meta-digi-containers: modify how to generate the DCP

Modify and document the way to generate a DCP by package_id.
Update the source code of the container manager to align with.

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>

meta-digi-containers/README.md

@@ -78,13 +78,11 @@ The script generates exactly one runtime artifact per execution.
 Notes:
 
 - `--output-dir` is optional. If omitted, the script writes the DCP to the current directory.
-- If the input manifest omits `package_id`, the generator derives the final
-  `package_id` from `name` and appends a unique suffix using the `created_at`
-  timestamp encoded in base36 milliseconds.
-- If the input manifest provides `package_id`, that value is kept unchanged.
-- The output file name is always derived from the generated package ID and
+- The input manifest must provide `package_id`, which becomes the stable target
+  identifier.
+- The output file name is always derived from the package ID and
   manifest fields as:
-  - `<generated_package_id>-<runtime>-<device_types[0]>.tar.gz`
+  - `<package_id>-<runtime>-<device_types[0]>.tar.gz`
 - For Podman payloads, the final internal payload name is always `payload/image.tar`
 - For LXC payloads, the generator requires a Yocto-style `.tar.gz` bundle, validates its layout,
   and stores it inside the DCP using the original file name and format without re-packaging it.
@@ -104,14 +102,13 @@ python3 meta-digi-containers/scripts/generate-dcp.py \
 
 This generates a bundle named like:
 
-- `./flutter-demo-<base36_created_at_ms>-podman-ccmp25-dvk.tar.gz`
+- `./flutter-demo-podman-ccmp25-dvk.tar.gz`
 
 In those manifests:
 
-- `name` is the stable logical container name stored on the target.
+- `package_id` is the stable target identifier.
 - `friendly_name` is the user-facing label shown by the manager output when available.
-- the final `package_id` is generated automatically from `name` unless the
-  input manifest provides an explicit `package_id`
+- the final DCP manifest does not include a second container identifier
 - `registration_defaults` is limited to local manager policy such as `autostart`,
   `monitor`, and `restart`; this release does not generate DRM-specific defaults
 
@@ -182,19 +179,12 @@ Outputs are generated in:
 
 Final outputs:
 
-- `${DCP_NAME}-<base36_created_at_ms>-podman-<device_types[0]>.tar.gz`
-- `${DCP_NAME}-<base36_created_at_ms>-lxc-<device_types[0]>.tar.gz`
+- `${DCP_NAME}-podman-<device_types[0]>.tar.gz`
+- `${DCP_NAME}-lxc-<device_types[0]>.tar.gz`
 
 Notes:
 
-- The generator script derives `package_id` from the input `name` only when the
-  manifest does not provide one explicitly. In that default case it appends a
-  base36-encoded millisecond timestamp suffix, stores the generated `package_id`
-  in the final `manifest.json`, and uses it in the DCP file name.
-- In Yocto builds, `dey-image-dcp` keeps that unique-name behavior and
-  removes older DCP artifacts with the same `${DCP_NAME}` prefix before
-  generating the new one, so the deploy directory does not keep accumulating
-  previous builds of the same container/runtime.
+- In Yocto builds, `dey-image-dcp` sets `package_id` to `${DCP_NAME}`.
 
 Intermediate rootfs and OCI outputs are kept available for incremental rebuilds.
 The LXC bundle and Podman archive are generated as temporary payloads while
@@ -281,7 +271,6 @@ Supported placeholders in LXC config fragments:
 The artifact manifest is generated automatically and includes:
 
 - `package_id`
-- `name` [stable logical container name]
 - `friendly_name` [optional user-facing display name]
 - `version`
 - `runtime`

meta-digi-containers/examples/manifest-lxc.json

@@ -1,5 +1,5 @@
 {
-  "name": "flutter-demo",
+  "package_id": "flutter-demo",
   "friendly_name": "Flutter Demo",
   "version": "1.0",
   "runtime": "lxc",

meta-digi-containers/examples/manifest-podman.json

@@ -1,5 +1,5 @@
 {
-  "name": "flutter-demo",
+  "package_id": "flutter-demo",
   "friendly_name": "Flutter Demo",
   "version": "1.0",
   "runtime": "podman",

meta-digi-containers/recipes-containers/cc-container-mng/cc-container-mng_1.0.0.bb

