euscanwww/tasks: simplify tasks

- strip '_task' end
- remove "launcher" functions, if we want complicated starter
  functions we will put them somewhere else later.
- now, everything is asynchroneous, maybe we could switch from
  group_one()/group_chunks() to .chunks() someday...

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>

euscanwww/djeuscan/processing/scan/scan_portage.py

@@ -342,9 +342,14 @@ def scan_portage(packages=None, category=None, no_log=False,
 
     if prefetch:
         logger.info('Prefetching objects...')
-        for package in Package.objects.all():
+        ppackages = Package.objects.all()
+        pversions = Version.objects.select_related('package').all()
+        if category:
+            ppackages = ppackages.filter(category=category)
+            pversions = pversions.filter(package__category=category)
+        for package in ppackages:
             scan_handler.cache_store_package(package)
-        for version in Version.objects.select_related('package').all():
+        for version in pversions:
             scan_handler.cache_store_version(version)
         logger.info('done')
 

euscanwww/djeuscan/processing/scan/scan_upstream.py

@@ -153,9 +153,12 @@ def scan_upstream(packages=None, purge_versions=False,
 
     for pkg in packages:
         try:
-            scan_handler.scan('%s/%s' % (pkg.category, pkg.name))
+            package = '%s/%s' % (pkg.category, pkg.name)
         except AttributeError:
-            scan_handler.scan(pkg)
+            package = pkg
+
+        logger.info('Scanning %s' % package)
+        scan_handler.scan(package)
 
     scan_handler.purge_old_versions()