fix source_image_name packer parse

Author: bertiethorpe

.github/workflows/fatimage.yml

@@ -34,6 +34,17 @@ jobs:
       ANSIBLE_FORCE_COLOR: True
       OS_CLOUD: openstack
       CI_CLOUD: ${{ github.event.inputs.ci_cloud }}
+      SOURCE_IMAGES_MAP: |
+        {
+          "RL8": {
+            "openstack.openhpc": "rocky-latest-RL8",
+            "openstack.openhpc-cuda": "rocky-latest-cuda-RL8"
+          },
+          "RL9": {
+            "openstack.openhpc": "rocky-latest-RL9",
+            "openstack.openhpc-cuda": "rocky-latest-cuda-RL9"
+          }
+        }
 
     steps:
       - uses: actions/checkout@v2
@@ -77,17 +88,13 @@ jobs:
           cd packer/
           packer init .
 
-          if [[ "${{ matrix.build }}" == *"cuda"* ]]; then
-            SOURCE_IMAGE_NAME="rocky-latest-cuda"
-          else
-            SOURCE_IMAGE_NAME="rocky-latest"
-          fi
+          SOURCE_IMAGE=${{ fromJSON(env.SOURCE_IMAGES_MAP)[matrix.os_version][matrix.build] }}
 
           PACKER_LOG=1 packer build \
           -on-error=${{ vars.PACKER_ON_ERROR }} \
           -only=${{ matrix.build }} \
           -var-file=$PKR_VAR_environment_root/${{ env.CI_CLOUD }}.pkrvars.hcl \
-          -var "source_image_name={\"${{ matrix.os_version }}\":\"${SOURCE_IMAGE_NAME}-${{ matrix.os_version }}\"}" \
+          -var "source_image_name=${SOURCE_IMAGE}" \
           openstack.pkr.hcl
         env:
           PKR_VAR_os_version: ${{ matrix.os_version }}

.github/workflows/nightlybuild.yml

@@ -37,6 +37,12 @@ jobs:
       ANSIBLE_FORCE_COLOR: True
       OS_CLOUD: openstack
       CI_CLOUD: ${{ github.event.inputs.ci_cloud || vars.CI_CLOUD }}
+      SOURCE_IMAGES_MAP: |
+        {
+          "RL8": "Rocky-8-GenericCloud-Base-8.9-20231119.0.x86_64.qcow2",
+          "RL9": "Rocky-9-GenericCloud-Base-9.4-20240523.0.x86_64.qcow2"
+        }
+
     steps:
       - uses: actions/checkout@v2
 
@@ -79,10 +85,13 @@ jobs:
           cd packer/
           packer init .
 
+          SOURCE_IMAGE=${{ fromJSON(env.SOURCE_IMAGES_MAP)[matrix.os_version] }}
+
           PACKER_LOG=1 packer build \
           -on-error=${{ vars.PACKER_ON_ERROR }} \
           -only=${{ matrix.build }} \
           -var-file=$PKR_VAR_environment_root/${{ env.CI_CLOUD }}.pkrvars.hcl \
+          -var "source_image_name=${SOURCE_IMAGE}"
           openstack.pkr.hcl
 
         env:

packer/openstack.pkr.hcl

@@ -47,12 +47,8 @@ variable "os_version" {
 
 # Must supply either source_image_name or source_image_id
 variable "source_image_name" {
-  type = map(string)
-  description = "name of source image, keyed from var.os_version"
-  default = {
-    RL8: "Rocky-8-GenericCloud-Base-8.9-20231119.0.x86_64.qcow2"
-    RL9: "Rocky-9-GenericCloud-Base-9.4-20240523.0.x86_64.qcow2"
-  }
+  type = string
+  description = "name of source image"
 }
 
 variable "source_image" {
@@ -173,8 +169,8 @@ source "openstack" "openhpc" {
   security_groups = var.security_groups
 
   # Input image:
-  source_image = "${var.source_image[var.os_version]}"
-  source_image_name = "${var.source_image_name[var.os_version]}" # NB: must already exist in OpenStack
+  source_image = "${var.source_image}"
+  source_image_name = "${var.source_image_name}" # NB: must already exist in OpenStack
 
   # SSH:
   ssh_username = var.ssh_username