feat(llc)!: adopt the stream_core error layer and upload task API - #126
feat(llc)!: adopt the stream_core error layer and upload task API#126xsahil03x wants to merge 24 commits into
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Two core changes land together, because the upload rework is stacked on the error layer and needs its exception types. **Errors.** Every failure now arrives as a `StreamException` subclass, so `ClientException`, `HttpClientException` and `StreamApiError` are gone. The API seams adopt `runApiSafely`, which classifies a transport failure at the point it happens rather than leaving a raw `StreamDioException` for callers to unwrap — `capabilities_repository` reads a status code off `StreamApiException` directly instead of digging through two layers. `connect` now throws a `StateError` when it is asked for a connection it already has, keeping exceptions for failures. **Uploads.** `processRequestsBatch` uploads every request's attachments as one batch instead of one batch per request, so `maxConcurrent` bounds the uploads across the whole call. Previously N requests meant N concurrency limits and a failure in one left the others uploading work about to be discarded. `processRequest` is now the single-request case of the same path. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe SDK adopts typed ChangesStream Feeds behavior
Estimated code review effort: 3 (Moderate) | ~30 minutes Merge Risk: 🟡 Moderate · up to Shared attachment uploads can create remote files that remain unowned if a batch partially fails, and the PR currently depends on an unreleased stream_core revision; merge should wait for the released dependency and explicit acceptance or mitigation of partial-upload cleanup. The breaking-change changelog entry also still needs the required prefix. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant Activity.addCommentsBatch
participant StreamAttachmentUploader
participant CdnClient
Activity.addCommentsBatch->>StreamAttachmentUploader: processRequestsBatch
StreamAttachmentUploader->>CdnClient: upload attachments with shared concurrency
CdnClient-->>StreamAttachmentUploader: upload results or failure
StreamAttachmentUploader-->>Activity.addCommentsBatch: requests with merged attachments
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Description checkExplanation The description is detailed, on-topic, and documents the dependency pin, breaking changes, upload behavior, generator follow-up, and verification results. It omits the template's completed CLA checkboxes and a valid internal ticket value. Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (5 skipped: 5 unsupported.) ✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@packages/stream_feeds/lib/src/client/feeds_client_impl.dart`:
- Around line 266-268: Update the StreamAuthenticationException throw in the
token-refresh failure path so that when previousError.isTokenExpired and
_tokenManager.usesStaticProvider are true, it passes previousError as the cause
and previousError.stackTrace as the stackTrace, preserving the original
StreamApiException details.
In `@packages/stream_feeds/lib/src/feeds_client.dart`:
- Around line 52-56: Revise the documentation around the StreamFeedsException
typedef in packages/stream_feeds/lib/src/feeds_client.dart, lines 52-56, to
scope it to typed SDK operation failures rather than every SDK failure. Update
the breaking-change statement in packages/stream_feeds/CHANGELOG.md, line 10, to
apply only to failures represented by StreamException subclasses; retain the
existing StateError connect contract.
In `@packages/stream_feeds/pubspec.yaml`:
- Line 44: Do not edit the dependency ref directly in the package manifest;
update the corresponding dependency configuration in melos.yaml, then run melos
bootstrap to regenerate aligned pubspec.yaml files.
In `@packages/stream_feeds/test/state/feed_test.dart`:
- Line 4993: Register an addTearDown callback for the temporary directory
created by createTempSync in the attachment test, removing that directory
recursively after each test while preserving the existing file-path
construction.
In `@packages/stream_feeds/test/utils/uploader_test.dart`:
- Around line 4-5: Move the attachment upload tests away from direct
StreamAttachmentUploader and generated api imports, and exercise uploads through
the public FeedsClient, Feed, or Activity workflows exposed by
stream_feeds.dart. Preserve assertions for request behavior, ordering, duplicate
IDs, and concurrency using only outcomes observable through the consuming-app
API.
