Updating Netty Logging to only display errors and default logging to debug

[saratvemulapalli]

Signed-off-by: Sarat Vemulapalli [email protected]

Description

Updating Netty logging to only print out errors.
Netty is using reflective access which is denied by default for Java > 8.
See: netty/netty#7817

As recommendation says, its just a warning but its not fatal problems for the application. For SDK we really dont care about Netty debug/trace logs, error should be good enough.

This PR also updates default logging to debug as trace is not really helping a human unless we really want to debug core problems.

Issues Resolved

Closes #180

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[codecov-commenter]

Codecov Report

Merging #181 (839d9a1) into main (8fbcc6e) will increase coverage by 0.93%.
The diff coverage is 75.00%.

@@             Coverage Diff              @@
##               main     #181      +/-   ##
============================================
+ Coverage     66.00%   66.94%   +0.93%     
- Complexity       96      103       +7     
============================================
  Files            25       24       -1     
  Lines           456      475      +19     
  Branches         13       25      +12     
============================================
+ Hits            301      318      +17     
+ Misses          147      141       -6     
- Partials          8       16       +8     

Impacted Files	Coverage Δ
...main/java/org/opensearch/sdk/TransportActions.java	81.81% <ø> (ø)
...main/java/org/opensearch/sdk/ExtensionsRunner.java	70.83% <50.00%> (+7.59%)	⬆️
src/main/java/org/opensearch/sdk/Extension.java	60.00% <100.00%> (+15.55%)	⬆️
...rch/sdk/handlers/ExtensionsInitRequestHandler.java	100.00% <100.00%> (ø)
...ch/sdk/sample/helloworld/rest/RestHelloAction.java	70.96% <0.00%> (-29.04%)	⬇️
...ain/java/org/opensearch/sdk/ExtensionSettings.java	88.88% <0.00%> (ø)
...java/org/opensearch/sdk/ExtensionRestResponse.java
...rch/sdk/handlers/ExtensionsRestRequestHandler.java	47.36% <0.00%> (+4.51%)	⬆️
...nsearch/sdk/handlers/OpensearchRequestHandler.java	66.66% <0.00%> (+6.66%)	⬆️
...c/main/java/org/opensearch/sdk/NettyTransport.java	100.00% <0.00%> (+7.14%)	⬆️
... and 2 more

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[dbwiddis]

I'd even be happy with INFO level logging, with instructions how to change it in the developer guide.

[saratvemulapalli]

I'd even be happy with INFO level logging, with instructions how to change it in the developer guide.

+1 We'll start with debug and we could move over to info eventually overtime.