feat: Auto-restart if the configuration file changed

[haoel]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.19 ⚠️

Comparison is base (caaf586) 99.68% compared to head (476796f) 99.49%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #332      +/-   ##
==========================================
- Coverage   99.68%   99.49%   -0.19%     
==========================================
  Files          83       80       -3     
  Lines        5643     5590      -53     
==========================================
- Hits         5625     5562      -63     
- Misses         12       22      +10     
  Partials        6        6              

Impacted Files	Coverage Δ
global/global.go	100.00% <ø> (ø)
conf/conf.go	97.06% <100.00%> (+0.33%)	⬆️

... and 4 files with indirect coverage changes

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[samanhappy]

There is a error log during restarting, is it expected?
ERRO[2023-04-27T18:11:38+08:00] [Web] HTTP server error: accept tcp [::]:8181: use of closed network connection

[haoel]

There is a error log during restarting, is it expected? ERRO[2023-04-27T18:11:38+08:00] [Web] HTTP server error: accept tcp [::]:8181: use of closed network connection

if this message is appeared around the following message, it should be fine

INFO[2023-04-27T19:01:49+08:00] !!! RECEIVED THE SIGTERM EXIT SIGNAL, EXITING... !!! 
ERRO[2023-04-27T19:01:49+08:00] [Web] HTTP server error: accept tcp 127.0.0.1:8181: use of closed network connection 
INFO[2023-04-27T19:01:49+08:00] [Web] HTTP server is shutdown  

[haoel]

@samanhappy I use the http.Server.Shutdown() instead the Close(), and deal with the error ErrServerClosed , I think this time I use the correct way to shutdown the HTTP Server.