Ensure database migrations are in source control
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Generic single-database configuration.
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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
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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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[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
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from __future__ import with_statement
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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from logging.config import fileConfig
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import logging
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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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# 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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from flask import current_app
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config.set_main_option('sqlalchemy.url',
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current_app.config.get('SQLALCHEMY_DATABASE_URI'))
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target_metadata = current_app.extensions['migrate'].db.metadata
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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 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(url=url)
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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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engine = engine_from_config(config.get_section(config.config_ini_section),
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prefix='sqlalchemy.',
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poolclass=pool.NullPool)
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connection = engine.connect()
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context.configure(connection=connection,
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target_metadata=target_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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try:
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with context.begin_transaction():
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context.run_migrations()
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finally:
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connection.close()
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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()
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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"}
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"""PVC version 0.6
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Revision ID: 2d1daa722a0a
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Revises:
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Create Date: 2020-02-15 23:14:14.733134
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"""
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision = '2d1daa722a0a'
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down_revision = None
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branch_labels = None
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depends_on = None
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def upgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.create_table('network_template',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.Column('mac_template', sa.Text(), nullable=True),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('script',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.Column('script', sa.Text(), nullable=False),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('storage_template',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('system_template',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.Column('vcpu_count', sa.Integer(), nullable=False),
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sa.Column('vram_mb', sa.Integer(), nullable=False),
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sa.Column('serial', sa.Boolean(), nullable=False),
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sa.Column('vnc', sa.Boolean(), nullable=False),
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sa.Column('vnc_bind', sa.Text(), nullable=True),
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sa.Column('node_limit', sa.Text(), nullable=True),
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sa.Column('node_selector', sa.Text(), nullable=True),
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sa.Column('node_autostart', sa.Boolean(), nullable=False),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('userdata',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.Column('userdata', sa.Text(), nullable=False),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('network',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('network_template', sa.Integer(), nullable=True),
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sa.Column('vni', sa.Integer(), nullable=False),
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sa.ForeignKeyConstraint(['network_template'], ['network_template.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_table('profile',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.Text(), nullable=False),
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sa.Column('system_template', sa.Integer(), nullable=True),
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sa.Column('network_template', sa.Integer(), nullable=True),
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sa.Column('storage_template', sa.Integer(), nullable=True),
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sa.Column('userdata', sa.Integer(), nullable=True),
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sa.Column('script', sa.Integer(), nullable=True),
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sa.Column('arguments', sa.Text(), nullable=True),
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sa.ForeignKeyConstraint(['network_template'], ['network_template.id'], ),
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sa.ForeignKeyConstraint(['script'], ['script.id'], ),
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sa.ForeignKeyConstraint(['storage_template'], ['storage_template.id'], ),
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sa.ForeignKeyConstraint(['system_template'], ['system_template.id'], ),
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sa.ForeignKeyConstraint(['userdata'], ['userdata.id'], ),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('name')
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)
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op.create_table('storage',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('storage_template', sa.Integer(), nullable=True),
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sa.Column('pool', sa.Text(), nullable=False),
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sa.Column('disk_id', sa.Text(), nullable=False),
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sa.Column('source_volume', sa.Text(), nullable=True),
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sa.Column('disk_size_gb', sa.Integer(), nullable=True),
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sa.Column('mountpoint', sa.Text(), nullable=True),
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sa.Column('filesystem', sa.Text(), nullable=True),
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sa.Column('filesystem_args', sa.Text(), nullable=True),
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sa.ForeignKeyConstraint(['storage_template'], ['storage_template.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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# ### end Alembic commands ###
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def downgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.drop_table('storage')
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op.drop_table('profile')
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op.drop_table('network')
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op.drop_table('userdata')
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op.drop_table('system_template')
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op.drop_table('storage_template')
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op.drop_table('script')
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op.drop_table('network_template')
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# ### end Alembic commands ###
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#!/bin/bash
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# Initialize the PVC database and migrations for future upgrades
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# Part of the Parallel Virtual Cluster (PVC) system
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export PVC_CONFIG_FILE="/etc/pvc/pvcapid.yaml"
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if [[ ! -f ${PVC_CONFIG_FILE} ]]; then
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echo "Create a configuration file at ${PVC_CONFIG_FILE} before initializing the database."
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exit 1
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fi
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pushd /usr/share/pvc
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./pvcapid-manage.py db init
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./pvcapid-manage.py db migrate
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./pvcapid-manage.py db upgrade
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popd
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@ -11,6 +11,5 @@ if [[ ! -f ${PVC_CONFIG_FILE} ]]; then
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fi
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fi
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pushd /usr/share/pvc
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pushd /usr/share/pvc
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./pvcapid-manage.py db migrate
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./pvcapid-manage.py db upgrade
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./pvcapid-manage.py db upgrade
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popd
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popd
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@ -7,3 +7,4 @@ api-daemon/pvcapid usr/share/pvc
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api-daemon/pvcapid.service lib/systemd/system
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api-daemon/pvcapid.service lib/systemd/system
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api-daemon/pvcapid-worker.service lib/systemd/system
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api-daemon/pvcapid-worker.service lib/systemd/system
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api-daemon/provisioner usr/share/pvc
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api-daemon/provisioner usr/share/pvc
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api-daemon/migrations usr/share/pvc
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