DomainModel.Generator

Domain model is a tool to analyze your model (.Net dll)

You can run it as a part of your build or release pipeline to generate always up to date diagram and attach it to your documentation.

Example

First you need to build your model, or publish it to have all your external dependencies in same directory. Program will look for dotnet dependencies in RuntimeEnvironment.GetRuntimeDirectory().

$ dotnet build

You can find my test model in src/DomainModel.Generator.CLI.Tests/TestModel/Model.cs

My model is placed in DomainModel.Generator.CLI.Tests.dll but I do not want to have all types in my diagram so I will only choose TestModel namespace using -n param. I also do not want to have Program type from this namespace so I will exclude only this type using --ignore-type.

$ dotnet model generate -m ./DomainModel.Generator.CLI.Tests.dll -n TestModel --ignore-type TestModel.Program -o ~/Projects/DomainModel.Generate/model.mmd

Majority of remote repositories like GitHub and GitLab directly support display of marmaid markdown.

Output:

%%{init: {'theme':'forest'}}%%
classDiagram
  class Sale
  Sale : +List~Guid~ CustomerId

  class Customer
  Customer : +Guid Id
  Customer : +Int32 Age
  Customer : +List~ContactDetails~ Contacts
  Customer : +Address BusinessAddress
  Customer : +DateTime CreateDate
  Customer : +CustomerType Type

  class Address
  Address : +String City
  Address : +String Street

  class CustomerType
  <<enumeration>> CustomerType
  CustomerType : +Individual
  CustomerType : +Company

Sale --> Customer
Customer --> ContactDetails
Customer --> Address
Customer --> CustomerType

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Installation

$ dotnet tool install DomainModel.Generator --global

Because marmaid format is a markdown you can easly find out what was changes using git diff

Usage

  model generate [--diagram=<dt>] (-m=<md> | --module=<md>) (-o=<out> | --output=<out>) [--format=<f>] [-n=<ns>... | --namespace=<ns>...] [--ignore-namespace=<ign>...] [-t=<type>... | --type=<type>...] [--ignore-type=<igt>...]
  model -h | --help
  model --version

Options:
  -h --help                         Show this screen.
  --version                         Show version.
  -m=<md> --module=<md>             **Required** Module where to look for types (eg: MyCompany.Domain.dll).
  -n=<ns>... --namespace=<ns>...    Only types in provided namespaces will be visible on diagram as objects.
  -t=<type>... --type=<type>...   Types to include even if not defined in provided namespaces.
  --ignore-namespace=<ign>...       Namespaces to ignore.
  --ignore-type=<igt>               Type to ignore.
  -o=<out> --output=<out>           **Required** File where to put markdown with diagram (will be overridden!).
  --format=<f>                      Markdown format. Supported values: mermaid, markdown [default: mermaid].
  --diagram=<dt>                    Type of diagram to generate [default: class].