use reflect.TypeAssert#3699
Conversation
WalkthroughReplaces direct type assertions with reflection-based generic casts across helpers, core request locals, and multiple middlewares (auth, cache, CSRF, logger, request ID, session). Adds nil guards, explicit panics in pool acquisitions, and clears pooled maps before reuse. No exported/public signatures changed. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
actor Client
participant MW as Middleware
participant Ctx as Context
participant Pool as Pool/Store
Client->>MW: Request
MW->>Ctx: Ctx.Locals(key)
alt value exists
MW->>MW: reflect.TypeAssert[T](value)
alt assert ok
MW-->>Client: Use typed value
else assert fails
MW-->>Client: Use zero value / return nil
end
else nil
MW-->>Client: Use zero value / return nil
end
Note over MW,Pool: Pool acquisitions use reflect.TypeAssert<br/>with explicit panic on unexpected types
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~30 minutes Possibly related PRs
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Summary of Changes
Hello @ReneWerner87, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request refactors the codebase to replace direct Go type assertions (.(type)) with the more explicit reflect.TypeAssert function. This change is systematically applied across various core components, including middleware, request helpers, logging utilities, and session management, aiming to enhance type safety and consistency, especially when dealing with values retrieved from sync.Pool or context locals.
Highlights
- Widespread Adoption of reflect.TypeAssert: The primary change involves migrating numerous direct type assertions (value.(Type)) to reflect.TypeAssertType across the codebase.
- Improved Type Safety and Robustness: This refactoring enhances type safety by using a more explicit reflection-based assertion mechanism, particularly for values retrieved from sync.Pool and fiber.Ctx.Locals(), often including explicit nil checks.
- Consistent Pattern Application: The new type assertion pattern is consistently applied to various middleware components (e.g., BasicAuth, Cache, CSRF, KeyAuth, Logger, RequestID, Session) and core utility functions, promoting a unified approach to type handling.
- Refinement of Pool and Context Value Handling: Specific attention has been given to how values are acquired from sync.Pool and retrieved from fiber.Ctx.Locals, ensuring more robust and explicit type conversions.
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #3699 +/- ##
==========================================
- Coverage 91.79% 91.62% -0.18%
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Files 114 114
Lines 11536 11592 +56
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+ Hits 10590 10621 +31
- Misses 684 701 +17
- Partials 262 270 +8
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Pull Request Overview
This PR replaces direct type assertions with reflect.TypeAssert across the codebase to improve type safety and error handling. The change affects middleware components, request helpers, and utility functions that previously used direct type assertions with the .(type) syntax.
Key changes:
- Replace direct type assertions with reflection-based
reflect.TypeAssertcalls - Add nil checks before attempting type assertions
- Update pool-based resource acquisition to use reflection
Reviewed Changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated 7 comments.
Show a summary per file
| File | Description |
|---|---|
| req.go | Updates the generic Locals function to use reflect.TypeAssert |
| middleware/session/*.go | Replaces type assertions in session management with reflection-based checks |
| middleware/requestid/requestid.go | Updates context value retrieval to use reflect.TypeAssert |
| middleware/logger/*.go | Converts logger tag processing and timestamp handling to use reflection |
| middleware/keyauth/keyauth.go | Updates token extraction to use reflect.TypeAssert |
| middleware/csrf/*.go | Converts CSRF token and handler retrieval to use reflection |
| middleware/cache/*.go | Updates cache manager and heap operations to use reflection |
| middleware/basicauth/basicauth.go | Converts username extraction to use reflect.TypeAssert |
| helpers.go | Updates header parameter pool usage to use reflection |
| } | ||
| } else { | ||
| params, _ = headerParamPool.Get().(headerParams) //nolint:errcheck // only contains headerParams | ||
| params, _ = reflect.TypeAssert[headerParams](reflect.ValueOf(headerParamPool.Get())) //nolint:errcheck // only contains headerParams |
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Missing import for reflect package. The reflect package is used but not imported in this file.
| obj := sessionPool.Get() | ||
| if obj == nil { | ||
| panic("unexpected type in session pool") | ||
| } |
There was a problem hiding this comment.
The sync.Pool.Get() method never returns nil. This check is unnecessary and the panic will never be triggered. The pool creates new objects using the New function when empty.
| } |
| if obj == nil { | ||
| panic("unexpected type in data pool") | ||
| } | ||
| if d, ok := reflect.TypeAssert[*data](reflect.ValueOf(obj)); ok { |
There was a problem hiding this comment.
The sync.Pool.Get() method never returns nil. This check is unnecessary and the panic will never be triggered. The pool creates new objects using the New function when empty.
| if d, ok := reflect.TypeAssert[*data](reflect.ValueOf(obj)); ok { | |
| if d, ok := obj.(*data); ok { |
| v := middlewarePool.Get() | ||
| if v == nil { | ||
| panic(ErrTypeAssertionFailed.Error()) | ||
| } |
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The sync.Pool.Get() method never returns nil. This check is unnecessary and the panic will never be triggered. The pool creates new objects using the New function when empty.
| } |
| func (m *manager) acquire() *item { | ||
| return m.pool.Get().(*item) //nolint:forcetypeassert,errcheck // We store nothing else in the pool | ||
| obj := m.pool.Get() | ||
| it, _ := reflect.TypeAssert[*item](reflect.ValueOf(obj)) //nolint:errcheck // We store nothing else in the pool |
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If reflect.TypeAssert fails, it will be nil and returning it could cause a panic when the caller tries to use the returned item. The original code used a direct type assertion which would panic on failure, but this change silently returns nil.
| it, _ := reflect.TypeAssert[*item](reflect.ValueOf(obj)) //nolint:errcheck // We store nothing else in the pool | |
| it := obj.(*item) // We store nothing else in the pool |
|
|
||
| func (h *indexedHeap) Push(x any) { | ||
| h.pushInternal(x.(heapEntry)) //nolint:forcetypeassert,errcheck // Forced type assertion required to implement the heap.Interface interface | ||
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion |
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If reflect.TypeAssert fails, entry will be a zero value which could cause incorrect heap operations. The original forced type assertion would panic on failure, but this change silently continues with invalid data.
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion | |
| entry, ok := x.(heapEntry) | |
| if !ok { | |
| panic("cache: Push expects heapEntry type") | |
| } |
|
|
||
| func (h *indexedHeap) removeInternal(realIdx int) (string, uint) { | ||
| x := heap.Remove(h, realIdx).(heapEntry) //nolint:forcetypeassert,errcheck // Forced type assertion required to implement the heap.Interface interface | ||
| x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface |
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If reflect.TypeAssert fails, x will be a zero value which could return incorrect key and bytes values. The original forced type assertion would panic on failure, but this change silently continues with invalid data.
| x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface | |
| x := heap.Remove(h, realIdx).(heapEntry) // Forced type assertion required to implement the heap.Interface interface |
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Code Review
This pull request refactors the codebase to consistently use reflect.TypeAssert for type assertions. While this improves consistency across the codebase, I've found several instances where a panicking type assertion was replaced with a silent one that returns a zero value on failure. This change in behavior can hide potential bugs and make debugging more difficult. My review includes suggestions to restore the explicit-failure behavior by checking the result of the type assertion and panicking if it fails. Other changes are functionally equivalent to the original code and look good.
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion | ||
| h.pushInternal(entry) |
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The change from a panicking type assertion x.(heapEntry) to reflect.TypeAssert which returns a zero value on failure (with the ok value discarded) changes the behavior of this function. Previously, passing an incorrect type to heap.Push on this heap would cause a panic, immediately highlighting a programmer error. Now, it will silently push a zero-valued heapEntry onto the heap, which could lead to subtle bugs that are harder to track down. It would be safer to check the ok return value and panic if the assertion fails, to preserve the original behavior.
