CODEWITHSUNDEEP
terraform
Archimedes Trajano
Archimedes Trajano

Reputation: 41290

Convert a list to another list in Terraform

I recall seeing something like this in the documentation before, but I can't find it right now.

I have a list of instances I have created aws_instance.managers.*.id what I want to do is convert it to another list suitable for cloudwatch dashboard which looks like

  [
      ".",
      "CPUCreditBalance",
      ".",
      "i-0f2",
  ],

So say I have a list aws_instance.managers.*.id which resolves to ["i-a", "i-b", "i-c"] I want it to transform into something like

[
  [
      ".",
      "CPUCreditBalance",
      ".",
      "i-a",
  ],
  [
      ".",
      "CPUCreditBalance",
      ".",
      "i-b",
  ],
  [
      ".",
      "CPUCreditBalance",
      ".",
      "i-c",
  ],
]

Presumably something like

locals {
  dashboard_cpu_balance = [ foreach aws_instance.managers.*.id => 
    [
      ".",
      "CPUCreditBalance",
      ".",
      "i-a",
    ],
  ]
}

Upvotes: 0

Views: 1598

Answers (1)

Giridhar
Giridhar

Reputation: 588

something like this....

locals {
  dashboard_cpu_balance = [ for a in aws_instance.managers.*.id :
    [
      ".",
      "CPUCreditBalance",
      ".",
      a,
    ]
  ]
}

Output..

Outputs:

op = [
  [
    ".",
    "CPUCreditBalance",
    ".",
    "i-a",
  ],
  [
    ".",
    "CPUCreditBalance",
    ".",
    "i-b",
  ],
  [
    ".",
    "CPUCreditBalance",
    ".",
    "i-c",
  ],
]

Upvotes: 2

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