diff --git a/ereuse_devicehub/alembic.ini b/ereuse_devicehub/alembic.ini new file mode 100644 index 00000000..d8022031 --- /dev/null +++ b/ereuse_devicehub/alembic.ini @@ -0,0 +1,74 @@ +# A generic, single database configuration. + +[alembic] +# path to migration scripts +script_location = migrations + +# template used to generate migration files +# file_template = %%(rev)s_%%(slug)s + +# timezone to use when rendering the date +# within the migration file as well as the filename. +# string value is passed to dateutil.tz.gettz() +# leave blank for localtime +# timezone = + +# max length of characters to apply to the +# "slug" field +#truncate_slug_length = 40 + +# set to 'true' to run the environment during +# the 'revision' command, regardless of autogenerate +# revision_environment = false + +# set to 'true' to allow .pyc and .pyo files without +# a source .py file to be detected as revisions in the +# versions/ directory +# sourceless = false + +# version location specification; this defaults +# to alembic/versions. When using multiple version +# directories, initial revisions must be specified with --version-path +# version_locations = %(here)s/bar %(here)s/bat alembic/versions + +# the output encoding used when revision files +# are written from script.py.mako +# output_encoding = utf-8 + +sqlalchemy.url = driver://user:pass@localhost/dbname + + +# 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 diff --git a/ereuse_devicehub/migrations/README b/ereuse_devicehub/migrations/README new file mode 100644 index 00000000..98e4f9c4 --- /dev/null +++ b/ereuse_devicehub/migrations/README @@ -0,0 +1 @@ +Generic single-database configuration. \ No newline at end of file diff --git a/ereuse_devicehub/migrations/env.py b/ereuse_devicehub/migrations/env.py new file mode 100644 index 00000000..a2603200 --- /dev/null +++ b/ereuse_devicehub/migrations/env.py @@ -0,0 +1,87 @@ +from __future__ import with_statement + +import os +from logging.config import fileConfig + +from sqlalchemy import engine_from_config +from sqlalchemy import pool +from sqlalchemy import create_engine +from sqlalchemy.ext.declarative import declarative_base +from alembic import context + +from ereuse_devicehub.config import DevicehubConfig + +# 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) + +# add your model's MetaData object here +# for 'autogenerate' support +# from myapp import mymodel +# target_metadata = mymodel.Base.metadata +# target_metadata = None +from ereuse_devicehub.db import db +target_metadata = declarative_base().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 get_url(): + # url = os.environ["DATABASE_URL"] + url = DevicehubConfig.SQLALCHEMY_DATABASE_URI + return url + + +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 = get_url() + context.configure(url=url, target_metadata=target_metadata, literal_binds=True) + + 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. + + """ + # connectable = engine_from_config( + # config.get_section(config.config_ini_section), + # prefix="sqlalchemy.", + # poolclass=pool.NullPool, + # ) + + url = get_url() + connectable = create_engine(url) + + with connectable.connect() as connection: + context.configure(connection=connection, target_metadata=target_metadata) + + with context.begin_transaction(): + context.run_migrations() + + +if context.is_offline_mode(): + run_migrations_offline() +else: + run_migrations_online() diff --git a/ereuse_devicehub/migrations/script.py.mako b/ereuse_devicehub/migrations/script.py.mako new file mode 100644 index 00000000..2c015630 --- /dev/null +++ b/ereuse_devicehub/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"}