@Gapi Microservices Starter


@Nginx, @Rabbitmq, @Postgres, @Sequelize, @Docker, @Graphql

This is basic microservices example project related with GAPI

To check advanced example project go to advanced-example

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``bash
git clone https://github.com/Stradivario/gapi-starter-microservices
`

#### Better use command line utility(gapi-cli) to install it type following command:

`bash
npm i -g @gapi/cli
`

#### Type the following command to create new project from scratch via CLI

`bash
gapi new my-project --microservices
`

#### To start project for "development" type:

`bash
npm start
`

#### To start project for "production" type:

This will run following commands "pm2 process.yml --only APP" (DEVELPOMENT) or "pm2-docker process.yml --only APP"(PRODUCTION inside docker) (check process.yml inside root repository)

`bash
npm run start:prod
`

#### To stop project for "production" type:

Following command will stop pm2 processes started

`bash
npm run stop:prod
`

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#### To start developing with testing GAPI uses JEST and gapi-cli is preconfigurated for your needs! :)

#### To run single test type:

`bash
gapi test
`

#### Testing watch mode

##### Note: You need to start server before running tests

###### Note: Everytime you make change to server it will restart server and execute tests

###### Note: To add more tests just create e2e.spec.ts or unit.spec.ts somewhere inside the application

##### Start the application

`bash
gapi start
`

##### Execute test with --watch argument

`bash
gapi test --watch
`

###### You will end up with something like this

!Alt Text

#### Custom logic before testing ( for example creating MOCK users to database before testing)

##### Create file test.ts inside root/src/test.ts with this content

##### Everytime you run test with --before argument it will set environment variable BEFORE_HOOK

`typescript
if (process.env.BEFORE_HOOK) {
// do something here
}
`

##### Then execute tests with --before

`bash
gapi test --before
`

###### This command will start root/src/test.ts file and will wait for process.exit(0) so you can customize your before logic check this link for reference

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#### Following commands will start RabbitMQ, PostgreSQL, API, NGINX as a services you need DOCKER for them

##### API will be served on https://localhost:80 and https://localhost:80/subscriptions

#### To build project with Docker type:

`bash
gapi app build
`

#### To start project with Docker type:

`bash
gapi app start
`

#### To stop project type:

`bash
gapi app stop
`

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#### All workers will be mapped as Proxy and will be reverted to https://localhost:80 and https://localhost:80/subscriptions

##### So you don't have to worry about if some of your workers stopped responding

###### TODO: Create monitoring APP for all workers and main API

#### To start workers type

`bash
gapi workers start
`

#### To stop workers type

`bash
gapi workers stop
`

##### To add more workers

###### By default there are 4 workers with 4 processes with "exec_mode: cluster" of the original process inside single docker container

###### You can control Processes inside single docker container from "root/process.yml" file.

`yml
apps:
- script : './src/main.ts'
name : 'APP'
exec_mode: 'cluster'
instances: 4

`

###### To map new worker as a stream open root/nginx/config/private/default

`nginx
upstream app_servers {
server 182.10.0.3:9000; # Main process
server 182.10.0.21:9000; # Worker 1
server 182.10.0.22:9000; # Worker 2
server 182.10.0.23:9000; # Worker 3
server 182.10.0.24:9000; # Worker 4

# Add more workers here
# server 182.10.0.25:9000; # Worker 5
}

server {
listen 80;
server_name api.yourdomain.com;
access_log api-yourdomain.access.log;

location / {
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
client_max_body_size 50M;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Frame-Options SAMEORIGIN;
proxy_buffers 256 16k;
proxy_buffering off;
proxy_buffer_size 16k;
proxy_read_timeout 600s;
proxy_pass http://app_servers;
}

location /subscriptions {
# prevents 502 bad gateway error
proxy_buffers 8 32k;
proxy_buffer_size 64k;

# redirect all HTTP traffic to localhost:9000;
proxy_pass http://app_servers/subscriptions;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#proxy_set_header X-NginX-Proxy true;

# enables WS support
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_buffering off;
proxy_read_timeout 999999999;

}
if ($scheme = http) {
return 301 https://$server_name$request_uri;
}
listen 443;
ssl on;
ssl_certificate /usr/share/certs/cert.pem;
ssl_certificate_key /usr/share/certs/cert.key;
}


`

###### When you add another worker it should be on different IP with same port 9000

###### Open root/gapi.conf.yml file you will find this file:

`yml
config:


Application configuration

app:
local:
API_PORT: 9000
API_CERT: ./cert.key
NODE_ENV: development
AMQP_HOST: 182.10.0.5
AMQP_PORT: 5672
GRAPHIQL: true
GRAPHIQL_TOKEN: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImtyaXN0aXFuLnRhY2hldkBnbWFpbC5jb20iLCJpZCI6MSwic2NvcGUiOlsiQURNSU4iXSwiaWF0IjoxNTIwMjkxMzkyfQ.9hpIDPkSiGvjTmUEyg_R_izW-ra2RzzLbe3Uh3IFsZg
ENDPOINT_TESTING: http://localhost:9000/graphql
TOKEN_TESTING: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImtyaXN0aXFuLnRhY2hldkBnbWFpbC5jb20iLCJzY29wZSI6WyJBRE1JTiJdLCJpZCI6MSwiaWF0IjoxNTE2OTk2MzYxfQ.7ANr5VHrViD3NkCaDr0nSWYwk46UAEbOwB52pqye4AM
prod:
API_PORT: 9000
API_CERT: ./cert.key
NODE_ENV: production
AMQP_HOST: 182.10.0.5
AMQP_PORT: 5672

