HashedWheelTimer

[carryxyh]

HashedWheelTimer to check timeout future
The class about HashedWheelTimer is from netty which with header like :

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

It will decrease circulate times compared to the old way.

[codecov-io]

Codecov Report

Merging #1973 into master will increase coverage by 0.17%.
The diff coverage is 50.64%.

@@             Coverage Diff              @@
##             master    #1973      +/-   ##
============================================
+ Coverage     50.04%   50.22%   +0.17%     
- Complexity     4707     4746      +39     
============================================
  Files           562      563       +1     
  Lines         25213    25506     +293     
  Branches       4449     4508      +59     
============================================
+ Hits          12618    12810     +192     
- Misses        10688    10739      +51     
- Partials       1907     1957      +50

Impacted Files	Coverage Δ	Complexity Δ
...exchange/support/header/HeaderExchangeChannel.java	16.48% <0%> (ø)	6 <0> (ø)	⬇️
...ava/org/apache/dubbo/common/utils/StringUtils.java	81.59% <0%> (-2.36%)	113 <0> (ø)
...rg/apache/dubbo/common/timer/HashedWheelTimer.java	49.3% <49.3%> (ø)	16 <16> (?)
...dubbo/remoting/exchange/support/DefaultFuture.java	47.82% <94.44%> (+40.57%)	24 <2> (+22)	⬆️
...onfig/spring/extension/SpringExtensionFactory.java	73.07% <0%> (-11.54%)	8% <0%> (ø)
...e/dubbo/remoting/transport/netty/NettyChannel.java	57.5% <0%> (-8.75%)	19% <0%> (-2%)
...he/dubbo/remoting/transport/netty/NettyClient.java	72.88% <0%> (-8.48%)	12% <0%> (-1%)
...rpc/protocol/dubbo/telnet/InvokeTelnetHandler.java	51.89% <0%> (-3.8%)	11% <0%> (-2%)
...bo/remoting/transport/netty/NettyCodecAdapter.java	53.12% <0%> (-1.57%)	3% <0%> (ø)
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 705bf37...8ef5038. Read the comment docs.

[carryxyh]

ISSUE：
#1371

[cvictory]

I think we should add a class Named ClassUtils or use org.apache.commons.lang3.ClassUtils.

[beiwei30]

suggest to move this into org.apache.dubbo.common.utils.ClassHelper

[cvictory]

may be a innnerClass

[cvictory]

@carryxyh I have add some comment while I review your code. Please check it.

[carryxyh]

@cvictory
Ok, will check and fix it soon.