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authorDan McGee <dan@archlinux.org>2010-12-21 21:23:55 -0600
committerDan McGee <dan@archlinux.org>2011-02-22 15:58:06 -0600
commiteeff0749d86ec403e55dc626034991638edad619 (patch)
treeed3fda7ceea51e9f70482934201ef50fc9972b70
parent838b36f0a65dd58d49ca3541fb8abaeb72529683 (diff)
Add migration to split package files into parts
This datamigration is a bit more tricky and we do some DB-specific stuff so it can be done a lot faster- we are dealing with millions of rows in this migration in production. Signed-off-by: Dan McGee <dan@archlinux.org>
-rw-r--r--main/migrations/0041_move_package_files_data.py186
1 files changed, 186 insertions, 0 deletions
diff --git a/main/migrations/0041_move_package_files_data.py b/main/migrations/0041_move_package_files_data.py
new file mode 100644
index 00000000..31eecaa5
--- /dev/null
+++ b/main/migrations/0041_move_package_files_data.py
@@ -0,0 +1,186 @@
+# encoding: utf-8
+from south.db import db
+from south.v2 import DataMigration
+from django.db import models
+from django.db.models import F
+
+class Migration(DataMigration):
+
+ def forwards(self, orm):
+ # Handle the paths that are directories first
+ orm.PackageFile.objects.filter(path__endswith='/').update(
+ is_directory=True, directory=F('path'))
+
+ if db.backend_name == 'mysql':
+ db.execute("UPDATE package_files "
+ "SET filename = SUBSTRING_INDEX(path, '/', -1), "
+ "directory = SUBSTRING(path, 1, LENGTH(path) - INSTR(REVERSE(path), '/') + 1) "
+ "WHERE is_directory = 0")
+ elif db.backend_name == 'postgresql':
+ db.execute("UPDATE package_files "
+ "SET filename = substring(filename, '.*/(.*?)$'), "
+ "directory = substring(filename, '.*/') "
+ "WHERE is_directory = 0")
+ else:
+ # Sucks that we can't always do this in one query at the DB level...
+ files = orm.PackageFile.objects.filter(is_directory=False)
+ for f in files:
+ parts = f.path.rsplit('/', 1)
+ db.execute("UPDATE package_files "
+ "SET filename = %s, "
+ "directory = %s "
+ "WHERE id = %s",
+ (parts[1], parts[0] + '/', f.id))
+ # We could do this, but then Django takes forever to generate
+ # basically the same query for every row.
+ #f.filename = parts[1]
+ #f.directory = parts[0] + '/'
+ #f.save()
+
+ def backwards(self, orm):
+ orm.PackageFile.objects.all().update(is_directory=False,
+ directory='', filename=None)
+
+
+ models = {
+ 'auth.group': {
+ 'Meta': {'object_name': 'Group'},
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+ 'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+ },
+ 'auth.permission': {
+ 'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+ 'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+ },
+ 'auth.user': {
+ 'Meta': {'object_name': 'User'},
+ 'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+ 'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+ 'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+ 'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+ 'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+ 'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+ 'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+ 'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+ 'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+ },
+ 'contenttypes.contenttype': {
+ 'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+ 'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+ },
+ 'main.arch': {
+ 'Meta': {'ordering': "['name']", 'object_name': 'Arch', 'db_table': "'arches'"},
+ 'agnostic': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'})
+ },
+ 'main.donor': {
+ 'Meta': {'ordering': "['name']", 'object_name': 'Donor', 'db_table': "'donors'"},
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+ 'visible': ('django.db.models.fields.BooleanField', [], {'default': 'True'})
+ },
+ 'main.package': {
+ 'Meta': {'ordering': "('pkgname',)", 'object_name': 'Package', 'db_table': "'packages'"},
+ 'arch': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'packages'", 'to': "orm['main.Arch']"}),
+ 'build_date': ('django.db.models.fields.DateTimeField', [], {'null': 'True'}),
+ 'compressed_size': ('django.db.models.fields.BigIntegerField', [], {'null': 'True'}),
+ 'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'files_last_update': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+ 'flag_date': ('django.db.models.fields.DateTimeField', [], {'null': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'installed_size': ('django.db.models.fields.BigIntegerField', [], {'null': 'True'}),
+ 'last_update': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+ 'packager': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True'}),
