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comparison libervia/backend/memory/migration/env.py @ 4071:4b842c1fb686

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refactoring: renamed `sat` package to `libervia.backend`
author Goffi <goffi@goffi.org>
date Fri, 02 Jun 2023 11:49:51 +0200
parents sat/memory/migration/env.py@524856bd7b19
children 0d7bb4df2343
comparison
equal deleted inserted replaced
4070:d10748475025 4071:4b842c1fb686
1 import asyncio
2 from logging.config import fileConfig
3 from sqlalchemy import pool
4 from sqlalchemy.ext.asyncio import create_async_engine
5 from alembic import context
6 from libervia.backend.memory import sqla_config
7 from libervia.backend.memory.sqla_mapping import Base
8
9 # this is the Alembic Config object, which provides
10 # access to the values within the .ini file in use.
11 config = context.config
12
13 # Interpret the config file for Python logging.
14 # This line sets up loggers basically.
15 fileConfig(config.config_file_name)
16
17 # add your model's MetaData object here
18 # for 'autogenerate' support
19 # from myapp import mymodel
20 # target_metadata = mymodel.Base.metadata
21 target_metadata = Base.metadata
22
23 # other values from the config, defined by the needs of env.py,
24 # can be acquired:
25 # my_important_option = config.get_main_option("my_important_option")
26 # ... etc.
27
28
29 def run_migrations_offline():
30 """Run migrations in 'offline' mode.
31
32 This configures the context with just a URL
33 and not an Engine, though an Engine is acceptable
34 here as well. By skipping the Engine creation
35 we don't even need a DBAPI to be available.
36
37 Calls to context.execute() here emit the given string to the
38 script output.
39
40 """
41 db_config = sqla_config.get_db_config()
42 context.configure(
43 url=db_config["url"],
44 target_metadata=target_metadata,
45 literal_binds=True,
46 dialect_opts={"paramstyle": "named"},
47 )
48
49 with context.begin_transaction():
50 context.run_migrations()
51
52
53 def include_name(name, type_, parent_names):
54 if type_ == "table":
55 if name.startswith("pubsub_items_fts"):
56 return False
57 return True
58
59
60 def do_run_migrations(connection):
61 context.configure(
62 connection=connection,
63 target_metadata=target_metadata,
64 render_as_batch=True,
65 include_name=include_name
66 )
67
68 with context.begin_transaction():
69 context.run_migrations()
70
71
72 async def run_migrations_online():
73 """Run migrations in 'online' mode.
74
75 In this scenario we need to create an Engine
76 and associate a connection with the context.
77
78 """
79 db_config = sqla_config.get_db_config()
80 engine = create_async_engine(
81 db_config["url"],
82 poolclass=pool.NullPool,
83 future=True,
84 )
85
86 async with engine.connect() as connection:
87 await connection.run_sync(do_run_migrations)
88
89
90 if context.is_offline_mode():
91 run_migrations_offline()
92 else:
93 asyncio.run(run_migrations_online())