Create AE/src/dest APIs to return 409 if entity already exists

[mocsharp]

Description

Fixes #180 .

Returns HTTP 409 Conflict if users try to add a listening AE title/DICOM source/ DICOM destination that already exists.

Status

Ready

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• All tests passed locally.
• Documentation comments included/updated.
• User guide updated.
• I have updated the changelog

[codecov]

Codecov Report

Merging #182 (bb3492f) into develop (fe56aca) will increase coverage by 0.03811%.
The diff coverage is 88.75000%.

@@                 Coverage Diff                 @@
##             develop        #182         +/-   ##
===================================================
+ Coverage   92.89748%   92.93559%   +0.03811%     
===================================================
  Files            262         263          +1     
  Lines          14699       14750         +51     
  Branches         787         785          -2     
===================================================
+ Hits           13655       13708         +53     
+ Misses           805         804          -1     
+ Partials         239         238          -1     

Flag	Coverage Δ
unittests	92.93559% <88.75000%> (+0.03811%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...InformaticsGateway/Common/ObjectExistsException.cs	25.00000% <25.00000%> (ø)
...icsGateway/Services/Http/MonaiAeTitleController.cs	91.37931% <75.00000%> (+0.30787%)	⬆️
...csGateway/Services/Http/SourceAeTitleController.cs	92.15686% <75.00000%> (+4.40175%)	⬆️
...eway/Services/Http/DestinationAeTitleController.cs	92.15686% <83.33333%> (+4.40175%)	⬆️
.../Services/Http/DestinationAeTitleControllerTest.cs	100.00000% <100.00000%> (ø)
...y/Test/Services/Http/MonaiAeTitleControllerTest.cs	100.00000% <100.00000%> (ø)
.../Test/Services/Http/SourceAeTitleControllerTest.cs	100.00000% <100.00000%> (ø)
...maticsGateway/Services/HealthLevel7/MllpService.cs	77.38095% <0.00000%> (-2.38095%)	⬇️
...ateway/Services/Connectors/DataRetrievalService.cs	80.36364% <0.00000%> (-0.72727%)	⬇️
... and 5 more

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[github-actions]

🎉 This issue has been resolved in version 0.3.2 🎉

The release is available on:

• GitHub Release