[OE-core][PATCH v5 2/8] classes-recipe/baremetal-image: Add image file manifest

[Joshua Watt <jpewhacker@gmail.com>]

Downstream tasks may want to know what image files were written so write
out a manifest in do_image_complete. The format of the manifest is the
same as the one in image.bbclass

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 meta/classes-recipe/baremetal-image.bbclass | 32 +++++++++++++++++++--
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/meta/classes-recipe/baremetal-image.bbclass b/meta/classes-recipe/baremetal-image.bbclass
index 4e7d413626e..7938c0a83f1 100644
--- a/meta/classes-recipe/baremetal-image.bbclass
+++ b/meta/classes-recipe/baremetal-image.bbclass
@@ -30,6 +30,9 @@ BAREMETAL_BINNAME ?= "hello_baremetal_${MACHINE}"
 IMAGE_LINK_NAME ?= "baremetal-helloworld-image-${MACHINE}"
 IMAGE_NAME_SUFFIX ?= ""
 
+IMAGE_OUTPUT_MANIFEST_DIR = "${WORKDIR}/deploy-image-output-manifest"
+IMAGE_OUTPUT_MANIFEST = "${IMAGE_OUTPUT_MANIFEST_DIR}/manifest.json"
+
 do_rootfs[dirs] = "${IMGDEPLOYDIR} ${DEPLOY_DIR_IMAGE}"
 
 do_image(){
@@ -37,8 +40,28 @@ do_image(){
     install ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.elf ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.elf
 }
 
-do_image_complete(){
-    :
+python do_image_complete(){
+    from pathlib import Path
+    import json
+
+    data = {
+        "taskname": "do_image",
+        "imagetype": "baremetal-image",
+        "images": []
+    }
+
+    img_deploy_dir = Path(d.getVar("IMGDEPLOYDIR"))
+
+    for child in img_deploy_dir.iterdir():
+        if not child.is_file() or child.is_symlink():
+            continue
+
+        data["images"].append({
+            "filename": child.name,
+        })
+
+    with open(d.getVar("IMAGE_OUTPUT_MANIFEST"), "w") as f:
+        json.dump([data], f)
 }
 
 python do_rootfs(){
@@ -62,6 +85,7 @@ python do_rootfs(){
     bb.utils.mkdirhier(sysconfdir)
 
     execute_pre_post_process(d, d.getVar('ROOTFS_POSTPROCESS_COMMAND'))
+    execute_pre_post_process(d, d.getVar("ROOTFS_POSTUNINSTALL_COMMAND"))
 }
 
 
@@ -72,6 +96,8 @@ SSTATE_SKIP_CREATION:task-image-complete = '1'
 do_image_complete[sstate-inputdirs] = "${IMGDEPLOYDIR}"
 do_image_complete[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"
 do_image_complete[stamp-extra-info] = "${MACHINE_ARCH}"
+do_image_complete[sstate-plaindirs] += "${IMAGE_OUTPUT_MANIFEST_DIR}"
+do_image_complete[dirs] += "${IMAGE_OUTPUT_MANIFEST_DIR}"
 addtask do_image_complete after do_image before do_build
 
 python do_image_complete_setscene () {
@@ -140,5 +166,5 @@ python(){
                 else:
                     deps += " %s:%s" % (dep, task)
         return deps
-    d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_populate_sysroot')) 
+    d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_populate_sysroot'))
 }
-- 
2.45.2