Only fetch one commit for the latest revision

src/api/app/controllers/webui/package_controller.rb

@@ -100,6 +100,8 @@ def show
 
     @services = @files.any? { |file| file[:name] == '_service' }
 
+    @package.cache_revisions(@revision)
+
     respond_to do |format|
       format.html
       format.js

src/api/app/lib/backend/api/sources/package.rb

@@ -33,8 +33,10 @@ def self.files(project_name, package_name, options = {})
 
         # Returns the revisions (mrev) list for a package
         # @return [String]
-        def self.revisions(project_name, package_name)
-          http_get(['/source/:project/:package/_history', project_name, package_name], params: { meta: 1, deleted: 1 })
+        def self.revisions(project_name, package_name, options = {})
+          http_get(['/source/:project/:package/_history', project_name, package_name], params: options,
+                                                                                       accepted: [:meta, :rev, :deleted, :limit],
+                                                                                       defaults: { meta: 1, deleted: 1 })
         end
 
         # Returns the meta file from a package

src/api/app/models/package.rb

@@ -1207,10 +1207,9 @@ def serviceinfo
     {}
   end
 
-  def parse_all_history
-    answer = source_file('_history')
-
-    doc = Xmlhash.parse(answer)
+  def cache_revisions(revision = nil)
+    opts = revision ? { rev: revision } : {}
+    doc = Xmlhash.parse(Backend::Api::Sources::Package.revisions(project.name, name, opts))
     doc.elements('revision') do |s|
       Rails.cache.write(['history', self, s['rev']], s)
       Rails.cache.write(['history_md5', self, s.get('srcmd5')], s)
@@ -1231,7 +1230,7 @@ def commit(rev = nil)
     commit = fetch_rev_from_history_cache(rev)
     return commit if commit
 
-    parse_all_history
+    cache_revisions
     # now it has to be in cache
     fetch_rev_from_history_cache(rev)
   end