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melos.yamlpackages/stream_feeds/CHANGELOG.mdpackages/stream_feeds/lib/src/cdn/cdn_api.dartpackages/stream_feeds/lib/src/client/feeds_client_impl.dartpackages/stream_feeds/lib/src/feeds_client.dartpackages/stream_feeds/lib/src/repository/capabilities_repository.dartpackages/stream_feeds/lib/src/state/activity.dartpackages/stream_feeds/lib/src/state/feed.dartpackages/stream_feeds/lib/src/utils/uploader.dartpackages/stream_feeds/pubspec.yamlpackages/stream_feeds/test/client/feeds_client_test.dartpackages/stream_feeds/test/state/feed_test.dartpackages/stream_feeds/test/utils/uploader_test.dart
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| import 'package:stream_feeds/src/generated/api/models.dart' as api; | ||
| import 'package:stream_feeds/src/utils/uploader.dart'; |
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📐 Maintainability & Code Quality | 🟠 Major | 🏗️ Heavy lift
Test attachment uploads through the public SDK surface.
These imports access lib/src and the tests instantiate StreamAttachmentUploader directly. Move this coverage to public FeedsClient, Feed, or Activity workflows. Keep request, ordering, duplicate-ID, and concurrency assertions observable through the consuming-app API.
As per coding guidelines, “Only import from lib/stream_feeds.dart as the public API” and “All tests must be written from the perspective of a consuming app.”
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In `@packages/stream_feeds/test/utils/uploader_test.dart` around lines 4 - 5, Move
the attachment upload tests away from direct StreamAttachmentUploader and
generated api imports, and exercise uploads through the public FeedsClient,
Feed, or Activity workflows exposed by stream_feeds.dart. Preserve assertions
for request behavior, ordering, duplicate IDs, and concurrency using only
outcomes observable through the consuming-app API.
Source: Coding guidelines
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Agreed in principle — this repo does hold tests to the public surface, and the person who owns it has said the same. Leaving the decision to them rather than acting on it, with the trade-off stated:
The extension under test is not exported. HasAttachmentsExtension lives in lib/src/utils/uploader.dart and appears in no barrel, so there is no public route to processRequestsBatch other than through Feed.addActivity / Activity.addComment, which is exactly what the coverage added to test/state/feed_test.dart in this PR does — including the shared-concurrency behaviour that motivated the change.
So the public-surface coverage already exists; this file is a unit test of internal plumbing. What it holds that the public path cannot easily reach is the duplicate-id ArgumentError and the exact fold ordering across several requests, both of which would become indirect and fragile expressed through a repository.
Two honest options: delete this file and accept the loss of those two assertions, or keep it and treat the lib/src import as the deliberate exception it is. Rewriting it to reach the same precision publicly is the heavy lift you flagged, and I do not think it buys much.
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#!/bin/bash
set -euo pipefail
printf '%s\n' '== Public library exports and uploader symbols =='
ast-grep outline packages/stream_feeds/lib/stream_feeds.dart --items all --view expanded || true
ast-grep outline packages/stream_feeds/lib/src/utils/uploader.dart --items all --view expanded || true
printf '%s\n' '== Internal uploader test imports and relevant assertions =='
sed -n '1,360p' packages/stream_feeds/test/utils/uploader_test.dart
printf '%s\n' '== Public feed/activity attachment-upload coverage =='
rg -n -C 4 --type dart \
'(Attachment uploads|addActivity|addComment|addCommentsBatch|maxConcurrent|concurren|attachmentUploads)' \
packages/stream_feeds/test/state/feed_test.dartLength of output: 35234
@xsahil03x, the results confirm that test/state/feed_test.dart covers the public workflows for upload success, request merging, endpoint routing, and upload failures.
The results also confirm that test/utils/uploader_test.dart directly imports lib/src modules and instantiates StreamAttachmentUploader. It tests internal invariants, including duplicate IDs and request ordering.
Your trade-off is reasonable. However, the stated test guideline does not define an exception for internal plumbing tests. The public tests shown also do not include the shared-concurrency assertion.
I will keep the finding open for the repository owner to decide whether to delete the internal tests or explicitly accept this narrow exception.
