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Pagination fixes - #4063
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mandre wants to merge 8 commits into
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Pagination fixes#4063mandre wants to merge 8 commits into
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coverage: 64.462% (+0.5%) from 63.962% — shiftstack:pagination-fixes into gophercloud:main |
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All new tests failed as expected. |
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| // NextPageURL returns the URL for the next page of results. | ||
| func (r VolumeAttachmentPage) NextPageURL(endpointURL string) (string, error) { |
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Here looks to be a bit tricky. Nova applies the offset to the block device list[1], including block devices which has image as its source, then only after that it filters by volumes.
So moving the offset based on the returned items might lead to wrong results. One option is to remove duplicates[2].
[1] https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/volume_attachments.py#L123-L135
[2] https://github.com/gophercloud/gophercloud/actions/runs/40345176521/job/121650072750?pr=4063#step:7:4925
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Unfortunately that won't help: nova exposes neither the number of underlying block-device mappings nor a next-page marker. Empty pages can hide later volumes, so deduplication or a different offset increment cannot guarantee complete results.
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Attempting a nova fix at https://review.opendev.org/c/openstack/nova/+/1012429.
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I think this API doesn't accept pagination. It might be filtering out resources with the limit property instead of really filtering.
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For securityservices, both summary and detail listing treat pagination parameters as filters for admins but remove unknown filters for non-admins before applying offset and limit.
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Attempting a manila fix at https://review.opendev.org/c/openstack/manila/+/1012430.
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Considering the risk of introducing regression (seeing that we found 2 upstream bugs already), we must have e2e tests for each of the pagination fixes. |
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@mandre are you planning to add the remaining acceptance tests in this PR? Happy to help with those if useful. |
Add acceptance coverage for server groups, keypairs, and stacks using small pages. Assert that `EachPage` visits multiple pages and that both `EachPage` and `AllPages` return each fixture exactly once, exposing first-page truncation. Compare server group traversal with direct API requests using explicit offsets to distinguish SDK truncation from server-side behavior. Supply missing page-size options through test-local query builders. Verify single-page security service listing with two created services and no pagination parameters, including `EachPage` and `AllPages`. Use metadata and security-group-backed stack fixtures to avoid creating VMs, volumes, or shares. Register cleanup as resources are created. Leave production pagination unchanged so live reproduction can precede the fixes.
Snapshot lists return collection-specific continuation links [1], while attachment lists accept markers [2] but return no collection links [3]. The inherited page implementations therefore stop before all results have been retrieved. Follow `snapshots_links` and derive the next attachment marker from the last attachment ID. Replace the snapshot `SinglePageBase` so `AllPages` can iterate, and define `ResourceKey` for deterministic aggregation. Add resource-local regression tests for `EachPage`, `AllPages`, empty responses, malformed data, query preservation, and termination. Align the attachment fixture with the upstream response format. [1] https://github.com/openstack/cinder/blob/3bcb543305500c8f555c92b57b4ca4328ccdd078/cinder/api/views/snapshots.py#L64-L81 [2] https://github.com/openstack/cinder/blob/3bcb543305500c8f555c92b57b4ca4328ccdd078/cinder/api/v3/attachments.py#L82-L106 [3] https://github.com/openstack/cinder/blob/3bcb543305500c8f555c92b57b4ca4328ccdd078/cinder/api/v3/views/attachments.py#L52-L57
Nova exposes continuation links for instance actions [1], keypairs [2], and migrations [3]. Security group [5] and server group [6] lists use `common.limited` [4]. Inheriting `SinglePageBase` prevents these collections from advancing. Replace single-page handling with the appropriate link or offset protocol so `EachPage` and `AllPages` do not truncate results. Keep server-specific security group associations single-page because their controller does not paginate them [10]. Older microversions without links [1][8][9] still terminate after their initial response. Keep volume attachments single-page because Nova slices all block-device mappings before excluding non-volume devices [7]. The returned attachment count cannot determine the next offset. Document this limitation and test mixed mappings, empty pages, and server-side caps. Define `ResourceKey` for deterministic aggregation. Add resource-local regressions for iteration, aggregation, query preservation, malformed responses, empty results, and microversion behavior. Correct fixtures so continuation requests stay on the local test server. [1] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/instance_actions.py#L125-L139 [2] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/views/keypairs.py#L55-L69 [3] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/migrations.py#L173-L179 [4] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/common.py#L215-L231 [5] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/security_groups.py#L182-L201 [6] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/server_groups.py#L195-L206 [7] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/volume_attachments.py#L113-L145 [8] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/keypairs.py#L196-L225 [9] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/migrations.py#L197-L210 [10] https://github.com/openstack/nova/blob/0e701bfd411ec8d4c15419710c4968a582abedc7/nova/api/openstack/compute/security_groups.py#L372-L398
Trove lists configuration groups through `SimplePaginatedDataView` [1], which supplies a top-level `links` array when another page exists [2]. Inheriting `SinglePageBase` ignores this continuation and causes `EachPage` and `AllPages` to return an incomplete collection. Use `LinkedPageBase` and extract the next URL from the link array. Define `ResourceKey` so aggregation selects `configurations` even when other response fields contain arrays. Add resource-local regression tests for iteration, aggregation, termination, empty responses, malformed links, and query preservation. [1] https://github.com/openstack/trove/blob/4d45feb3fe7568cc481c1d514560b6652e2d2e1a/trove/configuration/service.py#L50-L57 [2] https://github.com/openstack/trove/blob/4d45feb3fe7568cc481c1d514560b6652e2d2e1a/trove/common/pagination.py#L104-L120
Neutron emits extension continuation links in collection-specific arrays [1], rather than the `links.next` object expected by `LinkedPageBase`. Resource registration enables pagination for BGP [2], network IP availability [3], QoS rules [4], segments [5], and trunks [6], including registrations through the shared resource helper [7]. Read the corresponding link arrays in `NextPageURL` and replace `SinglePageBase` where it prevents iteration. Define `ResourceKey` so `AllPages` aggregates the intended resource list instead of selecting an unrelated array from the response. Add resource-local regression tests for `EachPage`, `AllPages`, aggregation order, termination, empty responses, malformed links, and query preservation. [1] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/api/v2/base.py#L339-L345 [2] https://github.com/openstack/neutron-dynamic-routing/blob/bd960e7bfbf2ca536d1aa2ad4c8e4a8d5d8a9405/neutron_dynamic_routing/extensions/bgp.py#L76-L85 [3] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/extensions/network_ip_availability.py#L28-L43 [4] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/extensions/qos.py#L57-L76 [5] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/extensions/segment.py#L30-L43 [6] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/extensions/trunk.py#L26-L36 [7] https://github.com/openstack/neutron/blob/7a3841bb4f5a47c3694767c3440f6f417a3ae15b/neutron/api/v2/resource_helper.py#L93-L107
Heat includes a collection-level `links` array in stack list responses [1]. Its pagination helper creates the next URL from the last stack ID when the requested page is full [2]. Inheriting `SinglePageBase` ignores these links and silently truncates `EachPage` and `AllPages` results. Use `LinkedPageBase` and extract the next URL from the collection links. Define `ResourceKey` so `AllPages` consistently aggregates `stacks`. Add resource-local regression tests for iteration, aggregation, termination, empty responses, malformed links, and query preservation. [1] https://github.com/openstack/heat/blob/741d092fd101927ede252d676fd0372457ad418b/heat/api/openstack/v1/views/stacks_view.py#L66-L78 [2] https://github.com/openstack/heat/blob/741d092fd101927ede252d676fd0372457ad418b/heat/api/openstack/v1/views/views_common.py#L17-L40
Manila message lists use offset pagination [1]. Their inherited `SinglePageBase` prevents iteration beyond the initial response. Advance offsets by the number of returned messages while retaining filters and page sizes, and stop when the collection is empty. Do not follow the message view's continuation links [2]: its helper uses markers [3][4], but the controller passes offsets, not markers, to the message API [1][5]. Replace `SinglePageBase` so `AllPages` can iterate and define `ResourceKey` for deterministic aggregation. Add resource-local regression tests for iteration, aggregation, termination, empty responses, malformed data, offset validation, and query preservation. Update fixtures to return an empty collection after their initial page. Keep security service lists single-page. The controller treats pagination parameters as resource filters for admin requests [6][7]. Document the limitation and cover admin filtering and server-side caps. [1] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/v2/messages.py#L91-L122 [2] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/views/messages.py#L58-L68 [3] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/common.py#L387-L401 [4] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/common.py#L343-L346 [5] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/message/api.py#L75-L86 [6] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/v2/security_service.py#L93-L150 [7] https://github.com/openstack/manila/blob/e969e4473db963e80c733e20cbeaf2d5740bbaa0/manila/api/common.py#L450-L462
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Yes. I planed to work on it soon. Happy to hand over to you if I don't get a chance to get back at this quicly. |
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sounds good |
Add shared helpers for `EachPage`, `AllPages`, and retained single-page collections, with scoped page-size controls and continuation checks. Add Compute, Trove, and Neutron acceptance fixtures, including QoS rule capability checks. Strengthen Manila security-service termination checks. Validate the unit suite, helper race tests, and acceptance compilation. Live prerequisites, CI execution, and regression-reversion runs remain unverified.
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New tests found another pagination issue, this time in trove that I'm trying to fix with https://review.opendev.org/c/openstack/trove/+/1014860 |
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Fix list operations that silently stop after the first page despite the API supporting pagination. Both
EachPageandAllPagescan return incomplete collections without reporting an error.The first commit successfully demonstrated the all the new tests failed as expected in live environments.
Fixes #4064.