'''
Create snapshot table

Revision ID: 565e01e3cf6d
Created at: 2016-04-19 12:07:58.372426
'''

import sqlalchemy as sa
from alembic import op

revision = '565e01e3cf6d'
down_revision = '336a76ec1338'
branch_labels = None
depends_on = None


def upgrade():
    op.create_table(
        'snapshot',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('creation_time', sa.DateTime(), nullable=False),
        sa.Column('resource_type', sa.Unicode(length=32), nullable=False),
        sa.Column('resource_id', sa.Integer(), nullable=False),
        sa.Column('operation', sa.Unicode(length=16), nullable=False),
        sa.Column('user_id', sa.Integer(), nullable=True),
        sa.Column('data', sa.PickleType(), nullable=True),
        sa.ForeignKeyConstraint(['user_id'], ['user.id']),
        sa.PrimaryKeyConstraint('id'))


def downgrade():
    op.drop_table('snapshot')
