@Test
public void commandFailsDuringDecode() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
RedisChannelWriter<String, String> channelWriter =
getRedisChannelHandler(connection).getChannelWriter();
RedisCommands<String, String> verificationConnection = client.connect().sync();
connection.set(key, "1");
AsyncCommand<String, String, String> command =
new AsyncCommand(
new Command<>(
CommandType.INCR, new StatusOutput<>(CODEC), new CommandArgs<>(CODEC).addKey(key)));
channelWriter.write(command);
assertThat(command.await(2, TimeUnit.SECONDS)).isTrue();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isTrue();
assertThat(getException(command)).isInstanceOf(IllegalStateException.class);
assertThat(verificationConnection.get(key)).isEqualTo("2");
assertThat(connection.get(key)).isEqualTo("2");
connection.close();
verificationConnection.close();
}
@Test
public void noCommandsExecutedAfterConnectionIsDisconnected() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
connection.quit();
Wait.untilTrue(() -> !connection.isOpen()).waitOrTimeout();
try {
connection.incr(key);
} catch (RedisException e) {
assertThat(e).isInstanceOf(RedisException.class);
}
connection.close();
RedisCommands<String, String> connection2 = client.connect().sync();
connection2.quit();
try {
Wait.untilTrue(() -> !connection.isOpen()).waitOrTimeout();
connection2.incr(key);
} catch (Exception e) {
assertThat(e).isExactlyInstanceOf(RedisException.class).hasMessageContaining("not connected");
}
connection2.close();
}
@Test
public void commandRetriedChannelClosesWhileFlush() throws Exception {
assumeTrue(Version.identify().get("netty-transport").artifactVersion().startsWith("4.0.2"));
RedisCommands<String, String> connection = client.connect().sync();
RedisCommands<String, String> verificationConnection = client.connect().sync();
RedisChannelWriter<String, String> channelWriter =
getRedisChannelHandler(connection).getChannelWriter();
connection.set(key, "1");
assertThat(verificationConnection.get(key)).isEqualTo("1");
final CountDownLatch block = new CountDownLatch(1);
ConnectionWatchdog connectionWatchdog =
Connections.getConnectionWatchdog(connection.getStatefulConnection());
AsyncCommand<String, String, Object> command = getBlockOnEncodeCommand(block);
channelWriter.write(command);
connectionWatchdog.setReconnectSuspended(true);
Channel channel = getChannel(getRedisChannelHandler(connection));
channel.unsafe().disconnect(channel.newPromise());
assertThat(channel.isOpen()).isFalse();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isFalse();
block.countDown();
assertThat(command.await(2, TimeUnit.SECONDS)).isFalse();
connectionWatchdog.setReconnectSuspended(false);
connectionWatchdog.scheduleReconnect();
assertThat(command.await(2, TimeUnit.SECONDS)).isTrue();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isTrue();
assertThat(verificationConnection.get(key)).isEqualTo("2");
assertThat(getQueue(getRedisChannelHandler(connection))).isEmpty();
assertThat(getCommandBuffer(getRedisChannelHandler(connection))).isEmpty();
connection.close();
verificationConnection.close();
}
@Test
public void connectionIsConnectedAfterConnect() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
assertThat(getConnectionState(getRedisChannelHandler(connection)));
connection.close();
}
@Test
public void basicOperations() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
connection.set(key, "1");
assertThat(connection.get("key")).isEqualTo("1");
connection.close();
}
@Test
public void noReconnectHandler() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
assertThat(getHandler(RedisChannelWriter.class, getRedisChannelHandler(connection)))
.isNotNull();
assertThat(getHandler(ConnectionWatchdog.class, getRedisChannelHandler(connection))).isNull();
connection.close();
}
@Test
public void noBufferedCommandsAfterExecute() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
connection.set(key, "1");
assertThat(getQueue(getRedisChannelHandler(connection))).isEmpty();
assertThat(getCommandBuffer(getRedisChannelHandler(connection))).isEmpty();
connection.close();
}
@Before
public void before() throws Exception {
client.setOptions(new ClientOptions.Builder().autoReconnect(false).build());
// needs to be increased on slow systems...perhaps...