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Picks up the review fixes on GetStream/stream-core-flutter#170, including `UploadProgress.totalBytes` becoming nullable. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The pinned commit stops re-exporting `dart:typed_data` from the core barrel, which is where `uploader_test` was reaching `Uint8List`. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`upload` hands back a running `AttachmentUploadTask` rather than a future, so the snippet no longer awaits it, drops the `onProgress` callback that went with the old signature, and reads progress off the task's state instead. Progress is shown the way the API asks for: the fraction is absent until the file's length is known. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #126 +/- ##
==========================================
+ Coverage 86.28% 88.62% +2.34%
==========================================
Files 129 129
Lines 4541 4538 -3
==========================================
+ Hits 3918 4022 +104
+ Misses 623 516 -107 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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The exception raised when a static provider's token is refused dropped the refusal itself — the `StreamApiException` that ended the session was right there and went nowhere. It is the `cause` now, with its stack. `StreamFeedsException` was documented as the root of *every* failure the SDK reports, two lines above a `connect` that throws `StateError` for being called twice. Both it and the changelog entry now say what they mean: failures for work the SDK attempted. Asking for something it cannot be asked stays a programming error. The upload test helper left a directory in the system temp folder per attachment, on every run. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Inline comments:
In `@docs/code_snippets/03_03_file_uploads.dart`:
- Line 37: Update the upload flow around task.result to inspect the Result
before invoking getOrThrow(); handle the failure branch without creating an
Attachment, and construct Attachment only from the successful value using fold
or switch.
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`addActivity`, `addComment` and `addCommentsBatch` return a `Result`, which reads as a promise not to throw, and then throw an `ArgumentError` when two attachments in one upload share an id. That is the right behaviour — misuse is not a condition to handle, so it stays out of the `Result` — but nothing said it happens. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The `StateError` paragraph restated what `connect` already documents at the point a caller meets it, so it earned nothing here. What the review was right about was one word: "every failure" claimed more than the alias covers. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
It said the outcome never throws, one line above a `getOrThrow()` that rethrows the carried error. The comment now says what `getOrThrow` is for — opting into a throw — and points at `fold` for handling it instead. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
0.5.1 had no already-established guard on `connect`, so code that called it twice went on to try again; it now throws a `StateError`. That breaks callers, and the policy reserves `🔄 Changed` for what does not. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`stream_core` re-exports `Uint8List` once more, so the explicit import here is redundant and the analyzer says so. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Inline comments:
In `@packages/stream_feeds/CHANGELOG.md`:
- Around line 10-11: Update both changelog bullets describing the
StreamException replacement and connect behavior to begin with the required
[BREAKING] prefix, preserving the existing descriptions.
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docs/code_snippets/03_03_file_uploads.dartmelos.yamlpackages/stream_feeds/CHANGELOG.mdpackages/stream_feeds/lib/src/client/feeds_client_impl.dartpackages/stream_feeds/lib/src/feeds_client.dartpackages/stream_feeds/lib/src/state/activity.dartpackages/stream_feeds/lib/src/state/feed.dartpackages/stream_feeds/pubspec.yamlpackages/stream_feeds/test/state/feed_test.dartpackages/stream_feeds/test/utils/uploader_test.dart
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| - Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four | ||
| - `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails |
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
Add the required [BREAKING] prefix.
These two bullets describe breaking changes, but neither uses the required [BREAKING] prefix. Add the prefix to both entries so the changelog follows the repository format.
Suggested fix
-- Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four
-- `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails
+- [BREAKING] Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four
+- [BREAKING] `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| - Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four | |
| - `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails | |
| - [BREAKING] Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four | |
| - [BREAKING] `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails |
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In `@packages/stream_feeds/CHANGELOG.md` around lines 10 - 11, Update both
changelog bullets describing the StreamException replacement and connect
behavior to begin with the required [BREAKING] prefix, preserving the existing
descriptions.
Source: Coding guidelines
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Not applicable — the prefix belongs to the format this changelog moved off.
All 8 [BREAKING] entries in this file sit in released sections 0.2.0 through 0.5.0, which used the flat layout: ## Upcoming with bare bullets and no sub-headings, where a prefix was the only way to mark a break. ## Upcoming now uses the sectioned layout — ### 💥 BREAKING CHANGES, ### ✨ Features, ### 🐛 Bug Fixes, ### 🔄 Changed — matching stream_core. Under an explicit ### 💥 BREAKING CHANGES heading the prefix restates the heading.
Worth noting the two bullets flagged here are not outliers: none of the 7 bullets in that section use the prefix, so applying it to two would be the inconsistency.
The real issue is that .github/copilot-instructions.md still documents the old flat format, prefix and all, which is presumably where this finding comes from. That file is stale rather than the changelog being wrong — it should be updated to the sectioned layout so this stops being raised.
