version: "0.1"
title: Create An Amazon DynamoDB Table
description: This wizard will create a new Amazon DynamoDB Table
plan:
  required_values:
    values:
      table_name:
        type: prompt
        description: Enter the name of the table
      primary_key_name:
        type: prompt
        description: Enter the name of the primary key
      primary_key_type:
        type: prompt
        description: Primary key type
        choices:
            - actual_value: S
              display: String
            - actual_value: N
              display: Number
            - actual_value: B
              display:  Binary
      wants_sort_key:
        type: yesno-prompt
        question: Add a sort key?
        start_value: no
    next_step:
      switch: wants_sort_key
      yes: prompt_sort_key
      no: prompt_capacity
  prompt_sort_key:
    values:
      sort_key_name:
        type: prompt
        description: Enter the name of the sort key
      sort_key_type:
        type: prompt
        description: Sort key type
        choices:
            - actual_value: S
              display: String
            - actual_value: N
              display: Number
            - actual_value: B
              display:  Binary
  prompt_capacity:
    values:
      capacity_mode:
        type: prompt
        description: "Select the read/write capacity mode."
        choices:
          - actual_value: PROVISIONED
            display: Provisioned (free-tier eligible)
          - actual_value: PAY_PER_REQUEST
            display: On-demand
    next_step:
      switch: capacity_mode
      PAY_PER_REQUEST: prompt_encryption
      PROVISIONED: prompt_throughput
  prompt_throughput:
    values:
      read_capacity:
        type: prompt
        description: Enter read capacity units
        datatype: int
      write_capacity:
        type: prompt
        description: Enter write capacity units
        datatype: int
  prompt_encryption:
    values:
      encryption_settings:
        type: prompt
        description: "Select Server-side encryption settings for your DynamoDB table"
        choices:
          - display: "DEFAULT"
            actual_value: default
          - display: "KMS - AWS managed CMK"
            actual_value: aws_managed_cmk
          - display: "KMS - Customer managed CMK"
            actual_value: customer_managed_cmk
    next_step:
      switch: encryption_settings
      customer_managed_cmk: prompt_for_customer_cmk
      default: DONE
      aws_managed_cmk: DONE
  prompt_for_customer_cmk:
    values:
      existing_cmks:
        type: apicall
        operation: kms.ListAliases
        params: {}
        query: "Aliases[?!starts_with(AliasName, `alias/aws`)].{display: AliasName, actual_value: TargetKeyId}"
      kms_key_id:
        type: prompt
        description: Choose a customer managed CMK
        choices: existing_cmks
execute:
  parameter-build:
    - type: define-variable
      varname: create_table_params
      value:
        TableName: "{table_name}"
        KeySchema:
          - AttributeName: "{primary_key_name}"
            KeyType: HASH
        AttributeDefinitions:
          - AttributeName: "{primary_key_name}"
            AttributeType: "{primary_key_type}"
        BillingMode: "{capacity_mode}"
    - type: merge-dict
      output_var: create_table_params
      condition:
        variable: wants_sort_key
        equals: yes
      overlays:
        - "{create_table_params}"
        - KeySchema:
            - AttributeName: "{sort_key_name}"
              KeyType: RANGE
          AttributeDefinitions:
            - AttributeName: "{sort_key_name}"
              AttributeType: "{sort_key_type}"
    - type: merge-dict
      output_var: create_table_params
      condition:
        variable: capacity_mode
        equals: PROVISIONED
      overlays:
        - "{create_table_params}"
        - ProvisionedThroughput:
            ReadCapacityUnits: "{read_capacity}"
            WriteCapacityUnits: "{write_capacity}"
    - type: merge-dict
      output_var: create_table_params
      condition:
        variable: encryption_settings
        equals: aws_managed_cmk
      overlays:
        - "{create_table_params}"
        - SSESpecification:
            Enabled: true
            SSEType: KMS
    - type: merge-dict
      output_var: create_table_params
      condition:
        variable: encryption_settings
        equals: customer_managed_cmk
      overlays:
        - "{create_table_params}"
        - SSESpecification:
            Enabled: true
            SSEType: KMS
            KMSMasterKeyId: "{kms_key_id}"
  apicalls:
    - type: apicall
      operation: dynamodb.CreateTable
      params: "{create_table_params}"