crypto-notification-api/template.yml at main · rajivos/crypto-notification-api · GitHub

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AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: Cryptocurrency Price Notification System

Globals:
  Function:
    Runtime: nodejs18.x
    Timeout: 30
    MemorySize: 256
    Environment:
      Variables:
        SEARCH_HISTORY_TABLE: !Ref SearchHistoryTable
        SEARCH_HISTORY_GSI_NAME: "SearchHistoryByTime"
        DYNAMODB_TABLE: !Ref SearchHistoryTable
        SENDER_EMAIL: !Ref SenderEmail
        COINGECKO_API_KEY: !Ref CoinGeckoApiKey

Parameters:
  SenderEmail:
    Type: String
    Description: Verified SES email address for sending notifications
    Default: raj.c.khushiram@gmail.com
  CoinGeckoApiKey:
    Type: String
    Description: CoinGecko API key used to query market data
    NoEcho: true
  SearchHistoryTableName:
    Type: String
    Description: DynamoDB table name
    Default: SearchHistory

Resources:
  SearchHistoryTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: SearchHistory
      BillingMode: PAY_PER_REQUEST
      AttributeDefinitions:
        - AttributeName: searchId
          AttributeType: S
        - AttributeName: timestamp
          AttributeType: N
        - AttributeName: entityType
          AttributeType: S
      KeySchema:
        - AttributeName: searchId
          KeyType: HASH
        - AttributeName: timestamp
          KeyType: RANGE
      GlobalSecondaryIndexes:
        - IndexName: SearchHistoryByTime
          KeySchema:
            - AttributeName: entityType
              KeyType: HASH
            - AttributeName: timestamp
              KeyType: RANGE
          Projection:
            ProjectionType: ALL

  # API Gateway
  CryptoApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: prod
      Cors:
        AllowMethods: "'GET,POST,OPTIONS'"
        AllowHeaders: "'Content-Type,X-Amz-Date,Authorization,X-Api-Key'"
        AllowOrigin: "'*'"

  # Microservice 1: Get Crypto Price and Send Email
  GetCryptoPriceFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: src/pricenotification/
      Handler: index.handler
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref SearchHistoryTable
        - SESCrudPolicy:
            IdentityName: !Ref SenderEmail
      Events:
        GetPrice:
          Type: Api
          Properties:
            RestApiId: !Ref CryptoApi
            Path: /crypto/price
            Method: POST
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        EntryPoints:
          - index.ts
        Tsconfig: tsconfig.json

  # Microservice 2: Get Search History
  GetSearchHistoryFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: src/searchhistory/
      Handler: index.handler
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref SearchHistoryTable
      Events:
        GetHistory:
          Type: Api
          Properties:
            RestApiId: !Ref CryptoApi
            Path: /crypto/history
            Method: GET
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        EntryPoints:
          - index.ts
        Tsconfig: tsconfig.json

Outputs:
  ApiEndpoint:
    Description: API Gateway endpoint URL
    Value: !Sub "https://${CryptoApi}.execute-api.${AWS::Region}.amazonaws.com/prod"

  SearchHistoryTableName:
    Description: DynamoDB table name
    Value: !Ref SearchHistoryTable