Azure functions service based implementation improvements

[xlight05]

Purpose

$Subject

Resolves #533
Resolves #532
Resolves #530
Resolves #529
Resolves #524

Goals

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Approach

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User stories

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Release note

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Documentation

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Training

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Certification

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Marketing

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Automation tests

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Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes/no
• Ran FindSecurityBugs plugin and verified report? yes/no
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes/no

Samples

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Related PRs

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Learning

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[codecov]

Codecov Report

Base: 66.32% // Head: 57.64% // Decreases project coverage by -8.67% ⚠️

Coverage data is based on head (4580f47) compared to base (4802947).
Patch coverage: 57.50% of modified lines in pull request are covered.

Additional details and impacted files

@@              Coverage Diff               @@
##             svc-impl     #534      +/-   ##
==============================================
- Coverage       66.32%   57.64%   -8.68%     
- Complexity        238      435     +197     
==============================================
  Files              43       74      +31     
  Lines            1256     2387    +1131     
  Branches          153      585     +432     
==============================================
+ Hits              833     1376     +543     
- Misses            335      851     +516     
- Partials           88      160      +72     

Impacted Files	Coverage Δ
.../java/org/ballerinax/azurefunctions/Constants.java	0.00% <ø> (ø)
...zurefunctions/service/http/HTTPTriggerBinding.java	67.37% <40.00%> (-0.26%)	⬇️
...nax/azurefunctions/AzureFunctionNameGenerator.java	91.11% <50.00%> (-4.13%)	⬇️
...g/ballerinax/azurefunctions/FunctionsArtifact.java	64.00% <50.00%> (-5.24%)	⬇️
...llerinax/azurefunctions/AzureFunctionModifier.java	83.07% <100.00%> (ø)
...rg/ballerinax/azurefunctions/tooling/Settings.java	100.00% <100.00%> (ø)
...dlib/azure/functions/NativeHttpToAzureAdaptor.java	79.06% <100.00%> (ø)
...ballerina/stdlib/azure/functions/ParamHandler.java	54.83% <100.00%> (ø)
.../functions/exceptions/InvalidPayloadException.java	100.00% <0.00%> (ø)
...b/azure/functions/bindings/input/InputBinding.java	100.00% <0.00%> (ø)
... and 29 more

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