mirror of https://github.com/mingrammer/diagrams
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
2.8 KiB
78 lines
2.8 KiB
---
|
|
id: c4
|
|
title: C4
|
|
---
|
|
|
|
## C4 Diagrams
|
|
|
|
[C4](https://c4model.com/) is a standardized model to visualize software architecture.
|
|
You can generate C4 diagrams by using the node and edge classes from the `diagrams.c4` package:
|
|
|
|
```python
|
|
from diagrams import Diagram
|
|
from diagrams.c4 import Person, Container, Database, System, SystemBoundary, Relationship
|
|
|
|
graph_attr = {
|
|
"splines": "spline",
|
|
}
|
|
|
|
with Diagram("Container diagram for Internet Banking System", direction="TB", graph_attr=graph_attr):
|
|
customer = Person(
|
|
name="Personal Banking Customer", description="A customer of the bank, with personal bank accounts."
|
|
)
|
|
|
|
with SystemBoundary("Internet Banking System"):
|
|
webapp = Container(
|
|
name="Web Application",
|
|
technology="Java and Spring MVC",
|
|
description="Delivers the static content and the Internet banking single page application.",
|
|
)
|
|
|
|
spa = Container(
|
|
name="Single-Page Application",
|
|
technology="Javascript and Angular",
|
|
description="Provides all of the Internet banking functionality to customers via their web browser.",
|
|
)
|
|
|
|
mobileapp = Container(
|
|
name="Mobile App",
|
|
technology="Xamarin",
|
|
description="Provides a limited subset of the Internet banking functionality to customers via their mobile device.",
|
|
)
|
|
|
|
api = Container(
|
|
name="API Application",
|
|
technology="Java and Spring MVC",
|
|
description="Provides Internet banking functionality via a JSON/HTTPS API.",
|
|
)
|
|
|
|
database = Database(
|
|
name="Database",
|
|
technology="Oracle Database Schema",
|
|
description="Stores user registration information, hashed authentication credentials, access logs, etc.",
|
|
)
|
|
|
|
email = System(name="E-mail System", description="The internal Microsoft Exchange e-mail system.", external=True)
|
|
|
|
mainframe = System(
|
|
name="Mainframe Banking System",
|
|
description="Stores all of the core banking information about customers, accounts, transactions, etc.",
|
|
external=True,
|
|
)
|
|
|
|
customer >> Relationship("Visits bigbank.com/ib using [HTTPS]") >> webapp
|
|
customer >> Relationship("Views account balances, and makes payments using") >> [spa, mobileapp]
|
|
webapp >> Relationship("Delivers to the customer's web browser") >> spa
|
|
spa >> Relationship("Make API calls to [JSON/HTTPS]") >> api
|
|
mobileapp >> Relationship("Make API calls to [JSON/HTTPS]") >> api
|
|
|
|
api >> Relationship("reads from and writes to") >> database
|
|
api >> Relationship("Sends email using [SMTP]") >> email
|
|
api >> Relationship("Makes API calls to [XML/HTTPS]") >> mainframe
|
|
customer << Relationship("Sends e-mails to") << email
|
|
```
|
|
|
|
It will produce the following diagram:
|
|
|
|
|