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https://github.com/hardyscc/nestjs-cqrs-starter
NestJS CQRS Microservices Starter Project
https://github.com/hardyscc/nestjs-cqrs-starter
apollo cqrs ddd event-sourcing eventstore federation graphql microservices nestjs nodejs typegraphql typeorm
Last synced: about 2 months ago
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NestJS CQRS Microservices Starter Project
- Host: GitHub
- URL: https://github.com/hardyscc/nestjs-cqrs-starter
- Owner: hardyscc
- Created: 2020-04-05T14:44:16.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2024-03-28T04:03:30.000Z (6 months ago)
- Last Synced: 2024-07-01T00:25:11.325Z (3 months ago)
- Topics: apollo, cqrs, ddd, event-sourcing, eventstore, federation, graphql, microservices, nestjs, nodejs, typegraphql, typeorm
- Language: TypeScript
- Size: 4.67 MB
- Stars: 381
- Watchers: 5
- Forks: 54
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
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README
# NestJS CQRS Microservices Starter
## Description
A starter project featuring an advanced microservice pattern with GraphQL, based on Domain-Driven Design (DDD) using the command query responsibility segregation (CQRS) design pattern.
## Technologies
- [GraphQL](https://graphql.org/)
- [Apollo Federation](https://www.apollographql.com/docs/apollo-server/federation/introduction/)
- [NestJS](https://docs.nestjs.com/)
- [NestJS GraphQL](https://docs.nestjs.com/graphql/quick-start)
- [NestJS Federation](https://docs.nestjs.com/graphql/federation)
- [NestJS TypeORM](https://docs.nestjs.com/techniques/database)
- [NestJS CQRS](https://docs.nestjs.com/recipes/cqrs)
- [NestJS Event Store](https://github.com/juicycleff/nestjs-event-store)
## Installation
**Please use the `nest-v7` branch, the `master` branch still not working properly.**
```bash
git clone -b nest-v7 https://github.com/hardyscc/nestjs-cqrs-starter.git
cd
npm install
```
## Usage
### Start MySQL
Start MySQL docker instance.
```bash
docker run -d -e "MYSQL_ROOT_PASSWORD=Admin12345" -e "MYSQL_USER=usr" -e "MYSQL_PASSWORD=User12345" -e "MYSQL_DATABASE=development" -e "MYSQL_AUTHENTICATION_PLUGIN=mysql_native_password" -p 3306:3306 --name some-mysql bitnami/mysql:8.0.19
```
Connect using MySQL docker instance command line.
```bash
docker exec -it some-mysql mysql -uroot -p"Admin12345"
```
Create the Databases for testing
```sql
CREATE DATABASE service_user;
GRANT ALL PRIVILEGES ON service_user.* TO 'usr'@'%';
CREATE DATABASE service_account;
GRANT ALL PRIVILEGES ON service_account.* TO 'usr'@'%';
FLUSH PRIVILEGES;
```
Clean up all data if needed to re-testing again
```sql
DELETE FROM service_account.ACCOUNT;
DELETE FROM service_user.USER;
```
### Start EventStore
```bash
docker run --name some-eventstore -d -p 2113:2113 -p 1113:1113 eventstore/eventstore:release-5.0.9
```
Create the Persistent Subscriptions
```bash
curl -L -X PUT "http://localhost:2113/subscriptions/%24svc-user/account" \
-H "Content-Type: application/json" \
-H "Authorization: Basic YWRtaW46Y2hhbmdlaXQ=" \
-d "{}"
curl -L -X PUT "http://localhost:2113/subscriptions/%24svc-account/user" \
-H "Content-Type: application/json" \
-H "Authorization: Basic YWRtaW46Y2hhbmdlaXQ=" \
-d "{}"
```
### Start the microservices
```bash
# Start the user service
nest start service-user
# Start the account service
nest start service-account
# start the gateway
nest start gateway
```
## Testing
Goto GraphQL Playground - http://localhost:3000/graphql
### Create a user with a default saving account
```graphql
mutation {
createUser(input: { name: "John" }) {
id
name
}
}
```
OR
```bash
curl -X POST -H 'Content-Type: application/json' \
-d '{"query": "mutation { createUser(input: { name: \"John\" }) { id name } }"}' \
http://localhost:3000/graphql
```
You should see something like this
1. Under `service-user` console
```sql
Async CreateUserHandler... CreateUserCommand
query: START TRANSACTION
query: INSERT INTO `USER`(`id`, `name`, `nickName`, `status`) VALUES (?, ?, DEFAULT, DEFAULT) -- PARAMETERS: ["4d04689b-ef40-4a08-8a27-6fa420790ddb","John"]
query: SELECT `User`.`id` AS `User_id`, `User`.`status` AS `User_status` FROM `USER` `User` WHERE `User`.`id` = ? -- PARAMETERS: ["4d04689b-ef40-4a08-8a27-6fa420790ddb"]
query: COMMIT
Async ActivateUserHandler... ActivateUserCommand
query: UPDATE `USER` SET `status` = ? WHERE `id` IN (?) -- PARAMETERS: ["A","4d04689b-ef40-4a08-8a27-6fa420790ddb"]
```
1. under `service-account` console
```sql
Async CreateAccountHandler... CreateAccountCommand
query: START TRANSACTION
query: INSERT INTO `ACCOUNT`(`id`, `name`, `balance`, `userId`) VALUES (?, ?, DEFAULT, ?) -- PARAMETERS: ["57c3cc9e-4aa9-4ea8-8c7f-5d4653ee709f","Saving","4d04689b-ef40-4a08-8a27-6fa420790ddb"]
query: SELECT `Account`.`id` AS `Account_id`, `Account`.`balance` AS `Account_balance` FROM `ACCOUNT` `Account` WHERE `Account`.`id` = ? -- PARAMETERS: ["57c3cc9e-4aa9-4ea8-8c7f-5d4653ee709f"]
query: COMMIT
```
### Query the users
```graphql
query {
users {
id
name
accounts {
id
name
balance
}
}
}
```
OR
```bash
curl -X POST -H 'Content-Type: application/json' \
-d '{"query": "query { users { id name accounts { id name balance } } }"}' \
http://localhost:3000/graphql
```
Output :
```JSON
{
"data": {
"users": [
{
"id": "4d04689b-ef40-4a08-8a27-6fa420790ddb",
"name": "John",
"accounts": [
{
"id": "57c3cc9e-4aa9-4ea8-8c7f-5d4653ee709f",
"name": "Saving",
"balance": 0
}
]
}
]
}
}
```