terraform 是否支持数学四舍五入? [英] Does terraform support math rounding?

问题描述

是否可以在 terraform 字符串插值中舍入整数值?

Is it possible to round an integer value in terraform string interpolations?

推荐答案

这有点像 hack，不使用 terraform 字符串插值，但是..

It's a bit of a hack and doesn't use terraform string interpolations but..

您可以使用外部数据源 (https://www.terraform.io/docs/providers/external/data_source.html) 委托给另一个程序.我包含的示例使用了 bash 和 jq.但是，您可能无需 jq 就可以实现这一点.

You can do this with the external data source (https://www.terraform.io/docs/providers/external/data_source.html) by delegating it to another program. The example I've included uses bash and jq. However you could probably achieve this without jq.

地形:

data external "rounder" {

  program = ["bash", "${path.module}/round.sh"]
  query {
    value="1.3"
  }
}

output "round" {
  value = "${data.external.rounder.result.value}"
}

round.sh:

#!/usr/bin/env bash

# Exit if any of the intermediate steps fail
set -e

eval "$(jq -r '@sh "VALUE=\(.value)"')"

ROUNDED=$(printf "%.0f\n" $VALUE)

jq -n --arg rounded "$ROUNDED" '{"value":$rounded}'

这里有一个关于在 terraform 中支持round"的问题:https://github.com/hashicorp/terraform/issues/16251

Here is an issue about supporting "round" in terraform: https://github.com/hashicorp/terraform/issues/16251

这篇关于terraform 是否支持数学四舍五入?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！