Feature http xa

[JackBOBO]

1. add http xa pattern Support XA #68

[codecov-commenter]

Codecov Report

Merging #69 (9207895) into main (10272be) will decrease coverage by 5.29%.
The diff coverage is 15.52%.

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@@            Coverage Diff             @@
##             main      #69      +/-   ##
==========================================
- Coverage   76.28%   70.99%   -5.29%     
==========================================
  Files          41       44       +3     
  Lines        1754     1903     +149     
==========================================
+ Hits         1338     1351      +13     
- Misses        416      552     +136     

Impacted Files	Coverage Δ
src/Dtmcli/Xa/Xa.cs	0.00% <0.00%> (ø)
src/Dtmcli/Xa/XaGlobalTransaction.cs	0.00% <0.00%> (ø)
src/Dtmcli/Xa/XaLocalTransaction.cs	0.00% <0.00%> (ø)
src/DtmCommon/Constant.cs	100.00% <100.00%> (ø)
src/DtmCommon/Imp/DbSpecialDelegate.cs	100.00% <100.00%> (ø)
src/Dtmcli/DtmClient.cs	87.35% <100.00%> (-0.56%)	⬇️
src/Dtmcli/ServiceCollectionExtensions.cs	100.00% <100.00%> (ø)

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[yedf2]

For mysql version less than 8.0, connection should be closed after xa end, or else xa commit in another connection will not succeed. It is a bug of mysql, and is fixed in mysql 8

[JackBOBO]

For mysql version less than 8.0, connection should be closed after xa end, or else xa commit in another connection will not succeed. It is a bug of mysql, and is fixed in mysql 8

There is indeed this issue in versions below MySQL 8, and even after closing the connection after xa end or xa commit, the problem still persists. However, when I add pooling=false to the connection string, it seems to work fine. I suspect that the "MysqlConnector" connection pool cannot support this scenario.

[yedf2]

So for XA transaction, you may disable pool.

In the document of dtm, the performance of XA transaction are not high, so disable pooling should be OK

[catcherwong]

Can we merge this PR and release a new version now?

[JackBOBO]

Can we merge this PR and release a new version now?

Of course you can.