修复：领券单券成功率按任务独立统计

2026-07-23 21:50:19 +08:00
parent ceceeb3458
commit 49e271927a
11 changed files with 446 additions and 29 deletions
@@ -0,0 +1,93 @@
+"""add per-session coupon claim event table
+
+Revision ID: coupon_claim_event
+Revises: 8e04cc13a211
+Create Date: 2026-07-23
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+from alembic import op
+
+revision: str = "coupon_claim_event"
+down_revision: str | Sequence[str] | None = "8e04cc13a211"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+_JSON = sa.JSON().with_variant(postgresql.JSONB(), "postgresql")
+
+
+def upgrade() -> None:
+    op.create_table(
+        "coupon_claim_event",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("trace_id", sa.String(length=64), nullable=False),
+        sa.Column("device_id", sa.String(length=64), nullable=False),
+        sa.Column("user_id", sa.Integer(), nullable=True),
+        sa.Column("coupon_id", sa.String(length=64), nullable=False),
+        sa.Column("claim_date", sa.Date(), nullable=False),
+        sa.Column("status", sa.String(length=24), nullable=False),
+        sa.Column("app_env", sa.String(length=16), nullable=True),
+        sa.Column("vendor", sa.String(length=48), nullable=True),
+        sa.Column("coupon_name", sa.String(length=128), nullable=True),
+        sa.Column("claimed_count", sa.Integer(), nullable=True),
+        sa.Column("reason", sa.String(length=255), nullable=True),
+        sa.Column("extra", _JSON, nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint(
+            "trace_id", "coupon_id",
+            name="uq_coupon_claim_event_trace_coupon",
+        ),
+    )
+    op.create_index(
+        "ix_coupon_claim_event_date_env",
+        "coupon_claim_event",
+        ["claim_date", "app_env"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_coupon_claim_event_app_env"),
+        "coupon_claim_event",
+        ["app_env"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_coupon_claim_event_trace_id"),
+        "coupon_claim_event",
+        ["trace_id"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_coupon_claim_event_user_id"),
+        "coupon_claim_event",
+        ["user_id"],
+        unique=False,
+    )
+
+    # 旧表只能回填当前仍保留的 trace；历史上已被每日去重覆盖的关联无法恢复。
+    op.execute(
+        """
+        INSERT INTO coupon_claim_event (
+            trace_id, device_id, user_id, coupon_id, claim_date, status, app_env,
+            vendor, coupon_name, claimed_count, reason, extra, created_at, updated_at
+        )
+        SELECT
+            trace_id, device_id, user_id, coupon_id, claim_date, status, app_env,
+            vendor, coupon_name, claimed_count, reason, extra, created_at, updated_at
+        FROM coupon_claim_record
+        WHERE trace_id IS NOT NULL
+        """
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix_coupon_claim_event_user_id"), table_name="coupon_claim_event")
+    op.drop_index(op.f("ix_coupon_claim_event_trace_id"), table_name="coupon_claim_event")
+    op.drop_index(op.f("ix_coupon_claim_event_app_env"), table_name="coupon_claim_event")
+    op.drop_index("ix_coupon_claim_event_date_env", table_name="coupon_claim_event")
+    op.drop_table("coupon_claim_event")