Add sopds_util pg_optimize cmd for PostgreSQL Optimization

opds_catalog/management/commands/sopds_util.py

 from django.core.management.base import BaseCommand
 from django.core.management import call_command
 from django.db import transaction
+from django.db import connection
 from django.conf import settings as main_settings
 
 from opds_catalog import opdsdb
@@ -14,7 +15,7 @@ class Command(BaseCommand):
     verbose = False
         
     def add_arguments(self, parser):
-        parser.add_argument('command', action="store", nargs='*', help='Use [ clear | info | save_mygenres | load_mygenres | setconf | getconf ]') 
+        parser.add_argument('command', action="store", nargs='*', help='Use [ clear | info | save_mygenres | load_mygenres | setconf | getconf | pg_optimize ]')
         parser.add_argument('--verbose',action='store_true', dest='verbose', default=False, help='Set verbosity level for books collection scan.')  
         parser.add_argument('--nogenres',action='store_true', dest='nogenres', default=False, help='Not install genres fom fixtures.')              
 
@@ -40,6 +41,8 @@ class Command(BaseCommand):
         elif action == "getconf":
             self.confparam = options['command'][1] if len(options['command'])>1 else None
             self.getconf(self.confparam)
+        elif action == "pg_optimize":
+            self.pg_optimize()
 
     def clear(self):
         with transaction.atomic():
@@ -47,6 +50,7 @@ class Command(BaseCommand):
         if not self.nogenres:
             call_command('loaddata', 'genre.json', app_label='opds_catalog') 
         Counter.objects.update_known_counters()
+        opdsdb.pg_optimize(False)
         
     def info(self):
         Counter.objects.update_known_counters()
@@ -78,5 +82,9 @@ class Command(BaseCommand):
         else:
             call_command('constance', 'list', app_label='opds_catalog')
 
+    def pg_optimize(self):
+        opdsdb.pg_optimize(True)
+
+
             
 

opds_catalog/opdsdb.py

@@ -42,6 +42,17 @@ unknown_genre=_(unknown_genre_en)
 #
 utfhigh = re.compile(u'[\U00010000-\U0010ffff]')
 
+def pg_optimize(verbose=False):
+    """ TODO: Table optimizations for Postgre """
+    if connection.vendor != 'postgresql':
+        if verbose:
+            print('No PostgreSql connection backend detected...')
+    else:
+        cursor = connection.cursor()
+        cursor.execute('alter table opds_catalog_book SET ( fillfactor = 50)')
+        cursor.execute('VACUUM FULL opds_catalog_book')
+        print('PostgreSql tables internal structure optimized...')
+
 def clear_all(verbose=False):
     cursor = connection.cursor()
     cursor.execute('delete from opds_catalog_bseries')

opds_catalog/settings.py

@@ -28,7 +28,6 @@ from django.dispatch import receiver
 #        translation.activate(new_value)
 #        print(new_value)
 
-    
 def constance_update_all():
     pass