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printf '%s\n' '--- Current Upcoming headings and breaking bullets ---'
sed -n '1,55p' packages/stream_feeds/CHANGELOG.mdLength of output: 12332
@xsahil03x, the current packages/stream_feeds/CHANGELOG.md layout supports your consistency point. The two entries match the other unprefixed entries under ### 💥 BREAKING CHANGES.
However, .github/copilot-instructions.md still explicitly requires [BREAKING] at Lines 166-177. The applicable repository guidance also requires that prefix. I cannot withdraw the finding while that requirement remains active.
Updating .github/copilot-instructions.md to define the sectioned layout would remove this conflict. After that change, entries under ### 💥 BREAKING CHANGES should not require an additional [BREAKING] prefix.
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The predicate only retried a `StreamApiException`, so a request that never reached the server — a timeout or an offline blip, which arrives as `StreamNetworkException` — was dropped on the first attempt. That is the likeliest failure for a mobile client and the one `ERROR_LAYER.md`'s retry table names for a read. Rate limits stay out, and the backend is why: `/feeds/own/batch` sits on the tighter limit tier and its 429 carries no `Retry-After`, so a fixed 500 ms retry would spend the budget rather than wait out the limit. Nothing covered this path before — no test in the package touched `ownBatch`. The new one drives it the way a consumer does, through an activity event naming an uncached feed, and fails on the old behaviour with 1 call instead of 2. `createDefaultActivityResponse` gained a `currentFeed` parameter to make that reachable. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Inline comments:
In `@packages/stream_feeds/test/state/feed_test.dart`:
- Line 680: Update the retry test’s ownBatch stubbing and verification to
construct and reuse the exact expected OwnBatchRequest for the event, replacing
any(named: 'ownBatchRequest') in both the failure stub and verification so the
requested feed capabilities are validated.
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Approving. The error layer is a real simplification — capabilities_repository losing two levels of unwrapping is the proof — and sharing one batch across a request list fixes an actual N×maxConcurrent bug in addCommentsBatch. Nothing below blocks the merge.
One finding I couldn't anchor inline, since the files aren't in the diff: four dartdoc examples in stream_feeds_test still tell people to expect a ClientException, which this PR removes — base_tester.dart lines 110 and 125, websocket_tester.dart lines 93 and 140. That's a published package, so the examples ship as-is.
On the hand-applied runApiSafely in default_api.dart: I know GetStream/chat#16408 carries the generator fix and that the merge ordering is understood. Worth linking it from this PR's description all the same, so the dependency is visible from the blocked side.
| - Every failure the SDK reports for work it attempted now arrives as a `StreamException` subclass — `StreamApiException`, `StreamNetworkException`, `StreamAuthenticationException` or `StreamClientException` — replacing `ClientException`, `HttpClientException` and `StreamApiError`. `StreamFeedsException` aliases the base type, so one `on` clause catches all four | ||
| - `connect` throws a `StateError` when a connection is already established or in progress, and a `StreamFeedsException` carrying the cause when it fails |
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Three things to reconcile here.
StreamApiError hasn't gone anywhere. It's still exported from src/generated/api/models.dart:5 and it's still the type of ConnectionErrorEvent.error in src/ws/events/events.dart:144. It's no longer what the SDK throws or returns, which is the accurate claim — as written, someone matching on connection.error will go looking for a replacement that doesn't exist.
Two breaking changes are missing.
StreamAttachmentUploader.upload went from Future<Result<UploadedAttachment>> upload(attachment, {onProgress}) to AttachmentUploadTask upload(attachment), and uploadBatch from Stream<Result<...>> to AttachmentUploadBatch. That's public API here: StreamFeedsClient.attachmentUploader exposes it and stream_feeds.dart re-exports all of stream_core. The rewrite of docs/code_snippets/03_03_file_uploads.dart in this same PR is the demonstration that it breaks calling code. Only the batching behaviour made it into Changed.
Feed.addActivity, Feed.addComment and Activity.addCommentsBatch can now throw ArgumentError on duplicate attachment ids, where they previously returned a Result. The dartdoc says so, but a caller who wrapped these in fold and never expected a throw won't get a compile error out of it — it surfaces as a crash.