Testing configuration for local(dev) or worker(running tests as a separate worker with separate environment)

test:
local: extends app/local
worker:
API_PORT: 9000
API_CERT: ./cert.key
NODE_ENV: production
AMQP_HOST: 182.10.0.5
AMQP_PORT: 5672
ENDPOINT_TESTING: http://182.10.0.101:9000/graphql
TOKEN_TESTING: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImtyaXN0aXFuLnRhY2hldkBnbWFpbC5jb20iLCJzY29wZSI6WyJBRE1JTiJdLCJpZCI6MSwiaWF0IjoxNTE2OTk2MzYxfQ.7ANr5VHrViD3NkCaDr0nSWYwk46UAEbOwB52pqye4AM

schema:
introspectionEndpoint: http://localhost:9000/graphql
introspectionOutputFolder: ./src/app/core/api-introspection

commands:

testing:
stop:
- docker rm -f gapi-api-prod-worker-tests-executor
- docker rm -f gapi-api-prod-worker-tests-provider
start:
- gapi testing start-provider
- sleep 10
- gapi testing start-executor
- echo Cleaning...
- gapi testing stop
start-provider: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.101 --name gapi-api-prod-worker-tests-provider gapi/api/prod
start-executor:
- docker run -d --network=gapiapiprod_gapi --ip=182.10.0.100 --name gapi-api-prod-worker-tests-executor gapi/api/prod
- docker exec gapi-api-prod-worker-tests-provider npm -v
- gapi test --worker --before

workers:
start:
- gapi workers start-1
- gapi workers start-2
- gapi workers start-3
- gapi workers start-4
stop:
- docker rm -f gapi-api-prod-worker-1
- docker rm -f gapi-api-prod-worker-2
- docker rm -f gapi-api-prod-worker-3
- docker rm -f gapi-api-prod-worker-4
start-1: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.21 --name gapi-api-prod-worker-1 gapi/api/prod
start-2: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.22 --name gapi-api-prod-worker-2 gapi/api/prod
start-3: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.23 --name gapi-api-prod-worker-3 gapi/api/prod
start-4: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.24 --name gapi-api-prod-worker-4 gapi/api/prod
example-worker-with-port: docker run -d --network=gapiapiprod_gapi --ip=182.10.0.25 --name gapi-api-prod-worker-5 -p 9001:9000 gapi/api/prod

app:
start:
- docker-compose -p gapi-api-prod up --force-recreate -d
- gapi rabbitmq enable-dashboard
stop:
- gapi nginx stop
- gapi api stop
- gapi rabbitmq stop
- gapi postgres stop
build: docker build -t gapi/api/prod .

api:
stop: docker rm -f gapi-api-prod

nginx:
stop: docker rm -f gapi-api-nginx

postgres:
stop: docker rm -f gapi-api-postgres

rabbitmq:
stop: docker rm -f gapi-api-rabbitmq
restart: docker restart gapi-api-rabbitmq
enable-dashboard: docker exec gapi-api-rabbitmq rabbitmq-plugins enable rabbitmq_management

You can define your custom commands for example

commands:

your-cli:

my-command: 'npm -v'

This command can be executed as "gapi your-cli my-command"

`

###### Adding one more worker:

`yml
start-5: 'docker run -d --network=gapiapiprod_gapi --ip=182.10.0.25 --name gapi-api-prod-worker-5 -p 9005:9000 gapi/api/prod'
`

###### Then edit start task inside workers to start new worker 5

`yml
start: 'gapi workers start-1 && gapi workers start-2 && gapi workers start-3 && gapi workers start-4 & gapi workers start-5'
`

###### Thats' it!! Now you have 4 processes like CLUSTERS inside 1 docker container with ip 182.10.0.25 and external port(optional) 9005;

###### You can specify worker also without port because all workers are inside internal network called "gapiapiprod_gapi"

###### 182.10.0.21/22/23/24/25:9000

`yml
start-5: 'docker run -d --network=gapiapiprod_gapi --ip=182.10.0.25 --name gapi-api-prod-worker-5 gapi/api/prod'
`

###### If you want to change port forwarding to another port you need to set just nginx configuration:

`yml
nginx:
image: sameersbn/nginx:1.10.1-5
ports:
- "81:80"
- "443:443"
`

###### Now you can find your API served onto https://localhost:81/ and https://localhost:81/subscriptions

###### All workers don't care about that because they will be served and mapped from nginx to port 80

###### You can check docker-compose file to configurate environment variables

`yml
version: '2'
services:

nginx:
image: sameersbn/nginx:1.10.1-5
ports:
- "80:80"
- "443:443"
volumes:
- ./nginx/config:/etc/nginx
- ./nginx/html:/usr/share/nginx/html/
- ./nginx/certs:/usr/share/certs
restart: always
container_name: gapi-api-nginx
networks:
gapi:
ipv4_address: 182.10.0.2

api:
image: gapi/api/prod:latest
ports:
- "9000"
restart: always
mem_limit: 1000000000
cpu_shares: 73
container_name: gapi-api-prod
depends_on:
- nginx
- rabbitMq
networks:
gapi:
ipv4_address: 182.10.0.3

rabbitMq:
image: rabbitmq:3.7.2
ports:
- "15672:15672"
- "5672:5672"
- "5671:5671"
- "4369:4369"
restart: always
container_name: gapi-api-rabbitmq
networks:
gapi:
ipv4_address: 182.10.0.5

networks:
gapi:
driver: bridge
ipam:
config:
- subnet: 182.10.0.0/16
gateway: 182.10.0.1

``

##### After successfully started project you can open your browser to localhost:80 or 182.10.0.3:9000 the api will be served there

TODO: Better documentation...

Enjoy ! :)