opteryx-access

Permission checks and grant/revoke for the Opteryx platform, as an installable library rather than a service. Every consumer imports opteryx_access and calls it in-process against policies it already has in hand -- a JWT's policies claim, or a PolicyStore backed by whatever it uses for storage (Firestore, today). There is no opteryx-access HTTP surface, and this package makes no network calls of its own beyond what a storage adapter does.

Scope: data access only

This package models exactly one thing: who can do what to data -- owner/writer/reader on workspaces, collections, and datasets. It has no notion of billing-account roles (admin/member, minted separately on a billing account and unrelated to data roles) and enforces no billing checks.

The one place these two systems touch is workspace genesis: creating a workspace is a billing-gated action (the creator must already be a billing admin -- checked by whatever service owns billing, not this one), and its result is a data-permission fact -- the creator becomes the new workspace's owner. That handoff is the entire intersection. opteryx_access.grants.bootstrap_workspace implements the data-permission half of it (an explicit list of (principal, role) pairs, owner among them) and knows nothing about billing; the billing gate is the calling service's job, enforced before bootstrap_workspace is ever reached.

Why this exists

Three independent, subtly incompatible implementations of "does this role satisfy this requirement" already exist in the fleet:

• policy.opteryx / control.opteryx (app/routes/v1/access.py, app/models/policy.py -- byte-for-byte duplicated between the two repos): a rank-based ROLES tuple used to decide who may create/update/revoke a policy, and whether a new grant is redundant against one the principal already holds.
• opteryx-core (opteryx/managers/permissions/__init__.py): a set-based ACTION_MAP deciding which roles may READ/DELETE/DROP/etc. a resource once a query actually runs.
• odata.opteryx (app/auth/permissions.py): a binary role_allows_read used for listing/visibility, plus its own pattern matcher -- fnmatchcase where the others use plain fnmatch, a difference that is latent today (see "Behavior changes") but means the three do not state the same rule even where they currently agree.

On top of that, policy.opteryx/control.opteryx/odata.opteryx/ register.opteryx each carry their own copy of "parse the policies claim out of a decoded JWT." Comments in several of these point at an authorize.opteryx service (app.routes.v1.evaluate) as the semantics every copy is meant to mirror -- but no such repo exists anywhere in this workspace. Whether it's a real service in another org/remote or was never built, every consumer today reimplements its own understanding of "role + pattern -> allowed" independently, which is exactly the drift this package is meant to stop.

What lives here

Layering

Rules and storage are separate, and the dependency only points one way:

roles / actions / patterns / models     the vocabulary  (no I/O, no deps)
                 |
              checks.py                 read-side rules (no store at all)
                 |
              grants.py                 write-side rules -- the only module
                 |                       that mutates a store
              store.py                  the storage contract (a Protocol)
                 |
       adapters/firestore.py            one backend

Two consequences worth relying on:

• checks.py never touches a store. It answers from grants handed to it, so opteryx-core can evaluate a query's permissions from a JWT with no storage, no credentials, and no network.
• A store enforces nothing. It translates to its backend and no more. A store that filtered out policies it thought invalid, or refused a write it thought unauthorized, would be enforcing policy somewhere none of the tests for those rules can see it. Every rule lives in grants.py, tested against an in-memory fake.

Patterns and principals

A policy says who gets what role over which resources.

Which resources is a pattern: workspace[.collection[.dataset]], where each dot-separated segment is either a literal name or * standing for any one segment. Rules, all enforced by validate_pattern:

• Names are lowercase, a-z0-9_, starting with a letter. Patterns and resource names are normalized before they are compared, so matching is case-insensitive and decided identically on every platform.
• The workspace segment must be literal. A policy always says which workspace it applies to -- analytics.* is fine, a bare * is not.
• A segment is either * or a whole literal name -- no partial globs like pub*. This is what makes the reserved-workspace check a plain membership test rather than a match against every reserved name, with no evasion to reason about.
• public, personal, and information_schema remain non-grantable.

Who is a named individual, enforced by validate_principal. There is no wildcard principal and no group principal: a grant everyone holds is not something any listing surfaces as unusual, and groups will be their own concept rather than a pattern smuggled into this field.

Identities are casefolded too, so XB500 and xb500 are one principal rather than two people each holding half the access. Normalizing on write alone would not be enough -- a lookup for xb500 would silently miss a stored XB500 -- so every read that filters by principal normalizes the same way.

Audit records

Every successful change to a policy emits one structured record, after the write lands. grant, update_grant, revoke, and bootstrap_workspace all do this themselves -- not the caller -- because a trail assembled by whoever remembers to assemble it is one refactor away from having a hole in it, and a hole here is invisible until someone needs it.

Records go to the standard-library logger opteryx_access.audit at INFO. Being a library, this configures nothing -- no handlers, no levels. A service that does not configure logging for that logger will not see these at all, which for an audit trail is worth confirming rather than assuming.

