Add keycloak as oauth2 provider

[amend07]

OAuth2 Keycloak Integration for Apache CloudStack

This project provides an integration between Keycloak, an open-source Identity and Access Management solution, and Apache CloudStack, a popular open-source cloud computing software.

Features
OAuth2 Authentication: Seamlessly authenticate CloudStack users via Keycloak.
Single Sign-On (SSO): Leverage Keycloak's SSO capabilities for a unified login experience across multiple services.
User Management: Centralize user management with Keycloak, simplifying administration and enhancing security.
Customizable Configuration: Easily configure Keycloak settings within CloudStack to fit your specific environment and needs.
Prerequisites

• Apache CloudStack 4.15 or later
• Keycloak 24 or later
• Java 8 or later

Configure Keycloak:

Set up a new client in Keycloak for CloudStack.
Configure roles, users, and mappings as required.
Configure CloudStack:

Update the CloudStack configuration to use Keycloak for authentication.
Restart CloudStack management server if necessary.

Contributing
We welcome contributions to enhance this integration. Please fork the repository, create a feature branch, and submit a pull request.

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache CloudStack community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/cloudstack/blob/main/CONTRIBUTING.md)
Here are some useful points:

• In case of a new feature add useful documentation (raise doc PR at https://github.com/apache/cloudstack-documentation)
• Be patient and persistent. It might take some time to get a review or get the final approval from the committers.
• Pay attention to the quality of your code, ensure tests are passing and your PR doesn't have conflicts.
• Please follow ASF Code of Conduct for all communication including (but not limited to) comments on Pull Requests, Issues, Mailing list and Slack.
• Be sure to read the CloudStack Coding Conventions.
  Apache CloudStack is a community-driven project and together we are making it better 🚀.
  In case of doubts contact the developers at:
  Mailing List: dev@cloudstack.apache.org (https://cloudstack.apache.org/mailing-lists.html)
  Slack: https://apachecloudstack.slack.com/

[shwstppr]

@amend07 can you please add license?

[DaanHoogland]

Suggested change

	package org.apache.cloudstack.oauth2.keycloak;
	// Licensed to the Apache Software Foundation (ASF) under one
	// or more contributor license agreements. See the NOTICE file
	// distributed with this work for additional information
	// regarding copyright ownership. The ASF licenses this file
	// to you under the Apache License, Version 2.0 (the
	// "License"); you may not use this file except in compliance
	// with the License. You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing,
	// software distributed under the License is distributed on an
	// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	// KIND, either express or implied. See the License for the
	// specific language governing permissions and limitations
	// under the License.
	package org.apache.cloudstack.oauth2.keycloak;

[harikrishna-patnala]

great to see the changes for the integration of keycloak @amend07, thank you.

I'll test this once. Do you have plans to extend this support in UI also ?

[amend07]

@harikrishna-patnala I am waiting for your response.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 4.19%. Comparing base (a9caee3) to head (9e53596).
Report is 28 commits behind head on main.

❗ Current head 9e53596 differs from pull request most recent head 0d3489e

Please upload reports for the commit 0d3489e to get more accurate results.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #9168       +/-   ##
============================================
- Coverage     15.32%   4.19%   -11.14%     
============================================
  Files          5459     369     -5090     
  Lines        477298   30277   -447021     
  Branches      60202    5357    -54845     
============================================
- Hits          73135    1269    -71866     
+ Misses       396084   28864   -367220     
+ Partials       8079     144     -7935     

Flag	Coverage Δ
uitests	4.19% <ø> (ø)
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[harikrishna-patnala]

@harikrishna-patnala I am waiting for your response.

Do you have plans to extend this support in UI also ?

[amend07]

of course I will. why don't we add as an option with google and github dropdown list.

[harikrishna-patnala]

@amend07 there are build failures, can you please check and update the PR

[harikrishna-patnala]

of course I will. why don't we add as an option with google and github dropdown list.

yes we can do that

[github-actions]

This pull request has merge conflicts. Dear author, please fix the conflicts and sync your branch with the base branch.

[amend07]

@harikrishna-patnala check it out now.

[amend07]

@harikrishna-patnala I'm waiting your response

[shwstppr]

@amend07 there are merge conflicts in the PR. Can you please resolve them?

[rohityadavcloud]

@amend07 there are merge conflicts in the PR. Can you please resolve them and also address any outstanding comments?