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feat(admin): account for peer on-demand requests - #1059
This PR adds per-peer accounting for on-demand peering traffic.
Records REQ, COUNT, and NEG-OPEN requests per authenticated peer pubkey, plus the number of events served for REQ. Counters are stored in Redis and are best-effort, so accounting failures never affect the request path.
The admin console’s Peering table now shows Requests and Events served per peer, and diagnostics exports include the same counters.
Related Issue
Follow-up to #936 and the on-demand request limits PR.
Motivation and Context
How Has This Been Tested?
Screenshots (if appropriate):
Types of changes
Non-functional change (docs, style, minor refactor)
Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)
Breaking change (fix or feature that would cause existing functionality to change)
Checklist:
My code follows the code style of this project.
My change requires a change to the documentation.
I have updated the documentation accordingly.
I have read the CONTRIBUTING document.
I have added tests to cover my code changes.
I added a changeset, or this is docs-only and I added an empty changeset.
All new and existing tests passed.
Summary by CodeRabbit
New Features
Peering statistics track accepted REQ, COUNT, and NEG-OPEN requests, along with events served, for each authenticated peer.
The admin Peering table displays request and event counts alongside peer status.
Admin diagnostics exports include per-peer peering statistics.
Bug Fixes
Statistics recording is best-effort, so storage failures do not interrupt requests or event delivery.
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Walkthrough
The change adds Redis-backed per-peer counts for eligible on-demand requests and events served. The admin Peering table and diagnostics export expose these statistics.
Changes: Peer request accounting
Layer / File(s)
Summary
Redis statistics store src/utils/peering-request-stats.ts, test/unit/utils/peering-request-stats.spec.ts
A Redis-backed store tracks request counts, served-event counts, and last-request details by normalized peer pubkey. Records expire after seven days. Storage failures are logged and suppressed.
Record peer requests and served events src/handlers/*-message-handler.ts, src/adapters/web-socket-adapter.ts, src/factories/*, test/unit/handlers/*-message-handler.spec.ts, test/unit/adapters/web-socket-adapter.spec.ts
The handlers record eligible peer REQ, COUNT, and NEG-OPEN requests. The REQ handler and WebSocket adapter record events served. Factories share the statistics store with the handlers and adapter.
Expose statistics in admin views and diagnostics src/utils/admin-peering.ts, src/controllers/admin/get-admin-peering-controller.ts, src/factories/controllers/get-admin-peering-controller-factory.ts, src/utils/admin-diagnostics-export.ts, resources/admin/*, test/unit/controllers/admin/get-admin-peering-controller.spec.ts, test/unit/utils/admin-peering.spec.ts, docs/PEERING.md, .changeset/peering-request-admin.md
The admin Peering response attaches statistics to peer rows. The table displays request and served-event counts, and diagnostics exports include the statistics. Documentation and the changeset describe the accounting.
sequenceDiagram
participant Peer as Authenticated peer
participant Handler as Request handler
participant Store as PeeringRequestStatsStore
participant Redis
Peer->>Handler: Send eligible REQ, COUNT, or NEG-OPEN
Handler->>Store: recordRequest(pubkey, type)
Store->>Redis: Persist request statistics
Handler->>Store: addEventsServed(pubkey, served count)
Store->>Redis: Persist served-event count
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Possibly related issues
cameri/nostream#939: The change adds per-peer served-event counts to the admin Peering table and diagnostics export.
cameri/nostream#936: The change records per-peer on-demand requests and events served.
cameri/nostream#931: The change adds accounting for on-demand requests and served events.
Possibly related PRs
cameri/nostream#1043: This change extends the admin Peering rows and table introduced in that PR with request statistics.
cameri/nostream#1053: This change records peer request types after their rate-limit checks.
Merge Risk: Minimal · up to 86b3c
The change adds best-effort per-peer request and served-event counters to the admin Peering view and diagnostics export. Slow or failing Redis writes no longer let accounting work pile up during an active peer feed, and accounting failures do not affect request handling. No actionable merge-blocking risk remains.
Security architecture risk: Low · up to 00ace
Accounting uses existing authenticated peer identities, and its outputs remain behind existing admin access controls. No new authorization bypass was established. Remaining uncertainty concerns Redis stalls, recovery behavior, and deployment-specific resource limits.
Retained concerns
No architecture-level concerns identified.
Security review details
Security Blast Radius
inferred — Observed network callers attribute activity to authenticated, enabled configured peers rather than arbitrary client-supplied identities. A permitted peer can influence its relay-local counters and accounting workload, but additional sockets and repeated requests for the same identity coalesce in the producer singleton. Cross-peer counter ownership or additional service authority was not established.