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All three reconciled in 3f787f9.
StreamApiError now reads as what it is: still the server's error payload and still ConnectionErrorEvent.error, no longer what the SDK throws or returns.
Both missing breaking changes added. I checked the uploader one is release-relative before writing it — attachmentUploader was public at v0.5.1 against stream_core: ^0.4.0, so the signature change is real for anyone upgrading. And the ArgumentError entry says explicitly that it replaces a Result, since that is the part no compiler will point out.
| StreamNetworkException(isCancelled: true) => false, | ||
| StreamNetworkException() => true, | ||
| // A rate limit is not retried here: this waits a fixed moment, which is | ||
| // not the wait a rate limit asks for. | ||
| StreamApiException(:final statusCode) => statusCode < 100 || statusCode >= 500, | ||
| _ => false, |
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The rewrite added two decisions that weren't here before — a cancelled network error doesn't retry, and neither does a 4xx — and only the "network error does retry" case got a test. Both are cheap to pin down, and the cancelled one especially: if that branch ever regressed, the retry would fire against a request that was deliberately called off during dispose, and nothing would notice.
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Tried to pin both and could not, so here is what I found rather than a promise.
Proving a negative here means showing a second call never happens, and the call it must not make is scheduled behind two nested waits: CapabilitiesRepository's 500 ms backoff, and before that Batcher's 2-second collection window. Asserting immediately passes on broken code; waiting it out costs ~2.5 s per test.
So I spiked time control. package:clock cannot do it — it is DateTime-only, no timers. fake_async needs everything in one zone, so I added a useFakeAsync flag to testWithTester that builds the client, connects and runs setUp inside it. That part worked — the client reached Connected and the event was handled under fake time. But ownBatch still never fired even after elapsing past both windows, and chasing it further meant going deeper into Batcher than this finding justifies. I reverted the spike.
One real bug fell out: Batcher._planBatchFetch uses DateTime.now() rather than clock.now(), so its window reads real wall time under any faked clock. Migrating that is going in separately.
The gap stands, and the follow-up now has a concrete scope: make the batcher and the backoff observable under fake time, then both branches become one-line assertions.
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Correcting my earlier reply on this thread — I was wrong twice.
fakeAsync does work here. My first attempt failed because I built the client outside the zone. Stream.listen binds the zone it is called in, so a client subscribed outside schedules its work outside, where elapse cannot reach it. Building it inside makes all eight branches assertable with no sleeping — I had them green.
And the reason nothing was retrying was a bug, not the test. Batcher.add does _nextActionCompleter ??= _planBatchFetch(), but _planBatchFetch owns that field and clears it when it runs the batch on the spot, so the ??= wrote a completed completer straight back. After the first batch every later add joined that settled one instead of planning its own. Feed capabilities were being fetched once per client — every feed discovered afterwards got the first batch's result.
Fixed in 26e0388 with six tests, and 4f9821f moves Batcher and FeedState onto package:clock so the window is answerable to a test at all.
The eight retry-branch tests are not in this PR. Getting them to the state surface needs a buildFeedTester — a synchronous builder beside feedTest, the same shape core has with buildTester beside wsClientTest — and that is harness work that deserves its own review rather than riding along here. Following up separately; the branches themselves are written and passing, so it is a matter of landing the harness.
| StreamApiException? previousError, | ||
| ) async { | ||
| if (previousError?.isTokenExpiredError ?? false) { | ||
| if (previousError?.isTokenExpired ?? false) { |
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Since the line is being touched anyway: previousError?.isTokenExpired == true reads better than ?? false for a nullable bool, and it's what the rest of the codebase leans towards.
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Left as ?? false for now — you and CodeRabbit both landed on this line, and it is the one place I would rather not touch twice in one review. Happy to take it in a follow-up sweep if the codebase is standardising on == true.
| var exception = StreamException.tryFrom(error); | ||
| exception ??= StreamClientException( | ||
| message: 'Failed to create a guest user', | ||
| error: error, | ||
| cause: error, | ||
| stackTrace: stackTrace, | ||
| ), | ||
| ); | ||
| ); | ||
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| throw exception; |
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Two small things.
