The `/introspect` endpoint showed poor performance during v4 load
testing due to an inefficient database query in
`internal/query/introspection_client_by_id.sql`. This PR optimizes the
query structure to significantly improve performance.
## Query Optimizations
**UNION → UNION ALL**: Changed expensive `UNION` to `UNION ALL` since
`client_id` is unique across both API and OIDC config tables,
eliminating unnecessary deduplication overhead (30-50% improvement
expected).
**Simplified Keys CTE**: Optimized the keys lookup logic by using
`$2::text as client_id` instead of `identifier as client_id` with `group
by`, and added explicit `$3 = true` condition to the LEFT JOIN for
better query planning.
**Enhanced Readability**: Added consistent table aliases (c, a, p, o, k)
for better maintainability.
## Benefits
- **Zero-downtime deployment**: Uses existing database indexes, no
schema changes required
- **Secondary performance gains**: Other similar queries
(`oidc_client_by_id.sql`, `userinfo_client_by_id.sql`) will also benefit
from the optimizations
- **Minimal code changes**: Only 13 lines added, 9 lines removed in the
SQL query
- **Backward compatible**: Same result set and API behavior
The optimized query maintains the same functionality while providing
significant performance improvements for the introspection endpoint
under high concurrent load.
Fixes#10389.
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# Which Problems Are Solved
In Zitadel, even after an organization is deactivated, associated
projects, respectively their applications remain active. Users across
other organizations can still log in and access through these
applications, leading to unauthorized access.
Additionally, if a project was deactivated access to applications was
also still possible.
# How the Problems Are Solved
- Correctly check the status of the organization and related project.
(Corresponding functions have been renamed to `Active...`)
* feat(oidc): optimize the userinfo endpoint
* store project ID in the access token
* query for projectID if not in token
* add scope based tests
* Revert "store project ID in the access token"
This reverts commit 5f0262f239.
* query project role assertion
* use project role assertion setting to return roles
* workaround eventual consistency and handle PAT
* do not append empty project id
