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https://gitlab.archlinux.org/archlinux/aurweb.git
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b5ff8581f3
This migration modifies the Yes, No, Abstain and ActiveTUs columns of the TUVoteInfo table from unsigned TINYINT to unsigned INTEGER. TINYINT supports a total of 1 byte (up to 255 trusted users). This is quite limited and we don't spend too much more by storing a standard 4-byte INTEGER. Signed-off-by: Kevin Morris <kevr@0cost.org>
49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
"""
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upgrade voteinfo integers
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Within `aurweb/schema.py`, these were previously forced to use
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TINYINT(3, unsigned=True) types. When generating with dummy data,
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it is very easy to bypass 3-character TU counts; in addition,
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this is possible in the future on production, and so we should
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deal with this case regardless.
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All previous TINYINT(3, unsigned=True) typed columns are upgraded
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INTEGER(unsigned=True) types, supporting up to 4-bytes of active TUs
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and votes for one particular proposal.
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Revision ID: be7adae47ac3
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Revises: 56e2ce8e2ffa
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Create Date: 2022-01-06 14:37:07.899778
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"""
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from alembic import op
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from sqlalchemy.dialects.mysql import INTEGER, TINYINT
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# revision identifiers, used by Alembic.
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revision = 'be7adae47ac3'
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down_revision = '56e2ce8e2ffa'
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branch_labels = None
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depends_on = None
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# Upgrade to INTEGER(unsigned=True); supports 4-byte values.
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UPGRADE_T = INTEGER(unsigned=True)
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# Downgrade to TINYINT(3, unsigned=True); supports 1-byte values.
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DOWNGRADE_T = TINYINT(3, unsigned=True)
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def upgrade():
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""" Upgrade 'Yes', 'No', 'Abstain' and 'ActiveTUs' to unsigned INTEGER. """
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op.alter_column("TU_VoteInfo", "Yes", type_=UPGRADE_T)
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op.alter_column("TU_VoteInfo", "No", type_=UPGRADE_T)
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op.alter_column("TU_VoteInfo", "Abstain", type_=UPGRADE_T)
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op.alter_column("TU_VoteInfo", "ActiveTUs", type_=UPGRADE_T)
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def downgrade():
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"""
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Downgrade 'Yes', 'No', 'Abstain' and 'ActiveTUs' to unsigned TINYINT.
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"""
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op.alter_column("TU_VoteInfo", "ActiveTUs", type_=DOWNGRADE_T)
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op.alter_column("TU_VoteInfo", "Abstain", type_=DOWNGRADE_T)
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op.alter_column("TU_VoteInfo", "No", type_=DOWNGRADE_T)
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op.alter_column("TU_VoteInfo", "Yes", type_=DOWNGRADE_T)
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