Add flask-Migrate + alembic for automated database migrations.

Update some dependencies to their latest version.
Make executable scripts executable (chmod +x).

README.md

@@ -78,6 +78,12 @@
 - Set up `sync_es.py` as a service and run it, preferably as the system/root
 - Make sure `sync_es.py` runs within venv with the right dependencies
 
+## Database migrations
+- Uses [flask-Migrate](https://flask-migrate.readthedocs.io/)
+- Run `./db_migrate.py db migrate` to generate the migration script after database model changes.
+- Take a look at the result in `migrations/versions/...` to make sure nothing went wrong.
+- Run `./db_migrate.py db upgrade` to upgrade your database.
+
 ## Good to go!
 - After that, enable the `USE_ELASTIC_SEARCH` flag and restart the webapp and you're good to go
 

db_create.py

@@ -33,9 +33,3 @@
         db.session.add(main_cat)
 
     db.session.commit()
-
-# Create fulltext index
-
-if app.config['USE_MYSQL']:
-    db.engine.execute('ALTER TABLE ' + app.config['TABLE_PREFIX'] + 'torrents ADD FULLTEXT KEY (display_name)')
-

db_migrate.py

@@ -0,0 +1,13 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+from nyaa import app, db
+from flask_script import Manager
+from flask_migrate import Migrate, MigrateCommand
+
+migrate = Migrate(app, db)
+
+manager = Manager(app)
+manager.add_command("db", MigrateCommand)
+
+if __name__ == "__main__":
+	manager.run()

migrations/README

@@ -0,0 +1 @@
+Generic single-database configuration.

migrations/alembic.ini

@@ -0,0 +1,45 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

migrations/env.py

@@ -0,0 +1,87 @@
+from __future__ import with_statement
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from logging.config import fileConfig
+import logging
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from flask import current_app
+config.set_main_option('sqlalchemy.url',
+                       current_app.config.get('SQLALCHEMY_DATABASE_URI'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(url=url)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.readthedocs.org/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    engine = engine_from_config(config.get_section(config.config_ini_section),
+                                prefix='sqlalchemy.',
+                                poolclass=pool.NullPool)
+
+    connection = engine.connect()
+    context.configure(connection=connection,
+                      target_metadata=target_metadata,
+                      process_revision_directives=process_revision_directives,
+                      **current_app.extensions['migrate'].configure_args)
+
+    try:
+        with context.begin_transaction():
+            context.run_migrations()
+    finally:
+        connection.close()
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

requirements.txt

@@ -1,41 +1,49 @@
+alembic==0.9.2
 appdirs==1.4.3
 argon2-cffi==16.3.0
 autopep8==1.3.1
 blinker==1.4
 cffi==1.10.0
 click==6.7
 dominate==2.3.1
-Flask==0.12.1
+elasticsearch==5.3.0
+elasticsearch-dsl==5.2.0
+Flask==0.12.2
 Flask-Assets==0.12
 Flask-DebugToolbar==0.10.1
+Flask-Migrate==2.0.3
+flask-paginate==0.4.5
+Flask-Script==2.0.5
 Flask-SQLAlchemy==2.2
 Flask-WTF==0.14.2
 gevent==1.2.1
 greenlet==0.4.12
 itsdangerous==0.24
 Jinja2==2.9.6
 libsass==0.12.3
+Mako==1.0.6
 MarkupSafe==1.0
+mysql-replication==0.13
 mysqlclient==1.3.10
 orderedset==2.0
 packaging==16.8
 passlib==1.7.1
+progressbar2==3.20.0
 pycodestyle==2.3.1
 pycparser==2.17
+PyMySQL==0.7.11
 pyparsing==2.2.0
+python-dateutil==2.6.0
+python-editor==1.0.3
+python-utils==2.1.0
 six==1.10.0
-SQLAlchemy==1.1.9
+SQLAlchemy==1.1.10
 SQLAlchemy-FullText-Search==0.2.3
 SQLAlchemy-Utils==0.32.14
+statsd==3.2.1
+urllib3==1.21.1
 uWSGI==2.0.15
 visitor==0.1.3
 webassets==0.12.1
-Werkzeug==0.12.1
+Werkzeug==0.12.2
 WTForms==2.1
-## elasticsearch dependencies
-elasticsearch==5.3.0
-elasticsearch-dsl==5.2.0
-progressbar2==3.20.0
-mysql-replication==0.13
-flask-paginate==0.4.5
-statsd==3.2.1