[PATCH pve-storage v4 06/17] api: plugins/storage/plugin: add plugins' 'content' to their metadata

["Max R. Carrara" <m.carrara@proxmox.com>]

Return the content types that a plugin supports, as well as the ones it
enables by default, from the 'content' entry of its `plugindata()`.

The UI needs these to offer only the supported content types when
adding or editing a storage of a custom plugin, and to preselect the
default ones when adding it. This information is not part of the
property schema, as the 'content' property is shared by all plugins.

Signed-off-by: Max R. Carrara <m.carrara@proxmox.com>
---
 src/PVE/API2/Plugins/Storage/Plugin.pm | 27 ++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/PVE/API2/Plugins/Storage/Plugin.pm b/src/PVE/API2/Plugins/Storage/Plugin.pm
index dbede811..906724ba 100644
--- a/src/PVE/API2/Plugins/Storage/Plugin.pm
+++ b/src/PVE/API2/Plugins/Storage/Plugin.pm
@@ -16,10 +16,31 @@ my $ALL_PLUGIN_TYPES = PVE::Storage::Plugin->lookup_types();
 
 my $PLUGIN_METADATA_SCHEMA = {
     type => 'object',
     additionalProperties => 0,
     properties => {
+        content => {
+            type => 'object',
+            optional => 0,
+            properties => {
+                supported => {
+                    type => 'array',
+                    optional => 0,
+                    items => {
+                        type => 'string',
+                    },
+                },
+                default => {
+                    type => 'array',
+                    optional => 0,
+                    items => {
+                        type => 'string',
+                    },
+                },
+            },
+            additionalProperties => 0,
+        },
         module => {
             type => 'string',
             optional => 0,
         },
         schema => {
@@ -88,11 +109,17 @@ my sub build_plugin_metadata : prototype($) ($type) {
     my $plugin = eval { PVE::Storage::Plugin->lookup($type) };
     if ($@) {
         raise("Plugin '$type' not found - $@", code => HTTP_NOT_FOUND);
     }
 
+    my $plugindata = $plugin->plugindata();
+
     return {
+        content => {
+            supported => [sort keys $plugindata->{content}->[0]->%*],
+            default => [sort keys $plugindata->{content}->[1]->%*],
+        },
         module => $plugin,
         schema => get_schema_for_plugin($plugin),
         type => $type,
     };
 }
-- 
2.47.3