Commit Graph
83 Commits
Author SHA1 Message Date
Chris CoutinhoandClaude Opus 4.8 21b7922bac feat: replace NATS ingest with procrastinate Postgres queue (#183)
Re-architect document ingest from the shared NATS-glued document-processor to a
per-tenant, in-process model owned by nextcloud-mcp-server (Deck #183). The MCP
server now owns both sides of ingest:

- Producer (api role): the scanner defers one job per changed document into the
  app's Postgres via procrastinate (queueing_lock dedup; no execution lock, so a
  crashed worker can't deadlock a doc — Qdrant upserts are idempotent).
- Consumer (worker role): `nextcloud-mcp-server worker` drains the queue and runs
  the existing process_document pipeline; a periodic task reclaims jobs orphaned
  in `doing` by a crash.

INGEST_QUEUE selects the transport (auto: postgres when DATABASE_URL is Postgres,
else the in-process anyio queue for SQLite/dev). procrastinate manages its own
tables (applied on a fresh DB at startup and by `db upgrade`). The vector-sync
status surface reads job counts from Postgres in postgres mode. procrastinate +
psycopg3 ship in the [postgres] extra; the app's own engine still uses asyncpg
(driver unification is a follow-up handled in the rendered Helm chart).

NATS JetStream, the Postgres-queue stub, the bus status subscriber, and nats-py
are removed.

BREAKING CHANGE: the external-NATS-ingest env vars are removed
(INGEST_MODE, STATUS_BACKEND, INGEST_BUS_URL, INGEST_BUS_NUM_REPLICAS,
FACT_EVENT_EMITTER). Use INGEST_QUEUE (memory|postgres) and the `worker`
command instead. TENANT_ID is retained (no longer NATS-subject-charset-validated).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-03 04:11:11 +02:00
Chris CoutinhoandGitHub d561b350d1 Merge pull request #831 from cbcoutinho/feat/document-pipeline-observability
feat(observability): astrolabe_* metrics + traces for the document pipeline
2026-06-03 02:08:46 +02:00
Chris CoutinhoandClaude Opus 4.8 b779627fa6 fix(observability): address third review round
Remaining items from the PR #831 Claude review:

- processor span symmetry: add "vector_sync.total_chars" to the sparse
  embedding span (already on the dense span) and drop the redundant
  "embedding.batch_size" attribute from both spans — it always equalled
  vector_sync.chunk_count and would mislead once batching is split.
- metrics: document the deliberate "throughput counts only on full success"
  contract in record_document_parse (partial extractions flagged
  success=False are counted as a parse-error but never inflate
  pages/chars/bytes throughput).
- config: extract _detect_base_provider() -> (family, model) as the single
  source of truth for the provider-detection priority chain, shared by
  get_embedding_model_name() and get_embedding_provider_family(). Preserves
  the intentional gateway asymmetry (only the family method short-circuits).
- base.py: Optional[...] -> PEP 604 `... | None`; drop now-unused import.

Behavior unchanged (get_embedding_* outputs covered by test_config.py).

Refs Deck #175, PR #831.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-03 02:01:28 +02:00
Chris CoutinhoandClaude Opus 4.8 8cae7d1708 fix(search): address PR #834 review findings
Resolve the latest PR-review comment on the verify-on-read tag-gate work:

- tests: stringify note IDs in test_verify_on_read.py so SearchResult.id
  matches production (scanner stringifies all IDs on write) — helper and the
  keeps/deleted/mixed/dedupe assertions (blocking).
- tests: make the unshared-file negative control a PDF so the drop is
  unambiguously "unshared", not a mime_type_filter mismatch.
- config: add Validator("VECTOR_SYNC_PDF_TAG", len_min=1) — an empty tag name
  would make find_files_by_tag("") misbehave in the verifier and scanner.
- verification: correct the _verify_files comment — two batch fetches (tag
  REPORT + EXCLUDED_TAGS lookup) are held under one semaphore slot; the
  pure-Python intersection runs outside it.
- tests: de-duplicate the minimal-PDF constant into a shared PDF_BYTES in
  tests/integration/conftest.py, imported by both integration modules.

Verified: ruff/format/ty/unit all green; the two integration modules
(10 tests) pass against a local Nextcloud (app-only, no MCP profile needed).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 23:09:46 +02:00
Chris CoutinhoandClaude Opus 4.8 d4dbf01b0a fix(search): gate verify-on-read file results on vector-index tag membership
Verify-on-read only checked file *accessibility* (file_accessible_by_id),
never tag membership, so a file removed from the `vector-index` tag (but
still readable) kept surfacing in semantic search, and stale points only
got evicted when they happened to rank in a search's top-K.

Rework `_verify_files` to gate on current `vector-index` tag membership via
a single batch `find_files_by_tag(tag, mime_type_filter="application/pdf")`
REPORT per search (plus a one-shot EXCLUDED_TAGS lookup for exclusion-wins
parity) — exactly what the scanner indexes. A file is kept iff it is in that
set, so untagged / deleted / excluded files drop out immediately and the
existing eviction wiring reclaims their Qdrant points. The gate is strict
for all file results, own and shared. Mirrors the batch-fetch-and-intersect
shape of `_verify_news_items` (one semaphore slot, fail-open on fetch error,
malformed-id keep).

- Promote the tag name to a `vector_sync_pdf_tag` Settings field (dynaconf
  env mapping VECTOR_SYNC_PDF_TAG) used by both scanner and verifier;
  drop the scanner's direct os.getenv.
- Expose `find_files_by_tag` on NextcloudClientProtocol.
- Rewrite the file-verifier unit tests (tagged/untagged/deleted/excluded/
  fail-open/non-numeric); update the ACL + verify-on-read integration tests
  to seed tagged PDFs.
- Amend ADR-019 and the configuration.md verify-on-read latency budget.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 21:14:44 +02:00
Chris CoutinhoandClaude Opus 4.8 68c9e20636 fix(observability): address second review round
- Failed deletes no longer bump astrolabe_documents_indexed_total: the outer
  except in process_document now gates doc_type on operation != "delete", so a
  delete error is counted as processed-error but not as an indexing event.
  Added test_failed_delete_is_processed_but_not_indexed.
- registry parse span: pass record_exception=True explicitly (matches
  instrument_tool) and add a structured logger.warning on the parse-error path
  (processor/tier/byte_size/duration_ms) for a Loki-aggregatable failed-parse
  signal.
- test_error_does_not_increment_throughput: snapshot-before/delta pattern
  instead of absolute 0.0 (counters are global singletons).
- config: document the deliberate gateway asymmetry between
  get_embedding_model_name() (no gateway branch) and
  get_embedding_provider_family() (short-circuits on gateway).
- Cleanup in touched scope: narrow `except (HTTPStatusError, Exception)` to
  `except Exception` (drop now-unused import); convert registry signatures from
  Optional[...] to `... | None`.

Refs Deck #175, PR #831.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 21:09:50 +02:00
Chris CoutinhoandClaude Opus 4.8 5d205fcaab feat(observability): astrolabe_* metrics + traces for the document pipeline
Make per-tier bottlenecks in the document-processing pipeline
(scan -> fetch -> parse -> chunk -> embed -> Qdrant upsert) visible via
metrics, traces, and structured logs. Today the document_processors layer
emits only a logger.info line: no metric, no span, and page counts live only
inside a log string. The single processing-duration histogram is unlabeled and
whole-document, so it cannot isolate parse vs embed vs upsert.

New astrolabe_* metric family (distinct from the mcp_* protocol metrics):
- astrolabe_document_parse_{duration_seconds,total} + pages/chars/bytes counters
  recorded at the ProcessorRegistry.process() boundary (covers all current and
  future processors uniformly)
- astrolabe_document_escalation_total (dormant; tiered-pipeline readiness)
- astrolabe_embedding_{duration_seconds,requests_total,chunks_total,chars_total}
- astrolabe_document_chunks_total, astrolabe_documents_indexed_total{source,status}

Tracing: new document_processor.parse child span + enriched embed/chunk span
attributes (provider/model/batch_size/chunk_count). Structured logs gain a
consistent field vocabulary (doc_id, doc_type, processor, tier, pages, chars,
byte_size, chunks, duration_ms, status) so Loki can aggregate without regex.

Tier-readiness: processor/tier are labels from day one and a tier property is
added to DocumentProcessor, so adding docling/OCR/LLM tiers later is additive
(new label values, never new metrics). Tenant comes from the kube namespace
label; mime_type/model are span attributes only (cardinality). Existing
mcp_vector_sync_*/mcp_qdrant_* are left untouched.

Refs Deck #175 (superset of #173 Phase 2). Dashboard/recording-rules follow-up
tracked on #175 for homelab-argocd.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 17:46:20 +02:00
Chris CoutinhoandClaude Opus 4.8 4f170d32cb fix(embedding): normalize gateway base_url to the /v1 base path
EMBEDDING_GATEWAY_URL is configured as a bare origin (scheme://host:port) —
the deployment's Service URL. GatewayProvider now appends the gateway's /v1
base path before handing the URL to the OpenAI SDK, so both embed posts
({base}/embeddings) and dimension discovery ({base}/models) land under /v1.
Idempotent: a URL already ending in /v1 is left unchanged.

This lets EMBEDDING_GATEWAY_URL stay a bare domain (matching the gitops
Service URLs) instead of requiring a hand-appended /v1.

Also align the `embedding_gateway_model` field default with _DEFAULTS
("mistral/mistral-embed"). The gateway catalog is provider-namespaced, and
_detect_dimension matches `entry.id == embedding_model`; the stale
un-namespaced default would silently miss the catalog entry and leave the
dimension unresolved (re-triggering the external-mode startup crash).

Tests: bare / trailing-slash / idempotent normalization + a bare-origin
discovery test asserting /v1/models. 16 gateway-provider tests pass;
providers + vector suites green (129 total); ruff clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-01 17:39:23 +02:00
Chris Coutinho d84a95842f feat(embedding): gateway provider discovers dimension via GET /v1/models
External-mode tenant pods CrashLoop at startup: Qdrant collection init calls
get_dimension() before any embed(), but GatewayProvider only learns its
dimension lazily after the first embed, and the gateway model isn't an OpenAI
model so the base class can't know it statically.