@@ -15,8 +15,8 @@ SRC_URI = " \
     file://cc-containerd.service \
     file://cc-containerd-shutdown.service \
 "
-SRC_URI[archive.md5sum] = "6d84c6f5ec9dc94d542c91001ff5fd36"
-SRC_URI[archive.sha256sum] = "ce24c4fde041a69a7646eb9bad4891d2eb91291f3534e71444552d3830247aaa"
+SRC_URI[archive.md5sum] = "2ae2c3c09e9bf223e7de4ec0994376f3"
+SRC_URI[archive.sha256sum] = "627d90eb53a48bf978fb6993f661af3dba8e6bf091d295ff481457e4c0cb96a0"
 
 S = "${WORKDIR}/${BP}"
 

meta-digi-containers/recipes-core/images/dey-image-dcp-artifact.inc

@@ -15,9 +15,9 @@ do_clean_old_container_artifacts() {
     fi
 
     for runtime in lxc podman; do
-        old_artifact_glob="${DEPLOY_DIR_IMAGE}/${DCP_NAME}-*-${runtime}-${primary_device_type}.tar.gz"
-        bbnote "Removing old ${runtime} container artifacts matching ${old_artifact_glob}"
-        rm -f ${old_artifact_glob}
+        artifact_path="${DEPLOY_DIR_IMAGE}/${DCP_NAME}-${runtime}-${primary_device_type}.tar.gz"
+        bbnote "Removing old ${runtime} container artifact ${artifact_path}"
+        rm -f "${artifact_path}"
     done
 }
 
@@ -69,7 +69,7 @@ do_image_container_artifacts() {
         manifest_path="$2"
         create_args="$3"
         build_id="$4"
-        NAME="${DCP_NAME}" \
+        PACKAGE_ID="${DCP_NAME}" \
         FRIENDLY_NAME="${CONTAINER_FRIENDLY_NAME}" \
         VERSION="${CONTAINER_ARTIFACT_VERSION}" \
         RUNTIME="${runtime}" \
@@ -87,7 +87,7 @@ do_image_container_artifacts() {
         LABELS_JSON="${CONTAINER_ARTIFACT_LABELS_JSON}" \
         python3 -c 'import json, os, sys; \
 parse_bool = lambda name: os.environ[name].strip().lower() == "true"; \
-payload = {"name": os.environ["NAME"], "friendly_name": os.environ["FRIENDLY_NAME"], "version": os.environ["VERSION"], "runtime": os.environ["RUNTIME"], "registration_defaults": {"autostart": parse_bool("AUTOSTART"), "monitor": parse_bool("MONITOR"), "restart": {"enabled": parse_bool("RESTART_ENABLED"), "max_retries": int(os.environ["RESTART_MAX_RETRIES"]), "window": int(os.environ["RESTART_WINDOW"]), "retry_delay": int(os.environ["RESTART_RETRY_DELAY"]) } }, "device_types": json.loads(os.environ["DEVICE_TYPES_JSON"]), "firmware_versions": os.environ["FIRMWARE_VERSIONS"], "build_id": os.environ["BUILD_ID"], "description": os.environ["DESCRIPTION"], "labels": json.loads(os.environ["LABELS_JSON"])}; \
+payload = {"package_id": os.environ["PACKAGE_ID"], "friendly_name": os.environ["FRIENDLY_NAME"], "version": os.environ["VERSION"], "runtime": os.environ["RUNTIME"], "registration_defaults": {"autostart": parse_bool("AUTOSTART"), "monitor": parse_bool("MONITOR"), "restart": {"enabled": parse_bool("RESTART_ENABLED"), "max_retries": int(os.environ["RESTART_MAX_RETRIES"]), "window": int(os.environ["RESTART_WINDOW"]), "retry_delay": int(os.environ["RESTART_RETRY_DELAY"]) } }, "device_types": json.loads(os.environ["DEVICE_TYPES_JSON"]), "firmware_versions": os.environ["FIRMWARE_VERSIONS"], "build_id": os.environ["BUILD_ID"], "description": os.environ["DESCRIPTION"], "labels": json.loads(os.environ["LABELS_JSON"])}; \
 create_args = os.environ["CREATE_ARGS"].strip(); \
 payload.update({"create_args": create_args} if create_args else {}); \
 open(sys.argv[1], "w", encoding="utf-8").write(json.dumps(payload, indent=2) + "\n")' \

meta-digi-containers/scripts/generate-dcp.py

@@ -15,32 +15,15 @@ import sys
 import tarfile
 import tempfile
 
-BASE36_ALPHABET = "0123456789abcdefghijklmnopqrstuvwxyz"
 
 def fail(message: str) -> "NoReturn":
     raise SystemExit(f"error: {message}")
 
