# ramijaber4/order-management architecture

> Architecture diagram of the GitHub repository ramijaber4/order-management, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-15). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/ramijaber4/order-management
- Repository: https://github.com/ramijaber4/order-management

## Overview

This repository combines an authenticated order-management API with a PostgreSQL sales-analytics ETL. The main user workflow is registering or logging in, browsing products, and submitting a customer-owned order; order creation validates and locks inventory, then commits the order, items, and stock changes together. A separate analytics workflow reads sales data and publishes full or incremental results, with checkpoints and run history. The API and analytics source are documented as able to use the same or separate databases. Some capabilities, including product/customer service internals, are represented from README and index references rather than inspected excerpts.

Main entry points: [`app/api/routes.py`](https://github.com/ramijaber4/order-management/blob/main/app/api/routes.py) (API routes), [`etl_analytics/pipeline.py`](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/pipeline.py) (Incremental pipeline), [`etl_analytics/daily_pipeline.py`](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/daily_pipeline.py) (Daily pipeline), [`app/main.py`](https://github.com/ramijaber4/order-management/blob/main/app/main.py) (FastAPI entry)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["API and access"]
  node_api_entry["FastAPI entry<br/>[main.py]"]
  node_routes["API routes<br/>[routes.py]"]
  node_auth["Authentication<br/>[auth.py]"]
  node_contracts["API contracts<br/>[schemas.py]"]
end

subgraph group_commerce["Order domain"]
  node_customers["Customer service<br/>[customers.py]"]
  node_products["Product service<br/>[products.py]"]
  node_orders["Order service<br/>[orders.py]"]
  node_domain_models["Commerce models<br/>[models.py]"]
end

subgraph group_analytics["Sales analytics"]
  node_etl_runner["ETL command runner<br/>[run.py]"]
  node_etl_config["ETL configuration<br/>[config.py]"]
  node_incremental_pipeline["Incremental pipeline<br/>[pipeline.py]"]
  node_daily_pipeline["Daily pipeline<br/>[daily_pipeline.py]"]
  node_sales_extract["Sales extraction<br/>[sales_extract.py]"]
  node_sales_transform["Sales transformation<br/>[transform.py]"]
  node_sales_load["Sales publication<br/>[sales_load.py]"]
  node_etl_load["ETL schema and load<br/>[load.py]"]
  node_run_history["Run history<br/>[run_logging.py]"]
end

subgraph group_operations["Persistence and operations"]
  node_ecommerce_db[("Ecommerce PostgreSQL")]
  node_db_session["Request sessions<br/>[session.py]"]
  node_logging["Request and error logging<br/>[logging_config.py]"]
  node_error_logging["Error logging<br/>[error_logging.py]"]
  node_analytics_db[("Analytics PostgreSQL")]
end

node_client(("Customer or admin"))
node_operator(("ETL operator"))

node_client -->|"sends requests"| node_api_entry
node_api_entry -->|"registers routes"| node_routes
node_api_entry -->|"installs middleware"| node_logging
node_api_entry -->|"installs handlers"| node_error_logging
node_routes -->|"calls registration"| node_customers
node_routes -->|"calls order operations"| node_orders
node_routes -->|"calls catalog operations"| node_products
node_routes -->|"uses dependencies"| node_auth
node_routes -->|"injects sessions"| node_db_session
node_routes -->|"validates and returns"| node_contracts
node_auth -->|"gets sessions"| node_db_session
node_auth -->|"loads customer"| node_domain_models
node_customers -->|"creates customer"| node_domain_models
node_customers -->|"accepts registration"| node_contracts
node_orders -->|"reads and writes"| node_domain_models
node_orders -->|"accepts order"| node_contracts
node_orders -->|"commits order and stock"| node_ecommerce_db
node_customers -->|"persists accounts"| node_ecommerce_db
node_products -->|"manages catalog"| node_ecommerce_db
node_db_session -->|"opens connections"| node_ecommerce_db
node_operator -->|"starts pipeline"| node_etl_runner
node_etl_runner -->|"loads configuration"| node_etl_config
node_etl_runner -->|"runs incremental flow"| node_incremental_pipeline
node_etl_runner -->|"runs daily flow"| node_daily_pipeline
node_incremental_pipeline -->|"acquires publication lock"| node_etl_load
node_incremental_pipeline -->|"extracts sales"| node_sales_extract
node_incremental_pipeline -->|"stages and upserts"| node_sales_load
node_incremental_pipeline -->|"records run status"| node_run_history
node_daily_pipeline -->|"transforms daily totals"| node_sales_transform
node_daily_pipeline -->|"loads daily results"| node_etl_load
node_incremental_pipeline -->|"reads source sales"| node_ecommerce_db
node_incremental_pipeline -->|"publishes facts and checkpoint"| node_analytics_db
node_daily_pipeline -->|"reads source sales"| node_ecommerce_db
node_daily_pipeline -->|"publishes daily metrics"| node_analytics_db

