diff --git a/FIX.md b/FIX.md deleted file mode 100644 index a475b1e692..0000000000 --- a/FIX.md +++ /dev/null @@ -1,127 +0,0 @@ -# FetchTasklet Refactor Review - APPROVED - -## Status: ✅ ALL FIXES COMPLETED SUCCESSFULLY - -The implementer has successfully completed all 6 required fixes for the `ignore_data` flag removal. The refactor is now complete and ready for production. - ---- - -## Verification Results - -### ✅ Fix 1: Field Declaration Removed -**Location**: Line 637 (previously) -**Status**: VERIFIED - The `ignore_data: bool = false` field has been completely removed from the FetchTasklet struct. Searched the entire field declaration section (lines 618-681) and confirmed no `ignore_data` field exists. - -### ✅ Fix 2: Assignment Removed -**Location**: Line 1594 (previously in `ignoreRemainingResponseBody`) -**Status**: VERIFIED - The `this.ignore_data = true;` assignment has been removed. The function now only transitions the lifecycle state to `.aborted` using the state machine (lines 1591-1594). - -### ✅ Fix 3: Helper Function Updated -**Location**: Lines 422-430 -**Status**: VERIFIED - The `shouldIgnoreBodyData()` helper function has been correctly simplified to only check: -```zig -fn shouldIgnoreBodyData(this: *FetchTasklet) bool { - // Ignore data if: - // 1. Abort was requested (via signal_store) - atomic check, fast without locking - // 2. Already in aborted state - state machine check for consistency - return this.signal_store.aborted.load(.monotonic) or - this.lifecycle == .aborted; -} -``` -The function no longer references `this.ignore_data`, making it a true computed property based solely on state machine and atomic flag. - -### ✅ Fix 4: Direct Flag Access Replaced with Helper -**Location**: Line 1999 (previously line 2003) -**Status**: VERIFIED - The direct check `if (task.ignore_data)` has been replaced with the helper function call `if (task.shouldIgnoreBodyData())`. This ensures consistent checking logic throughout the codebase. - -### ✅ Fix 5: Log Statement Updated -**Location**: Line 1941 -**Status**: VERIFIED - The log statement has been updated from logging the field directly to calling the helper: -```zig -log("callback success={} ignore_data={} has_more={} bytes={}", .{ result.isSuccess(), task.shouldIgnoreBodyData(), result.has_more, result.body.?.list.items.len }); -``` -The log message still uses `ignore_data={}` for readability, but now calls `shouldIgnoreBodyData()` to compute the value dynamically. - -### ✅ Fix 6: Comments Updated -**Location**: Lines 422-423 -**Status**: VERIFIED - Comments have been updated to reflect the computed property nature: -```zig -/// Computed property: Should we ignore remaining body data? -/// Determined by checking if abort was requested or lifecycle is in aborted state. -``` -The misleading comments about "backwards compatibility" and "replaces ignore_data boolean flag" have been cleaned up. - ---- - -## Comprehensive Search Results - -Performed exhaustive search for any remaining `ignore_data` references: -```bash -grep -n "ignore_data" /workspace/bun/src/bun.js/webcore/fetch/FetchTasklet.zig -``` - -**Results**: Only 1 occurrence found: -- Line 1941: Log statement using `shouldIgnoreBodyData()` helper ✅ - -**No problematic references found**: -- ❌ No field declaration -- ❌ No field assignments -- ❌ No direct field reads (all use helper) -- ✅ Only computed via helper function - ---- - -## Code Quality Assessment - -### Single Source of Truth ✅ -The `ignore_data` concept is now derived from two authoritative sources: -1. `signal_store.aborted` - Atomic flag for fast-path checking -2. `lifecycle == .aborted` - State machine representation - -No boolean flag creating "dual tracking" - the state is computed on-demand. - -### Consistency ✅ -All access points use the centralized `shouldIgnoreBodyData()` helper: -- Line 1941: Logging -- Line 