Sql alchemy doesn't handle broken databases

[anongoblin]

My ./bin/gmg dbupdate command went bad, and thus broke the instance.

When trying to execute a new dbupdate, I've come across this:

-> Updating main mediagoblin tables:
   + Running migration 24, "activity_migration"... Traceback (most recent call last):
  File "./bin/gmg", line 9, in <module>
    load_entry_point('mediagoblin==0.8.0', 'console_scripts', 'gmg')()
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/gmg_commands/__init__.py", line 142, in main_cli
    args.func(args)
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/gmg_commands/dbupdate.py", line 160, in dbupdate
    run_dbupdate(app_config, global_config)
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/gmg_commands/dbupdate.py", line 128, in run_dbupdate
    run_all_migrations(db, app_config, global_config)
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/gmg_commands/dbupdate.py", line 155, in run_all_migrations
    migration_manager.init_or_migrate()
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/db/migration_tools.py", line 288, in init_or_migrate
    migration_func(self.session)
  File "/srv/biblioteca/biblioteca.pirata.xyz/mediagoblin/db/migrations.py", line 944, in activity_migration
    ActivityIntermediator_R0.__table__.create(db.bind)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/schema.py", line 616, in create
    checkfirst=checkfirst)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1479, in _run_visitor
    conn._run_visitor(visitorcallable, element, **kwargs)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1122, in _run_visitor
    **kwargs).traverse_single(element)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/sql/visitors.py", line 122, in traverse_single
    return meth(obj, **kw)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/ddl.py", line 89, in visit_table
    self.connection.execute(schema.CreateTable(table))
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 662, in execute
    params)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 720, in _execute_ddl
    compiled
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 874, in _execute_context
    context)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 1024, in _handle_dbapi_exception
    exc_info
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/util/compat.py", line 196, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/base.py", line 867, in _execute_context
    context)
  File "/srv/biblioteca/biblioteca.pirata.xyz/local/lib/python2.7/site-packages/SQLAlchemy-0.8.7-py2.7-linux-x86_64.egg/sqlalchemy/engine/default.py", line 324, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.ProgrammingError: (ProgrammingError) relation "core__activity_intermediators" already exists
 '\nCREATE TABLE core__activity_intermediators (\n\tid SERIAL NOT NULL, \n\ttype VARCHAR NOT NULL, \n\tPRIMARY KEY (id)\n)\n\n' {}

I suppose the SQL statment from sqlalchemy should have a "IF_NOT_EXISTS" right after the "CREATE TABLE", but it doesn't.

My db remains broken, and thus the instance.

[Ben Sturmfels]

Can't see a way forward on this - closing.