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36ae5fadf6
It's clear that we need a way to track updates to a broadcast message.
It's also clear that we'll need some kind of audit log that captures
exactly what was sent out in a message.
This commit adds a new database table, `broadcast_event`, which maps 1:1
with CAP XML sent to the CBCs. We'll create one of these just before
sending out.
The main driver for this was that cancel and update messages need to
contain a list of references of all previous messages that they're
amending. This is of format `{sender},{identifier},{sent_timestamp}`,
and the identifier itself needs to be unique for each message.
44 lines
2.1 KiB
Python
44 lines
2.1 KiB
Python
"""
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Revision ID: 0326_broadcast_event
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Revises: 0325_int_letter_rates_fix
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Create Date: 2020-07-24 12:40:35.809523
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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revision = '0326_broadcast_event'
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down_revision = '0325_int_letter_rates_fix'
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def upgrade():
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op.create_table('broadcast_event',
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sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column('service_id', postgresql.UUID(as_uuid=True), nullable=True),
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sa.Column('broadcast_message_id', postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column('sent_at', sa.DateTime(), nullable=False),
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sa.Column('message_type', sa.String(), nullable=False),
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sa.Column('transmitted_content', postgresql.JSONB(none_as_null=True, astext_type=sa.Text()), nullable=True),
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sa.Column('transmitted_areas', postgresql.JSONB(none_as_null=True, astext_type=sa.Text()), nullable=False),
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sa.Column('transmitted_sender', sa.String(), nullable=False),
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sa.Column('transmitted_starts_at', sa.DateTime(), nullable=True),
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sa.Column('transmitted_finishes_at', sa.DateTime(), nullable=True),
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sa.ForeignKeyConstraint(['broadcast_message_id'], ['broadcast_message.id'], ),
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sa.ForeignKeyConstraint(['service_id'], ['services.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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# this shouldn't be nullable. it defaults to `[]` in python.
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op.alter_column('broadcast_message', 'areas', existing_type=postgresql.JSONB(astext_type=sa.Text()), nullable=False)
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# this can't be nullable. it defaults to 'draft' in python.
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op.alter_column('broadcast_message', 'status', existing_type=sa.VARCHAR(), nullable=False)
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op.create_foreign_key(None, 'broadcast_message', 'broadcast_status_type', ['status'], ['name'])
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def downgrade():
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op.drop_constraint('broadcast_message_status_fkey', 'broadcast_message', type_='foreignkey')
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op.alter_column('broadcast_message', 'status', existing_type=sa.VARCHAR(), nullable=True)
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op.alter_column('broadcast_message', 'areas', existing_type=postgresql.JSONB(astext_type=sa.Text()), nullable=True)
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op.drop_table('broadcast_event')
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