【发布时间】:2020-12-22 04:24:51
【问题描述】:
我正在拔头发,任何帮助将不胜感激。
我正在尝试在部署我的新应用时运行 alembic 升级。我已经搜索堆栈溢出 3 个小时了,但找不到任何有用的东西。我所做的每一件事都有相同的结果。
这来自我的 heroku 发布日志
FAILED: No config file 'alembic.ini' found, or file has no '[alembic]' section
我正在为我的 ProcFile 使用以下内容
release: alembic upgrade head
worker: python bot.py
我正在为我的 env.py 文件使用类似的东西
http://allan-simon.github.io/blog/posts/python-alembic-with-environment-variables/
但这是我的实际情况......这已被修改为 NOTHING 应该尝试打开 alembic.ini
from logging.config import fileConfig
from sqlalchemy import engine_from_config, create_engine
from sqlalchemy import pool
from alembic import context
import logging
logging.basicConfig()
logging.info("running upgrade with logging")
target_metadata = None
import sys
import os
sys.path.insert(0, os.getcwd())
from guildmate.persistence.database_objects import BASE
logging.info("got base")
target_metadata = BASE.metadata
import dotenv
dotenv.load_dotenv()
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.
"""
logging.info("running offline")
database_url = os.getenv("DATABASE_URL")
logging.info(f"{database_url}")
connectable = create_engine(database_url)
context.configure(
url=database_url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
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.
"""
logging.info("running offline")
database_url = os.getenv("DATABASE_URL")
logging.info(f"{database_url}")
connectable = create_engine(database_url)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata, compare_type=True
)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()
我正在使用环境变量来配置数据库 url - 尽管它似乎从未到达那里。
升级在本地运行良好,我可以整日运行。
我还没有想出一种方法来从 alembic 或堆栈跟踪或任何东西中获取任何形式的日志记录,所以我什至不知道是哪一行导致了问题。
我唯一能想到的是发布阶段使用的是预发布代码?它甚至没有任何蒸馏器的东西,所以这没有意义。我真的没有想法。
【问题讨论】:
标签: python heroku sqlalchemy alembic