- Add GatewayProvider._detect_dimension() — the async startup hook the
  vector-sync bootstrap already invokes (vector/qdrant_client.py:
  hasattr(provider, "_detect_dimension")) for Ollama. It GETs the gateway's
  GET /v1/models and sets _dimension from the entry whose id matches the
  configured model. Best-effort: any failure (old gateway, model absent,
  network) leaves _dimension unset so the inherited lazy detect-on-first-embed
  still applies — never fatal. Presents the M2M bearer when configured.
- Switch the default embedding_gateway_model to the gateway's provider-
  namespaced id "mistral/mistral-embed" (the gateway routes on the "/"-prefix
  and sends "mistral-embed" upstream); collapse a duplicated config field.

Pairs with astrolabe-cloud-website#229 (gateway /v1/models, namespaced ids).

Tests: discovery sets dim w/o embed, sends bearer, non-fatal on
404/absent/error, skips when already known.
2026-05-31 23:43:19 +02:00
Chris CoutinhoandClaude Opus 4.8 d883052fb8 feat: add opt-in MCP decomposition hook points (design §10)
Adds the seven §10.2 hook-point modules + five env vars so Astrolabe Cloud can
offload document processing to the external document-processor / embedding
gateway. Purely additive: with every setting unset the server behaves exactly
as today, so self-hosters are unaffected (Deck #92).

Hook points (all default to current monolith behavior):
- config: EMBEDDING_PROVIDER, INGEST_MODE, STATUS_BACKEND,
  COLLECTION_METADATA_SOURCE, FACT_EVENT_EMITTER (+ supporting settings),
  validated in Settings.__post_init__ (fail-fast STATUS_BACKEND=local with
  INGEST_MODE=external); shared canonical.py.
- vector/payload_keys.py + acl_hash.py: cross-impl NAMESPACE/point_id (§2.2)
  and BLAKE2b-128 ACL hash (§11), pinned by fixtures shared with the
  document-processor repo.
- embedding/gateway_client.py: OpenAI-compatible GatewayProvider authenticating
  via M2M OIDC client-credentials (separate realm); manual-only registry entry.
- vector/collection_metadata.py: sentinel-point / API metadata source with env
  fallback.
- vector/queue/: hexagonal ingest producer ports + memory/NATS adapters
  (Postgres seam); INGEST_MODE=external publishes mcp.ingest.requested.{tenant}
  instead of the in-memory stream and skips the in-process processor pool. The
  lifespan becomes a composition root across both deployment branches.
- vector/queue/status.py: STATUS_BACKEND=bus subscriber feeding a StatusStore
  the vector-sync status endpoint reads.
- admin/payload_backfill.py: POST /api/v1/admin/payload-backfill (admin scope);
  processor writes the new payload keys; query-side ACL pre-filter gated behind
  ACL_PREFILTER_ENABLED (default off).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-05-29 13:13:25 +02:00
Chris CoutinhoandClaude Opus 4.7 a5cbe91b29 fix(vector-sync): sweep placeholder orphans at Pod startup (#101)
When the per-tenant nextcloud-mcp-server Pod OOMKills mid-batch, the
in-memory anyio processor queue is lost but the placeholder Qdrant
points (is_placeholder=true, status=pending) survive. The next Pod's
scanner re-runs, sees the existing placeholders, applies the
5 × VECTOR_SYNC_SCAN_INTERVAL staleness gate (~5h with the deployed
1h scan interval), and skips them. Result: 0 documents indexed for
the duration of the gate after every restart.

Stamps a process-level instance_id (UUID per Pod-process) onto every
placeholder write. A new sweep_orphan_placeholders helper, called
once from starlette_lifespan after the Qdrant client is initialised
and before the scanner / user-manager spawns, scrolls the collection
and deletes any placeholder whose instance_id doesn't match the
current Pod's (including placeholders with no instance_id field —
back-compat for pre-fix Pod versions). The scanner's next cycle
naturally re-creates fresh placeholders and queues work normally;
no DocumentTask reconstruction needed.

Sweep is one-shot at startup, not periodic — the existing staleness
gate still covers same-Pod recovery, and the cross-Pod-restart gap
was the only failure mode. Failure is non-fatal (logged via
vector_sync.orphan_sweep_failed) so a transient Qdrant hiccup at
boot doesn't prevent the scanner from running.

Both lifespan branches (single-user BasicAuth, OAuth / multi-user
BasicAuth) call the sweep via a module-local helper. A new
VECTOR_SYNC_ORPHAN_SWEEP_ENABLED setting (default True) provides
an escape hatch.

Closes Deck #101.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-22 21:03:23 +02:00
Chris CoutinhoandClaude Opus 4.7 e98903c502 fix(storage): address review on PR #799 (stale comments, docs deprecation, unit test)
claude-review on #799 flagged:

1. Stale inline comment in ``initialize()`` (line 466) still said
   "Postgres uses a small bounded pool". Updated to reflect both
   backends now use NullPool.

2. Stale ``close()`` docstring referenced pool-size starving
   max_connections — irrelevant with NullPool. Replaced with the
   NullPool-aware rationale (dispose still tears down in-flight
   asyncpg connections cleanly).

3. ``docs/configuration.md`` actively directed operators to tune
   DATABASE_POOL_SIZE / DATABASE_MAX_OVERFLOW, with worked
   examples and pool math. Both are now deprecated no-ops; the
   table entries explain the deprecation and link to PR #799.
   Operators reading the docs will no longer be confused into
   tuning settings that don't do anything.

4. ``config.py`` comment for the deprecated fields updated to
   record the deprecation. Validators are intentionally kept
   (still reject < 1 / < 0) so misconfigured deploys fail loudly
   rather than silently — the reviewer flagged this as a minor
   UX wart but explicitly "not a blocker"; the docs change in (3)
   keeps operators away from the config altogether.

5. New ``tests/unit/test_storage_engine.py`` with three tests:
   - ``test_postgres_engine_uses_nullpool`` — pins ``isinstance(
     engine.pool, NullPool)`` so a refactor back to QueuePool /
     SingletonThreadPool can't silently re-introduce the cross-
     event-loop crashes.
   - ``test_postgres_engine_ignores_pool_sizing_settings`` —
     setting DATABASE_POOL_SIZE / DATABASE_MAX_OVERFLOW to huge
     values must not change pool type (proves the deprecated
     fields are wired-up no-ops).
   - ``test_postgres_engine_missing_asyncpg_driver_message`` —
     guards the existing actionable-error branch when the
     optional ``[postgres]`` extra isn't installed.

Verified:
- ``uv run pytest tests/unit/`` — 1028 passed
- ``uv run ruff check`` clean on the touched python files

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-17 18:45:14 +02:00
Chris CoutinhoandClaude Opus 4.7 d717c64750 fix(storage): address PR #798 round-4 review (NOSONAR syntax + pg_advisory_lock + engine dispose + nits)
Addresses all 8 items in the round-4 bot review plus 4 remaining
SonarQube OPEN issues that were silently broken by round 3's
malformed NOSONAR markers.

NOSONAR syntax fix (clears the remaining 4 OPEN SQ issues)
----------------------------------------------------------
Round 3 used ``# NOSONAR S<rule_key>`` form. SonarQube Python doesn't
recognize the rule-key suffix — it treats the whole thing as a
malformed suppression directive (S7632) AND lets the underlying rule
keep firing (S7503 on ``_Cursor.__aenter__/__aexit__``).

Switch every marker to bare ``# NOSONAR``, with the rationale moved
into a preceding comment block. Affected sites:
- storage.py: ``_Cursor.__aenter__``, ``_Cursor.__aexit__``
- config.py: ``get_database_ssl()`` ``return False`` + ``ssl.create_default_context()``
- test_storage_logging.py: ``SENTINEL_PASSWORD_FRAGMENT`` constant
- test_storage_postgres.py: three ``bob_pw_v1`` / ``bob_pw_v2`` / ``carol_pw`` literals

Bot 🔴#1 — defensive NOSONAR on get_database_ssl `return False`
--------------------------------------------------------------
Bot predicted S4830 fires on the operator-opt-out path. SQ output
shows it doesn't currently fire, but bare NOSONAR added defensively
with rationale comment.

Bot 🔴#2 — defensive NOSONAR on f-string SQL
--------------------------------------------
``update_oauth_session`` builds its SET clause via ``f"{', '.join(update_fields)}"``;
``get_audit_logs`` builds its WHERE clause via string concatenation.
Both are safe (the fragments only come from this function's own
branches, no user input), but the patterns trip taint analysers.
Annotated both with bare NOSONAR + safety comment explaining the
hardcoded-fragments invariant. Note: S2077 doesn't currently fire
on these; defensive.

Bot 🟡#3 — pg_advisory_lock for concurrent migrations
-----------------------------------------------------
Without coordination, two pods rolling-updating simultaneously can
both observe ``has_alembic=False`` and both try to apply migrations
from scratch — the second crashes with "relation already exists".

New ``_migration_lock()`` async context manager:
- On Postgres: ``SELECT pg_advisory_lock(:lock_id)`` on a fresh
  connection (separate from the engine pool so it survives the
  ``to_thread.run_sync`` worker), held across BOTH the schema-inspect
  AND the migration call. Without that span, two pods could each
  observe "no alembic_version" before either started migrating,
  defeating the lock.
- On SQLite: yields immediately (file-level locking serializes
  writes natively).

Lock ID derived from
``sha256(b"nextcloud-mcp-server:migrations")[:8]`` as a stable signed
int64 so we can't collide with other apps sharing the same Postgres.

Bot 🟡#4 — RefreshTokenStorage.close() + lifespan wiring
--------------------------------------------------------
New idempotent ``close()`` method calls ``await engine.dispose()``,
nulls the engine, resets ``_initialized``. Wired into both
``app_lifespan_basic`` (BasicAuth) and the OAuth lifespan teardown,
each wrapped in ``try/except Exception`` with ``logger.warning`` so a
buggy dispose can't block SIGTERM. Without this, pooled asyncpg
connections leak server-side slots until
``idle_in_transaction_session_timeout`` reaps them — with small pool
defaults and frequent k8s rolling restarts this can starve
``max_connections``.

Bot 🟢#5 — is_sqlite_url docstring on :memory:
----------------------------------------------
Updated docstring to note both file-backed and in-memory forms are
recognized; caller is responsible for ``:memory:`` magic.

