[AWS] EC2 instance launch template (#96)

internal/plan/json_getters.go

@@ -202,13 +202,12 @@ func getValue(key string, context *tfContext) (*valueWithUnit, error) {
 		unit := propertyMapping.Unit
 
 		for _, pathRaw := range paths {
-			if valueFound != nil {
+			if valueFound != nil && valueFound != ".not_found" {
 				break
 			}
 			path := pathRaw
 			if strings.Contains(pathRaw, "${") {
 				path, err = resolvePlaceholders(path, context)
-
 				if err != nil {
 					return nil, errors.Wrapf(err, "Cannot resolve placeholders for %v", path)
 				}
@@ -408,7 +407,7 @@ func getVariable(name string, contextParam *tfContext) (interface{}, error) {
 	if variablesMappings == nil {
 		context = contextParam.RootContext
 		if context != nil {
-			variablesMappings = context.Mapping.Variables
+			variablesMappings = context.RootContext.Mapping.Variables
 		}
 	}
 	if variablesMappings == nil {

internal/plan/mappings/aws/ec2_instance.yaml

@@ -10,7 +10,27 @@ compute_resource:
             - '.configuration'
             property: "region"
         instance_type:
-          - paths: '.values.instance_type'
+          - paths: 
+            - '.values.instance_type'
+            - '${launch_template}.values.instance_type'
+        launch_template:
+          - paths:
+            - '.configuration.root_module.resources[] | select(.address == "${this.address}") | .expressions.launch_template[]?.id?.references[]? | select(endswith(".id") or endswith(".name")) | gsub("\\.(id|name)$"; "")'
+            reference:
+              paths:
+                - cbf::all_select("address";  "${key}")
+                - cbf::all_select("address"; ("${key}" | split(".")[0:2] | join("."))) | .resources[] | select(.name",  ("${key}" | split(".")[2]))
+                - .prior_state.values.root_module.resources[] | select(.address == "${key}")
+              return_path: true
+        ami:
+          - paths:
+            - '"${this.values.ami}"'
+            - '${launch_template}.values.image_id'
+            reference:
+              paths:
+                - cbf::all_select("type"; "aws_ami") | select(.type == "aws_ami") | select(.values.image_id == "${key}")
+                - .prior_state.values.root_module.resources[] | select(.type == "aws_ami") | select(.values.image_id == "${key}")
+              return_path: true
     properties:
       name:
         - paths: ".name"
@@ -19,12 +39,14 @@ compute_resource:
       type:
         - paths: ".type"
       vCPUs:
-        - paths: ".values.instance_type"
+        - paths: 
+          - '"${instance_type}"'
           reference:
             json_file: aws_instances
             property: ".VCPU"
       memory:
-        - paths: ".values.instance_type"
+        - paths: 
+          - '"${instance_type}"'
           unit: mb
           reference:
             json_file: aws_instances
@@ -42,7 +64,8 @@ compute_resource:
       storage:
         - type: list
           item:
-            - paths: '.prior_state.values.root_module.resources[] | select(.values.image_id == "${this.values.ami}") | .values.block_device_mappings[].ebs | select(length > 0)'
+            - paths: 
+              - '${ami}.values.block_device_mappings[] | select(length > 0) | .ebs'
               properties:
                 size:
                   - paths: ".volume_size"
@@ -53,7 +76,9 @@ compute_resource:
                     default: standard
                     reference:
                       general: disk_types 
-            - paths: '.values.ebs_block_device[] | select(length > 0)'
+            - paths: 
+              - '.values.ebs_block_device[] | select(length > 0)'
+              - '${launch_template}.values.block_device_mappings[] | select(length > 0) | select(.virtual_name == null or .virtual_name == "" or (.virtual_name | startswith("ephemeral") | not)) | .ebs'
               properties:
                 size:
                   - paths: ".volume_size"
@@ -69,16 +94,20 @@ compute_resource:
                     default: standard
                     reference:
                       general: disk_types
-            - paths: '.values.ephemeral_block_device[] | select(length > 0)'
+            - paths: 
+              - '.values.ephemeral_block_device[] | select(length > 0)'
+              - '${launch_template}.values.block_device_mappings[] | select(length > 0) | select(.virtual_name != null and (.virtual_name | startswith("ephemeral")))'
               properties:
                 size:
-                  - paths: '"${instance_type}"'
+                  - paths: 
+                    - '"${instance_type}"'
                     unit: gb
                     reference:
                       json_file: aws_instances
                       property: ".InstanceStorage.SizePerDiskGB"
                 type:
-                  - paths: '"${instance_type}"'
+                  - paths: 
+                    - '"${instance_type}"'
                     default: standard
                     reference:
                       json_file: aws_instances

internal/plan/mappings/aws/general.yaml

@@ -15,4 +15,5 @@ general:
     ignored_resources: 
       - "aws_vpc"
       - "aws_volume_attachment"
-      - "aws_launch_configuration"
+      - "aws_launch_configuration"
+      - "aws_launch_template"

internal/plan/test/resources_aws_test.go

@@ -76,6 +76,24 @@ func TestGetResource_EC2(t *testing.T) {
 				Count:        1,
 			},
 		},
+		"aws_instance.ec2_with_lt": resources.ComputeResource{
+			Identification: &resources.ResourceIdentification{
+				Address:           "aws_instance.ec2_with_lt",
+				Name:              "ec2_with_lt",
+				ResourceType:      "aws_instance",
+				Provider:          providers.AWS,
+				Region:            "eu-west-3",
+				Count:             1,
+				ReplicationFactor: 1,
+			},
+			Specs: &resources.ComputeResourceSpecs{
+				VCPUs:    int32(4),
+				MemoryMb: int32(16384),
+
+				HddStorage: decimal.NewFromInt(300),
+				SsdStorage: decimal.NewFromInt(30 + 150),
+			},
+		},
 	}
 	tfPlan, err := terraform.TerraformPlan()
 	assert.NoError(t, err)

test/terraform/aws_ec2/ec2_launch_template.tf

@@ -0,0 +1,28 @@
+resource "aws_launch_template" "my_launch_template" {
+  name_prefix   = "my_launch_template"
+  image_id      = "${data.aws_ami.ubuntu.id}"
+  instance_type = "m5d.xlarge"
+
+  block_device_mappings {
+    device_name = "/dev/sda1"
+
+    ebs {
+      volume_size = 300
+      volume_type = "standard"
+      delete_on_termination = true
+    }
+  }
+
+  block_device_mappings {
+    device_name  = "/dev/sdb"
+    virtual_name = "ephemeral0"
+  }
+
+}
+
+resource "aws_instance" "ec2_with_lt" {
+    launch_template {
+        id      = "${aws_launch_template.my_launch_template.id}"
+        version = "$$Latest"
+    }
+}