add sequencer of mongo

[LXPWing]

What this PR does:
add sequencer of mongo #149

[codecov]

Codecov Report

Merging #376 (9794d2a) into main (d75608f) will increase coverage by 0.45%.
The diff coverage is 51.78%.

@@            Coverage Diff             @@
##             main     #376      +/-   ##
==========================================
+ Coverage   54.26%   54.72%   +0.45%     
==========================================
  Files         108      108              
  Lines        5921     5972      +51     
==========================================
+ Hits         3213     3268      +55     
+ Misses       2380     2365      -15     
- Partials      328      339      +11     

Impacted Files	Coverage Δ
components/lock/mongo/mongo_lock.go	58.82% <0.00%> (+3.26%)	⬆️
components/pkg/utils/mongo.go	0.00% <0.00%> (ø)
components/sequencer/mongo/mongo_sequencer.go	61.05% <61.05%> (ø)
components/rpc/invoker/mosn/channel/xchannel.go	80.64% <0.00%> (-3.23%)	⬇️
components/pkg/mock/mongo_lock_mock.go

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[seeflood]

Thanks for your contribution!
The binary file demo/configuration/apollo/apolloClientDemo shouldn't be added. You can add it into .gitignore

[seeflood]

Could u help add documents for mongodb lock and mongodb sequencer ? You can take consul lock chinese doc and consul lock english doc as examples.

@ZLBer @whalesongAndLittleFish @stulzq Could you help review this PR in detail ? Thanks!

[LXPWing]

@seeflood I need to take an exam in the next few days, and I'll be adding documents for mongodb lock and mongodb sequencer over the weekend.

[seeflood]

@LXPWing Wish you success in your exam ! 青春 is so beautiful 😢

[LXPWing]

Hi @seeflood I don't understand why codecov/project is wrong and I should do

[ZLBer]

@seeflood some bugs of codecov?

[seeflood]

Sorry I was on a vacation and just came back :)
I think there is some nondeterminacy in xchannel_test.go:

We can ignore it and review other code

[ZLBer]

LGTM

[LXPWing]

Hi @seeflood Do I need to modify components/rpc/invoker/mosn/channel/xchannel.go ?

[seeflood]

@LXPWing About the codecov warning:

1. Currently your mock code in components/pkg/utils/mongo_sequencer_mock.go is counted in the codecov statistics, which is not necessary ?
   So you can move the mocking code in this file to a new directory like components/pkg/mock,and then add this mock directory in the ignore list in codecov.yml
2. Besides, you can add some tests for the code affected by this PR,e.g. mongo_sequencer.go or mongo.go

[zhenjunMa]

@LXPWing About the codecov warning:

1. Currently your mock code in components/pkg/utils/mongo_sequencer_mock.go is counted in the codecov statistics, which is not necessary ?
   So you can move the mocking code in this file to a new directory like components/pkg/mock,and then add this mock directory in the ignore list in codecov.yml
2. Besides, you can add some tests for the code affected by this PR,e.g. mongo_sequencer.go or mongo.go

@LXPWing I have reviewed this PR, please fix the codecov problem as above, then we will merged, thanks.

fixed

[zhenjunMa]

LGTM, thanks!

[seeflood]

lgtm

[seeflood]

Thanks for your contribution !