Bot 🟢#6 — db_path via make_url(...).database
---------------------------------------------
Replaced ``database_url.split("///", 1)[1]`` hack with SQLAlchemy's
own URL parsing. Naturally handles in-memory (``.database is None``
→ falls back to ``""``). Same lazy-import pattern as the existing
``mask_db_password`` to avoid module-import-time cost.

Bot 🟢#7 — _to_sync_url unrecognized-driver guard
-------------------------------------------------
Pulled ``_KNOWN_ASYNC_DRIVERS = ("aiosqlite", "asyncpg")`` into a
module constant. When an unrecognized ``+<driver>`` token survives
the strip, emits ``logger.warning`` with the known-supported list.
Behavior unchanged for valid URLs.

Bot 🟢#8 — get_audit_logs SELECT * → explicit columns
-----------------------------------------------------
Replaced ``SELECT *`` with explicit column list. Future schema
additions stay out of the dict return.

New tests
---------
- ``test_close_disposes_engine``: pins the public contract — engine
  nulled, state reset, second call is a no-op.
- ``test_concurrent_initialize_serialized_by_advisory_lock``: spawns
  3 concurrent inits against a fresh schema; asserts no "relation
  already exists" and exactly one ``alembic_version`` row at the end.
  Without the lock, this reliably fails on the second concurrent
  task.

Docs
----
- ADR-026: new "Concurrent migrations across pods" subsection
  documents the advisory-lock approach + lock-ID derivation.

Verification
------------
- ``uv run pytest tests/unit/`` — 1025 passed.
- ``TEST_DATABASE_URL=… uv run pytest tests/integration/test_storage_postgres.py -m postgres`` — 9 passed (was 7).
- ``ruff check && ruff format --check && ty check`` — clean.

Expected post-push: SQ scan reports 0 OPEN issues (was 4).

Tracked on Astrolabe Cloud POC board, card #99.

---

_This PR was generated with the help of AI, and reviewed by a Human_

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-17 09:25:42 +02:00
Chris CoutinhoandClaude Opus 4.7 51419329b0 fix(storage): address PR #798 round-3 review (SonarQube + pool sizing + RETURNING test)
Round-3 fixes. Two threads:
- 9 OPEN SonarQube issues caused the "E Security Rating on New Code"
  gate failure. The bot's diagnosis (sa.text(text_sql) → SQL injection)
  was a wrong guess; the actual SQ rules firing were different.
- Bot's substantive concerns: pool defaults too aggressive,
  delete_browser_session RETURNING path untested on Postgres,
  schema_version legacy table created on Postgres, stale module
  docstring.
- User's underlying question on the pool: "isn't 1 connection enough?"
  Right-sized to 2+5 and documented the concurrency model in ADR-026
  so the rationale is durable.

SonarQube quality-gate fixes (clears all 9 OPEN issues)
-------------------------------------------------------
- BLOCKER S6418: rename `SECRET` constant in test_storage_logging.py
  to `SENTINEL_PASSWORD_FRAGMENT` + NOSONAR with rationale.
- CRITICAL S3776: extract `_build_postgres_engine()` from
  `initialize()` (was complexity 26 > 15); incidentally creates a
  clean unit-test seam for engine args.
- CRITICAL S4423: `ssl.create_default_context(cafile=...)` is flagged
  as "weak protocol" — Python 3.10+ already negotiates the strongest
  available protocol. Explicitly pass `purpose=ssl.Purpose.SERVER_AUTH`
  and NOSONAR with the Python-version rationale.
- MAJOR S3358: split the TLS-mode nested ternary in the engine
  factory into a `_describe_ssl_arg()` helper.
- MAJOR S2068 ×3: bind test app-password literals to local vars and
  put `# NOSONAR S2068` on the same line as the literal (anchoring
  requirement) instead of on the closing paren.
- MINOR S7503 ×2: `# NOSONAR S7503` on `_Cursor.__aenter__/__aexit__`
  — they MUST be `async` per the context-manager protocol.

Pool sizing right-sized (answers "why so many connections?")
------------------------------------------------------------
- `DATABASE_POOL_SIZE` default 10 → **2**.
- `DATABASE_MAX_OVERFLOW` default 20 → **5**.
- Per-pod max drops from 30 to 7. With 3 replicas, total = 21
  connections (was 90) — well under managed-Postgres
  `max_connections=100`.
- New INFO log at startup: `Postgres engine ready: pool_size=N
  max_overflow=M (per-pod max K connections)`. Surfaces the active
  sizing without grepping config.
- New ADR-026 § "Concurrency model and pool sizing" explains
  asyncpg's single-flight connection semantics, the MCP workload
  shape (read-mostly point lookups), why-not-1 (multi-user
  serialization), and the tune-up/tune-down recipe.
- `docs/configuration.md` table updated with new defaults +
  homelab-vs-prod tuning guidance, linking the ADR.

RETURNING path covered on Postgres
----------------------------------
- New `test_browser_session_delete_returning` exercises the
  `DELETE … RETURNING user_id` path — the only RETURNING clause in
  the storage layer and the most dialect-sensitive SQL in this PR.
  Asserts both present-row (returns True, row gone) and absent-row
  (returns False) branches.

Schema portability polish
-------------------------
- `alembic 001`: gate `schema_version` table creation on
  `op.get_bind().dialect.name == "sqlite"`. The table exists purely
  to match the fingerprint of pre-Alembic SQLite databases; fresh
  Postgres installs no longer carry the dead legacy table.

Misc polish
-----------
- Module docstring: "SQLite-based" → "SQL-backed", with a sentence
  on the DATABASE_URL opt-in and an ADR-026 link.
- Comment on `_wrap_row` noting `row._mapping` is the documented
  RowMapping accessor in SQLAlchemy 2.x despite the underscore.

Skipped (rationale in PR reply)
-------------------------------
- `_qmark_to_named` SQL-comment handling: docstring already notes
  the limitation; no `?` in storage SQL comments today.
- Module-level `anyio.Lock()`: established precedent confirmed by
  the bot itself.
- `get_audit_logs` `SELECT *`: pre-existing pattern, out of scope.

Verification
------------
- `uv run pytest tests/unit/` — 1025 passed.
- `TEST_DATABASE_URL=… uv run pytest tests/integration/test_storage_postgres.py -m postgres` — 7 passed.
- `ruff check && ruff format --check && ty check` — clean.
- Confirmed `schema_version` absent on fresh Postgres, still present
  on fresh SQLite.

Tracked on Astrolabe Cloud POC board, card #99.

---

_This PR was generated with the help of AI, and reviewed by a Human_

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 19:33:23 +02:00
Chris CoutinhoandClaude Opus 4.7 f2b7bf132f fix(storage): address PR #798 review feedback (credentials, asyncpg extra, TLS, pool)
Round-2 fixes after the bot review on PR #798 plus two user follow-ups
(self-signed Postgres support; asyncpg should be a PyPI extra). Folded
into the same PR rather than a follow-up since the work is still
unmerged.

Security
--------
- Mask database credentials in all 5 log call sites (storage.py × 4,
  migrations.py × 1) via a new `mask_db_password()` helper in config.py.
  Uses SQLAlchemy's `make_url(...).render_as_string(hide_password=True)`
  with a regex fallback so the masking path never raises.
- New `tests/unit/test_storage_logging.py` asserts a sentinel password
  never appears in `caplog` during `RefreshTokenStorage.initialize()`.

Distribution
------------
- `asyncpg` moved to `[project.optional-dependencies] postgres` so a
  vanilla `pip install nextcloud-mcp-server` no longer pulls in the
  ~5 MB C extension. The Docker image runs `uv sync --extra postgres`,
  so containerized deployments are unchanged.
- When `DATABASE_URL=postgresql+asyncpg://...` is set on a venv missing
  the extra, `RefreshTokenStorage.initialize()` raises a friendly
  RuntimeError pointing at `[postgres]` rather than the generic
  ModuleNotFoundError.

TLS for the Postgres backend
----------------------------
- New `DATABASE_VERIFY_SSL` + `DATABASE_CA_BUNDLE` env vars mirror the
  existing `NEXTCLOUD_VERIFY_SSL` / `NEXTCLOUD_CA_BUNDLE` pattern
  (validators in Settings.__post_init__, `get_database_ssl()` helper
  alongside `get_nextcloud_ssl_verify()`). `DATABASE_VERIFY_SSL=false`
  wins over `DATABASE_CA_BUNDLE` for incident-response convenience.
- Default is **None** rather than True — keeps PR #798's behavior
  intact for cluster-internal Postgres that runs without TLS. Operators
  opt into verify-full or supply a private CA. ADR-026 records the
  reasoning vs the Nextcloud HTTPS default.
- Engine factory in `storage.py` passes `ssl` via `connect_args` only
  when `get_database_ssl()` returns non-None; otherwise asyncpg's
  default (`prefer`) applies.
- Storage logs which TLS mode is active at INFO (no secret material).

Configurable connection pool
----------------------------
- `DATABASE_POOL_SIZE` (default 10) and `DATABASE_MAX_OVERFLOW`
  (default 20) replace the hardcoded engine values. With many replicas
  this can blow past managed-Postgres `max_connections=100`; tune down
  for large fleets.
- gte-1 / gte-0 validators in __post_init__ reject 0/negative pool
  sizes at startup with the offending value in the error.

Consistency polish
------------------
- Migration 006: convert raw `op.execute("ALTER TABLE ... ADD COLUMN")`
  to `op.batch_alter_table(...).add_column(sa.Column("nonce", sa.Text))`
  for stylistic consistency with the rewritten 001-005. Downgrade now
  drops the column instead of being a no-op.
- `registered_webhooks.created_at` standardized from `sa.Float` to
  `sa.BigInteger` (all other `*_at` columns); `store_webhook()` casts
  `time.time()` → `int`.
- `is_sqlite_url()` made case-insensitive.

Testing
-------
- New `tests/integration/test_storage_postgres.py::test_cleanup_expired_roundtrip`
  exercises `cleanup_expired_tokens`, `cleanup_expired_sessions`, and
  `cleanup_expired_browser_sessions` — relies on DELETE rowcount,
  historically dialect-tricky.
- `tests/unit/test_ssl_config.py` extended with `TestDatabaseSSLSettings`
  + `TestGetDatabaseSSL` classes (9 new tests) mirroring the existing
  Nextcloud SSL tests one-for-one.

Docs
----
- `docs/configuration.md` Centralized-Storage section grew the four new
  env vars + a homelab example with a private CA.
- `docs/ADR-026` grew Distribution, TLS, and `alembic/env.py` async-pattern
  subsections explaining the non-obvious design choices.

Helm chart counterpart in cbcoutinho/helm-charts PR #34 (separate
commit on `feat/nextcloud-mcp-server-database-url`).

Verification
------------
- `uv run pytest tests/unit/` — 1025 passed.
- `TEST_DATABASE_URL=... uv run pytest tests/integration/test_storage_postgres.py -m postgres` — 6 passed (including new cleanup test).
- `uv run ruff check && uv run ruff format --check && uv run ty check -- nextcloud_mcp_server` — clean.

Tracked on Astrolabe Cloud POC board, card #99.

---

_This PR was generated with the help of AI, and reviewed by a Human_

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 18:53:45 +02:00
Chris CoutinhoandClaude Opus 4.7 292cbb3292 feat(storage): pluggable database backend via DATABASE_URL (ADR-026)
Adds a `DATABASE_URL` setting that lets `RefreshTokenStorage` run against
any SQLAlchemy async backend, primarily `postgresql+asyncpg://...` for
HA k8s deployments. Default behavior is unchanged: when `DATABASE_URL` is
unset the server falls back to the existing `TOKEN_STORAGE_DB` path /
ephemeral SQLite tempfile.

Why
---
Today every MCP pod needs its own PVC to hold the SQLite file, which
pins the Deployment to one replica and blocks horizontal scaling. With
this change, operators can point all replicas at a shared Postgres
(CNPG, RDS, etc.) and the pods become stateless. Encryption stays in
Python (Fernet); the database only sees ciphertext.

What changed
------------
- `config.get_database_url()` resolves DATABASE_URL → TOKEN_STORAGE_DB →
  ephemeral tempfile in that priority order.
- `RefreshTokenStorage` builds a process-shared `AsyncEngine` in
  `initialize()`. SQLite gets NullPool; Postgres gets pool_size=10,
  max_overflow=20, pool_pre_ping=True. 30 aiosqlite call sites adapted
  via a thin `_DBConn` / `_Cursor` / `_Row` / `_ExecuteCtx` shim so
  existing method bodies need no churn beyond the connection
  context-manager swap.
- 7 `INSERT OR REPLACE` statements rewritten as portable
  `INSERT ... ON CONFLICT (...) DO UPDATE` (SQLite ≥ 3.24, Postgres ≥ 9.5).
- `sqlite_master` legacy-detection lookup replaced with SQLAlchemy
  inspector so the path works against either backend.
- File-permission hardening + parent-dir creation gated on
  `is_sqlite_url(...)` — centralized backends manage their own filesystem.
- Alembic migrations 001/002/003/005 converted from raw `op.execute(SQL)`
  to portable `op.create_table()` / `op.create_index()` with SQLAlchemy
  types. All timestamp columns are `sa.BigInteger` so Postgres allocates
  BIGINT (unix epochs don't fit in INT4). SQLite treats BIGINT as
  INTEGER, so existing deployments at revision 006 see no schema drift.
- `migrations.py` + CLI take URLs; `db {upgrade,downgrade,current,history}`
  gain `--database-url / -u` alongside the legacy `--database-path / -d`.
  `get_current_revision()` uses SQLAlchemy inspector instead of raw
  sqlite3, so the CLI works against Postgres too.
- `docker-compose.yml` adds a `postgres-test` service under the
  `postgres` profile (pinned `postgres:16-alpine` digest) for
  integration testing.
- Unit storage tests parametrized over backends via shared
  `tests/fixtures/storage_backend.py` — every test in
  `test_app_password_storage.py` and `test_webhook_storage.py` runs
  once per backend that is available. Postgres is opted in by
  `TEST_DATABASE_URL`.
- New `tests/integration/test_storage_postgres.py` (5 tests, marked
  `postgres` + `integration`) covers refresh-token, app-password,
  OAuth-session, webhook, and audit-log paths end-to-end on Postgres.
- New `docs/ADR-026-pluggable-database-backend.md` records the decision;
  `docs/configuration.md` documents `DATABASE_URL` with examples.

Out of scope
------------
- No SQLite → Postgres data migration tool (clean cutover; tokens reissue
  on next login, webhooks re-register on next sync tick).
- This repo does not provision Postgres. The matching helm chart change
  lives in cbcoutinho/helm-charts (database.url / existingSecret values).

Verification
------------
- `uv run pytest tests/unit/` — 1012 passed, SQLite path unchanged.
- `docker compose --profile postgres up -d postgres-test`
- `TEST_DATABASE_URL=... uv run pytest tests/integration/test_storage_postgres.py -m postgres -v`
  — 5 passed.
- `TEST_DATABASE_URL=... uv run pytest tests/unit/test_app_password_storage.py
  tests/unit/test_webhook_storage.py` — 50 passed (25 per backend).
- `uv run ruff check && uv run ruff format --check && uv run ty check -- nextcloud_mcp_server` — clean.

Tracked on Astrolabe Cloud POC board, card #99.

---

_This PR was generated with the help of AI, and reviewed by a Human_

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 18:06:42 +02:00
Chris CoutinhoandClaude Opus 4.7 79ea4e9e21 fix(config): emit background-ops advisory logs once per process
`_get_background_operations_enabled()` was emitting three advisory log
lines (1 INFO + 2 deprecation WARNINGs) on every call. Because
`get_settings()` is intentionally non-cached and runs on every MCP tool
invocation via `get_client()`, the "Automatically enabled background
operations for semantic search in multi-user mode" INFO line was
firing per-request — 569 entries/hour in one production tenant.

Gate the three log emissions behind a module-level
`_bg_ops_advisories_logged` flag, mirroring the existing
`_warn_missing_secret_once` precedent in
`vector/webhook_receiver.py`. The boolean-derivation path stays
unchanged, so the `Settings` value remains fresh per call.

Extends the autouse `_reload_dynaconf_after_test` fixture to reset the
new flag between tests, and adds two regression tests that call
`get_settings()` five times and assert each advisory fires exactly once.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-16 13:07:50 +02:00
Chris Coutinho 55ca44c9ec Merge remote-tracking branch 'origin/master' into chore/lazy-logging-g004-sweep
# Conflicts:
#	nextcloud_mcp_server/vector/oauth_sync.py
2026-05-13 01:40:32 +02:00
Chris CoutinhoandClaude Opus 4.7 665cb9b1eb refactor: convert f-string logging to lazy %-style format (G004)
Sweep all 1676 G004 violations across 112 files, converting
`logger.<level>(f"…{x}…")` to `logger.<level>("…%s…", x)`.

Why: ruff rule G004 was added to pyproject.toml to enforce lazy
%-style logging — defers formatting until the log level is enabled
and lets structured log tooling match the unformatted template.

Conversion preserves rendered output byte-for-byte:
- `{x}` → `%s` + `x`
- `{x!r}` / `{x!s}` / `{x!a}` → `%r` / `%s` / `%a`
- Format specs (`{x:.2f}`, `{x:>10}`) → `%s` + `format(x, 'spec')`
  (printf-style specs aren't 1:1 with Python format specs, so we
  delegate to `format()` to keep identical output)
- Literal `%` → `%%`
- Concatenated f-strings (`f"a {x} " "b"`) flattened
- Trailing kwargs (`exc_info=True`) preserved

Verified:
- `uv run ruff check --select G004` → 0 violations
- `uv run ty check -- nextcloud_mcp_server` → passes
- `uv run pytest tests/unit/` → 1010 passed

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 01:12:17 +02:00
Chris CoutinhoandClaude Opus 4.7 18db9d6cb3 refactor: prune dead pre-LOGIN_FLOW config/runtime branches
Two small post-merge cleanups deferred from PR #787 (ADR-022 follow-up).
Both were explicitly noted in the reviewer's "acknowledged deferred items"
list.

1. config.py: drop `enable_multi_user_basic_auth` and `enable_login_flow`
   from the dynaconf `_DEFAULTS` dict. They were removed from `_field_map`
   in PR #787, so `get_settings()` never read them anyway, but their
   presence in `_DEFAULTS` was visually misleading — readers might think
   they could be set via TOML when in fact `Settings.__post_init__`
   derives them from `MCP_DEPLOYMENT_MODE`. Replaced with a NOTE comment
   pointing at the canonical derivation site.

2. app.py: the lifespan code had
   `use_basic_auth = not oauth_enabled or settings.enable_login_flow`,
   which became always-True once PR #787 enforced
   `oauth_enabled ↔ enable_login_flow` via __post_init__. Hard-coded to
   `True` with a comment explaining the invariant and pointing at the
   separate follow-up that will prune the now-unreachable
   `use_basic_auth=False` code paths in `vector/oauth_sync.py` (which
   includes deleting the `use_basic_auth` parameter from
   `user_manager_task` / `oauth_processor_task` and the OAuth-token-refresh
   branch in `get_user_client`). Kept the variable name and the call-site
   conditionals as-is for now so that follow-up is a clean mechanical
   diff.

No runtime behaviour change: `use_basic_auth` already evaluated to True
in every supported mode after PR #787, and the `_DEFAULTS` entries were
already shadowed by `__post_init__`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 23:56:44 +02:00
Chris CoutinhoandClaude Opus 4.7 1fa4c82fd2 chore: address review-round-4 nits — stale delenv, upgrade hint, in-sync notes
Four small follow-ups from the reviewer's latest pass:

- tests/unit/test_stdio.py:18: the single_user_env fixture used
  monkeypatch.delenv("ENABLE_MULTI_USER_BASIC_AUTH", ...). That env var
  is no longer read after the ADR-022 follow-up; switched to delenv of
  MCP_DEPLOYMENT_MODE which is the canonical mode-selection input today.
  Comment updated to match.
- config_validators.py: when detect_auth_mode rejects an invalid
  MCP_DEPLOYMENT_MODE, surface a one-line ADR-022 migration hint if the
  rejected value is exactly "oauth_single_audience" (the most common
  upgrade pain — users carrying that value over from ADR-021 .env files).
  Other invalid values get the regular "Valid values: …" message
  unchanged.
- config.py + config_validators.py: added cross-reference comments on
  both mode-resolution sites (Settings.__post_init__ and
  detect_auth_mode) noting that they each compute the canonical mode
  independently and must be kept in sync when a new mode is added.
  Surfaces the parallel-duplication intentionally so the next maintainer
  doesn't have to discover it.
- docs/ADR-021-configuration-consolidation.md:92: appended a trailing
  comment to the historical "valid values" example, marking
  oauth_single_audience and oauth_token_exchange as removed in ADR-022.
  ADR-021 stays as the historical record; the trailer points future
  readers at the current state.

No functional changes; 1009 unit tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 22:35:50 +02:00
Chris CoutinhoandClaude Opus 4.7 ade42b55dc docs: clear review-round-3 nits — stale login_flow_v2, duplicates, field comments
Five small findings from the reviewer's third round, plus a SonarCloud
quality-gate failure on a test fixture.

- docs/troubleshooting.md, docs/configuration.md: six pre-PR references
  to a non-existent `login_flow_v2` mode value (the actual enum value is
  `login_flow`). They predated this PR but became actively misleading
  once `detect_auth_mode` started raising ValueError for anything not in
  the mode_map. Replaced with `login_flow` via sed.
- docs/configuration-migration-v2.md: removed a duplicate
  `MCP_DEPLOYMENT_MODE=multi_user_basic` line in the troubleshooting
  section (around line 447) — same shape as the round-2 duplicate
  caught earlier in the migration-steps section. Also dropped the
  `oauth_token_exchange` row from the mode-value table around line 364
  (that enum value was removed in 57303135 and would now raise
  ValueError from detect_auth_mode).
- nextcloud_mcp_server/config.py: field comments for
  `enable_multi_user_basic_auth` and `enable_login_flow` said
  "Auto-set by detect_auth_mode()" but the derivation moved into
  `Settings.__post_init__` in the previous commit. Updated both.
- tests/unit/test_config_validators.py: SonarCloud's python:S2068
  flagged `nextcloud_password="hunter2"` in the
  `test_login_flow_mode_auto_derives_enable_login_flow_flag` fixture I
  added in commit 5 as a potentially hard-coded credential. Other
  fixtures in the same file use the literal `"password"` and aren't
  flagged (they predate the PR and SonarCloud only checks new-code).
  Switched to `"password"` to match the existing convention.

No functional changes; all 1009 unit tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 21:25:51 +02:00
Chris CoutinhoandClaude Opus 4.7 6e7c821761 fix(config): derive mode flags in Settings.__post_init__; address review round 2
The integration jobs for `mcp-multi-user-basic` and `mcp-login-flow`
were failing with HTTP 500s. Root cause: `get_settings()` builds a
fresh Settings on every call (not cached). Commits 3 and 4 set the
derived `enable_login_flow` / `enable_multi_user_basic_auth` flags as
a side effect of `detect_auth_mode`. detect_auth_mode runs once at
startup, against the Settings instance owned by `validate_configuration`.
Every per-request call site that does `settings = get_settings()` got
a fresh Settings with both flags at their default `False` (since the
env-var aliases were dropped), causing the multi-user dispatcher in
`context.py` to take the wrong branch and crash.

Fix: move the derivation into `Settings.__post_init__`. Every Settings
instance now carries correct flags from the moment it's constructed —
no caching needed, no mutation-after-construction race. detect_auth_mode
becomes a pure reader of the already-derived state.

The legacy env-var deprecation check moves with it. It also picks up
the reviewer's truthy-string fix: previously `os.getenv(legacy)` fired
for the literal string "false" (a non-empty Python string is truthy),
which would have errored on any user with a leftover
`ENABLE_LOGIN_FLOW=false` in their `.env`. The check now only fires
when the value lowercases to one of {"1", "true", "yes", "on"}.

- nextcloud_mcp_server/config.py: extend Settings.__post_init__ with
  the legacy-deprecation block and the derived-flag derivation
  (resolve mode from deployment_mode + username/password, set flags).
- nextcloud_mcp_server/config_validators.py: drop the
  `_sync_derived_flags` helper (superseded by __post_init__). Drop the
  legacy-env-var deprecation block (moved). `detect_auth_mode` is now
  pure — no mutation. Drop the now-unused `import os`.
- tests/unit/test_config_validators.py: legacy-env-var tests now
  expect `ValueError` at `Settings(...)` construction (via `get_settings()`),
  not at `detect_auth_mode` call. Added two new tests:
    * `test_legacy_env_var_check_ignores_falsy_strings` — pins the
      truthy-string fix (reviewer round 2 finding).
    * `test_derived_flags_stable_across_get_settings_calls` — regression
      test pinning the integration-test fix (two consecutive
      `get_settings()` calls return Settings instances with the same
      derived flags).
  Also reworked `test_login_flow_mode_auto_derives_enable_login_flow_flag`
  to assert at-construction derivation (not the old mutation pattern).
- docs/configuration-migration-v2.md: dropped the duplicate
  `MCP_DEPLOYMENT_MODE=multi_user_basic` line (review round 2 nit — a
  sed artifact from commit 4).
- docs/ADR-021-configuration-consolidation.md: sed-replaced the in-body
  `MCP_DEPLOYMENT_MODE=oauth_single_audience` examples with `login_flow`
  (review round 2 nit — only the status header was updated in commit 4).
- tests/conftest.py: docstring comment for the multi-user-basic fixture
  switched from `ENABLE_MULTI_USER_BASIC_AUTH=true` to
  `MCP_DEPLOYMENT_MODE=multi_user_basic` (review round 2 nit).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 20:44:17 +02:00
Chris CoutinhoandClaude Opus 4.7 282c245da1 refactor(config)!: drop ENABLE_MULTI_USER_BASIC_AUTH env var, fail loud on legacy aliases
Same pattern as the ENABLE_LOGIN_FLOW removal in the previous commit:
the deployment mode (MCP_DEPLOYMENT_MODE) is the single source of truth
for selecting an auth flow. The ENABLE_MULTI_USER_BASIC_AUTH env-var
alias is redundant with `MCP_DEPLOYMENT_MODE=multi_user_basic`.

Unlike the ENABLE_LOGIN_FLOW removal — where silent removal was safe
because Login Flow v2 is the auto-detection default — silent removal
here would be a surprise: a user with only ENABLE_MULTI_USER_BASIC_AUTH=true
in their .env would auto-detect into LOGIN_FLOW after upgrade (wrong
runtime mode). Mitigation: detect_auth_mode now reads os.environ
directly for both legacy aliases and raises ValueError with a one-line
migration message if either is set. Applied retroactively to
ENABLE_LOGIN_FLOW as well — loud is better than silent.

- nextcloud_mcp_server/config.py:
  - Drop the dynaconf env-var alias entry for ENABLE_MULTI_USER_BASIC_AUTH.
  - Update the `enable_multi_user_basic_auth` field docstring to mark it
    as derived / not user-settable.
  - `_is_multi_user_mode()` (early-config helper, runs before Settings
    is built) switched to checking MCP_DEPLOYMENT_MODE directly. Now
    consistent with the canonical detection in detect_auth_mode.
- nextcloud_mcp_server/config_validators.py:
  - Drop the auto-detection branch (`if settings.enable_multi_user_basic_auth`).
    Selection of MULTI_USER_BASIC is now exclusively via the explicit
    MCP_DEPLOYMENT_MODE branch.
  - Add `enable_multi_user_basic_auth` to `_sync_derived_flags` alongside
    `enable_login_flow` — both flags are now derived from the resolved mode.
  - Drop `enable_multi_user_basic_auth` from
    `MODE_REQUIREMENTS[MULTI_USER_BASIC].required` and from the
    `forbidden` lists of SINGLE_USER_BASIC and LOGIN_FLOW (no longer
    user input → no meaningful forbidden check).
  - Add loud-deprecation `ValueError` block at the top of detect_auth_mode
    that errors with a clear migration message when ENABLE_MULTI_USER_BASIC_AUTH
    or ENABLE_LOGIN_FLOW is found in os.environ.
- tests/unit/test_config_validators.py:
  - Switch ~10 fixtures from `enable_multi_user_basic_auth=True` to
    `deployment_mode="multi_user_basic"` (mirrors `enable_login_flow`
    treatment from the previous commit).
  - Switch two `patch.dict(os.environ, {"ENABLE_MULTI_USER_BASIC_AUTH": "true"})`
    blocks to use MCP_DEPLOYMENT_MODE.
  - Rename `test_forbidden_multi_user_basic_auth` to
    `test_forbidden_multi_user_basic_when_credentials_present` — the
    scenario is now an explicit-mode + credentials conflict, not an
    env-var-flag conflict.
  - Add `test_legacy_enable_multi_user_basic_auth_env_var_errors` and
    `test_legacy_enable_login_flow_env_var_errors` to exercise the new
    loud-deprecation ValueError path.
- docker-compose.yml: mcp-multi-user-basic profile switched to
  `MCP_DEPLOYMENT_MODE=multi_user_basic`.
- env.sample: replaced `#ENABLE_MULTI_USER_BASIC_AUTH=true` example with
  `#MCP_DEPLOYMENT_MODE=multi_user_basic`.
- docs/authentication.md, configuration.md, troubleshooting.md,
  auth-flows.md, webhook-management-guide.md,
  configuration-migration-v2.md, ADR-025: replaced env-var examples
  with the canonical MCP_DEPLOYMENT_MODE form.
- docs/ADR-020: marked partly superseded by ADR-022.
- CLAUDE.md: Multi-User BasicAuth section updated to set
  MCP_DEPLOYMENT_MODE.
- nextcloud_mcp_server/vector/oauth_sync.py: module docstring updated.

BREAKING CHANGE: ENABLE_MULTI_USER_BASIC_AUTH is no longer read from
the environment, and setting it now raises a startup ValueError with
a migration message. Replace `ENABLE_MULTI_USER_BASIC_AUTH=true` with
`MCP_DEPLOYMENT_MODE=multi_user_basic`. The same loud-deprecation
check is also applied to the recently-removed ENABLE_LOGIN_FLOW —
replace with `MCP_DEPLOYMENT_MODE=login_flow` (or drop both;
`login_flow` is the auto-detect default when no other auth env vars
are set).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 20:06:16 +02:00
Chris CoutinhoandClaude Opus 4.7 df4994e860 refactor(config)!: derive enable_login_flow from mode, remove ENABLE_LOGIN_FLOW env var
Once OAUTH_SINGLE_AUDIENCE was renamed to LOGIN_FLOW and the validation
gate ensured the only meaningful configuration was
`MCP_DEPLOYMENT_MODE=login_flow + ENABLE_LOGIN_FLOW=true`, the two
controls became redundant. Setting the mode is sufficient; the
ENABLE_LOGIN_FLOW env var doesn't add information.

This commit makes the deployment mode the single source of truth for
the Login Flow v2 toggle:

- `nextcloud_mcp_server/config.py`: drop the `ENABLE_LOGIN_FLOW`
  dynaconf env-var alias. The `enable_login_flow` field stays as an
  internal attribute so the 6 runtime call sites (app.py x4,
  context.py, auth/scope_authorization.py) keep working unchanged.
  Updated field docstring to flag it as derived.
- `nextcloud_mcp_server/config_validators.py`:
  - Drop `enable_login_flow` from `MODE_REQUIREMENTS[LOGIN_FLOW].required`.
  - Drop the validation gate that required ENABLE_LOGIN_FLOW=true for
    LOGIN_FLOW mode (no longer possible to misconfigure — the flag is
    derived, not user input).
  - Add `_sync_derived_flags()` helper called at every return path of
    `detect_auth_mode` to set `settings.enable_login_flow` from the
    resolved mode.
- `tests/unit/test_config_validators.py`: drop `enable_login_flow=True`
  from happy-path fixtures (no longer needed — detection sets it).
  Repurpose `test_login_flow_requires_enable_login_flow_flag` into
  `test_login_flow_mode_auto_derives_enable_login_flow_flag` which
  asserts the new auto-derivation behaviour for both LOGIN_FLOW and a
  non-LOGIN_FLOW mode.
- `docker-compose.yml`: remove `ENABLE_LOGIN_FLOW=true` from the
  `mcp-login-flow` and `mcp-keycloak` profiles.
- `env.sample`: remove the ENABLE_LOGIN_FLOW reference; the comment
  on `MCP_DEPLOYMENT_MODE` now notes the derived flag.
- `docs/configuration.md`, `docs/authentication.md`,
  `docs/login-flow-v2.md`, `docs/auth-flows.md`,
  `docs/troubleshooting.md`, `docs/ADR-025-*.md`: replace
  ENABLE_LOGIN_FLOW=true examples and references with
  MCP_DEPLOYMENT_MODE=login_flow.

BREAKING CHANGE: `ENABLE_LOGIN_FLOW` is no longer read from the
environment. Anyone who relied on `ENABLE_LOGIN_FLOW=true` to activate
Login Flow v2 should set `MCP_DEPLOYMENT_MODE=login_flow` instead (or
rely on it being the default when no other auth env vars are set).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 19:45:50 +02:00
Chris CoutinhoandClaude Opus 4.7 cafd318f36 refactor(config)!: rename OAUTH_SINGLE_AUDIENCE to LOGIN_FLOW, gate on ENABLE_LOGIN_FLOW
The AuthMode.OAUTH_SINGLE_AUDIENCE enum was a vestige of ADR-021's
original design where it co-existed with OAUTH_TOKEN_EXCHANGE. The
un-augmented OAuth bearer pass-through it represented relied on
Nextcloud-side patches to user_oidc (Bearer token validation on
non-OCS endpoints) that were never merged upstream (see
docs/authentication.md, docs/login-flow-v2.md). The working path —
mcp-login-flow profile — sets ENABLE_LOGIN_FLOW=true on top of this
mode so Login Flow v2 acquires per-user Nextcloud app passwords via
a browser flow. With OAUTH_TOKEN_EXCHANGE removed in 57303135, the
_AUDIENCE suffix in the Python name no longer disambiguates anything,
and the enum value diverged from the env-var spelling. ADR-022 (now
accepted) called for this rename as step 1 of consolidation.

- nextcloud_mcp_server/config_validators.py: rename enum to LOGIN_FLOW
  with value "login_flow". The mode_map key is now "login_flow"; the
  MODE_REQUIREMENTS entry requires `enable_login_flow=True`. Added a
  validation gate so MCP_DEPLOYMENT_MODE=login_flow without
  ENABLE_LOGIN_FLOW=true errors with a clear message pointing at
  ADR-022. Default auto-detection fallback returns LOGIN_FLOW.
- nextcloud_mcp_server/app.py: renamed three identifier references and
  switched the "Configuring MCP server for OAuth mode" log line to
  the uniform `mode.value` shape used by the other modes.
- nextcloud_mcp_server/api/management.py: renamed identifier in the
  /api/v1/status mapping. The user-visible "auth_mode": "oauth" string
  is preserved — that's a stable Astrolabe contract.
- nextcloud_mcp_server/config.py: updated Settings docstring.
- tests/unit/test_config_validators.py: renamed class
  TestOAuthSingleAudienceValidation → TestLoginFlowValidation,
  individual test methods, env-var strings; added enable_login_flow=True
  to fixtures expecting success; added a new test
  (test_login_flow_requires_enable_login_flow_flag) that exercises the
  validation gate.
- tests/unit/test_management_status_endpoint.py: renamed identifier.

BREAKING CHANGE: MCP_DEPLOYMENT_MODE=oauth_single_audience is no longer
accepted. Set MCP_DEPLOYMENT_MODE=login_flow (and keep
ENABLE_LOGIN_FLOW=true) for the same deployment. The un-augmented
OAuth path is no longer supported; if you previously ran the broken
path, you can either configure Login Flow v2 (recommended) or switch
to multi_user_basic / single_user_basic.

Dead-code pruning of `oauth_enabled and not enable_login_flow`
branches in app.py (lifespan, background sync) is deferred to a
separate follow-up PR per the consolidation plan in ADR-022.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 19:34:13 +02:00
Chris CoutinhoandClaude Opus 4.7 e360a7782b refactor(providers): address PR #772 review — shared retry, cleaner imports, no-op close
Addresses the Claude Code review on PR #772 plus the SonarCloud S1192 finding:

- Extract `retry_on_rate_limit` into `nextcloud_mcp_server/providers/_retry.py`
  as a parametric decorator. OpenAI and Mistral now share the same backoff
  loop; future providers can reuse it without copy-paste.
- New `tests/unit/providers/test_retry.py` covers the decorator: 429 retry +
  success, non-429 immediate re-raise, MAX_RETRIES exhaustion, default
  predicate, and unrelated exception passthrough.
- Tighten Mistral SDK import to `from mistralai.client.errors import SDKError`
  (the canonical sub-path; the reviewer's `from mistralai.models import
  SDKError` does not exist in mistralai 2.4.5).
- Replace `MistralProvider.close()`'s direct `__aexit__` call with a no-op +
  comment — the Speakeasy-generated client has no public close hook and the
  underlying httpx client is closed by GC.
- Extract the duplicated "Embedding not supported" message to a module-level
  constant (SonarCloud S1192).
- Align `Settings.get_embedding_model_name()` Bedrock check with the registry
  by also considering `bedrock_generation_model`.
- Add the `mock_mistral_client` fixture to
  `test_mistral_no_embeddings_disabled` for parity with the rest of the file.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 17:46:32 +02:00
Chris CoutinhoandClaude Opus 4.7 3268a13d11 feat(providers): add Mistral embedding provider, route registry through dynaconf
Adds a hosted Mistral embedding option (mistral-embed, 1024-dim) alongside
the existing Bedrock / OpenAI / Ollama / Simple providers. Implementation
mirrors OpenAIProvider: lazy dimension detection with a known-models lookup,
chunked batch requests, defensive index sort, and a 429-aware retry decorator.

In the same change, ProviderRegistry switches from os.getenv to the
dynaconf-backed Settings dataclass so all five providers share a single
configuration path. config.py gains the previously-uncovered Bedrock keys,
the new Mistral keys, the missing OPENAI_GENERATION_MODEL /
OLLAMA_GENERATION_MODEL, and SIMPLE_EMBEDDING_DIMENSION.

Auto-detection priority: Bedrock → OpenAI → Mistral → Ollama → Simple.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 17:25:24 +02:00
Chris CoutinhoandClaude Opus 4.7 22ed9e99a0 feat(webdav): add tag-based file exclusion (#710)
Hide sensitive files/folders from the WebDAV MCP tool surface by
tagging them with a configured Nextcloud system tag. Defence-in-depth
control for users who connect LLMs to accounts holding contracts,
medical records, credentials, etc.

A new EXCLUDED_TAGS env var (comma-separated tag names, empty by
default) gates an exclusion layer that runs at the start of every
WebDAV tool call: tag names are resolved to tag IDs, those IDs are
expanded to the set of tagged paths, then listings/searches are
filtered and read/write/delete/move/copy operations on excluded paths
raise ToolError. Tagged folders exclude their descendants via prefix
match. Empty EXCLUDED_TAGS disables the feature entirely.

The threat model is preventing accidental data exfiltration via the
LLM tool surface — not hiding files from a determined operator. The
docs explicitly recommend creating exclusion tags with
user_assignable=false so the credentials the MCP server uses cannot
remove the tag.

Implementation:

- config.py: add `excluded_tags` to _DEFAULTS, Settings, and the
  _field_map alongside other comma-separated env vars.
- client/webdav.py: get_files_by_tag now requests <d:resourcetype/>
  and surfaces is_directory so tagged directories can recursively
  exclude descendants.
- server/tag_exclusion.py (new): get_excluded_tag_names,
  get_excluded_file_paths, is_path_excluded.
- server/webdav.py: exclusion guards in all 11 WebDAV tools;
  read/write/create/delete/move/copy raise ToolError, list/search
  tools silently filter excluded entries. Existing f-string log
  calls converted to lazy %-style.
- tests: 17 new unit tests covering path-matching edge cases
  (shared-prefix non-match, descendants of excluded dirs), tag-name
  parsing, and get_excluded_file_paths with mocked WebDAV; 1 new
  client test asserting <d:resourcetype/> -> is_directory parsing.
- docs/configuration.md: new "Tag-Based File Exclusion" section with
  per-tool effect table, security guidance, and per-call cost note.
- README.md: feature mention under Key Features.

