---
AWSTemplateFormatVersion: 2010-09-09

Description: Creates an Amazon FSx for Lustre

Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
    - Label:
        default: File system configuration
      Parameters:
        - Name
        - StorageCapacity
        - SubnetId
        - SecurityGroupId
        - ImportPath
        - ExportPath
        - ImportedFileChunkSize
        - WeeklyMaintenanceStartTime
    ParameterLabels:
      ExportPath:
        default: Export path (optional)
      ImportedFileChunkSize:
        default: Imported file chunk size (MiB) (optional)
      ImportPath:
        default: Import path (optional)
      Name:
        default: Name tag value
      SecurityGroupId:
        default: Security group
      StorageCapacity:
        default: Storage capacity (GiB)
      SubnetId:
        default: Subnet
      WeeklyMaintenanceStartTime:
        default: Weekly maintenance start time (optional)

Parameters:    
  ExportPath:
    AllowedPattern: ^$|(s3://)([a-z0-9.-]*)$
    Description: Export path e.g. s3://my-bucket/export-prefix. Optionally include only if Import Path value is provided. If included, export bucket must match import bucket.
    Type: String
  ImportedFileChunkSize:
    Description: Stripe set of the files imported from a data repository. Optionally include only if Import Path value is provided. Allowed values 1 - 512000.
    Type: String
  ImportPath:
    AllowedPattern: ^$|(s3://)([a-z0-9.-]*)$
    Default: s3://nasanex
    Description: Import path e.g. s3://my-bucket/import-prefix
    Type: String
  Name:
    AllowedPattern: ^$|([A-Za-z0-9+-=._:/ ]{0,256})$
    Description: Name of file system - name value of key-value pair
    Type: String     
  SecurityGroupId:
    Description: Select an existing security group id
    Type: AWS::EC2::SecurityGroup::Id          
  StorageCapacity:
    Default: 18000
    Description: Storage capacity of file system in increments of 3600 GiBs
    MaxValue: 100200
    MinValue: 3600
    Type: Number
  SubnetId:
    Description: Select an existing subnet id
    Type: AWS::EC2::Subnet::Id
  WeeklyMaintenanceStartTime:
    AllowedPattern: ^$|[1-7]:([01]\d|2[0-3]):?([0-5]\d)$
    Description: Enter the weekly maintenance start time in day:hour:minute UTC format (e.g. Monday 11:30pm = 1:23:30)
    Type: String    

Conditions:
  ExportPathProvided:
    !Not [ !Equals [ '', !Ref ExportPath ] ]
  ImportedFileChunkSizeProvided:
    !Not [ !Equals [ '', !Ref ImportedFileChunkSize ] ]
  ImportPathProvided:
    !Not [ !Equals [ '', !Ref ImportPath ] ]
  WeeklyMaintenanceStartTimeProvided:
    !Not [ !Equals [ '', !Ref WeeklyMaintenanceStartTime ] ]

Resources:
  FileSystem:
    Type: AWS::FSx::FileSystem
    Properties:
      FileSystemType: LUSTRE
      StorageCapacity: !Ref StorageCapacity
      SubnetIds:
        - !Ref SubnetId
      SecurityGroupIds:
        - !Ref SecurityGroupId
      Tags:
        - Key: Name
          Value: !Ref FileSystemName
      LustreConfiguration:
        ExportPath: !If [ ExportPathProvided, !Ref ExportPath, !Ref 'AWS::NoValue' ]
        ImportPath: !If [ ImportPathProvided, !Ref ImportPath, !Ref 'AWS::NoValue' ]
        ImportedFileChunkSize: !If [ ImportedFileChunkSizeProvided, !Ref ImportedFileChunkSize, !Ref 'AWS::NoValue' ]
        WeeklyMaintenanceStartTime: !If [ WeeklyMaintenanceStartTimeProvided, !Ref WeeklyMaintenanceStartTime, !Ref 'AWS::NoValue' ]

Outputs:
  FileSystemId:
    Value: !Ref FileSystem