## Summary
*Replace this text with an explanation of what the changes are and how you implemented them. Can this impact any other parts of the codebase that we should keep in mind?*
## Test process
*How have you tested this (if applicable)?*
## Checklist
- [ ] This PR is linked to a **work item**
- [ ] I have performed **self-review** of the code
- [ ] I have written **tests** for any new functionality added with this PR
- [ ] I have updated the **documentation** if this PR changes or adds functionality
- [ ] I have written/updated **design docs** if this PR implements new functionality
- [ ] I have update the **change log**
- [ ] I have run **pre-commit** checks for code style
Updated pull_request_template.md
Related work items: #1866
Rename attributes like connected_link and connected_node to start with
an underscore.
This will prevent circular dependency and stack recursion depth error.
## Summary
Carrying on where Sunil left the task. Added more functionality to the DNS.
- DNS Server can keep a list of domain names that the DNS Client can request
- DNS Client has a cache of domain names that are valid from the DNS Server
## Test process
https://dev.azure.com/ma-dev-uk/PrimAITE/_git/PrimAITE/pullrequest/177?_a=files&path=/tests/unit_tests/_primaite/_simulator/_system/_services/test_dns.py
## Checklist
- [x] This PR is linked to a **work item**
- [x] I have performed **self-review** of the code
- [x] I have written **tests** for any new functionality added with this PR
- [X] I have updated the **documentation** if this PR changes or adds functionality
- [ ] I have written/updated **design docs** if this PR implements new functionality
- [X] I have update the **change log**
- [x] I have run **pre-commit** checks for code style
Related work items: #1752
## Summary
This pull request focuses on implementing key functionalities needed for network frame processing and database interactions. The primary changes are:
1. **Internal Frame Processing:** The logic has been implemented in various components like `NIC`, `Node`, `SessionManager`, and `SoftwareManager`. These changes enable the system to process incoming and outgoing network frames in a structured manner.
2. **Database Service and Client:** The `DatabaseService` simulates a SQL database server, while the `DatabaseClient` provides a client interface for connecting to this service. These functionalities have been built and integrated into the existing architecture.
3. **Networking and Communication:** Tests have been added to confirm that database queries can be sent over the network, demonstrating end-to-end functionality.
## Commits
- #1816 Simplified a bunch of stuff in the file system in prep for services and applications. Started adding the database logic. Waiting for the software manager/session manager work from another tick. Merge branch 'dev' into feature/1816_Database-Service-(Network-and-User-Interaction)
- #1816 Added the final pieces of the puzzle to get data up from NIC → session manager → software manager → service.
- #1816 DatabaseService now uses the send function when responding.
- #1816 Added database client. Installed the database client on the Web Server node in the UC2 network. Updated the integration test to query the DB server using the DB client.
- #1816 Added full documentation on the database client/server, and the internal frame processing process
- #1816 Fixed tests. Used node and link added number (id) in observation space.
## Test process
For testing these functionalities, the following steps were taken:
1. **Unit Tests:** Tests have been written to confirm that database queries can be sent over the network successfully.
2. **Integration Tests:** Manually tested the frame processing flow from NIC to Service/Application, ensuring the functionality behaves as expected.
3. **Database Queries** Executed sample SQL queries using the `DatabaseClient` to make sure it interacts correctly with the `DatabaseService`.
## Checklist
- [ ] This PR is linked to a **work item**
- [ ] I have performed **self-review** of the code
- [ ] I have written **tests** for any new functionality added with this PR
- [ ] I have updated the **documentation** if this PR changes or adds functionality
- [ ] I have written/updated **design docs** if this PR implements new functionality
- [ ] I have update the **change log**
- [ ] I have run **pre-commit** checks for code style
Related work items: #1816
## Summary
Implementation of the Data Manipulation Bot. This service sends a SQL query payload to the database server (or a given machine IP and port)
## Test process
Added a test
https://dev.azure.com/ma-dev-uk/PrimAITE/_git/PrimAITE/pullrequest/175?_a=files&path=/tests/unit_tests/_primaite/_simulator/_system/_services/_red_services/test_data_manipulator_service.py
## Checklist
- [x] This PR is linked to a **work item**
- [x] I have performed **self-review** of the code
- [x] I have written **tests** for any new functionality added with this PR
- [ ] I have updated the **documentation** if this PR changes or adds functionality
- [ ] I have written/updated **design docs** if this PR implements new functionality
- [X] I have update the **change log**
- [x] I have run **pre-commit** checks for code style
Related work items: #1814