Each record is emitted twice over, so it survives whatever is in front of it: as compact single-line JSON in the message (Cloud Run promotes a JSON stdout line into jsonPayload on its own), and via extra={"json_fields": ...} (what google-cloud-logging's handlers read directly). A service that would rather route these through its own audit channel can call set_audit_sink and be handed the payload dict.

{"event": "policy.updated", "actor": "alice", "workspace": "analytics",
 "policy_id": "9f2c...", "principal": "xb500", "role": "writer",
 "pattern": "analytics.sales.q1", "previous_role": "reader",
 "previous_pattern": "analytics.sales.*",
 "timestamp": "2026-08-12T08:06:37.516307+00:00"}

event is policy.created, policy.updated, or policy.deleted. The field names deliberately match what policy.opteryx/control.opteryx already emit, so the transforms building opteryx.ops.policy_changes keep working unchanged when a service moves onto this package. Absent fields are omitted rather than null: no previous_* on a create, no role/pattern on a delete. Genesis grants additionally carry bootstrap: true, since they clear none of the usual authority checks and are worth telling apart from an ordinary grant.

Only changes that actually happened are recorded. A refused grant writes nothing -- see "Not recorded" at the end of this file for what that leaves out.

Which check to call

• "May this identity administer grants on this pattern?" -> checks.can_administer_pattern, over stored Policy documents. Requires owner, and requires that ownership to cover the pattern in question.
• "May this role perform this action on this resource?" -> checks.can_perform_action, over Grants. Answered from ACTION_ROLES.

They take different inputs because they need different things: a Grant is role plus pattern, all a data action needs; a Policy also names the principal it was issued to, which is what an administrative check reasons about. Call the one that fits the question -- neither answer substitutes for the other.

Usage

Every check function takes grants/policies already in hand -- it doesn't fetch them itself. Where those come from depends on what you're holding:

• A JWT: opteryx_access.models.parse_policy_claim(claims) -- the token was already scoped to its own holder when it was minted, so nothing more to filter.
• A PolicyStore (live policy state, not a token): opteryx_access.grants.grants_for_principal(store, workspace=..., identity=...) -- fetches that identity's issued grants and converts them to the same Grant shape.

One question is asked across workspaces rather than within one: opteryx_access.grants.owned_by(store, identity=...) returns every policy, in any workspace, that makes an identity an owner. That is what offboarding needs -- a workspace whose last owner is removed cannot be administered by anyone, so those grants have to be reassigned before the identity goes. Each returned Policy carries its workspace.

There is deliberately no "everywhere this identity can read" equivalent: it would mostly return reader rows nobody acts on, while being the expensive query shape and widening what a backend has to index. If a use for it turns up, it should arrive as its own named operation with that use written down.

from opteryx_access import Grant, can_perform_action

grants = [Grant(role="writer", pattern="analytics.sales.*")]
can_perform_action(grants, "analytics.sales.q1", "DELETE")  # True
can_perform_action(grants, "analytics.sales.q1", "DROP")    # False -- writer, not owner

from opteryx_access.grants import grants_for_principal
from opteryx_access.adapters.firestore import FirestorePolicyStore

store = FirestorePolicyStore(db)
grants = grants_for_principal(store, workspace="analytics", identity="bob")
can_perform_action(grants, "analytics.sales.q1", "DELETE")

from opteryx_access import grant, revoke, AccessDeniedError
from opteryx_access.adapters.firestore import FirestorePolicyStore

store = FirestorePolicyStore(db)  # db: google.cloud.firestore.Client
try:
    policy_id = grant(
        store, actor="alice", workspace="analytics",
        principal="bob", role="writer", pattern="analytics.sales.*",
    )
except AccessDeniedError:
    ...  # translate to a 403, same as the route used to do inline

Behavior changes from the ported originals

Ported faithfully except for four deliberate deviations. Each is stricter than what the originals accept, so each can reject a policy that exists today -- audit stored policies before cutting a service over, rather than assuming any of this is a no-op:

• ROLES is ("owner", "writer", "reader") -- three roles, not four. policy.opteryx/control.opteryx's current ROLES/VALID_WORKSPACE_ROLES include a fourth, admin. This package intentionally drops it: admin is a billing-account concept, not a data-permission one (see "Scope" above), and never belonged in the data-role vocabulary.
• Matching is case-insensitive. This is the one deviation that grants more than the originals -- read the note below before cutting over. The originals use plain fnmatch, which delegates to os.path.normcase: that is the identity function on every platform this fleet runs (Linux in production, macOS in development), so the originals are effectively case-sensitive and analytics.* does not match Analytics.sales there. They would only fold case on Windows. Here both sides are lowercased before comparison, so analytics.* does match Analytics.sales. The gain is that the rule is stated rather than inherited from the host OS; the cost is that a stored pattern can now cover resources it did not cover before.
• No wildcard principal. The originals accept principal: "*" as "any authenticated user". Policies here name one individual.
• Patterns must be usable and workspace-scoped. The originals accept any string, including a bare *, partial globs (pub*), and malformed input (a....*.bob11). See "Patterns and principals" above for the rules.

Suggested migration (not yet done)

This repo is the library only -- nothing outside it has been changed yet.

Before step 3, audit the existing policy documents under */$policies/access. Validation runs when a policy is written, not when it is read, so nothing raises on already-stored data -- the behavior just changes silently. Three of the deviations fail closed (the grant stops conferring anything):

• role: "admin" -- no longer a role, so the grant becomes inert.
• principal: "*" -- no longer means "anyone", so the grant reaches nobody.
• patterns that are bare *, partially globbed, or malformed -- they can no longer be written, and are unlikely to match what they used to.
• principals stored with any uppercase (XB500) -- these need rewriting to lowercase, and are the one item here that is not merely inert. Lookups filter server-side on the exact stored string, so a query for xb500 will not find a stored XB500: the grant is invisible to grants_for_principal and owned_by even though the document still exists. In-memory comparisons (can_administer_pattern, has_workspace_access) normalize both sides and so still resolve it, which means a mixed-case principal can behave differently depending on which path reached it. Rewrite them.

The fourth fails open, and needs looking at first:

• case-insensitive matching widens every stored pattern. A pattern only ever matched resources of identical case before; now it also matches those differing in case. If any workspace, collection, or dataset name in the catalog contains an uppercase character, a policy that did not reach it before now does. Enumerate mixed-case resource names before cutover -- if there are none, this deviation is inert and the migration is closed-only.

Decide what happens to each (revoke, or rewrite as an explicit grant); this package does not migrate them for you. tests/test_security.py pins the inert-on-read behavior for the closed-failing three if you want the exact semantics.

Suggested order, each independently shippable:

1. opteryx-core: replace opteryx/managers/permissions/__init__.py's ACTION_MAP/can_perform_action/can_perform_workspace_action/ implicit_policies with thin wrappers around opteryx_access.actions/ opteryx_access.checks (converting ExecutionContext.access_policies dicts to Grants at the boundary). Zero new dependencies -- this package has none by default.
2. odata.opteryx: replace app/auth/permissions.py's role_allows_read/read_grant_for_relation/pattern matching with opteryx_access.checks.can_perform_action (action="READ"). Leaves entitlements_from_claims/billing_account_from_claims alone -- those are a different concern (entitlements/billing), not permissions.
3. policy.opteryx and control.opteryx: thin app/routes/v1/access.py down to request parsing, calling opteryx_access.grants.grant/ update_grant/revoke/bootstrap_workspace via FirestorePolicyStore, and mapping the typed exceptions to HTTPException. The resource-existence check (_resource_exists), user-status lookup (_lookup_user_record), age gate, and audit logging all stay where they are -- see grants.py's module docstring for why those are out of scope here. Given control.opteryx is the in-progress merge target for policy.opteryx (see its docs/design/consolidation.md), do this once, on control.opteryx, and let the policy.opteryx cutover carry it along rather than porting both routes separately.
4. register.opteryx and any other claims-parsing copy: swap to opteryx_access.models.parse_policy_claim for the policies claim specifically. Token verification (signature, issuer, JWKS) stays service-specific -- this package has no opinion on how a JWT gets from bytes to a trusted claims dict, only on what to do with the policies claim once you have one.

Installing

pip install opteryx_access
pip install "opteryx_access[firestore]"  # for adapters.firestore

No hard dependencies. google-cloud-firestore is an optional extra; adapters/firestore.py never imports it at all (it's duck-typed against whatever db object it's handed), so importing opteryx_access itself never requires it -- consistent with opteryx-core's zero-dependency convention.

CI/CD

• .github/workflows/tests.yaml -- pytest (3.13, 3.14) + ruff lint/format, on every push to main and every PR.
• .github/workflows/release.yaml -- on a pushed tag matching version-*: runs the full test workflow, checks the tag matches pyproject.toml's version (exactly, or with a .-delimited suffix), then builds and publishes to PyPI via trusted publishing (OIDC -- no stored API token). The opteryx_access PyPI project needs this repo + the release.yaml workflow registered as a trusted publisher before the first tag push, or the publish step will fail with no valid credentials.

To cut a release: bump version in pyproject.toml, merge to main, then git tag version-X.Y.Z && git push origin version-X.Y.Z.

Not recorded

Refused attempts -- a grant denied for insufficient authority, a self-grant, a rejected pattern -- raise and emit nothing. The records above are a log of changes, and a refusal changes nothing.

That is a deliberate line, not an oversight, but it does mean this package gives a monitoring system no visibility into someone repeatedly trying to escalate. If that is wanted, it should be its own event kind (a policy.denied at WARNING, carrying the actor, what was attempted, and which rule refused it) rather than being folded into the change records, which downstream treats as "this is now true".

License

Apache 2.0. See LICENSE for details.