+ 'packager_str': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'pkgbase': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
+ 'pkgdesc': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'}),
+ 'pkgname': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
+ 'pkgrel': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'pkgver': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'repo': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'packages'", 'to': "orm['main.Repo']"}),
+ 'url': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True'})
+ },
+ 'main.packagedepend': {
+ 'Meta': {'object_name': 'PackageDepend', 'db_table': "'package_depends'"},
+ 'depname': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'}),
+ 'depvcmp': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '255'}),
+ 'description': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'optional': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'pkg': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['main.Package']"})
+ },
+ 'main.packagefile': {
+ 'Meta': {'object_name': 'PackageFile', 'db_table': "'package_files'"},
+ 'directory': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'filename': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'is_directory': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'path': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'pkg': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['main.Package']"})
+ },
+ 'main.repo': {
+ 'Meta': {'ordering': "['name']", 'object_name': 'Repo', 'db_table': "'repos'"},
+ 'bugs_project': ('django.db.models.fields.SmallIntegerField', [], {'default': '1'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+ 'svn_root': ('django.db.models.fields.CharField', [], {'max_length': '64'}),
+ 'testing': ('django.db.models.fields.BooleanField', [], {'default': 'False'})
+ },
+ 'main.signoff': {
+ 'Meta': {'object_name': 'Signoff'},
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'packager': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+ 'pkg': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['main.Package']"}),
+ 'pkgrel': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'pkgver': ('django.db.models.fields.CharField', [], {'max_length': '255'})
+ },
+ 'main.todolist': {
+ 'Meta': {'object_name': 'Todolist', 'db_table': "'todolists'"},
+ 'creator': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+ 'date_added': ('django.db.models.fields.DateField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+ 'description': ('django.db.models.fields.TextField', [], {}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'max_length': '255'})
+ },
+ 'main.todolistpkg': {
+ 'Meta': {'unique_together': "(('list', 'pkg'),)", 'object_name': 'TodolistPkg', 'db_table': "'todolist_pkgs'"},
+ 'complete': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'list': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['main.Todolist']"}),
+ 'pkg': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['main.Package']"})
+ },
+ 'main.userprofile': {
+ 'Meta': {'object_name': 'UserProfile', 'db_table': "'user_profiles'"},
+ 'alias': ('django.db.models.fields.CharField', [], {'max_length': '50'}),
+ 'allowed_repos': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['main.Repo']", 'symmetrical': 'False', 'blank': 'True'}),
+ 'favorite_distros': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'interests': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+ 'languages': ('django.db.models.fields.CharField', [], {'max_length': '50', 'null': 'True', 'blank': 'True'}),
+ 'location': ('django.db.models.fields.CharField', [], {'max_length': '50', 'null': 'True', 'blank': 'True'}),
+ 'notify': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+ 'occupation': ('django.db.models.fields.CharField', [], {'max_length': '50', 'null': 'True', 'blank': 'True'}),
+ 'other_contact': ('django.db.models.fields.CharField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
+ 'picture': ('django.db.models.fields.files.FileField', [], {'default': "'devs/silhouette.png'", 'max_length': '100'}),
+ 'public_email': ('django.db.models.fields.CharField', [], {'max_length': '50'}),
+ 'roles': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+ 'time_zone': ('django.db.models.fields.CharField', [], {'default': "'UTC'", 'max_length': '100'}),
+ 'user': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'userprofile'", 'unique': 'True', 'to': "orm['auth.User']"}),
+ 'website': ('django.db.models.fields.CharField', [], {'max_length': '200', 'null': 'True', 'blank': 'True'}),
+ 'yob': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'})
+ }
+ }
+
+ complete_apps = ['main']