Tazama Case and Investigation Management System

Tazama Case and Investigation Management System is a comprehensive solution for managing cases and investigations efficiently. This project aims to streamline workflows, improve collaboration, and provide robust tools for tracking, reporting, and analyzing case data.

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Tazama Case Management System – Authentication Flow

Overview

This project uses a secure, centralized authentication flow leveraging Keycloak, the Tazama Auth Service, and JWT-based authorization in the CMS backend.
Below is a sequence diagram and explanation of how authentication and authorization work in this system.

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Authentication Sequence Diagram

sequenceDiagram
    participant User as User (Frontend/API Client)
    participant AuthService as Tazama Auth Service
    participant Keycloak as Keycloak
    participant CMS as CMS Backend

    User->>AuthService: 1. POST /v1/auth/login (username, password)
    AuthService->>Keycloak: 2. Validate credentials
    alt Invalid credentials
        Keycloak-->>AuthService: Error (invalid)
        AuthService-->>User: 401 Unauthorized
    else Valid credentials
        Keycloak-->>AuthService: Success (user info)
        AuthService-->>User: 3. JWT Token (Tazama format)
        User->>CMS: 4. API Request with Authorization: Bearer <JWT>
        CMS->>CMS: 5. Verify JWT (using public key)
        CMS->>CMS: 6. Extract claims (role, permissions, tenantId)
        CMS->>CMS: 7. Enforce RBAC, tenant isolation, audit logging
        CMS-->>User: 8. Response (data or error)
    end

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A progressive Node.js framework for building efficient and scalable server-side applications.

Description

Nest framework TypeScript starter repository.

Project setup

$ npm install

Compile and run the project

# development
$ npm run start

# watch mode
$ npm run start:dev

# production mode
$ npm run start:prod

Run tests

# unit tests
$ npm run test

# e2e tests
$ npm run test:e2e

# test coverage
$ npm run test:cov

Deployment

When you're ready to deploy your NestJS application to production, there are some key steps you can take to ensure it runs as efficiently as possible. Check out the deployment documentation for more information.

If you are looking for a cloud-based platform to deploy your NestJS application, check out Mau, our official platform for deploying NestJS applications on AWS. Mau makes deployment straightforward and fast, requiring just a few simple steps:

$ npm install -g @nestjs/mau
$ mau deploy

With Mau, you can deploy your application in just a few clicks, allowing you to focus on building features rather than managing infrastructure.

Resources

Check out a few resources that may come in handy when working with NestJS:

• Visit the NestJS Documentation to learn more about the framework.
• For questions and support, please visit our Discord channel.
• To dive deeper and get more hands-on experience, check out our official video courses.
• Deploy your application to AWS with the help of NestJS Mau in just a few clicks.
• Visualize your application graph and interact with the NestJS application in real-time using NestJS Devtools.
• Need help with your project (part-time to full-time)? Check out our official enterprise support.
• To stay in the loop and get updates, follow us on X and LinkedIn.
• Looking for a job, or have a job to offer? Check out our official Jobs board.

Support

Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please read more here.

Stay in touch

• Author - Kamil Myśliwiec
• Website - https://nestjs.com
• Twitter - @nestframework

License

Nest is MIT licensed.