nathanpeck

run:
	docker-compose up -d

build:
	docker-compose build client
	docker-compose up --no-deps -d client

test:
	docker-compose build client
	docker-compose build test

nathanpeck

version: "3"
networks:
  chat:

services:
  # Launch the Redis used for syncing messages between copies of the client app
  redis:
    image: redis
    networks:
      - chat

nathanpeck

$ time docker-compose build client
Building client
Step 1/9 : FROM node:9 AS build
 ---> 814364d36f69
Step 2/9 : WORKDIR /srv
 ---> Using cache
 ---> 031927a1a5ab
Step 3/9 : ADD package.json .
 ---> Using cache
 ---> 9cd95ef4d4ce

nathanpeck

FROM node:9 AS build
WORKDIR /srv
ADD package.json .
RUN npm install

FROM node:9-slim
COPY --from=build /srv .
ADD . .
EXPOSE 3000
CMD ["node", "index.js"]

nathanpeck

# A role for the service so it can access the tables
ChatServiceRole:
  Type: AWS::IAM::Role
  Properties:
    AssumeRolePolicyDocument:
      Statement:
      - Effect: Allow
        Principal:
          Service: "ecs-tasks.amazonaws.com"
        Action: ['sts:AssumeRole']

nathanpeck

messages = await this.dynamoDB.query({
  TableName: this.tableName,
  KeyConditionExpression: 'room = :room',
  Limit: 20,
  ExpressionAttributeValues: {
    ':room': where.room
  },
  ExclusiveStartKey: where.message ? where : undefined,
  ScanIndexForward: false // Always return newest items first
}).promise();

nathanpeck

<div id="content" class="content">
  <room-details></room-details>
  <messages></messages>
  <typing></typing>
</div>

nathanpeck

var store = {
  data: {
    typing: []
  },
  
  addTyper: function(typer) {
    this.data.typing.push(typer);
  }
};

nathanpeck

# Enable autoscaling for the service
ScalableTarget:
  Type: AWS::ApplicationAutoScaling::ScalableTarget
  DependsOn: Service
  Properties:
    ServiceNamespace: 'ecs'
    ScalableDimension: 'ecs:service:DesiredCount'
    ResourceId:
      Fn::Join:
        - '/'

nathanpeck

TaskDefinition:
  Type: AWS::ECS::TaskDefinition
  Properties:
    Family: !Ref 'ServiceName'
    Cpu: !Ref 'ContainerCpu'
    Memory: !Ref 'ContainerMemory'
    NetworkMode: awsvpc
    RequiresCompatibilities:
      - FARGATE
    ExecutionRoleArn: