFilter exceptionFilter = new ExceptionFilter(logger);
RpcInvocation invocation =
new RpcInvocation("sayHello", new Class<?>[] {String.class}, new Object[] {"world"});
Invoker<DemoService> invoker = EasyMock.createMock(Invoker.class);
EasyMock.expect(invoker.getInterface()).andReturn(DemoService.class);
EasyMock.expect(invoker.invoke(EasyMock.eq(invocation))).andThrow(exception);
EasyMock.replay(logger, invoker);
try {
exceptionFilter.invoke(invoker, invocation);
} catch (RpcException e) {
assertEquals("TestRpcException", e.getMessage());
}
EasyMock.verify(logger, invoker);
RpcContext.removeContext();
}
/** Empty notify cause forbidden, non-empty notify cancels forbidden state */
@Test
public void testEmptyNotifyCauseForbidden() {
RegistryDirectory registryDirectory = getRegistryDirectory();
List invokers = null;
List<URL> serviceUrls = new ArrayList<URL>();
registryDirectory.notify(serviceUrls);
RpcInvocation inv = new RpcInvocation();
try {
invokers = registryDirectory.list(inv);
} catch (RpcException e) {
Assert.assertEquals(RpcException.FORBIDDEN_EXCEPTION, e.getCode());
Assert.assertEquals(false, registryDirectory.isAvailable());
}
serviceUrls.add(SERVICEURL.addParameter("methods", "getXXX1"));
serviceUrls.add(SERVICEURL2.addParameter("methods", "getXXX1,getXXX2"));
serviceUrls.add(SERVICEURL3.addParameter("methods", "getXXX1,getXXX2,getXXX3"));
registryDirectory.notify(serviceUrls);
inv.setMethodName("getXXX2");
invokers = registryDirectory.list(inv);
Assert.assertEquals(true, registryDirectory.isAvailable());
Assert.assertEquals(2, invokers.size());
}
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;
}
}
}
protected RpcException getRpcException(
Class<?> type, URL url, Invocation invocation, Throwable e) {
RpcException re =
new RpcException(
"Failed to invoke remote service: "
+ type
+ ", method: "
+ invocation.getMethodName()
+ ", cause: "
+ e.getMessage(),
e);
re.setCode(getErrorCode(e));
return re;
}
public void doRegister(URL url) {
String key = RedisRegistryUtil.toCategoryPath(url, root);
String value = url.toFullString();
String expire = String.valueOf(System.currentTimeMillis() + expirePeriod);
boolean success = false;
RpcException exception = null;
for (Map.Entry<String, JedisPool> entry : jedisPools.entrySet()) {
JedisPool jedisPool = entry.getValue();
try {
Jedis jedis = jedisPool.getResource();
try {
jedis.hset(key, value, expire);
jedis.publish(key, Constants.REGISTER);
success = true;
if (!replicate) {
break; // 如果服务器端已同步数据，只需写入单台机器
}
} finally {
jedisPool.returnResource(jedis);
}
} catch (Throwable t) {
exception =
new RpcException(
"Failed to register service to redis registry. registry: "
+ entry.getKey()
+ ", service: "
+ url
+ ", cause: "
+ t.getMessage(),
t);
}
}
if (exception != null) {
if (success) {
logger.warn(exception.getMessage(), exception);
} else {
throw exception;
}
}
}
// forbid
private void testforbid(RegistryDirectory registryDirectory) {
invocation = new RpcInvocation();
List<URL> serviceUrls = new ArrayList<URL>();
serviceUrls.add(
new URL(
Constants.EMPTY_PROTOCOL,
Constants.ANYHOST_VALUE,
0,
service,
Constants.CATEGORY_KEY,
Constants.PROVIDERS_CATEGORY));
registryDirectory.notify(serviceUrls);
Assert.assertEquals(
"invokers size=0 ,then the registry directory is not available",
false,
registryDirectory.isAvailable());
try {
registryDirectory.list(invocation);
fail("forbid must throw RpcException");
} catch (RpcException e) {
Assert.assertEquals(RpcException.FORBIDDEN_EXCEPTION, e.getCode());
}
}
private Result wrapBreakerInvoke(Invoker<?> invoker, Invocation invocation) throws RpcException {
// 首先检查是否需要进入服务降级流程
if (checkNeedCircuitBreak(invoker, invocation)) {
logger.info(
"[{}] activate the circuit break for url [{}],invoke method [{}]",
localHost,
invoker.getUrl(),
invocation.getMethodName());
// 进入服务降级
return doCircuitBreak(invoker, invocation);
}
try {
Result result = invoker.invoke(invocation);
// 将该服务从服务降级中恢复出来
toBeNormal(invoker, invocation);
return result;
} catch (RpcException e) {
// 如果是请求超时或者网络异常，进行异常统计
if (!e.isBiz()) {
caughtException(invoker, invocation, e);
}
throw e;
}
}
/**
* When destroying, RegistryDirectory should: 1. be disconnected from Registry 2. destroy all
* invokers
*/
@Test
public void testDestroy() {
RegistryDirectory registryDirectory = getRegistryDirectory();
List<URL> serviceUrls = new ArrayList<URL>();
serviceUrls.add(SERVICEURL.addParameter("methods", "getXXX1"));
serviceUrls.add(SERVICEURL2.addParameter("methods", "getXXX1,getXXX2"));
serviceUrls.add(SERVICEURL3.addParameter("methods", "getXXX1,getXXX2,getXXX3"));
registryDirectory.notify(serviceUrls);
List<Invoker> invokers = registryDirectory.list(invocation);
Assert.assertEquals(true, registryDirectory.isAvailable());
Assert.assertEquals(true, invokers.get(0).isAvailable());
registryDirectory.destroy();
Assert.assertEquals(false, registryDirectory.isAvailable());
Assert.assertEquals(false, invokers.get(0).isAvailable());
registryDirectory.destroy();
Map<String, List<Invoker<RegistryDirectoryTest>>> methodInvokerMap =
registryDirectory.getMethodInvokerMap();
Map<String, Invoker<RegistryDirectoryTest>> urlInvokerMap =
registryDirectory.getUrlInvokerMap();
Assert.assertTrue(methodInvokerMap == null);
Assert.assertEquals(0, urlInvokerMap.size());
// List<U> urls = mockRegistry.getSubscribedUrls();
RpcInvocation inv = new RpcInvocation();
try {
registryDirectory.list(inv);
fail();
} catch (RpcException e) {
Assert.assertTrue(e.getMessage().contains("already destroyed"));
}
}