 
-def to_base36(value: int) -> str:
-    if value < 0:
-        fail("cannot convert negative values to base36")
-    if value == 0:
-        return "0"
-    result: list[str] = []
-    while value:
-        value, remainder = divmod(value, 36)
-        result.append(BASE36_ALPHABET[remainder])
-    return "".join(reversed(result))
-
-
 def format_created_at(timestamp: datetime) -> str:
     return timestamp.astimezone(timezone.utc).isoformat(timespec="milliseconds").replace("+00:00", "Z")
 
 
-def build_generated_package_id(base_name: str, *, created_at_ms: int) -> str:
-    return f"{base_name}-{to_base36(created_at_ms)}"
-
-
 def load_manifest(path: Path) -> dict:
     try:
         data = json.loads(path.read_text(encoding="utf-8"))
@@ -100,11 +83,7 @@ def validate_labels(value: object) -> dict:
 
 
 def validate_manifest(data: dict) -> dict:
-    package_id = data.get("package_id")
-    if package_id is not None:
-        if not isinstance(package_id, str) or not package_id.strip():
-            fail("invalid manifest: package_id must be a non-empty string")
-        package_id = package_id.strip()
+    package_id = validate_string(data, "package_id", path="manifest")
     version = validate_string(data, "version", path="manifest")
     runtime = validate_string(data, "runtime", path="manifest")
     if runtime not in {"lxc", "podman"}:
@@ -136,7 +115,6 @@ def validate_manifest(data: dict) -> dict:
     description = data.get("description", "")
     if description is not None and not isinstance(description, str):
         fail("invalid manifest: description must be a string")
-    name = validate_string(data, "name", path="manifest")
     friendly_name = data.get("friendly_name")
     if friendly_name is not None:
         if not isinstance(friendly_name, str) or not friendly_name.strip():
@@ -145,7 +123,6 @@ def validate_manifest(data: dict) -> dict:
 
     validated = {
         "package_id": package_id,
-        "name": name,
         "friendly_name": friendly_name,
         "version": version,
         "runtime": runtime,
@@ -269,7 +246,6 @@ def build_final_manifest(
 ) -> dict:
     output = {
         "package_id": package_id,
-        "name": base["name"],
         "friendly_name": base["friendly_name"],
         "version": base["version"],
         "runtime": base["runtime"],
@@ -332,18 +308,10 @@ def main() -> int:
         fail(f"cannot create output directory {output_dir}: {exc}")
 
     created_at_dt = datetime.now(timezone.utc)
-    created_at_ms = int(created_at_dt.timestamp() * 1000)
     created_at = format_created_at(created_at_dt)
-    generated_package_id = (
-        manifest["package_id"]
-        if manifest["package_id"]
-        else build_generated_package_id(
-            manifest["name"],
-            created_at_ms=created_at_ms,
-        )
-    )
+    package_id = manifest["package_id"]
     output_name = build_output_name(
-        package_id=generated_package_id,
+        package_id=package_id,
         runtime=manifest["runtime"],
         device_type=manifest["device_types"][0],
     )
@@ -375,7 +343,7 @@ def main() -> int:
 
         final_manifest = build_final_manifest(
             manifest,
-            package_id=generated_package_id,
+            package_id=package_id,
             artifact_type=artifact_type,
             digest=digest,
             size_bytes=size_bytes,
@@ -389,7 +357,7 @@ def main() -> int:
             lambda dst: write_default_readme(
                 dst,
                 manifest,
-                package_id=generated_package_id,
+                package_id=package_id,
                 created_at=created_at,
                 payload_name=payload_name,
             ),