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[cr-test] api: follow up the admin sandbox list's node filters - #1456
This follows up the review of #1385, which added the node_id and assigned filters to the admin sandbox list (GET /admin/api/v1/sandboxes). It addresses the five low-severity points left after that pull request merged. Only one changes what SQL runs, and the list's results don't change.
One definition of "reported on a node". The unpaged list, which is used when there is no cursor, now filters assigned with Direct's reported_on_a_node predicate, as the paged statement already did. Before, it spelled the same rule a second way, as COALESCE(direct_route.current_node_id, s.active_node_id) IS NOT NULL over the joined route (crates/l40_api/api/src/controllers/sandbox/list_page/admin.rs). The two are equivalent because a route's current_node_id is NOT NULL and sandbox_id is its primary key. The shared predicate looks a filtered row's route up again by primary key. Measured, it plans no worse than the old spelling in any case.
A planner claim corrected.reported_on_node's doc (crates/l40_api/api/src/controllers/substrate/direct/reported_node.rs) said the planner always reaches a node's sandboxes through idx_sandboxes_active_node and the primary key. Measured, that holds only for a custom plan, and that plan uses the unique (id, org_id) index rather than the primary key. The admin statements wrap the predicate as $10::UUID IS NULL OR …. Under a generic plan the planner cannot drop that IS NULL arm, so it tests every row in list order. The comment now claims only that.
The 400 for a malformed filter, documented. The admin OpenAPI description now says a malformed parameter answers 400 with or without cursor, rather than being ignored. For example, a node_id that is a node name, or assigned=1, is refused. See Rollout.
Tests that could not fail.an_empty_filter_parameter_is_unset seeded only sandboxes with no node, so an assigned= read as false listed the same rows as no filter. It now seeds one sandbox on a node. The combined on-a-node case of each_filter_returns_exactly_its_rows sets created_after again. Its node filter and created_after each decide its result, so a statement that binds one placeholder in another's place lists other rows. In the_node_filters_match_the_node_the_response_reports, only the node_id cases compared the listed rows with the response's own active_node_id; the assigned and unassigned cases checked fixed seed indexes. Now every case does, for the paged and the unpaged statements: each listed row's response has (or lacks) a node, and no unlisted seeded row's does.
Validation
At this head: cargo fmt --all -- --check and cargo clippy -p pplx-space-api --all-targets --all-features -- -D warnings pass. cargo nextest run -p pplx-space-api --all-features runs 2188 tests: all pass, and one #[ignore] benchmark is skipped. The database tests ran against the repository's nextest Postgres and Redis fixtures. cargo arch, against main's baseline and architecture, reports the same 113 advisory findings as main, and none is required.
an_empty_filter_parameter_is_unset fails against a temporary change that reads assigned= as false, and the version on main passes against it.
With the response's active_node_id temporarily reduced to the row's column, ignoring the route, and the node_id cases removed, the assigned case of the_node_filters_match_the_node_the_response_reports fails. The previous version of the test passes against the same change.
The plan claim was measured with EXPLAIN (ANALYZE) of both admin statements under force_custom_plan and force_generic_plan. The fixture had 28,005 seeded sandboxes over 300 nodes, plus 2,003 Direct routes. Filtered by a node with five sandboxes, the custom plan read them through a BitmapOr of idx_sandboxes_active_node and sandboxes_id_org_id_key, in about 0.7 ms. The generic plan filtered all 28,005 rows: about 67 ms paged and 55 ms unpaged.
The same fixture compared the unpaged assigned filter with the old spelling. For assigned=false the new predicate takes 4.0 ms against 13.6 ms under a custom plan, and 0.7 s against 1.8 s under a generic plan. For assigned=true it takes 1.5 ms with either spelling, and 1.3 s against 1.8 s.
No new plan test was added, because the claim does not hold under a generic plan. No Kind or deployed run was made.
Severity and risk
Severity: low. These are test gaps, an inaccurate comment and a second spelling of one SQL rule. No result was wrong.
Risk: the unpaged list's assigned filter runs a different but equivalent predicate. Existing tests check both statements' assigned and unassigned results, including sandboxes whose route and row disagree. To roll back, revert the commit.
Rollout
No migration or ordering. The behavior change described here shipped in #1385, and this pull request only documents it. On the unpaged list (no cursor), node_id and assigned used to be unknown names, so the list ignored them. Since #1385, a non-empty but malformed value answers 400 instead, such as a node name for node_id or assigned=1. A caller that sent one used to get the whole list and now gets an error. That is intended: a filter that silently matched every sandbox would be worse. An empty value is still unset.
Not covered
Under a generic plan, the unpaged statement with an assigned filter is slow with either spelling: about 0.7–1.3 s on the fixture above. Nested loops over the response's joins run before the filter and LIMIT. This predates this change, and the change makes it smaller.
A node_id request also tests every row under a generic plan: on the fixture above, both statements filtered all 28,005 rows, in about 67 ms paged and 55 ms unpaged.
Both are tracked separately.
AI assistance: Claude Code drafted the code, the tests and this description.
The legacy unpaged admin query now uses reported_on_a_node("s") for assignment filtering. Tests extend node-filter coverage across paged and unpaged results. Endpoint documentation clarifies responses to malformed filters and predicate documentation describes query-planner behavior.
Possibly related PRs
perplexityai/SPACE#1405: It changes the same admin sandbox-list implementation and tests, including the unpaged assignment predicate and node-filter coverage.
Merge Risk: Low · up to 83c5d
Admin sandbox assignment results change for sandboxes reported through Direct routes without an active node. The paged and unpaged paths are covered by focused tests, so the change is low risk to merge.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Title check
The title uses the bracketed tag "[cr-test]" as a prefix before the "api:" area. The requirement asks for a lowercase area and colon, or the area in square brackets, with no extra tag. The area part "…
Remove the "[cr-test]" prefix so the title reads "api: follow up the admin sandbox list's node filters". The PR objectives describe this as a preview-only test PR that should not be merged, so the title will change anyway if the work is mer…
Passed checks: 4 passed
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Status
Explanation
Description Follows The Pr Template
The PR description contains all required sections and content: ## Summary states what the change does; ## Validation names commands and results; ## Severity and risk gives low severity and risk;…
Bug Fixes Name A Regression Test
PASS. The PR does not introduce a new application-behavior fix: it replaces the unpaged assigned SQL spelling with the existing equivalent reported_on_a_node predicate and updates documentation an…
Weakened Safeguards Are Justified
The reviewed diff does not remove or weaken a test, assertion, lint, CI check, or repository guard. The test changes add coverage: they seed an assigned sandbox for empty-filter behavior, add combined…
Public-Safe Content
PASS. The changed files contain only SQL, documentation, and test updates. The diff contains no credentials, tokens, private keys, internal URLs or hostnames, cloud ARNs, personal paths, incident deta…
Full details: Description Follows The Pr Template
Explanation
The PR description contains all required sections and content: ## Summary states what the change does; ## Validation names commands and results; ## Severity and risk gives low severity and risk; and AI assistance: identifies Claude Code and the drafted parts.
Full details: Bug Fixes Name A Regression Test
Explanation
PASS. The PR does not introduce a new application-behavior fix: it replaces the unpaged assigned SQL spelling with the existing equivalent reported_on_a_node predicate and updates documentation and tests. The Validation section also names regression checks that fail under temporary reverted behavior, including an_empty_filter_parameter_is_unset and the_node_filters_match_the_node_the_response_reports, and states that they pass with this change.
Full details: Weakened Safeguards Are Justified
Explanation
The reviewed diff does not remove or weaken a test, assertion, lint, CI check, or repository guard. The test changes add coverage: they seed an assigned sandbox for empty-filter behavior, add combined-filter constraints, and extend response-oracle checks to assigned and unassigned cases for both paged and unpaged statements. The SQL and documentation changes do not alter safeguards.
Full details: Public-Safe Content
Explanation
PASS. The changed files contain only SQL, documentation, and test updates. The diff contains no credentials, tokens, private keys, internal URLs or hostnames, cloud ARNs, personal paths, incident details, or vulnerability disclosures. The description reports measurements from a seeded test fixture, not production logs or production measurements.
Full details: Title check
Explanation
The title uses the bracketed tag "[cr-test]" as a prefix before the "api:" area. The requirement asks for a lowercase area and colon, or the area in square brackets, with no extra tag. The area part "api:" matches the lowercase-colon form, and the summary "follow up the admin sandbox list's node filters" starts with a lowercase word and matches the changeset, which tightens admin list node filters, documents malformed 400 errors, and strengthens tests. The extra "[cr-test]" prefix is the only deviation and it is a test marker that should not be in a merged title.
Resolution
Remove the "[cr-test]" prefix so the title reads "api: follow up the admin sandbox list's node filters". The PR objectives describe this as a preview-only test PR that should not be merged, so the title will change anyway if the work is merged under a real name.
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- Title check:
Remove the "[cr-test]" prefix so the title reads "api: follow up the admin
sandbox list's node filters". The PR objectives describe this as a preview-only
test PR that should not be merged, so the title will change anyway if the work
is merged under a real name.