Trust Boundaries and Controls
observed — Existing peer admission verifies AUTH identity and checks the operator-configured peer list; getPeerPubkey rechecks authentication and current configuration. Existing peering and diagnostics routes retain admin authentication and rate limiting. The dashboard escapes the new counter values before HTML rendering.
Resilience and Maintainability Implications
inferred — A non-settling Redis write can retain the active flush and defer later persistence. The store limits write concurrency, not pending identity cardinality. Configured-peer admission and per-identity coalescing materially constrain the observed attack path, so these omissions are not retained as a demonstrated resource-exhaustion vulnerability; outage recovery remains uncertain.
Hardening Proposals
proposed — Consider an explicit accounting outage policy covering operation deadlines, pending-identity capacity, and intentional delta dropping. Keep these statistics advisory rather than using their completeness as an authorization, quota, or audit guarantee.
Pre-merge checks: 5
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Title check
The title clearly describes the main change: accounting for peer on-demand requests.
Docstring Coverage
No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…
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No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 0 functions across 19 files. (1 skipped: 1 unsupported.)
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A rabbit counts each peer request, And notes the events sent on their quest. Redis keeps the totals neat, The admin table makes them greet. Best-effort counts hop along, While requests continue strong.
Recent review info
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[Medium impact] The PR appears safe to merge; no new actionable issues were found.
Summary
Adds per-peer request and event counts to the admin console and diagnostics exports.
Peer requests and sent events now build per-peer totals.
The Peering table and diagnostics show peer traffic totals.
The earlier concerns about live deliveries, expired entries, the cleanup race, and pending accounting writes are addressed.
Diagram
%%{init: {'theme': 'neutral'}}%%
flowchart LR
A[Authenticated peer request] --> B[Add request count]
C[Outgoing EVENT frame] --> D[Add event count]
B --> E[Combine counts per peer]
D --> E
E --> F[Write batches to Redis]
F --> G[Admin Peering table]
F --> H[Diagnostics export]
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Coverage: 77.572%
Details
Patch coverage: 9 uncovered changes across 2 files (117 of 126 lines covered, 92.86%).
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Inline comments:
Review comments at @src/handlers/subscribe-message-handler.ts:
- Around line 302-305: Update the event delivery accounting around the
`peerPubkey` and `served` logic so outbound peer `EVENT` messages from live
subscriptions and NIP-43 `REQ` responses are counted, while stored events sent
through `fetchAndSend()` are not counted twice; keep the existing
`addEventsServed` aggregation for the final count.
Review comments at @src/utils/peering-request-stats.ts:
- Around line 29-30: Update list() in the peering request statistics flow to
remove index members whose peer hashes no longer exist, so subsequent reads do
not repeatedly query expired peers. Preserve active peers and the existing index
behavior; use the hash-existence result from the read path to identify stale
members.
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Inline comments:
Review comments at @src/utils/peering-request-stats.ts:
- Line 80: Update the `list()` method’s `getSetMembers` index read to catch read
failures and use an empty statistics list instead, allowing peer rows to be
returned when the peering state read succeeds.
- Line 91: Update REMOVE_INDEX_MEMBER_SCRIPT and its this.cache.eval invocation
in list() to check that the corresponding hash is still absent before removing
pubkey from PEERING_REQUEST_STATS_INDEX_KEY, with the existence check and
removal performed atomically in Redis. Preserve the index member if the hash has
been recreated.
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Inline comments:
Review comments at @src/utils/peering-request-stats.ts:
- Line 122: Bound concurrent writes in the accounting record flow around
this.cache.eval: track in-flight accounting writes and drop excess statistics,
or batch increments, so pending Redis operations cannot grow unbounded. Preserve
best-effort behavior without making WebSocketAdapter.sendMessage wait for
accounting writes.
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resources/admin/dashboard.html
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Description
This PR adds per-peer accounting for on-demand peering traffic.
Records
REQ,COUNT, andNEG-OPENrequests per authenticated peer pubkey, plus the number of events served forREQ. Counters are stored in Redis and are best-effort, so accounting failures never affect the request path.The admin console’s Peering table now shows Requests and Events served per peer, and diagnostics exports include the same counters.
Related Issue
Follow-up to #936 and the on-demand request limits PR.
Motivation and Context
How Has This Been Tested?
Screenshots (if appropriate):
Types of changes
Checklist:
Summary by CodeRabbit
REQ,COUNT, andNEG-OPENrequests, along with events served, for each authenticated peer.