Closes #710.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-06 12:12:54 +02:00
Chris CoutinhoandClaude Opus 4.7 ce80a36877 fix(auth): address PR #757 round-3 review feedback
Three review items from the third-round review on PR #757:

- scope_authorization: split the combined logger.warning(error_msg) in
  the require_scopes decorator's missing-app-password branch into two
  lazy %-style logger calls (one per branch), keeping the f-string
  error_msg for the exception only. The else branch also logs the
  elicit_result for diagnostics. Bypassing lazy %-interpolation in
  security-sensitive code formatted the message regardless of log level
  and matched the repo-wide lazy-logging preference; the new code now
  conforms.
- config + browser_oauth_routes: wire COOKIE_SECURE through Settings
  (cookie_secure: bool | None = None) so _should_use_secure_cookies()
  reads it via get_settings() rather than os.getenv. Completes the
  consolidation pass that touched this file in commit 7464340 and
  removes the last raw os.getenv from browser_oauth_routes.py
  (import os dropped). Dynaconf auto-coerces "true"/"false" → bool;
  "1"/"0" arrive as int and are normalised by an explicit bool() at
  the consumer.
- elicitation: clarify the _astrolabe_settings_url docstring to call
  out that the empty-string case is also a None-return path (matches
  the existing `if not base:` guard).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 17:24:50 +02:00
Chris CoutinhoandClaude Opus 4.7 f3256e515e refactor(config): consolidate NEXTCLOUD_PUBLIC_ISSUER_URL through Settings
Lift NEXTCLOUD_PUBLIC_ISSUER_URL out of raw os.getenv reads into
Settings.nextcloud_public_issuer_url across all 8 production call sites
(app.py x2, oauth_routes.py x2, browser_oauth_routes.py,
provision_routes.py, userinfo_routes.py, elicitation.py). cli.py
remains the env-write source so the existing config-by-flag pipeline
still works.

Also addresses remaining PR #757 review nits:
- elicitation.py: align URL-present/absent wording on "open in your
  browser" so users don't try clicking in the terminal
- test_scope_authorization_stored.py: lock in the deliberately-shared
  fall-through branch with explicit declined/cancelled decorator tests
- test_elicitation.py: switch from monkeypatch.setenv to
  patch(get_settings) since Settings is now the canonical surface

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 16:16:19 +02:00
Chris CoutinhoandClaude Opus 4.7 ffcca23a7b refactor(search): address PR #750 round 5 review feedback
Tightens verifier consistency, closes test gaps, hardens the fire-and-forget
eviction snapshot, and routes the new concurrency knob through Settings.

- Pre-flight ``int()`` guard in ``_verify_notes`` mirrors ``_verify_deck_cards``,
  so a non-numeric note id produces a type-specific log line instead of
  falling through to the generic "unexpected error" branch.
- Adds explicit 403 tests for the file and news verifiers (symmetry with the
  existing notes/deck 403 tests) plus a ``non_numeric_id_keeps`` test.
- ``AppContext`` and ``OAuthAppContext`` no longer snapshot
  ``_vector_sync_state.eviction_task_group`` at lifespan-yield time. Both
  expose it as a ``@property`` that reads the singleton dynamically, removing
  the order-sensitive race where a future startup-ordering change could
  silently degrade fire-and-forget eviction to inline forever.
- Adds ``verification_concurrency`` (env var ``VERIFICATION_CONCURRENCY``,
  default 20) to ``Settings`` with a dynaconf validator; ``verify_search_results``
  resolves the cap lazily from settings when the caller doesn't override it.
- Enriches the news verifier TODO to call out that ``batch_size=-1`` is
  intentional — a numeric ceiling would silently break correctness because
  any item beyond the cap would be missing from ``present_ids`` and dropped.
- Updates ``Optional[TaskGroup]`` to ``TaskGroup | None`` per project style.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 20:45:56 +02:00
Chris CoutinhoandClaude Opus 4.7 c1368b9a7f refactor(webhooks): bound queue waits, route URLs through dynaconf
Addresses round-3 review feedback on PR #747:

- webhook_receiver: wrap send_stream.send() in anyio.fail_after(1.0)
  and return 503 with reason="queue full" if the queue is saturated.
  Avoids pinning the handler until NC's outbound timeout fires; the
  503 retry contract is the same as the existing "sync not running"
  branch.
- webhook_receiver: revise the compare_digest comment to match what
  the function actually guarantees — it avoids the per-character
  short-circuit of `==` but is not fully constant-time across length
  differences.
- _get_webhook_uri: read WEBHOOK_INTERNAL_URL and
  NEXTCLOUD_MCP_SERVER_URL via dynaconf so operators using
  settings.toml (rather than env vars) aren't silently routed into
  the docker/localhost fallback. Adds webhook_internal_url to
  Settings/_DEFAULTS/_field_map; nextcloud_mcp_server_url already
  existed. Docker-detection markers stay on os.getenv since they're
  container-runtime signals, not user-facing config.
- webhook_routes: sweep remaining f-string logger calls to lazy %s
  formatting per CLAUDE.md.
- client/webhooks: modernise full file's type hints to
  dict / list / | None per CLAUDE.md.

Tests:
- New test_returns_503_when_queue_is_full exercises the timeout
  branch with a saturated buffer and a shortened deadline.
- test_webhook_uri tests now patch get_settings (matching the
  auth-pair tests in the same file) instead of monkeypatching env
  vars directly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 04:17:00 +02:00
Chris CoutinhoandClaude Opus 4.7 224428fca5 fix(webhooks): authenticate deliveries via WEBHOOK_SECRET; review nits
Adds optional shared-secret authentication for /webhooks/nextcloud,
addressing the security follow-up flagged in #747.

Behavior:
- WEBHOOK_SECRET set: registrations pass authMethod="header" with
  authData={"Authorization": "Bearer <secret>"} (encrypted at-rest in
  Nextcloud's DB and forwarded on every delivery). The receiver
  validates the same header with hmac.compare_digest before parsing
  any payload; missing/invalid → 401.
- WEBHOOK_SECRET unset: registrations stay on authMethod="none" and
  the receiver accepts unauthenticated POSTs (logging a one-time
  startup warning). Backward compatible — operators can roll out at
  their own pace.

Implementation notes:
- WebhooksClient.create_webhook gains an `auth_data` parameter mapped
  to NC's `authData` body field; this is distinct from the existing
  `headers` parameter (`headers` is plaintext static request headers,
  `authData` is encrypted at-rest in NC and only emitted when
  authMethod="header"). The previous `auth_method="bearer"` mention in
  the docstring was incorrect — NC supports only "none" and "header".
- A small `webhook_auth_pair()` helper in auth/webhook_routes.py
  centralises the secret→(auth_method, auth_data) resolution so the
  preset flow and the Astrolabe-facing /api/v1/webhooks endpoint stay
  in sync.

Also addresses the smaller review points from #747:
- f-string → lazy %s formatting in webhook_receiver.py and
  webhook_routes.py.
- Move `int(time)` inside webhook_parser's try/except so a malformed
  `time` field returns None instead of raising ValueError.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 03:50:28 +02:00
Chris CoutinhoandClaude Opus 4.6 512de1f6b0 test: address PR #707 reviewer feedback on config path helpers
- _resolve_settings_files() now raises FileNotFoundError when
  NEXTCLOUD_MCP_SETTINGS_FILE points to a missing file, instead of
  silently falling back to defaults (footgun on typos).
- .secrets.toml is now looked for alongside the explicit settings file
  when NEXTCLOUD_MCP_SETTINGS_FILE is set, matching user expectation for
  /etc-style deployments. Unset behaviour (cwd lookup) is unchanged.
- get_token_db_path() drops the redundant os.environ.get() short-circuit;
  TOKEN_STORAGE_DB is already bound through dynaconf because the key is
  declared in _DEFAULTS.
- is_ephemeral_token_db() docstring documents the "must call
  get_token_db_path() first" precondition.
- alembic.ini comment clarifies the ./tokens.db placeholder is cwd-relative
  by design and points readers at the -x database_url escape hatch.
- New tests/unit/test_config_paths.py (12 tests) covering the ephemeral
  tempfile lifecycle, the TOKEN_STORAGE_DB override path, and all six
  _resolve_settings_files() cases including the two new behaviours.

Full unit suite now at 476 passed (464 + 12 new). Ruff + ty clean.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-14 21:14:42 +02:00
Chris CoutinhoandClaude Opus 4.6 146b622ebf fix: enable uvx/PyPI deployments without Docker assumptions
Two bugs made `uvx --from . nextcloud-mcp-server run` (and any pip install)
unusable outside Docker:

1. Dynaconf was configured with ignore_unknown_envvars=True and relied on
   settings.toml to declare the key schema. With no settings.toml in a wheel
   install, every env var (NEXTCLOUD_HOST, MCP_DEPLOYMENT_MODE, ...) was
   silently dropped. Moved the schema into a Python _DEFAULTS dict passed
   directly to Dynaconf, kept settings.toml as an optional external override
   (renamed to settings.toml.example, gitignored), and pointed docker-compose
   at the example file.

2. Token SQLite DB defaulted to /app/data/tokens.db in multiple places
   (auth/storage.py, migrations.py, alembic/env.py, cli.py db subcommands),
   which blew up at uvicorn startup with FileNotFoundError on non-Docker
   hosts. Replaced with a new config.get_token_db_path() helper that
   resolves TOKEN_STORAGE_DB if explicitly set, otherwise allocates a
   per-process tempfile cleaned up at interpreter exit via atexit — mirroring
   the "ephemeral by default" pattern used for QDRANT_LOCATION=:memory:.

Containers are unaffected: docker-compose services now explicitly set
TOKEN_STORAGE_DB=/app/data/tokens.db (the fourth service that was missing
this pin has been brought in line with the other three).

Verified end-to-end in an isolated /tmp venv: env-var-only startup, Alembic
migrations run against the tempfile, Application startup complete, /health/live
returns 200, tempfile deleted on SIGTERM. Unit tests (464) + ruff + ty pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-14 20:11:23 +02:00
Chris CoutinhoandClaude Opus 4.6 cc6ba65993 fix: address second round of PR review for scope prefix
- Use dynaconf (get_settings()) instead of os.getenv for OIDC_RESOURCE_SERVER_ID
- Re-add Settings field, _field_map entry, and settings.toml default
- Add trailing-slash guard (.rstrip("/")) to prevent double-slash in scopes
- Add double-prefixing guard: skip scopes already carrying the prefix
- Add @pytest.mark.unit to test module
- Add test for already-prefixed scopes
- Document OIDC_RESOURCE_SERVER_ID in docs/configuration.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 16:58:29 +02:00
Chris CoutinhoandClaude Opus 4.6 f67d4d1116 fix: address PR review for OIDC scope prefix feature
Add offline_access to OIDC standard scopes exclusion list to prevent it
from being incorrectly prefixed, which would break Cognito refresh token
flows. Extract scope transformation into testable _transform_scopes_for_idp()
helper, add debug logging for prefixed scopes, remove unused Settings field
(oauth_routes.py consistently uses os.getenv), and add unit tests.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 16:44:08 +02:00
Chris CoutinhoandClaude Opus 4.6 e21ddd91b9 feat: add OIDC resource server scope prefix for Cognito compatibility
When OIDC_RESOURCE_SERVER_ID is set, prefix resource scopes with the
identifier when forwarding to the IdP (e.g., calendar.read becomes
https://example.com/calendar.read). Required for IdPs like AWS Cognito
that mandate {resource_server_id}/{scope} format for custom scopes.
OIDC standard scopes (openid, profile, email) are forwarded as-is.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 16:33:47 +02:00
Chris CoutinhoandClaude Opus 4.6 b8b1616897 fix: resolve dynaconf settings.toml not found in non-editable installs
The root_path for dynaconf resolved to site-packages instead of the
application root when installed non-editable (Docker). This caused all
settings without env var overrides to be None, crashing on startup with
a TypeError in chunk size validation.

Fix root_path to fall back to CWD when settings.toml isn't at the
source-tree path, and refactor get_settings() to only pass values
dynaconf actually has — letting Settings dataclass defaults apply for
unconfigured keys. Mount settings.toml into all docker-compose MCP
services as a read-only volume.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 14:17:34 +02:00
Chris CoutinhoandClaude Opus 4.6 c8e4cbe825 feat: implement dynaconf configuration management (ADR-024 phases 1-3)
Replace ~80 manual os.getenv() calls in config.py with dynaconf-backed
configuration, enabling TOML file-based config alongside existing env
var support. Zero breaking changes — Settings dataclass interface and
all consumers unchanged.

Phase 1: Create settings.toml with all config keys and defaults,
.secrets.toml.example template, update .gitignore, initialize Dynaconf
instance with envvar_prefix=False and environment section switching.

Phase 2: Wire adapter — replace os.getenv() with _dynaconf.get() in
get_settings(), get_document_processor_config(), and deprecation/
dependency resolution helpers. Automatic type coercion eliminates ~30
manual int()/float()/.lower()=="true" patterns.

Phase 3: Add 12 declarative validators for port ranges, positive
integers, enum constraints, and float ranges. Remove redundant negative
overlap check from Settings.__post_init__.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 09:22:19 +02:00
Chris CoutinhoandClaude Opus 4.6 5730313574 refactor: remove RFC 8693 token exchange and Keycloak OAuth implementation
Nextcloud doesn't support OAuth bearer tokens without upstream patches,
making the RFC 8693 token exchange path untestable and dead code.

Removed:
- nextcloud_mcp_server/auth/token_exchange.py (597 lines)
- nextcloud_mcp_server/auth/keycloak_oauth.py (586 lines)
- OAUTH_TOKEN_EXCHANGE deployment mode from AuthMode enum
- get_session_client_from_context() from context_helper.py
- get_session_token() from token_broker.py
- enable_token_exchange / token_exchange_cache_ttl config fields
- oauth_token_exchange_total Prometheus metric
- Keycloak fixture block from tests/conftest.py (~408 lines)
- Token exchange unit tests from test_config_validators.py,
  test_unified_verifier.py, test_management_status_endpoint.py

Preserved:
- Multi-audience OAuth mode (OAUTH_SINGLE_AUDIENCE)
- Login Flow v2 provisioning with elicitation support
- Token broker background token management
- All existing test coverage for non-exchange paths

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-03 00:22:20 +02:00
Chris CoutinhoandClaude Opus 4.6 7956c3c061 refactor: remove Smithery deployment mode
Smithery is no longer a supported deployment mode. Remove all Smithery-specific
code paths, middleware, configuration, and tests. This simplifies the codebase
by eliminating DeploymentMode enum, SmitheryConfigMiddleware, session config
context variables, and the smithery_main entrypoint.

Files deleted: Dockerfile.smithery, smithery.yaml, smithery_main.py
ADR-016 retained with deprecated status for historical reference.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-22 20:15:47 +01:00
Chris CoutinhoandClaude Opus 4.6 f43343356e fix: address review feedback — security, caching, CI 429 retry
- Add 429 retry with exponential backoff to register_client() (fixes CI
  oauth matrix failures from parallel DCR requests)
- Make client_id, redirect_uri, and PKCE mandatory at token endpoint
- Add null-checks for discovery_url and OAuth credentials in proxy flows
- Add OIDC discovery document caching with 5-min TTL
- Add per-IP rate limiting on /oauth/register DCR proxy
- Discover DCR endpoint from OIDC discovery instead of hardcoding
- Extract extract_user_id_from_token to auth/token_utils.py (breaks
  circular imports between server/ and auth/ layers)
- Add TTL scope cache in scope_authorization.py (avoids DB hit per tool)
- Add defense-in-depth scope validation in storage layer
- Broaden elicitation exception handling with graceful fallback
- Add idempotentHint to nc_auth_check_status, return "pending" status
  after accepted elicitation, add polling interval to description
- Change ALL_SUPPORTED_SCOPES from tuple to frozenset for O(1) lookups
- Replace Optional[str] with str | None throughout config.py
- Use default_factory for ProxyCodeEntry/ASProxySession dataclasses
- Add proxy code/session cleanup to background loop
- Fix OIDC verification CI step to only run for oauth/login-flow modes
- Add unit tests for access.py REST endpoints (10 tests)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 17:22:23 +01:00
Chris CoutinhoandClaude Opus 4.6 db1e0606ad fix: address PR #589 review feedback (round 2)
Consolidate three independent RefreshTokenStorage lazy singletons into a
single lock-protected get_shared_storage() function, eliminating race
conditions on concurrent first-access. Remove blanket try/except in
_get_stored_scopes so storage errors propagate as proper MCP errors
instead of silently triggering "please provision" messages. Handle
declined/cancelled elicitation results in Login Flow tools by cleaning up
sessions and returning clear status. Add update_app_password_scopes() to
avoid unnecessary decrypt/re-encrypt when only scopes change. Add
unprovisioned-user early exit and no-op detection to nc_auth_update_scopes.
Remove four dead config fields and misleading NEXTCLOUD_PASSWORD deprecation
warning. Add periodic login flow session cleanup task. Generate separate
Fernet keys per service. Add board cleanup in deck integration test. Gate
CI unit tests on linting and skip Astrolabe build for single-user profile.
Fix test markers from oauth to multi_user_basic for astrolabe integration
tests. Update login_flow.py docstrings to document outbound HTTP calls.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-01 16:35:31 +01:00
Chris CoutinhoandClaude Opus 4.6 8b5c2395b5 feat: add Docker Compose profiles and Login Flow v2 service
Add selective service startup via Docker Compose profiles so each MCP
deployment mode runs independently. Also add the new mcp-login-flow
service (port 8004) for Login Flow v2 authentication (ADR-022).

Profile assignments:
- single-user: mcp (port 8000)
- multi-user-basic: mcp-multi-user-basic (port 8003)
- oauth: mcp-oauth (port 8001)
- keycloak: keycloak + mcp-keycloak (port 8002)
- login-flow: mcp-login-flow (port 8004)

Infrastructure services (db, redis, app, recipes) always start.

Integration tests cover the full Login Flow v2 provisioning flow:
OAuth → browser login → app password → Nextcloud API access for
notes, calendar, contacts, files, deck, and cookbook operations.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-27 20:33:54 +01:00
Chris CoutinhoandClaude Opus 4.6 a11ae9c027 refactor: enforce PLC0415 (import-outside-top-level) for source code
Enable ruff PLC0415 rule for all source files (tests excluded via
per-file-ignores). Move 136 inline imports to top-level across 33 files.
8 imports suppressed with noqa for legitimate reasons: circular
dependencies (client/__init__.py, context.py), optional dependency
guards (app.py document processors, auth/userinfo_routes.py), and
post-env-setup imports (smithery_main.py).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-20 08:04:50 +01:00
Chris CoutinhoandClaude Opus 4.6 1a4486a388 fix: convert CA bundle path to ssl.SSLContext to avoid httpx deprecation warning
httpx emits a DeprecationWarning when verify=<str> is passed, recommending
ssl.SSLContext instead. This affected both our httpx client factories and
the caldav library passthrough.

Changed get_nextcloud_ssl_verify() to return bool | ssl.SSLContext instead
of bool | str by constructing an SSLContext when NEXTCLOUD_CA_BUNDLE is set.
All downstream consumers (httpx, caldav) natively accept ssl.SSLContext.

Also fixed app password endpoint tests that used overly broad MagicMock
(auto-generated truthy nextcloud_ca_bundle attribute).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-16 13:27:22 +01:00
Chris CoutinhoandClaude Opus 4.6 1707b2e6e1 feat: add self-signed SSL certificate support for Nextcloud connections
Add NEXTCLOUD_VERIFY_SSL and NEXTCLOUD_CA_BUNDLE env vars to configure
TLS certificate verification for all outbound Nextcloud connections.
Centralizes SSL config via a new HTTP client factory (http.py) used by
all 27 Nextcloud-bound call sites, including API clients, OIDC endpoints,
OAuth flows, and health checks.

Closes #560

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-16 09:21:21 +01:00
Chris Coutinho 056414752e fix(mcp): Move all imports to the top of modules 2025-12-26 10:05:27 -06:00