crunk
10 months ago
9 changed files with 236 additions and 1 deletions
@ -0,0 +1,20 @@ |
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def deploy(): |
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"""Run deployment of database.""" |
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from flask_migrate import init, migrate, stamp, upgrade |
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from app import create_app, db |
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# This model is required for flask_migrate to make the table |
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from postmodel import Post # noqa: F401 |
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app = create_app() |
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app.app_context().push() |
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db.create_all() |
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# migrate database to latest revision |
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init() |
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stamp() |
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migrate() |
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upgrade() |
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deploy() |
@ -0,0 +1 @@ |
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Single-database configuration for Flask. |
@ -0,0 +1,50 @@ |
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# A generic, single database configuration. |
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[alembic] |
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# template used to generate migration files |
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# file_template = %%(rev)s_%%(slug)s |
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# set to 'true' to run the environment during |
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# the 'revision' command, regardless of autogenerate |
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# revision_environment = false |
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# Logging configuration |
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[loggers] |
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keys = root,sqlalchemy,alembic,flask_migrate |
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[handlers] |
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keys = console |
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[formatters] |
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keys = generic |
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[logger_root] |
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level = WARN |
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handlers = console |
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qualname = |
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[logger_sqlalchemy] |
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level = WARN |
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handlers = |
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qualname = sqlalchemy.engine |
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[logger_alembic] |
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level = INFO |
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handlers = |
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qualname = alembic |
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[logger_flask_migrate] |
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level = INFO |
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handlers = |
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qualname = flask_migrate |
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[handler_console] |
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class = StreamHandler |
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args = (sys.stderr,) |
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level = NOTSET |
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formatter = generic |
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[formatter_generic] |
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format = %(levelname)-5.5s [%(name)s] %(message)s |
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datefmt = %H:%M:%S |
@ -0,0 +1,110 @@ |
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import logging |
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from logging.config import fileConfig |
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from flask import current_app |
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from alembic import context |
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# this is the Alembic Config object, which provides |
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# access to the values within the .ini file in use. |
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config = context.config |
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# Interpret the config file for Python logging. |
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# This line sets up loggers basically. |
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fileConfig(config.config_file_name) |
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logger = logging.getLogger('alembic.env') |
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def get_engine(): |
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try: |
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# this works with Flask-SQLAlchemy<3 and Alchemical |
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return current_app.extensions['migrate'].db.get_engine() |
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except TypeError: |
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# this works with Flask-SQLAlchemy>=3 |
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return current_app.extensions['migrate'].db.engine |
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def get_engine_url(): |
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try: |
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return get_engine().url.render_as_string(hide_password=False).replace( |
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'%', '%%') |
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except AttributeError: |
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return str(get_engine().url).replace('%', '%%') |
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# add your model's MetaData object here |
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# for 'autogenerate' support |
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# from myapp import mymodel |
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# target_metadata = mymodel.Base.metadata |
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config.set_main_option('sqlalchemy.url', get_engine_url()) |
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target_db = current_app.extensions['migrate'].db |
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# other values from the config, defined by the needs of env.py, |
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# can be acquired: |
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# my_important_option = config.get_main_option("my_important_option") |
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# ... etc. |
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def get_metadata(): |
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if hasattr(target_db, 'metadatas'): |
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return target_db.metadatas[None] |
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return target_db.metadata |
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def run_migrations_offline(): |
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"""Run migrations in 'offline' mode. |
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This configures the context with just a URL |
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and not an Engine, though an Engine is acceptable |
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here as well. By skipping the Engine creation |
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we don't even need a DBAPI to be available. |
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Calls to context.execute() here emit the given string to the |
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script output. |
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""" |
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url = config.get_main_option("sqlalchemy.url") |
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context.configure( |
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url=url, target_metadata=get_metadata(), literal_binds=True |
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) |
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with context.begin_transaction(): |
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context.run_migrations() |
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def run_migrations_online(): |
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"""Run migrations in 'online' mode. |
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In this scenario we need to create an Engine |
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and associate a connection with the context. |
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""" |
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# this callback is used to prevent an auto-migration from being generated |
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# when there are no changes to the schema |
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# reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html |
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def process_revision_directives(context, revision, directives): |
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if getattr(config.cmd_opts, 'autogenerate', False): |
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script = directives[0] |
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if script.upgrade_ops.is_empty(): |
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directives[:] = [] |
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logger.info('No changes in schema detected.') |
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connectable = get_engine() |
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with connectable.connect() as connection: |
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context.configure( |
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connection=connection, |
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target_metadata=get_metadata(), |
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process_revision_directives=process_revision_directives, |
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**current_app.extensions['migrate'].configure_args |
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) |
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with context.begin_transaction(): |
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context.run_migrations() |
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if context.is_offline_mode(): |
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run_migrations_offline() |
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else: |
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run_migrations_online() |
@ -0,0 +1,24 @@ |
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"""${message} |
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Revision ID: ${up_revision} |
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Revises: ${down_revision | comma,n} |
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Create Date: ${create_date} |
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""" |
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from alembic import op |
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import sqlalchemy as sa |
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${imports if imports else ""} |
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# revision identifiers, used by Alembic. |
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revision = ${repr(up_revision)} |
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down_revision = ${repr(down_revision)} |
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branch_labels = ${repr(branch_labels)} |
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depends_on = ${repr(depends_on)} |
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def upgrade(): |
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${upgrades if upgrades else "pass"} |
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def downgrade(): |
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${downgrades if downgrades else "pass"} |
@ -0,0 +1,16 @@ |
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from app import db |
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class Post(db.Model): |
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"""post model class for storing a post in crunk-scheduler database""" |
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__tablename__ = "posts" |
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id = db.Column(db.Integer, primary_key=True) |
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content = db.Column(db.String, nullable=False) |
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files = db.Column(db.String(300), nullable=True, unique=False) |
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last_updated = db.Column(db.DateTime) |
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scheduled_time = db.Column(db.DateTime) |
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def __repr__(self): |
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return "<Post %r>" % self.id |
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