Report outdated packages imported from a different channel

Some Apertis packages come from a different Debian release. In order keep
them in sync, active descendant branches are analyzed to determine in which
apertis versions they landed. Then, this information is used to report on the
dashboard which apertis releases need to be updated.

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

bin/packaging-updates

@@ -30,6 +30,19 @@ def sources_for_branches(data, branchnames):
 def compute_updates(data):
     ret = {"packages": {}}
 
+    def channel_is_active(channel):
+        return channel.get("status") == "active"
+
+    def get_channel_base(channel):
+        return channel.get("base")
+
+    channels = data["channels"]
+    channels_keys = set(channels.keys())
+    base_channels = {get_channel_base(channels[name]) for name in channels_keys}
+    active_channels = {
+        name for name in base_channels if channel_is_active(channels[name])
+    }
+
     def updatable(package, base, branch, upstream):
         msg = f"Branch {package.git['path_with_namespace']}:{branch.name}/{branch.version}"
         if base and base != branch:
@@ -45,6 +58,13 @@ def compute_updates(data):
             "upstream": upstream,
         }
 
+        if hasattr(branch, "descendant_branches"):
+            descendant_channels = set(b for b in branch.descendant_branches)
+            active_descendant_channels = descendant_channels.intersection(
+                active_channels
+            )
+            update["downstreams"] = list(active_descendant_channels)
+
         if base:
             update["base"] = {"name": base.name, "version": base.version}
         p = ret["packages"].setdefault(package.name, {})

templates/index.html.jinja2

@@ -234,6 +234,9 @@
           {%- for channel in channels.values() if channel.source.distribution+"/"+channel.source.release == sources[report.upstream.source].base -%}
             {{- report_channels.append(channel.base) or "" -}}
           {%- endfor -%}
+          {%- for downstream in report.downstreams -%}
+            {{- report_channels.append(channels[downstream].base) or "" -}}
+          {%- endfor -%}
         {%- elif report.branch in sources -%}
           {%- for channel in channels.values() if channel.source.distribution+"/"+channel.source.release == sources[report.branch].base -%}
             {{- report_channels.append(channel.base) or "" -}}