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"""compressss reports | ||
Revision ID: 1164e037907f | ||
Revises: a6e42ef03da7 | ||
Create Date: 2023-11-18 01:38:00.127472 | ||
""" | ||
from alembic import op | ||
from sqlalchemy.orm.session import Session | ||
import sqlalchemy as sa | ||
from sqlalchemy.dialects import mysql | ||
from sqlalchemy.types import JSON | ||
from sqlalchemy.ext.declarative import declarative_base | ||
import gzip | ||
import json | ||
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Base = declarative_base() | ||
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# revision identifiers, used by Alembic. | ||
revision = '1164e037907f' | ||
down_revision = 'a6e42ef03da7' | ||
branch_labels = None | ||
depends_on = None | ||
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class ReportsUpgradeNew(Base): | ||
__tablename__ = 'reports' | ||
__table_args__ = {'extend_existing': True} | ||
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data = sa.Column( | ||
mysql.MEDIUMBLOB(), | ||
nullable=False | ||
) | ||
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report_type = sa.Column( | ||
sa.VARCHAR(35), | ||
nullable=False, | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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date = sa.Column( | ||
sa.Date(), | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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def save(self): | ||
sa.session.add(self) | ||
sa.session.commit() | ||
sa.session.refresh(self) | ||
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class ReportsUpgradeOld(Base): | ||
__tablename__ = 'reports_old' | ||
__table_args__ = {'extend_existing': True} | ||
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data = sa.Column( | ||
JSON(), | ||
nullable=False | ||
) | ||
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report_type = sa.Column( | ||
sa.VARCHAR(35), | ||
nullable=False, | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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date = sa.Column( | ||
sa.Date(), | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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class ReportsDowngradeOld(Base): | ||
__tablename__ = 'reports' | ||
__table_args__ = {'extend_existing': True} | ||
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data = sa.Column( | ||
mysql.MEDIUMBLOB(), | ||
nullable=False | ||
) | ||
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report_type = sa.Column( | ||
sa.VARCHAR(35), | ||
nullable=False, | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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date = sa.Column( | ||
sa.Date(), | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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def save(self): | ||
sa.session.add(self) | ||
sa.session.commit() | ||
sa.session.refresh(self) | ||
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class ReportsDowngradeNew(Base): | ||
__tablename__ = 'reports_old' | ||
__table_args__ = {'extend_existing': True} | ||
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data = sa.Column( | ||
JSON(), | ||
nullable=False | ||
) | ||
|
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report_type = sa.Column( | ||
sa.VARCHAR(35), | ||
nullable=False, | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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date = sa.Column( | ||
sa.Date(), | ||
primary_key=True, | ||
autoincrement=False | ||
) | ||
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def upgrade(): | ||
# ### commands auto generated by Alembic - please adjust! ### | ||
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op.rename_table('reports', 'reports_old') | ||
bind = op.get_bind() | ||
session = Session(bind=bind) | ||
reports = session.query(ReportsUpgradeOld) | ||
op.create_table('reports', | ||
sa.Column('data', mysql.MEDIUMBLOB(), nullable=False), | ||
sa.Column('report_type', sa.VARCHAR(length=35), autoincrement=False, nullable=False), | ||
sa.Column('date', sa.Date(), autoincrement=False, nullable=False), | ||
sa.PrimaryKeyConstraint('report_type', 'date') | ||
) | ||
# insert records | ||
new_reports = [] | ||
# insert records | ||
for report in reports: | ||
new_reports.append({ | ||
"data":gzip.compress(json.dumps(report.data).encode('utf-8')), | ||
"report_type":report.report_type, | ||
"date":report.date | ||
}) | ||
op.bulk_insert(ReportsUpgradeNew.__table__, new_reports) | ||
op.drop_table('reports_old') | ||
# ### end Alembic commands ### | ||
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def downgrade(): | ||
# ### commands auto generated by Alembic - please adjust! ### | ||
op.drop_table('reports') | ||
op.create_table('reports', | ||
sa.Column('data', JSON(), nullable=False), | ||
sa.Column('report_type', sa.VARCHAR(length=35), autoincrement=False, nullable=False), | ||
sa.Column('date', sa.Date(), autoincrement=False, nullable=False), | ||
sa.PrimaryKeyConstraint('report_type', 'date') | ||
) | ||
# ### end Alembic commands ### |