properly handle nested submodules (#365)

pkg/iac-providers/terraform/v12/load-dir.go

@@ -82,9 +82,15 @@ func (*TfV12) LoadIacDir(absRootDir string) (allResourcesConfig output.AllResour
 			var pathToModule string
 			if isLocalSourceAddr(req.SourceAddr) {
 				// determine the absolute path from root module to the sub module
-				// using *configs.ModuleRequest.Path field
-				pathToModule = filepath.Join(absRootDir, req.Parent.SourceAddr, req.SourceAddr)
-				zap.S().Debugf("processing local module %q", req.SourceAddr)
+				// since we start at the end of the path, we need to assemble
+				// the parts in reverse order
+
+				pathToModule = req.SourceAddr
+				for p := req.Parent; p != nil; p = p.Parent {
+					pathToModule = filepath.Join(p.SourceAddr, pathToModule)
+				}
+				pathToModule = filepath.Join(absRootDir, pathToModule)
+				zap.S().Debugf("processing local module %q", pathToModule)
 			} else {
 				// temp dir to download the remote repo
 				tempDir := filepath.Join(os.TempDir(), utils.GenRandomString(6))

pkg/iac-providers/terraform/v12/testdata/deep-modules/modules/m4/main.tf

@@ -0,0 +1,14 @@
+variable "m4projectid" {
+    type = string
+    default = "asdfasdf"
+}
+
+module "m4a" {
+    source = "./modules/m4a"
+    m4aprojectid = var.m4projectid
+}
+
+resource "aws_s3_bucket" "bucket" {
+  bucket = var.m4projectid
+  policy = module.m4a.fullbucketpolicy
+}

pkg/iac-providers/terraform/v12/testdata/deep-modules/modules/m4/modules/m4a/main.tf

@@ -0,0 +1,23 @@
+variable "m4aprojectid" {
+    type = string
+    default = "asdfasdf"
+}
+
+module "m4b" {
+    source = "../m4b"
+    m4bversionyear = "2012" 
+    m4bversionmonth = "10" 
+    m4bversionday = "17" 
+    m4bbucketname = module.m4c.fullbucketname
+}
+module "m4c" {
+    source = "../m4c"
+    m4cbucketname = var.m4aprojectid
+    m4cenvironment = "dev"
+}
+
+
+resource "aws_s3_bucket" "bucket4a" {
+  bucket = module.m4c.fullbucketname
+  policy = module.m4b.fullbucketpolicy
+}

pkg/iac-providers/terraform/v12/testdata/deep-modules/modules/m4/modules/m4b/main.tf

@@ -0,0 +1,36 @@
+variable "m4bversionyear" {
+    type = string
+}
+variable "m4bversionmonth" {
+    type = string
+}
+variable "m4bversionday" {
+    type = string
+}
+variable "m4bbucketname" {
+    type = string
+}
+data "aws_iam_policy_document" "readbuckets" {
+    source_json = <<EOF
+{
+  "Version":"${var.m4bversionyear}-${var.m4bversionmonth}-${var.m4bversionday}",
+  "Statement":[
+    {
+      "Sid": "PublicRead",
+      "Effect": "Allow",
+      "Principal": "*",
+      "Action": ["s3:GetObject"],
+      "Resource": ["arn:aws:s3:::${var.m4bbucketname}/*"]
+    }
+  ]
+}
+EOF  
+}
+
+output "fullbucketpolicy" {
+    value = data.aws_iam_policy_document.readbuckets.json
+} 
+output "BucketARN" {
+    value = var.m4bbucketname
+} 
+

pkg/iac-providers/terraform/v12/testdata/deep-modules/modules/m4/modules/m4c/main.tf

@@ -0,0 +1,17 @@
+variable "m4cbucketname" {
+    type = string
+}
+variable "m4cenvironment" {
+    type = string
+}
+
+output "fullbucketname" {
+    value = "${var.m4cbucketname}-${var.m4cenvironment}"
+}
+output "sourcebucketname" {
+    value = var.m4cbucketname
+}
+output "sourceenvironment" {
+    value = var.m4cenvironment
+}
+

pkg/iac-providers/terraform/v12/testdata/deep-modules/template.tf

@@ -12,3 +12,8 @@ module "m1" {
     source = "./modules/m1"
     m1projectid = "tf-test-project"
 }
+
+module "m4" {
+    source = "./modules/m4"
+    m4projectid = "tf-test-project-2"
+}

pkg/iac-providers/terraform/v12/testdata/tfjson/deep-modules.json

@@ -10,6 +10,28 @@
         "bucket": "${module.m3.fullbucketname}",
         "policy": "${module.m2.fullbucketpolicy}"
       }
+    },
+    {
+      "id": "aws_s3_bucket.bucket",
+      "name": "bucket",
+      "source": "modules/m4/main.tf",
+      "line": 11,
+      "type": "aws_s3_bucket",
+      "config": {
+        "bucket": "tf-test-project-2",
+        "policy": "${module.m4a.fullbucketpolicy}"
+      }
+    },
+    {
+      "id": "aws_s3_bucket.bucket4a",
+      "name": "bucket4a",
+      "source": "modules/m4/modules/m4a/main.tf",
+      "line": 20,
+      "type": "aws_s3_bucket",
+      "config": {
+        "bucket": "${module.m4c.fullbucketname}",
+        "policy": "${module.m4b.fullbucketpolicy}"
+      }
     }
   ]
 }