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annotate libervia/backend/memory/migration/versions/79e5f3313fa4_create_table_for_pubsub_subscriptions.py @ 4272:89a0999884ac default tip @

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cli (list/set): add "--comments" argument.
author Goffi <goffi@goffi.org>
date Thu, 20 Jun 2024 14:46:55 +0200
parents 0d7bb4df2343
children
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658ddbabaf36 core (memory/sqla): new table/mapping to handle Pubsub node subscriptions:
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1 """create table for pubsub subscriptions
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2
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3 Revision ID: 79e5f3313fa4
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4 Revises: 129ac51807e4
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5 Create Date: 2022-03-14 17:15:00.689871
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6
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7 """
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8
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9 from alembic import op
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10 import sqlalchemy as sa
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11 from libervia.backend.memory.sqla_mapping import JID
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13
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14 # revision identifiers, used by Alembic.
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15 revision = "79e5f3313fa4"
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16 down_revision = "129ac51807e4"
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17 branch_labels = None
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18 depends_on = None
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21 def upgrade():
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22 op.create_table(
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23 "pubsub_subs",
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24 sa.Column("id", sa.Integer(), nullable=False),
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25 sa.Column("node_id", sa.Integer(), nullable=False),
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26 sa.Column("subscriber", JID(), nullable=True),
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27 sa.Column("state", sa.Enum("SUBSCRIBED", "PENDING", name="state"), nullable=True),
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28 sa.ForeignKeyConstraint(
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29 ["node_id"],
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30 ["pubsub_nodes.id"],
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31 name=op.f("fk_pubsub_subs_node_id_pubsub_nodes"),
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32 ondelete="CASCADE",
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33 ),
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34 sa.PrimaryKeyConstraint("id", name=op.f("pk_pubsub_subs")),
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35 sa.UniqueConstraint("node_id", "subscriber", name=op.f("uq_pubsub_subs_node_id")),
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36 )
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39 def downgrade():
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40 op.drop_table("pubsub_subs")