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