Added: Support for per-component/arch Release files

Rework creation of legacy release files.

Restore CHANGES.md

Author: DEiselt

CHANGES.md

@@ -72,9 +72,7 @@
 
 ## 3.5.2 (2025-04-23) {: #3.5.2 }
 
-#### Features {: #3.5.1-feature }
-
-- Added compatibility with pulpcore 3.70+.
+No significant changes.
 
 ---
 

CHANGES/1175.feature

@@ -0,0 +1 @@
+Support per-component/architecture Release files for cross-validation by related installers (i.e. ubiquity and debian-installer).

pulp_deb/app/tasks/publishing.py

@@ -306,6 +306,7 @@ def __init__(self, parent, component):
         self.plain_component = os.path.basename(component)
         self.package_index_files = {}
         self.source_index_file_info = None
+        self.release_file_paths = {}
 
         for architecture in self.parent.architectures:
             package_index_path = os.path.join(
@@ -320,6 +321,18 @@ def __init__(self, parent, component):
                 open(package_index_path, "wb"),
                 package_index_path,
             )
+
+            release_path = os.path.join(
+                "dists",
+                self.parent.dists_subfolder,
+                self.plain_component,
+                "binary-{}".format(architecture),
+                "Release",
+            )
+
+            self.release_file_paths[architecture] = _write_legacy_release_file(self, architecture)
+
+
         # Source indicies file
         source_index_path = os.path.join(
             "dists",
@@ -451,6 +464,13 @@ def finish(self):
             self.parent.add_metadata(source_index)
             self.parent.add_metadata(gz_source_index)
 
+        # Publish per-component/architecture Release files
+        for release_path in self.release_file_paths.values():
+            release = PublishedMetadata.create_from_file(
+                publication=self.parent.publication, file=File(open(release_path, "rb"))
+            )
+            self.parent.add_metadata(release)
+
     def generate_by_hash(self, index_path, index, gz_index_path, gz_index):
         for path, index in (
             (index_path, index),
@@ -477,6 +497,7 @@ def __init__(
         temp_dir,
         signing_service=None,
     ):
+        self._release = release
         self.publication = publication
         self.temp_env = {"PULP_TEMP_WORKING_DIR": _create_random_directory(temp_dir)}
         self.distribution = distribution = release.distribution
@@ -608,3 +629,36 @@ def _create_random_directory(path):
     dir_path = path + "/" + dir_name
     os.makedirs(dir_path, exist_ok=True)
     return dir_path
+
+
+def _write_legacy_release_file(component, arch):
+    """
+    Add legacy per-architecture release files
+    https://wiki.debian.org/DebianRepository/Format#Legacy_per-component-and-architecture_Release_files
+    :param component: ComponentHelper instance this belongs to.
+    :param arch: target architecture
+    :return: relative path of the release file
+    """
+
+    rel = deb822.Release()
+
+    parent_release = component.parent.release
+    rel["Archive"] = parent_release.get("Suite", parent_release["Codename"])
+    rel["Origin"] = parent_release.get("Origin", "Pulp 3")
+    rel["Label"] = parent_release.get("Label", "Pulp 3")
+    if settings.APT_BY_HASH:
+        rel["Acquire-By-Hash"] = settings.APT_BY_HASH
+    rel["Component"] = component.plain_component
+    rel["Architecture"] = arch
+
+    rel_path = os.path.join(
+        "dists",
+        component.parent.dists_subfolder,
+        component.plain_component,
+        f"binary-{arch}",
+        "Release",
+    )
+    os.makedirs(os.path.dirname(rel_path), exist_ok=True)
+    with open(rel_path, "wb") as fh:
+        rel.dump(fh)
+    return rel_path