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Summary
This follows up the review of #1385, which added the
node_idandassignedfilters to the admin sandbox list (GET /admin/api/v1/sandboxes). It addresses the five low-severity points left after that pull request merged. Only one changes what SQL runs, and the list's results don't change.cursor, now filtersassignedwith Direct'sreported_on_a_nodepredicate, as the paged statement already did. Before, it spelled the same rule a second way, asCOALESCE(direct_route.current_node_id, s.active_node_id) IS NOT NULLover the joined route (crates/l40_api/api/src/controllers/sandbox/list_page/admin.rs). The two are equivalent because a route'scurrent_node_idisNOT NULLandsandbox_idis its primary key. The shared predicate looks a filtered row's route up again by primary key. Measured, it plans no worse than the old spelling in any case.reported_on_node's doc (crates/l40_api/api/src/controllers/substrate/direct/reported_node.rs) said the planner always reaches a node's sandboxes throughidx_sandboxes_active_nodeand the primary key. Measured, that holds only for a custom plan, and that plan uses the unique(id, org_id)index rather than the primary key. The admin statements wrap the predicate as$10::UUID IS NULL OR …. Under a generic plan the planner cannot drop thatIS NULLarm, so it tests every row in list order. The comment now claims only that.cursor, rather than being ignored. For example, anode_idthat is a node name, orassigned=1, is refused. See Rollout.an_empty_filter_parameter_is_unsetseeded only sandboxes with no node, so anassigned=read asfalselisted the same rows as no filter. It now seeds one sandbox on a node. The combined on-a-node case ofeach_filter_returns_exactly_its_rowssetscreated_afteragain. Its node filter andcreated_aftereach decide its result, so a statement that binds one placeholder in another's place lists other rows. Inthe_node_filters_match_the_node_the_response_reports, only thenode_idcases compared the listed rows with the response's ownactive_node_id; theassignedandunassignedcases checked fixed seed indexes. Now every case does, for the paged and the unpaged statements: each listed row's response has (or lacks) a node, and no unlisted seeded row's does.Validation
At this head:
cargo fmt --all -- --checkandcargo clippy -p pplx-space-api --all-targets --all-features -- -D warningspass.cargo nextest run -p pplx-space-api --all-featuresruns 2188 tests: all pass, and one#[ignore]benchmark is skipped. The database tests ran against the repository's nextest Postgres and Redis fixtures.cargo arch, againstmain's baseline and architecture, reports the same 113 advisory findings asmain, and none is required.an_empty_filter_parameter_is_unsetfails against a temporary change that readsassigned=asfalse, and the version onmainpasses against it.active_node_idtemporarily reduced to the row's column, ignoring the route, and thenode_idcases removed, theassignedcase ofthe_node_filters_match_the_node_the_response_reportsfails. The previous version of the test passes against the same change.EXPLAIN (ANALYZE)of both admin statements underforce_custom_planandforce_generic_plan. The fixture had 28,005 seeded sandboxes over 300 nodes, plus 2,003 Direct routes. Filtered by a node with five sandboxes, the custom plan read them through aBitmapOrofidx_sandboxes_active_nodeandsandboxes_id_org_id_key, in about 0.7 ms. The generic plan filtered all 28,005 rows: about 67 ms paged and 55 ms unpaged.assignedfilter with the old spelling. Forassigned=falsethe new predicate takes 4.0 ms against 13.6 ms under a custom plan, and 0.7 s against 1.8 s under a generic plan. Forassigned=trueit takes 1.5 ms with either spelling, and 1.3 s against 1.8 s.No new plan test was added, because the claim does not hold under a generic plan. No Kind or deployed run was made.
Severity and risk
Severity: low. These are test gaps, an inaccurate comment and a second spelling of one SQL rule. No result was wrong.
Risk: the unpaged list's
assignedfilter runs a different but equivalent predicate. Existing tests check both statements'assignedandunassignedresults, including sandboxes whose route and row disagree. To roll back, revert the commit.Rollout
No migration or ordering. The behavior change described here shipped in #1385, and this pull request only documents it. On the unpaged list (no
cursor),node_idandassignedused to be unknown names, so the list ignored them. Since #1385, a non-empty but malformed value answers 400 instead, such as a node name fornode_idorassigned=1. A caller that sent one used to get the whole list and now gets an error. That is intended: a filter that silently matched every sandbox would be worse. An empty value is still unset.Not covered
assignedfilter is slow with either spelling: about 0.7–1.3 s on the fixture above. Nested loops over the response's joins run before the filter andLIMIT. This predates this change, and the change makes it smaller.node_idrequest also tests every row under a generic plan: on the fixture above, both statements filtered all 28,005 rows, in about 67 ms paged and 55 ms unpaged.Both are tracked separately.
AI assistance: Claude Code drafted the code, the tests and this description.