Method rollback

app/services/deployment.py:568–609

Rollback an environment to its previous deployment.

(
        self,
        environment: dict,
        project: Project,
        db: AsyncSession,
        redis_client: Redis,
        settings: Settings,
    )

        return deployment

    async def rollback(
        self,
        environment: dict,
        project: Project,
        db: AsyncSession,
        redis_client: Redis,
        settings: Settings,
    ) -> Alias:
        """Rollback an environment to its previous deployment."""
        subdomain = (
            project.slug
            if environment["id"] == "prod"
            else f"{project.slug}-env-{environment['slug']}"
        )

        alias = (
            await db.execute(select(Alias).where(Alias.subdomain == subdomain))
        ).scalar_one_or_none()

        if not alias or not alias.previous_deployment_id:
            raise ValueError("No previous deployment to roll back to.")

        alias.deployment_id, alias.previous_deployment_id = (
            alias.previous_deployment_id,
            alias.deployment_id,
        )
        await db.commit()

        await self.update_traefik_config(project, db, settings)

        await redis_client.xadd(
            f"stream:project:{project.id}:updates",
            fields={
                "event_type": "deployment_rollback",
                "environment_id": environment["id"],
                "deployment_id": alias.deployment_id,
                "previous_deployment_id": alias.previous_deployment_id or "",
                "timestamp": datetime.now(timezone.utc).isoformat(),
            },
        )

        return alias

    # async def promote(
    #     self,