[Schema Change] Add gRPC channel to notify node subscribe MQ

[VanderChen]

No description provided.

[codecov-commenter]

Codecov Report

Merging #612 (1a219a5) into master (a78e1d4) will decrease coverage by 0.80%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #612      +/-   ##
============================================
- Coverage     32.77%   31.96%   -0.81%     
  Complexity     1248     1248              
============================================
  Files           522      525       +3     
  Lines         13111    13439     +328     
  Branches       1610     1657      +47     
============================================
- Hits           4297     4296       -1     
- Misses         8229     8558     +329     
  Partials        585      585              

Impacted Files	Coverage Δ	Complexity Δ
...alcor/elasticipmanager/dao/ElasticIpAllocator.java	63.53% <0.00%> (-0.28%)	48.00% <0.00%> (ø%)
...turewei/alcor/netwconfigmanager/util/DemoUtil.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...ei/alcor/netwconfigmanager/constant/Constants.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...i/alcor/netwconfigmanager/entity/ResourceMeta.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...lcor/netwconfigmanager/cache/VpcResourceCache.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...lcor/netwconfigmanager/entity/VpcResourceMeta.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...or/netwconfigmanager/cache/ResourceStateCache.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...twconfigmanager/util/NetworkConfigManagerUtil.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...configmanager/NetworkConfigManagerApplication.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...configmanager/cache/HostResourceMetadataCache.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
... and 6 more

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[xieus]

What does the key differ from topic?

[VanderChen]

The key is for key-shared mode in Pulsar. It's similar to the concept of a secondary topic in the message queue (e.g. key in Apache Pulsar, tag in RocketMQ). At the same time, this value can be set to null when it is not needed.

[xieus]

It would be great to put the comment of "Allow to set NULL when a secondary topic is not needed" for the key field. @VanderChen

[xieus]

LGTM.

@VanderChen I have one last minor comment. Please take a look and if you can fix it in your other PR, that would be great.