template.yml

AWSTemplateFormatVersion: 2010-09-09

Description: >-
  crypto-bot-parrot

Transform:
  - AWS::Serverless-2016-10-31

Parameters:
  LogLevelParameter:
    Type: String
    Description: Functions log level
    Default: info
    AllowedValues:
      - debug
      - info
  EnvironmentParameter:
    Type: String
    Description: Environment where the stack is deployed
    Default: test
    AllowedValues:
      - test
      - prod
  TracingParameter:
    Description: Boolean to enable or disable tracing
    Type: String
    Default: false
  ExchangesSecretNameParameter:
    Description: Name of the exchanges secret stored in Secrets Manager
    Type: String
  ExchangesSecretEncryptionKeyParameter:
    Description: Encryption key used to encrypt the exchanges secret in Secrets Manager (either a key id 'key/xxx' or an alias 'alias/xxx')
    Type: String
    Default: alias/aws/secretsmanager

Conditions:
  TracingCondition: !Equals [ !Ref TracingParameter, true ]

Mappings:
  EnvironmentMap:
    test:
      Strategy: '{ "exchange": "Binance", "symbol": "BTC#BUSD", "quantity": 50, "assets": [ { "asset": "ETH|BNB", "percentage": 0.50 } ] }'
      StrategySchedule: cron(0 18 ? * * *)
    prod:
      Strategy: '{ "exchange": "Binance", "symbol": "BTC#EUR", "quantity": 25, "assets": [ { "asset": "ETH", "percentage": 0.26 }, { "asset": "ADA|BNB|MATIC", "percentage": 0.24 }, { "asset": "AVAX|EGLD|SOL", "percentage": 0.24 } ] }'
      StrategySchedule: cron(0 18 ? * 1 *)

Globals:
  Function:
    Runtime: nodejs16.x
    MemorySize: 128
    Timeout: 30
    AutoPublishAlias: Live
    Tracing: !If [ TracingCondition, Active, PassThrough ]
    Environment:
      Variables:
        LOG_LEVEL: !Ref LogLevelParameter
        ENV: !Ref EnvironmentParameter
        REGION: !Ref AWS::Region
        TRACING: !Ref TracingParameter

Resources:
  ExecuteStrategyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Description: Execute strategy function
      CodeUri: src/handlers
      Handler: execute-strategy-handler.handler
      ReservedConcurrentExecutions: 1
      Environment:
        Variables:
          EXCHANGES_SECRET_NAME: !Ref ExchangesSecretNameParameter
          STRATEGY_TABLE_NAME: !Ref StrategyTable
          STRATEGY: !FindInMap [ EnvironmentMap, !Ref EnvironmentParameter, Strategy ]
      Events:
        ScheduleEvent:
          Type: Schedule
          Properties:
            Enabled: true
            Schedule: !FindInMap [ EnvironmentMap, !Ref EnvironmentParameter, StrategySchedule ]
      Policies:
        - AWSSecretsManagerGetSecretValuePolicy:
            SecretArn: !Sub arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:${ExchangesSecretNameParameter}*
        - Version: 2012-10-17
          Statement:
            - Effect: Allow
              Action:
                - kms:Decrypt
              Resource: !Sub arn:aws:kms:${AWS::Region}:${AWS::AccountId}:${ExchangesSecretEncryptionKeyParameter}
        - DynamoDBReadPolicy:
            TableName: !Ref StrategyTable
        - DynamoDBWritePolicy:
            TableName: !Ref StrategyTable
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Target: es2021
        Minify: true
        SourceMap: true
        EntryPoints:
          - execute-strategy-handler.ts

  StrategyTable:
    Type: AWS::DynamoDB::Table
    Properties:
      BillingMode: PAY_PER_REQUEST
      SSESpecification:
        SSEEnabled: true
      KeySchema:
        - AttributeName: pk
          KeyType: HASH
        - AttributeName: sk
          KeyType: RANGE
      AttributeDefinitions:
        - AttributeName: pk
          AttributeType: S
        - AttributeName: sk
          AttributeType: S

Outputs:
  ExecuteStrategyFunctionName:
    Description: Execute strategy function name
    Value: !Ref ExecuteStrategyFunction
  ExecuteStrategyFunctionArn:
    Description: Execute strategy function ARN
    Value: !GetAtt ExecuteStrategyFunction.Arn

  StrategyTableName:
    Description: Strategy table name
    Value: !Ref StrategyTable
  StrategyTableArn:
    Description: Strategy table ARN
    Value: !GetAtt StrategyTable.Arn