diff options
Diffstat (limited to 'alembic')
| -rw-r--r-- | alembic/README | 1 | ||||
| -rw-r--r-- | alembic/env.py | 79 | ||||
| -rw-r--r-- | alembic/script.py.mako | 24 | ||||
| -rw-r--r-- | alembic/versions/4a3773e332a0_use_utc_datetime_in_db.py.old | 110 |
4 files changed, 214 insertions, 0 deletions
diff --git a/alembic/README b/alembic/README new file mode 100644 index 0000000..98e4f9c --- /dev/null +++ b/alembic/README @@ -0,0 +1 @@ +Generic single-database configuration.
\ No newline at end of file diff --git a/alembic/env.py b/alembic/env.py new file mode 100644 index 0000000..2e65ca4 --- /dev/null +++ b/alembic/env.py @@ -0,0 +1,79 @@ +from logging.config import fileConfig + +from sqlalchemy import engine_from_config +from sqlalchemy import pool + +from alembic import context + +# 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. +if config.config_file_name is not None: + fileConfig(config.config_file_name) + +# add your model's MetaData object here +# for 'autogenerate' support +# from myapp import mymodel +# target_metadata = mymodel.Base.metadata +from app import Base +target_metadata = 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 run_migrations_offline() -> None: + """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, + target_metadata=target_metadata, + literal_binds=True, + dialect_opts={"paramstyle": "named"}, + ) + + with context.begin_transaction(): + context.run_migrations() + + +def run_migrations_online() -> None: + """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, + ) + + 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/alembic/script.py.mako b/alembic/script.py.mako new file mode 100644 index 0000000..55df286 --- /dev/null +++ b/alembic/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() -> None: + ${upgrades if upgrades else "pass"} + + +def downgrade() -> None: + ${downgrades if downgrades else "pass"} diff --git a/alembic/versions/4a3773e332a0_use_utc_datetime_in_db.py.old b/alembic/versions/4a3773e332a0_use_utc_datetime_in_db.py.old new file mode 100644 index 0000000..e011a3a --- /dev/null +++ b/alembic/versions/4a3773e332a0_use_utc_datetime_in_db.py.old @@ -0,0 +1,110 @@ +"""use UTC DateTime in DB + +Revision ID: 4a3773e332a0 +Revises: +Create Date: 2022-11-15 17:35:11.717714 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '4a3773e332a0' +down_revision = None +branch_labels = None +depends_on = None + + +def upgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.add_column('borrows', sa.Column('purchase_utc', sa.DateTime(), nullable=True)) + op.add_column('borrows', sa.Column('expiration_utc', sa.DateTime(), nullable=True)) + op.add_column('borrows', sa.Column('purchase_timezone', sa.Integer(), nullable=True)) + op.add_column('borrows', sa.Column('expiration_timezone', sa.Integer(), nullable=True)) + borrows = sa.Table( + "borrows", + sa.MetaData(), + sa.Column("id", sa.Integer, primary_key=True, nullable=False), + sa.Column("purchase", sa.String, nullable=True), + sa.Column("expiration", sa.String, nullable=True), + sa.Column("purchase_utc", sa.DateTime, nullable=True), + sa.Column("expiration_utc", sa.DateTime, nullable=True), + sa.Column("purchase_timezone", sa.Integer, nullable=True), + sa.Column("expiration_timezone", sa.Integer, nullable=True) + ) + connection = op.get_bind() + results = connection.execute(sa.select([ + borrows.c.id, + borrows.c.purchase, + borrows.c.expiration, + borrows.c.purchase_utc, + borrows.c.expiration_utc, + borrows.c.purchase_timezone, + borrows.c.expiration_timezone + ])).fetchall() + from datetime import datetime, timezone + for id, purchase, expiration, purchase_utc, expiration_utc, purchase_timezone, expiration_timezone in results: + if id % 1000 == 0: + print(f"... obdelujem id {id}", end="\r") + if purchase == None: + print(f"at id {id} purchase is None") + continue + purchase_utc = datetime.strptime(purchase, "%Y-%m-%dT%H:%M:%S%z") + expiration_utc = datetime.strptime(expiration, "%Y-%m-%dT%H:%M:%S%z") + purchase_timezone = purchase_utc.tzinfo.utcoffset(None).seconds + expiration_timezone = expiration_utc.tzinfo.utcoffset(None).seconds + purchase_utc = purchase_utc.astimezone(timezone.utc).replace(tzinfo=None) + expiration_utc = expiration_utc.astimezone(timezone.utc).replace(tzinfo=None) + connection.execute(borrows.update().where(borrows.c.id == id).values( + purchase_utc = purchase_utc, + expiration_utc = expiration_utc, + purchase_timezone = purchase_timezone, + expiration_timezone = expiration_timezone + )) + op.drop_column('borrows', 'expiration') + op.drop_column('borrows', 'purchase') + # ### end Alembic commands ### + + +def downgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.add_column('borrows', sa.Column('purchase', sa.VARCHAR(), nullable=True)) + op.add_column('borrows', sa.Column('expiration', sa.VARCHAR(), nullable=True)) + borrows = sa.Table( + "borrows", + sa.MetaData(), + sa.Column("id", sa.Integer, primary_key=True, nullable=False), + sa.Column("purchase", sa.String, nullable=True), + sa.Column("expiration", sa.String, nullable=True), + sa.Column("purchase_utc", sa.DateTime, nullable=True), + sa.Column("expiration_utc", sa.DateTime, nullable=True), + sa.Column("purchase_timezone", sa.Integer, nullable=True), + sa.Column("expiration_timezone", sa.Integer, nullable=True) + ) + connection = op.get_bind() + results = connection.execute(sa.select([ + borrows.c.id, + borrows.c.purchase, + borrows.c.expiration, + borrows.c.purchase_utc, + borrows.c.expiration_utc, + borrows.c.purchase_timezone, + borrows.c.expiration_timezone + ])).fetchall() + from datetime import datetime, timezone, timedelta + for id, purchase, expiration, purchase_utc, expiration_utc, purchase_timezone, expiration_timezone in results: + if id % 1000 == 0: + print(f"... obdelujem id {id}", end="\r") + if purchase_utc == None: + print(f"at id {id} purchase_utc is None") + continue + connection.execute(borrows.update().where(borrows.c.id == id).values( + purchase = purchase_utc.astimezone(timezone(timedelta(seconds=purchase_timezone))).isoformat(), + expiration = expiration_utc.astimezone(timezone(timedelta(seconds=expiration_timezone))).isoformat() + )) + op.drop_column('borrows', 'expiration_timezone') + op.drop_column('borrows', 'purchase_timezone') + op.drop_column('borrows', 'expiration_utc') + op.drop_column('borrows', 'purchase_utc') + # ### end Alembic commands ### |