click node_api_entry "https://github.com/ramijaber4/order-management/blob/main/app/main.py"
click node_routes "https://github.com/ramijaber4/order-management/blob/main/app/api/routes.py"
click node_auth "https://github.com/ramijaber4/order-management/blob/main/app/core/auth.py"
click node_contracts "https://github.com/ramijaber4/order-management/blob/main/app/schemas.py"
click node_customers "https://github.com/ramijaber4/order-management/blob/main/app/services/customers.py"
click node_products "https://github.com/ramijaber4/order-management/blob/main/app/services/products.py"
click node_orders "https://github.com/ramijaber4/order-management/blob/main/app/services/orders.py"
click node_domain_models "https://github.com/ramijaber4/order-management/blob/main/app/models.py"
click node_db_session "https://github.com/ramijaber4/order-management/blob/main/app/db/session.py"
click node_logging "https://github.com/ramijaber4/order-management/blob/main/app/core/logging_config.py"
click node_error_logging "https://github.com/ramijaber4/order-management/blob/main/app/core/error_logging.py"
click node_etl_runner "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/run.py"
click node_etl_config "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/config.py"
click node_incremental_pipeline "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/pipeline.py"
click node_daily_pipeline "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/daily_pipeline.py"
click node_sales_extract "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/sales_extract.py"
click node_sales_transform "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/transform.py"
click node_sales_load "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/sales_load.py"
click node_etl_load "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/load.py"
click node_run_history "https://github.com/ramijaber4/order-management/blob/main/etl_analytics/run_logging.py"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_api_entry,node_routes,node_auth,node_contracts toneBlue
class node_customers,node_products,node_orders,node_domain_models toneAmber
class node_etl_runner,node_etl_config,node_incremental_pipeline,node_daily_pipeline,node_sales_extract,node_sales_transform,node_sales_load,node_etl_load,node_run_history toneMint
class node_ecommerce_db,node_db_session,node_logging,node_error_logging,node_analytics_db toneRose
class node_client,node_operator toneIndigo
```

## Components

### API and access

- [FastAPI entry](https://github.com/ramijaber4/order-management/blob/main/app/main.py): `app/main.py`
- [API routes](https://github.com/ramijaber4/order-management/blob/main/app/api/routes.py): `app/api/routes.py`
- [Authentication](https://github.com/ramijaber4/order-management/blob/main/app/core/auth.py): `app/core/auth.py`
- [API contracts](https://github.com/ramijaber4/order-management/blob/main/app/schemas.py): `app/schemas.py`

### Order domain

- [Customer service](https://github.com/ramijaber4/order-management/blob/main/app/services/customers.py): `app/services/customers.py`
- [Product service](https://github.com/ramijaber4/order-management/blob/main/app/services/products.py): `app/services/products.py`
- [Order service](https://github.com/ramijaber4/order-management/blob/main/app/services/orders.py): `app/services/orders.py`
- [Commerce models](https://github.com/ramijaber4/order-management/blob/main/app/models.py): `app/models.py`

### Sales analytics

- [ETL command runner](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/run.py): `etl_analytics/run.py`
- [ETL configuration](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/config.py): `etl_analytics/config.py`
- [Incremental pipeline](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/pipeline.py): `etl_analytics/pipeline.py`
- [Daily pipeline](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/daily_pipeline.py): `etl_analytics/daily_pipeline.py`
- [Sales extraction](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/sales_extract.py): `etl_analytics/sales_extract.py`
