k8s-dotnet-microservices-monorepo-saas

A work in progress demonstrating

• k8s deployments to digital ocean using helm charts
• microservices using dotnet
• CI-CD using github actions
• monorepo
• to build a demo software as a service application

• 1. Sites
  • 1.1. Marketing Website Overview
  • 1.2. Registration Website Overview
  • 1.3. Management Website Overview
  • 1.4. Sales Website Overview
  • 1.5. Admin Website Overview
• 2. Gateways
  • 2.1. Sales Gateway
  • 2.2. Management Gateway
• 3. Microservices
  • 3.1. Users Microservice
  • 3.2. Stores Microservice
  • 3.3. Catalog Microservice
  • 3.4. Carts Microservice
  • 3.5. Search Microservice
  • 3.6. Orders Microservice

Builds

Deployments

Environments

Development

The top level domain is ecommerce-store-builder.dev

• marketing
• registration
• shopping
• management
• admin

Example stores

• example1
• example2
• example3

Custom domain names for example stores

• example-store-1.xyz
• example-store-2.xyz
• example-store-3.xyz

Production

The top level domain is ecommerce-store-builder.com

• marketing
• registration
• shopping
• management
• admin

Example stores

• example4
• example5
• example6

Custom domain names for example stores

• example-store-4.xyz
• example-store-5.xyz
• example-store-6.xyz

Solution Diagrams

Context

client -> ingress -> frontend -> backend -> service

1. Sites

1.1. Marketing Website Overview

1.2. Registration Website Overview

1.3. Management Website Overview

1.4. Sales Website Overview

1.5. Admin Website Overview

2. Gateways

2.1. Sales Gateway

2.2. Management Gateway

3. Microservices

3.1. Accounts Microservice

Use Cases

• Create account
• Add user to account
• Auth user

Publishes

• Account Created
• User Created

Subscribes

• None

3.2. Stores Microservice

Use Cases

• Create store
• Get store
• Get store by domain
• Set store theme
• Set store custom domain

3.1. Users Microservice

API
- Create                (userId, email, password)  [Anonymous]
- Auth                  (email, password)          [Anonymous]

Application

Domain
- User

Infrastructure
- CurrentSiteContext
- CurrentUserContext

Publishes
- UserCreated

Subscribes

3.2. Stores Microservice

API
- Create                (storeId, name)             [Anonymous] 
- GetById               (storeId)                   [Anonymous]
- GetByDomain           (domain)                    [Anonymous]
- SetTheme              (storeId, theme)            [Owner]
- SetCustomDomain       (storeId, domain)           [Owner]
- List                  ()                          [Admin]

Application

Domain
- Cart
- CartItem

Infrastructure

Publishes
- StoreCreated
- StoreUpdated

Subscribes

3.3. Products Microservice

3.4. Carts Microservice

3.5. Search Microservice

3.6. Media Microservice

Running in docker

• infra

docker-compose -f docker-compose-infra.yaml up

• platform

docker-compose -f docker-compose.yaml build
docker-compose -f docker-compose.yaml -f docker-compose.override.yaml up
docker-compose -f docker-compose.yaml down

Development

Host file setup

127.0.0.1 marketing.saas.io
127.0.0.1 registration.saas.io
127.0.0.1 shopping.saas.io
127.0.0.1 management.saas.io
127.0.0.1 admin.saas.io
127.0.0.1 example1.saas.io
127.0.0.1 example2.saas.io
127.0.0.1 example3.saas.io
127.0.0.1 example1.io
127.0.0.1 example2.io
127.0.0.1 example3.io

Port registry

FrontEnds

• marketing 8010
• registration 8020
• shopping 8030
• management 8040
• admin 8050

Gateways

• marketing 7010
• registration 7020
• shopping 7030
• management 7040
• admin 7050

Backends

• registration 6020
• shopping 6030

Services

• catalog 5010
• carts 5020
• media 5030
• search 5040
• stores 5050
• accounts 5060

Build

Github Actions

• Setup Secrets
  • DIGITALOCEAN_ACCESS_TOKEN
  • REGISTRY_ENDPOINT in the form ghcr.io/peterkneale/k8s-dotnet-microservices-monorepo-saas
  • REGISTRY_HOST in the form ghcr.io

Release

Setup

• Set environment variables

export GITHUB_USERNAME=peterkneale
export GITHUB_TOKEN=XXXXXXXXXXXXXX
export DIGITALOCEAN_TOKEN=XXXXXXXXXXXXXX
export REGISTRY_HOST=ghcr.io
export REGISTRY_ENDPOINT=ghcr.io/peterkneale/k8s-dotnet-microservices-monorepo-saas
export TAG=latest
echo $GITHUB_TOKEN | docker login $REGISTRY_HOST -u $GITHUB_USERNAME --password-stdin
echo $DIGITALOCEAN_TOKEN | doctl auth init --context saas

K8s

Digital Ocean

• Setup cluster in Digital Ocean
• Install add-ons NGINX Ingress Controller and Cert-Manager
• run k8s-install.sh in /deploy/infra/digitalocean

Accessing cluster resources

Accessing a resource in the k8s cluster can be performed by using kubectl's port forwarding feature Forwarding the local port 8080 to the below services will make them available on http://localhost:8080

• Dashboard

  kubectl -n default port-forward svc/infra-dashboard-kubernetes-dashboard 8443:443
  kubectl describe secret -n kube-system | grep deployment -A 12

• A service

  kubectl port-forward --namespace development svc/service-accounts-saas 8080:80

  $ curl localhost:8080/health/alive
  Healthy