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Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. 📝 SummarySummary by CodeRabbit
WalkthroughThe change introduces a shared Sequence Diagram(s)sequenceDiagram
participant AuthOrPostgREST
participant HTTPClient
participant RetryRequestInterceptor
participant Middleware
participant Transport
AuthOrPostgREST->>HTTPClient: send request
HTTPClient->>RetryRequestInterceptor: execute retry policy
RetryRequestInterceptor->>Middleware: run middleware chain
Middleware->>Transport: send attempt
Transport-->>RetryRequestInterceptor: response or transient failure
RetryRequestInterceptor->>RetryRequestInterceptor: wait with backoff or Retry-After
RetryRequestInterceptor->>Middleware: run next attempt
Priority: ➖ Normal Change: Feature Merge Risk: ⚪ Minimal · up to No concrete current-head defect remains; the PR is mergeable after normal checks. Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
Coverage Report for CI Build 35125672792Coverage increased (+0.002%) to 88.495%Details
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This was referenced Sep 15, 2026
grdsdev
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In `@Sources/Helpers/HTTP/RetryPolicy.swift`:
- Line 97: Update the expired-date handling in delay(retry:retryAfter:) so a
Retry-After HTTP-date that is not in the future returns nil instead of a
zero-second duration, allowing backoffDelay(retry:) with jitter to handle the
retry. Preserve future-date behavior and update the past-date test to verify the
default backoff fallback.
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Sources/Auth/Internal/APIClient.swiftSources/Helpers/HTTP/HTTPClientConfiguration.swiftSources/Helpers/HTTP/HTTPFields.swiftSources/Helpers/HTTP/RetryPolicy.swiftSources/Helpers/HTTP/RetryRequestInterceptor.swiftSources/PostgREST/Legacy/PostgrestClient.swiftSources/PostgREST/Legacy/PostgrestRequestBuilder.swiftSources/RealtimeV2/ConnectionManager.swiftSources/RealtimeV2/RealtimeClientV2.swiftSources/RealtimeV2/Types.swiftSources/Supabase/Types.swiftTests/AuthTests/APIClientTests.swiftTests/HelpersTests/HTTPClientTests.swiftTests/HelpersTests/RetryPolicyTests.swiftTests/HelpersTests/RetryRequestInterceptorTests.swiftTests/PostgRESTTests/PostgrestBuilderTests.swiftTests/RealtimeTests/ConnectionManagerTests.swiftTests/RealtimeTests/RealtimeTests.swiftV3_MIGRATION.mddictionary.txtsdk-compliance.yaml
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…orage and Functions Auth, PostgREST, Storage and Functions now retry through a single middleware driven by a `RetryPolicy` value: full-jitter capped exponential backoff, `Retry-After` honoured up to the cap, idempotent methods only unless an `Idempotency-Key` header is present, stop on cancellation. The retry rule is per target. PostgREST keeps its fixed postgrest-js rule (GET/HEAD, 503/520, 4 attempts) and only its on/off switch is public; its private loop is deleted. Storage and Functions gain retries for the first time, with a public, configurable `retryPolicy`. Auth keeps retrying POST so token refreshes are replayed. The Realtime reconnect delay carries the same full jitter. BREAKING CHANGE: retry timing changes for every module (jitter instead of a fixed schedule; Auth makes 3 attempts instead of 2), Storage and Functions start retrying transient failures by default, and only `URLError` counts as a retryable transport failure. See V3_MIGRATION.md. Fixes SDK-1791 Co-Authored-By: Claude <noreply@anthropic.com>
Retry now runs outermost so every attempt re-runs the caller's middlewares and resolves a fresh access token. A cancelled task surfaces as CancellationError even when the transport reports URLError.cancelled. Only the curated set of transient URLError codes is retried again. Backoff uses equal jitter (cap/2...cap) and caps before multiplying so a huge base cannot overflow Duration; Realtime clamps reconnectDelay so a non-finite value cannot trap. The Idempotency-Key escape hatch is removed. Storage and Functions no longer gain retries in this PR: deciding which of their requests are safe to replay is a separate task, so RetryPolicy is package-scoped and only Auth and PostgREST use it. Co-Authored-By: Claude <noreply@anthropic.com>
…le date A `Retry-After` HTTP-date that has already passed used to yield a zero wait, so every client that saw it replayed at the same instant — the thundering herd the jitter exists to prevent. A date that is not in the future now parses as `nil` and the jittered backoff applies. Future dates and delta-seconds are unchanged. Co-Authored-By: Claude <noreply@anthropic.com>
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…91-unify-retry-policy-jittered-backoff-retry-after-one # Conflicts: # V3_MIGRATION.md # dictionary.txt
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Auth and PostgREST — the two modules that already retried — now do so through a single middleware driven by a package-scoped
RetryPolicyvalue: equal-jitter capped exponential backoff (cap/2...cap),Retry-Afterhonoured up to the cap, a fixed set of retryable methods and statuses, a curated allowlist of transientURLErrorcodes, and an immediate stop on cancellation. Every retry carriesX-Retry-Count: n.The retry middleware runs outermost, ahead of the caller's middlewares and the SDK's own, so every attempt re-runs the whole chain and a replayed request carries a freshly resolved access token. A cancelled task always surfaces as
CancellationError, even when the transport reportsURLError.cancelled.The retry rule is per target. PostgREST keeps its fixed postgrest-js rule (GET/HEAD, 503/520, 4 attempts) and only its on/off switch stays public; its private loop is deleted. Auth keeps retrying POST, PUT and DELETE so token refreshes are replayed, and still does not retry 429. The Realtime reconnect delay reuses the same jitter math and clamps
reconnectDelayso a non-finite value cannot trap.Storage and Functions are unchanged: they do not retry. Deciding which of their requests are safe to replay is a separate task, which is why
RetryPolicyispackagerather than public.Breaking (behavior only, compiles silently): retry timing changes for Auth, PostgREST and Realtime; Auth makes 3 attempts instead of 2; PostgREST retries only transient
URLErrors instead of any error; customClientMiddlewares run once per attempt; a cancelled request throwsCancellationError. See the new section in V3_MIGRATION.md.Review first:
Sources/Helpers/HTTP/RetryPolicy.swift(the delay math andRetry-Afterparsing),Sources/Helpers/HTTP/RetryRequestInterceptor.swift(what is retried) andHTTPClient.init(configuration:retrying:appending:)inHTTPClientConfiguration.swift(middleware order). Everything else is wiring.Test evidence
The known issue is pre-existing. New tests:
RetryPolicyTests(jitter bounds, cap, overflow with a huge base,Retry-Afterdelta-seconds / HTTP-date / garbage), a rewrittenRetryRequestInterceptorTests(statuses, methods, deterministic vs transientURLErrors, attempts, cancellation includingURLError.cancelled→CancellationError, bodies, delays,X-Retry-Count),HTTPClientTests.retryRunsOutsideTheCallersMiddlewares,APIClientTests.rateLimitedRequestIsNotRetriedfor Auth,ConnectionManagerTests.reconnectBackoffClampsAnUnusableBaseDelay, and a PostgREST test pinning that a 500 on GET is never retried.Note for CI: SwiftPM's incremental build once kept stale default-argument values for
RetryPolicy.init; a clean build (rm -rf .build) fixed it locally.A companion spec draft for
database.configuration.auto_retryis written locally insupabase/sdkand will follow as a separate PR.Fixes SDK-1791