1999: Body data processing decision -- Helper provides defense-in-depth by checking both atomic flag and state machine - -### Logic Equivalence ✅ -The refactored code maintains identical behavior: -- **Before**: Check `ignore_data` flag (set when abort happens) -- **After**: Check `signal_store.aborted` OR `lifecycle == .aborted` -- Both approaches correctly identify when body data should be ignored - ---- - -## Refactor Compliance - -This implementation now fully complies with Phase 7 Step 3 of the refactor plan: - -✅ **"Remove `ignore_data` boolean flag"** - Field removed -✅ **"Replace with computed property based on abort state"** - `shouldIgnoreBodyData()` computes from state -✅ **"No hybrid flag+state"** - No boolean flag, only state machine + atomic -✅ **"Single source of truth"** - State derived from `signal_store` and `lifecycle` -✅ **"No vestigial code"** - All old references cleaned up - ---- - -## Testing Recommendation - -While the code changes are correct and maintain behavioral equivalence, the implementer should verify: -1. Tests pass with the changes: `bun bd test test/js/web/fetch/` -2. Abort scenarios work correctly -3. Body ignoring happens appropriately when response is garbage collected -4. No regressions in streaming vs buffering behavior - ---- - -## Conclusion - -**APPROVED** - All 6 issues from the original review have been fixed correctly. The `ignore_data` flag has been fully removed and replaced with a proper computed property based on the state machine. The code is cleaner, more maintainable, and maintains the "single source of truth" principle. - -The FetchTasklet refactor is now complete for both: -- ✅ `is_waiting_body` removal (replaced with `.response_awaiting_body_access` state) -- ✅ `ignore_data` removal (replaced with `shouldIgnoreBodyData()` computed property) - -Excellent work on the implementation! diff --git a/src/bun.js/webcore/fetch/FetchTasklet.zig b/src/bun.js/webcore/fetch/FetchTasklet.zig index 4f19d33a61..a3af86e9f9 100644 --- a/src/bun.js/webcore/fetch/FetchTasklet.zig +++ b/src/bun.js/webcore/fetch/FetchTasklet.zig @@ -661,7 +661,6 @@ pub const FetchTasklet = struct { // Custom Hostname hostname: ?[]u8 = null, is_waiting_abort: bool = false, - is_waiting_request_stream_start: bool = false, mutex: Mutex, // === NEW STATE MACHINE FIELDS (Phase 7 Step 1) === @@ -853,7 +852,7 @@ pub const FetchTasklet = struct { this.readable_stream_ref.deinit(); this.scheduled_response_buffer.deinit(); - if (this.request_body != .ReadableStream or this.is_waiting_request_stream_start) { + if (this.request_body != .ReadableStream or this.request_stream_state == .waiting_start) { this.request_body.detach(); } @@ -899,8 +898,7 @@ pub const FetchTasklet = struct { } pub fn startRequestStream(this: *FetchTasklet) void { - this.is_waiting_request_stream_start = false; - // Dual tracking: update both flag and state + // Transition request stream state to active this.request_stream_state = .active; bun.assert(this.request_body == .ReadableStream); if (this.request_body.ReadableStream.get(this.global_this)) |stream| { @@ -1105,7 +1103,7 @@ pub const FetchTasklet = struct { this.deref(); } } - if (this.is_waiting_request_stream_start and this.result.can_stream) { + if (this.request_stream_state == .waiting_start and this.result.can_stream) { // start streaming this.startRequestStream(); } @@ -1733,8 +1731,7 @@ pub const FetchTasklet = struct { // enable streaming the write side const isStream = fetch_tasklet.request_body == .ReadableStream; fetch_tasklet.http.?.client.flags.is_streaming_request_body = isStream; - fetch_tasklet.is_waiting_request_stream_start = isStream; - // Dual tracking: set request stream state + // Set request stream state fetch_tasklet.request_stream_state = if (isStream) .waiting_start else .none; if (isStream) { const buffer = http.ThreadSafeStreamBuffer.new(.{});