- [Sales transformation](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/transform.py): `etl_analytics/transform.py`
- [Sales publication](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/sales_load.py): `etl_analytics/sales_load.py`
- [ETL schema and load](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/load.py): `etl_analytics/load.py`
- [Run history](https://github.com/ramijaber4/order-management/blob/main/etl_analytics/run_logging.py): `etl_analytics/run_logging.py`

### Persistence and operations

- **Ecommerce PostgreSQL**
- [Request sessions](https://github.com/ramijaber4/order-management/blob/main/app/db/session.py): `app/db/session.py`
- [Request and error logging](https://github.com/ramijaber4/order-management/blob/main/app/core/logging_config.py): `app/core/logging_config.py`
- [Error logging](https://github.com/ramijaber4/order-management/blob/main/app/core/error_logging.py): `app/core/error_logging.py`
- **Analytics PostgreSQL**

### Other components

- **Customer or admin**
- **ETL operator**

## Connections

- Customer or admin → FastAPI entry: sends requests (evidence: `README.md`)
- FastAPI entry → API routes: registers routes (evidence: `app/main.py`)
- FastAPI entry → Request and error logging: installs middleware (evidence: `app/main.py`)
- FastAPI entry → Error logging: installs handlers (evidence: `app/main.py`)
- API routes → Customer service: calls registration (evidence: `app/api/routes.py`)
- API routes → Order service: calls order operations (evidence: `app/api/routes.py`)
- API routes → Product service: calls catalog operations (evidence: `app/api/routes.py`)
- API routes → Authentication: uses dependencies (evidence: `app/api/routes.py`)
- API routes → Request sessions: injects sessions (evidence: `app/api/routes.py`)
- API routes → API contracts: validates and returns (evidence: `app/api/routes.py`)
- Authentication → Request sessions: gets sessions (evidence: `app/core/auth.py`)
- Authentication → Commerce models: loads customer (evidence: `app/core/auth.py`)
- Customer service → Commerce models: creates customer (evidence: `app/services/customers.py`)
- Customer service → API contracts: accepts registration (evidence: `app/services/customers.py`)
- Order service → Commerce models: reads and writes (evidence: `app/services/orders.py`)
- Order service → API contracts: accepts order (evidence: `app/services/orders.py`)
- Order service → Ecommerce PostgreSQL: commits order and stock (evidence: `README.md`)
- Customer service → Ecommerce PostgreSQL: persists accounts (evidence: `README.md`)
- Product service → Ecommerce PostgreSQL: manages catalog (evidence: `README.md`)
- Request sessions → Ecommerce PostgreSQL: opens connections (evidence: `app/db/session.py`)
- ETL operator → ETL command runner: starts pipeline (evidence: `README.md`)
- ETL command runner → ETL configuration: loads configuration (evidence: `etl_analytics/run.py`)
- ETL command runner → Incremental pipeline: runs incremental flow (evidence: `etl_analytics/run.py`)
- ETL command runner → Daily pipeline: runs daily flow (evidence: `etl_analytics/run.py`)
- Incremental pipeline → ETL schema and load: acquires publication lock (evidence: `etl_analytics/pipeline.py`)
- Incremental pipeline → Sales extraction: extracts sales (evidence: `etl_analytics/pipeline.py`)
- Incremental pipeline → Sales publication: stages and upserts (evidence: `etl_analytics/pipeline.py`)
- Incremental pipeline → Run history: records run status (evidence: `etl_analytics/pipeline.py`)
- Daily pipeline → Sales transformation: transforms daily totals (evidence: `etl_analytics/daily_pipeline.py`)
- Daily pipeline → ETL schema and load: loads daily results (evidence: `etl_analytics/daily_pipeline.py`)
- Incremental pipeline → Ecommerce PostgreSQL: reads source sales (evidence: `README.md`)
- Incremental pipeline → Analytics PostgreSQL: publishes facts and checkpoint (evidence: `README.md`)
- Daily pipeline → Ecommerce PostgreSQL: reads source sales (evidence: `README.md`)
- Daily pipeline → Analytics PostgreSQL: publishes daily metrics (evidence: `README.md`)