The var / ??= / throw shuffle is a ?? in disguise:
final response = result.getOrElse((error, stackTrace) {
throw StreamException.tryFrom(error) ??
StreamClientException(
message: 'Failed to create a guest user',
cause: error,
stackTrace: stackTrace,
);
});And on the path where tryFrom succeeds, the bare throw restarts the stack trace at this line — the original one arrives in getOrElse as stackTrace and is dropped. Error.throwWithStackTrace(exception, stackTrace) keeps it, which is the difference between a trace pointing at the failing request and one pointing here.
Same shape at line 381.
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Took the stack trace half in 60f0caf, at both sites. Result.getOrThrow in core already does exactly this, so it is now consistent with it.
Left the var/??= shuffle alone — same reasoning as the ?? false thread, keeping this review to one pass over the line.
| var exception = StreamException.tryFrom(source.cause); | ||
| exception ??= StreamNetworkException(message: source.closeReason, cause: source.cause); |
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When tryFrom hits, source.closeReason survives only in the log line above — the thrown exception carries whatever message the cause already had. Previously the close reason was always the message. It's the one piece of context that says why the socket went away, so it's worth folding into the classified exception too rather than only the unclassified fallback.
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Left as is for now. Folding source.closeReason into a classified exception means building a new one rather than passing through what tryFrom returned, and that trades a message for the cause's own identity — which is the thing the trace fix in 60f0caf just went to some trouble to preserve. Worth doing, but as its own change where that trade can be looked at properly rather than alongside five unrelated fixes.
| /// Throws an [ArgumentError] if two of those attachments share an id. Ids | ||
| /// default to a fresh UUID, so this only happens when one is given | ||
| /// explicitly, or the same attachment is listed twice. |
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This throw is documented on addActivity, addComment and addCommentsBatch, but only tested at the processRequestsBatch level in uploader_test.dart. Since the whole point is that it escapes a Result-returning method, one test at the public surface — addActivity with two attachments sharing an id — would pin the contract where callers actually meet it.
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Added in 89b5f9a: addActivity with two attachments sharing an id, asserting throwsArgumentError and that nothing was posted. Pinned where callers meet the contract rather than at the processRequestsBatch seam, which was your point.
| ); | ||
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| // A blip is worth asking again for; the loop allows exactly one retry. | ||
| await Future<void>.delayed(const Duration(milliseconds: 700)); |
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700 ms of real wall clock against the hardcoded 500 ms backoff in _fetchWithRetry. It works, but the margin is thin for a loaded CI machine, and it's 700 ms every run. Injecting the delay into CapabilitiesRepository would let this run under fakeAsync and assert the retry timing rather than sleeping past it.
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Still sleeping, but shorter and self-describing — it now waits retryBackoff + 200ms off a named constant rather than a bare 700.
The fakeAsync route is blocked for the reason in the capabilities_repository thread: Batcher adds a 2-second window on top of the backoff, and it reads wall-clock time. Detail there.
`StreamApiError` is not gone: it is still the server's error payload and still the type of `ConnectionErrorEvent.error`. What changed is that it is no longer what the SDK throws or returns, so someone matching on `connection.error` was being sent looking for a replacement that does not exist. Two breaking changes were missing entirely. The attachment uploader's `upload` and `uploadBatch` changed shape, and they are public here through `StreamFeedsClient.attachmentUploader`. And `addActivity`, `addComment` and `addCommentsBatch` now throw on a duplicate attachment id where they used to report through the `Result` — a change no compiler will point out. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Rethrowing a classified exception plainly restarts its trace at the rethrow, so what reached the caller pointed at `feeds_client_impl` rather than at the request or the socket that actually failed. `Result.getOrThrow` in core already uses `Error.throwWithStackTrace` for this reason. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Four examples still told readers to expect a `ClientException`, which this branch removes. The types are the ones the client tests assert: a refused token is answered by the server, so `StreamApiException`; credentials that could not be sent never reach it, so `StreamClientException`. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`any(named: 'ownBatchRequest')` matched anything, so the test passed whatever feed the handler asked about. Naming the request pins it — and shows the call goes out as `OwnBatchRequest(feeds: ['other'])`, the bare feed id rather than the fid. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Two attachments sharing an id throw an `ArgumentError` out of a method that otherwise reports through a `Result`, so a caller that only folds never sees it. That was covered at the `processRequestsBatch` seam; this covers it at `addActivity`, where the contract is actually met, and checks nothing is posted. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Thanks — all seven inline threads answered, plus the open CodeRabbit one. Five findings fixed, two deliberately left with reasoning in place. On the two from your summary that had nowhere to anchor: The GetStream/chat#16408 — happy to add the link to the description, but it is your PR body; say the word and I will, or grab it yourself. One thing worth a follow-up issue, found while pinning the capabilities request: the call goes out as 🤖 Replies assisted by Claude Code |
`DateTime.now()` and `DateTime.timestamp()` read the wall clock, which no test can move. `Batcher` computes its collection window from one, so the window was unobservable; `FeedState`'s read and seen timestamps are stamped from the other. `package:clock` is what `fakeAsync` fakes, so reading through it makes both answerable to a test without changing what they do at runtime. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`_nextActionCompleter ??= _planBatchFetch()` null-checks the field, then writes the callee's return value back over it — but `_planBatchFetch` owns that field, and clears it when it runs the batch on the spot. So after the first batch the field held a completed completer, every later add joined it instead of planning, and its item sat in `_itemsToProcess` unsent. Feed capabilities go through this, so they were fetched once per client and every feed discovered afterwards was answered with the first batch's result. Six tests cover it, including the two the dartdoc already promised: an add is answered by the batch that carried it, and everyone in a batch is answered with the whole batch. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A `StreamException` no longer carries a trace: the trace describes the raise, so it travels beside the failure. The three sites that read one off an exception now take it from whatever carried it — `BatchUploadStoppedOnError` for a batch that gave up, the `DisconnectionSource` for a connection that closed — or let `throw` capture it where the exception is made here. Also unblocks CI: `clock` is relaxed to `^1.1.2`, matching stream_core, so it resolves against the `clock 1.1.2` the legacy Flutter's `flutter_test` pins. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…s use `melos.yaml` is where these are declared; bootstrap writes them into every package pubspec, so a stale entry there reverted the pin and stripped the `# ignore: invalid_dependency` comment along with it — which is what failed both analyze jobs. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2 participants
Migrates
stream_feedsonto two stackedstream_corechanges:AttachmentUploadTask/AttachmentUploadBatchThey land as one PR because #170 is stacked on #168 and needs its exception types; the pin below resolves to #170's head, which contains both.
Important
stream_coreis pinned toca4f472846592f7221e9cede6ec0adf89846e39e, a commit on an unmerged branch. This cannot merge until #168 and #170 land and the pin moves to a released version.Errors
Every failure now arrives as a
StreamExceptionsubclass —StreamApiException,StreamNetworkException,StreamAuthenticationExceptionorStreamClientException.ClientException,HttpClientExceptionandStreamApiErrorare gone.StreamFeedsExceptionis added as an alias of the base type, so oneonclause still catches everything.The two API seams (
default_api.dart,cdn_api.dart) switch their call adapter fromrunSafelytorunApiSafely, which classifies a transport failure where it happens instead of handing callers a rawStreamDioExceptionto unwrap.capabilities_repositoryis the visible payoff — it now reads a status code offStreamApiExceptiondirectly rather than unwrapping two layers and null-checking the result:connectnow throws aStateErrorwhen asked for a connection it already has or is already opening, leaving exceptions for actual failures.Uploads
processRequestsBatchuploads every request's attachments as one batch rather than one batch per request. Before, N requests meant N independent concurrency limits, soActivity.addCommentsBatchwith 5 comments andmaxConcurrent: 5could have 25 uploads in flight; and a failure in one request left the others uploading work that was about to be discarded.processRequestis now just the single-request case of the same path.The fold back into requests is two private functions —
_distributebuilds the id → attachment map once and_withUploadedmerges one request's share — so the work stays linear in the number of attachments however many requests share the batch.processRequestsBatchnow throws anArgumentErrorif two requests share an attachment id, which one batch cannot tell apart.The call adapter at the bottom of
lib/src/generated/api/api/default_api.dartis part of the generator template, so the switch to
runApiSafelyishand-applied here and needs the same change upstream in the generator.
Verification
melos run analyze(--fatal-infos, all four packages) andformat:verifyclean; 515 tests pass.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation