From ee39b3e84c2e28d98958489250a29e31aa8fef2a Mon Sep 17 00:00:00 2001
From: Edward Viaene <ward@in4it.io>
Date: Sat, 5 Dec 2020 14:14:28 +0100
Subject: [PATCH] module with flatten function

---
 module-flatten/parameters.tf                  | 31 +++++++++++++++++++
 module-flatten/provider.tf                    |  4 +++
 module-flatten/ssm-parameter/ssm-parameter.tf | 18 +++++++++++
 module-flatten/ssm-parameter/variables.tf     | 10 ++++++
 4 files changed, 63 insertions(+)
 create mode 100644 module-flatten/parameters.tf
 create mode 100644 module-flatten/provider.tf
 create mode 100644 module-flatten/ssm-parameter/ssm-parameter.tf
 create mode 100644 module-flatten/ssm-parameter/variables.tf

diff --git a/module-flatten/parameters.tf b/module-flatten/parameters.tf
new file mode 100644
index 0000000..7418b88
--- /dev/null
+++ b/module-flatten/parameters.tf
@@ -0,0 +1,31 @@
+locals {
+  my_parameters = [
+    {
+      "prefix" = "/myprefix"
+      "parameters" = [
+        {
+          "name"  = "myparameter"
+          "value" = "myvalue"
+        },
+        {
+          "name"  = "environment"
+          "value" = "dev"
+        }
+      ]
+    },
+    {
+      "prefix" = "/myapp"
+      "parameters" = [
+        {
+          "name"  = "environment"
+          "value" = "prod"
+        }
+      ]
+    }
+  ]
+}
+
+module "parameters" {
+  source     = "./ssm-parameter"
+  parameters = local.my_parameters
+}
diff --git a/module-flatten/provider.tf b/module-flatten/provider.tf
new file mode 100644
index 0000000..6a26783
--- /dev/null
+++ b/module-flatten/provider.tf
@@ -0,0 +1,4 @@
+provider "aws" {
+  region = "eu-west-1"
+}
+
diff --git a/module-flatten/ssm-parameter/ssm-parameter.tf b/module-flatten/ssm-parameter/ssm-parameter.tf
new file mode 100644
index 0000000..013f6a7
--- /dev/null
+++ b/module-flatten/ssm-parameter/ssm-parameter.tf
@@ -0,0 +1,18 @@
+locals {
+  parameters = flatten([ 
+    for parameters in var.parameters: [
+      for keyvalues in parameters.parameters:
+        {
+          "name" = "${parameters.prefix}/${keyvalues.name}"
+          "value" = keyvalues.value
+        }
+      ]
+    ])
+}
+
+resource "aws_ssm_parameter" "parameter" {
+  for_each = { for keyvalue in local.parameters: keyvalue.name => keyvalue.value }
+  name     = each.key
+  type     = "String"
+  value    = each.value
+}
diff --git a/module-flatten/ssm-parameter/variables.tf b/module-flatten/ssm-parameter/variables.tf
new file mode 100644
index 0000000..847817e
--- /dev/null
+++ b/module-flatten/ssm-parameter/variables.tf
@@ -0,0 +1,10 @@
+variable "parameters" {
+  type = list(object({
+    prefix = string
+    parameters = list(object({
+      name  = string
+      value = string
+    }))
+  }))
+  default = []
+}