Devin Review iter #6 found 2 issues.
🟡 BUG: cli/error_render.py filtered out empty-string values via
`detail[key] not in (None, "")` and `value not in (None, "")` before
they could reach `_kv_line`. But `_kv_line` was specifically designed
to render empty strings as `(empty)` — the filter shadowed that
branch. The hidden field happens to be the most operator-actionable
one in `cross_project_forbidden`: `billing_project: ""` is the exact
diagnostic confirming WHY USER_PROJECT_DENIED fires.
Change filter to `is not None`. Empty strings now flow through
`_kv_line` and render as `billing_project: (empty)`.
📝 ANALYSIS: CHANGELOG wording for the test-connection endpoint said
"the saved data_source.bigquery config", which Devin flagged as
slightly misleading because `get_bq_access` is `@functools.cache`d —
"Test connection" tests the config in the running process, not the
just-saved YAML overlay. The save flow already returns
`restart_required: True` and the UI shows a banner, so the behavior
is documented; only the CHANGELOG wording was loose. Tightened to
"the **process-cached** BqAccess... Tests the config active in the
running process — after a save the response includes restart_required;
click Test AFTER restart to validate the freshly-saved values."
New test: test_renders_empty_string_as_empty_marker locks in the
empty-string-as-(empty) rendering for the cross_project_forbidden
case so a future filter change won't silently drop the diagnostic
again. 9 affected render tests pass.
Devin Review iter #4 caught: `_format_dict` in cli/error_render.py
seeded `seen = {"kind", "reason"}` to keep both out of the kv block.
But the label line uses only ONE of them (`kind or reason or "error"`),
so the other was silently dropped.
Quota rejections at app/api/query.py:423 (daily-budget) and 488
(concurrent-slot) emit BOTH keys: `{reason: "daily_byte_cap_exceeded",
kind: "daily_bytes", ...}` and `{reason: "concurrent_slot_exceeded",
kind: "concurrent_scans", ...}`. Operator only saw `kind` in the label
and never the more specific `reason` value.
Fix: track which key actually went into the label and skip only that
one. The other appears in the kv section.
Verified output:
Error: daily_bytes (HTTP 429)
reason: daily_byte_cap_exceeded
current: 99999
...
8 affected render tests pass.
The reporter (#160) saw `USER_PROJECT_DENIED` raw in the CLI because
all three CLI error-rendering paths flatten typed BqAccessError /
guardrail / RBAC dicts to a truncated single-line string, hiding the
structured `hint` field that explains how to fix the misconfig.
Fix: shared `cli/error_render.py:render_error(status_code, body)` that
recognizes the canonical typed shapes and pretty-prints them. Falls
back to truncated-and-flattened form for unrecognized bodies, so the
renderer never makes worse-than-status-quo output.
Recognized shapes:
- {detail: {kind: ..., hint?, billing_project?, data_project?}}
— typed BqAccessError responses from /api/v2/scan, /sample, /schema,
/api/query (when /api/query escalates a BQ failure)
- {detail: {reason: 'remote_scan_too_large', scan_bytes, limit_bytes,
tables, suggestion}} — new /api/query cost-guardrail rejection
- {detail: {reason: 'bq_path_not_registered'/'bq_path_access_denied',
path, hint?, registered_as?}} — new /api/query RBAC patch
- {detail: '...'} — string detail (legacy endpoints)
Wired through 3 CLI paths:
- cli/v2_client.py: V2ClientError.__str__ delegates to render_error;
pre-truncation removed from V2ClientError.message (was hiding hints
past 200 chars).
- cli/commands/query.py:_query_remote: parse JSON body, call renderer
on error.
- cli/commands/query.py:_query_hybrid: catch RemoteQueryError, build
synthetic `{detail: {kind: error_type, **details}}` payload, render.
tests/test_cli_query.py:test_remote_query_failure: assertion updated
from `"Query failed"` (no longer printed) to `HTTP 400` + `bad SQL`
(what the renderer surfaces for string detail).
Sample output for cross_project_forbidden:
Error: cross_project_forbidden (HTTP 502)
billing_project: (empty)
data_project: prj-example-data-001
message: USER_PROJECT_DENIED on bigquery.googleapis.com
hint: Set data_source.bigquery.billing_project in
/admin/server-config to a project where the SA has
serviceusage.services.use, or grant the SA that role on the
data project.
19 tests pass — 10 from T4a now GREEN + 3 prior cli_query tests still
green + 6 ancillary.