client.setDefaultTimeout(3, TimeUnit.SECONDS);
RedisCommands<String, String> connection = client.connect().sync();
connection.flushall();
connection.flushdb();
connection.close();
}
@Test
public void reconnectIsActiveHandler() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
ConnectionWatchdog connectionWatchdog =
Connections.getConnectionWatchdog(connection.getStatefulConnection());
assertThat(connectionWatchdog).isNotNull();
assertThat(connectionWatchdog.isListenOnChannelInactive()).isTrue();
assertThat(connectionWatchdog.isReconnectSuspended()).isFalse();
connection.close();
}
@Test
public void commandCancelledOverSyncAPIAfterConnectionIsDisconnected() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
RedisCommands<String, String> verificationConnection = client.connect().sync();
connection.set(key, "1");
ConnectionWatchdog connectionWatchdog =
Connections.getConnectionWatchdog(connection.getStatefulConnection());
connectionWatchdog.setListenOnChannelInactive(false);
connection.quit();
Wait.untilTrue(() -> !connection.isOpen()).waitOrTimeout();
try {
connection.incr(key);
} catch (RedisException e) {
assertThat(e).isExactlyInstanceOf(RedisCommandTimeoutException.class);
}
assertThat(verificationConnection.get("key")).isEqualTo("1");
assertThat(getQueue(getRedisChannelHandler(connection))).isEmpty();
assertThat(getCommandBuffer(getRedisChannelHandler(connection)).size()).isGreaterThan(0);
connectionWatchdog.setListenOnChannelInactive(true);
connectionWatchdog.scheduleReconnect();
while (!getCommandBuffer(getRedisChannelHandler(connection)).isEmpty()
|| !getQueue(getRedisChannelHandler(connection)).isEmpty()) {
Thread.sleep(10);
}
assertThat(connection.get(key)).isEqualTo("1");
connection.close();
verificationConnection.close();
}
@Test
public void commandNotExecutedChannelClosesWhileFlush() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
RedisCommands<String, String> verificationConnection = client.connect().sync();
RedisChannelWriter<String, String> channelWriter =
getRedisChannelHandler(connection).getChannelWriter();
connection.set(key, "1");
assertThat(verificationConnection.get(key)).isEqualTo("1");
final CountDownLatch block = new CountDownLatch(1);
AsyncCommand<String, String, Object> command =
new AsyncCommand<String, String, Object>(
new Command<>(
CommandType.INCR, new IntegerOutput(CODEC), new CommandArgs<>(CODEC).addKey(key))) {
@Override
public void encode(ByteBuf buf) {
try {
block.await();
} catch (InterruptedException e) {
}
super.encode(buf);
}
};
channelWriter.write(command);
Channel channel = getChannel(getRedisChannelHandler(connection));
channel.unsafe().disconnect(channel.newPromise());
assertThat(channel.isOpen()).isFalse();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isFalse();
block.countDown();
assertThat(command.await(2, TimeUnit.SECONDS)).isTrue();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isTrue();
assertThat(verificationConnection.get(key)).isEqualTo("1");
assertThat(getQueue(getRedisChannelHandler(connection))).isEmpty();
assertThat(getCommandBuffer(getRedisChannelHandler(connection))).isEmpty();
connection.close();
}
@Test
public void commandIsExecutedOnce() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
connection.set(key, "1");
connection.incr(key);
assertThat(connection.get(key)).isEqualTo("2");
connection.incr(key);
assertThat(connection.get(key)).isEqualTo("3");
connection.incr(key);
assertThat(connection.get(key)).isEqualTo("4");
connection.close();
}
@Test
public void commandNotExecutedFailsOnEncode() throws Exception {
RedisCommands<String, String> connection = client.connect().sync();
RedisChannelWriter<String, String> channelWriter =
getRedisChannelHandler(connection).getChannelWriter();
connection.set(key, "1");
AsyncCommand<String, String, String> working =
new AsyncCommand<>(
new Command<String, String, String>(
CommandType.INCR,
new IntegerOutput(CODEC),
new CommandArgs<String, String>(CODEC).addKey(key)));
channelWriter.write(working);
assertThat(working.await(2, TimeUnit.SECONDS)).isTrue();
assertThat(connection.get(key)).isEqualTo("2");
AsyncCommand<String, String, Object> command =
new AsyncCommand<String, String, Object>(
new Command<String, String, Object>(
CommandType.INCR,
new IntegerOutput(CODEC),
new CommandArgs<String, String>(CODEC).addKey(key))) {
@Override
public void encode(ByteBuf buf) {
throw new IllegalStateException("I want to break free");
}
};
channelWriter.write(command);
assertThat(command.await(2, TimeUnit.SECONDS)).isTrue();
assertThat(command.isCancelled()).isFalse();
assertThat(command.isDone()).isTrue();
assertThat(getException(command)).isInstanceOf(EncoderException.class);
assertThat(connection.get(key)).isEqualTo("2");
assertThat(getQueue(getRedisChannelHandler(connection))).isEmpty();
assertThat(getCommandBuffer(getRedisChannelHandler(connection))).isEmpty();
connection.close();
}
@Test
public void retryAfterConnectionIsDisconnected() throws Exception {
RedisAsyncConnection<String, String> connection = client.connectAsync();
RedisChannelHandler<String, String> redisChannelHandler =
(RedisChannelHandler) connection.getStatefulConnection();
RedisCommands<String, String> verificationConnection = client.connect().sync();
connection.set(key, "1").get();
ConnectionWatchdog connectionWatchdog =
Connections.getConnectionWatchdog(connection.getStatefulConnection());
connectionWatchdog.setListenOnChannelInactive(false);
connection.quit();
while (connection.isOpen()) {
Thread.sleep(100);
}
assertThat(connection.incr(key).await(1, TimeUnit.SECONDS)).isFalse();
assertThat(verificationConnection.get("key")).isEqualTo("1");
assertThat(getQueue(redisChannelHandler)).isEmpty();
assertThat(getCommandBuffer(redisChannelHandler).size()).isGreaterThan(0);
connectionWatchdog.setListenOnChannelInactive(true);
connectionWatchdog.scheduleReconnect();
while (!getCommandBuffer(redisChannelHandler).isEmpty()
|| !getQueue(redisChannelHandler).isEmpty()) {
Thread.sleep(10);
}
assertThat(connection.get(key).get()).isEqualTo("2");
assertThat(verificationConnection.get(key)).isEqualTo("2");
connection.close();
verificationConnection.close();
}