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creation projection workinggg

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counterweight 2025-06-15 00:56:00 +02:00
parent 35f551949e
commit e2850da787
Signed by: counterweight
GPG key ID: 883EDBAA726BD96C
3 changed files with 61 additions and 4 deletions
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57
alembic/versions/394542f24f6c_add_projection_table.py
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@ -30,7 +30,7 @@ def upgrade() -> None:
),
sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=False),
sa.Column("deleted_at", sa.DateTime(timezone=True)),
sa.Column("last_event_id", sa.UUID(as_uuid=True), nullable=False, unique=True),
sa.Column(
"last_event_sequence",
@ -45,6 +45,61 @@ def upgrade() -> None:
sa.PrimaryKeyConstraint("id"),
)
op.execute(
"""
create or replace function fn_project_user_created(event_id uuid, event_sequence integer, event_timestamp timestamptz, event jsonb) returns uuid
security definer
language plpgsql as $$
declare result uuid;
begin
insert into users(
id,
created_at,
updated_at,
last_event_id,
last_event_sequence,
name,
age,
hair_color
)
values(
cast(event->'event_payload'->>'id' as UUID),
event_timestamp,
event_timestamp,
event_id,
event_sequence,
event->'event_payload'->>'name',
cast(event->'event_payload'->>'age' as INTEGER),
event->'event_payload'->>'hair_color'
)
returning id into result;
return result;
end;
$$;
create or replace function fn_trigger_user_created() returns trigger
security definer
language plpgsql
as $$
begin
perform fn_project_user_created(
new.id,
new.sequence,
new.created_at,
new.event_payload
);
return new;
end;
$$;
create trigger event_insert_user_created
after insert on user_events
for each row
when ((new.event_payload->>'event_type') = 'user_created')
execute procedure fn_trigger_user_created();
"""
)
def downgrade() -> None:
"""Downgrade schema."""