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion | |
| h.pushInternal(entry) | |
| entry, ok := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) | |
| if !ok { | |
| panic("an invalid type was pushed to the heap") | |
| } | |
| h.pushInternal(entry) |
|
|
||
| func (h *indexedHeap) removeInternal(realIdx int) (string, uint) { | ||
| x := heap.Remove(h, realIdx).(heapEntry) //nolint:forcetypeassert,errcheck // Forced type assertion required to implement the heap.Interface interface | ||
| x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface |
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Similar to the Push method, changing the panicking type assertion to a silent one with reflect.TypeAssert can hide bugs. If heap.Remove returns a value that is not a heapEntry, this function will now return "", 0 instead of panicking. This silent failure can make debugging more difficult. It's better to check the ok value and panic if the assertion fails.
x, ok := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx)))
if !ok {
panic("an invalid type was removed from the heap")
}| obj := m.pool.Get() | ||
| it, _ := reflect.TypeAssert[*item](reflect.ValueOf(obj)) //nolint:errcheck // We store nothing else in the pool | ||
| return it |
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The change from a panicking type assertion to reflect.TypeAssert which returns a zero value (a nil pointer for *item) on failure can lead to nil pointer dereferences in the calling code, which is further away from the root cause. The original panicking assertion would immediately flag a corrupted sync.Pool, which is more direct. It would be safer to check the ok value from reflect.TypeAssert and panic if the assertion fails, to maintain the previous explicit failure behavior.
obj := m.pool.Get()
it, ok := reflect.TypeAssert[*item](reflect.ValueOf(obj))
if !ok {
panic("invalid type in sync.Pool")
}
return it| if data.ChainErr != nil { | ||
| formatErr = colors.Red + " | " + data.ChainErr.Error() + colors.Reset | ||
| } | ||
| ts, _ := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load())) |
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The original code used a panicking type assertion .(string), which would immediately fail if the timestamp was not a string. The new code with reflect.TypeAssert will silently produce an empty string if the type assertion fails because the ok value is discarded. While this might prevent a crash in the logger, it can also hide potential bugs where data.Timestamp is not being set correctly. Consider checking the ok return value and handling the error case explicitly, for example by logging a warning or panicking as before, to ensure data integrity.
ts, ok := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load()))
if !ok {
panic("logger: timestamp is not a string")
}![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
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Actionable comments posted: 14
Caution
Some comments are outside the diff and can’t be posted inline due to platform limitations.
⚠️ Outside diff range comments (5)
helpers.go (1)
1-1: Ensure Go 1.25 Toolchain for reflect.TypeAssertWe didn’t detect a
go.modin the repo or any CI configuration specifying the Go version. Because the code usesreflect.TypeAssert(added in Go 1.25), builds will fail on earlier toolchains. To address this:
Add or update your module file
• Create ago.modat the repository root (if one doesn’t already exist) with:module your/module/path go 1.25• This
go 1.25directive enables the compiler’s newreflect.TypeAssertAPI.Configure CI to use Go 1.25
• In your CI (GitHub Actions, CircleCI, Travis, etc.), ensure the Go version is set to at least1.25.x.
• For example, in GitHub Actions:- uses: actions/setup-go@v4 with: go-version: '1.25.x'Fallback or shim for older toolchains (optional)
• If you must maintain compatibility with Go 1.24 or earlier, provide a custom implementation ofreflect.TypeAssertor guard its uses behind build tags.Making these changes is critical to ensure the code compiles and the new
reflect.TypeAssertcalls are supported.middleware/csrf/csrf.go (1)
208-216: Blocking: Same compile error here; replace with safe type assertionReplace the non-existent reflect.TypeAssert with a comma-ok assertion and return nil on failure.
-func HandlerFromContext(c fiber.Ctx) *Handler { - v := c.Locals(handlerKey) - if v == nil { - return nil - } - handler, ok := reflect.TypeAssert[*Handler](reflect.ValueOf(v)) - if !ok { - return nil - } - return handler -} +func HandlerFromContext(c fiber.Ctx) *Handler { + raw := c.Locals(handlerKey) + if h, ok := raw.(*Handler); ok { + return h + } + return nil +}middleware/logger/default_logger.go (1)
3-10: Remove unused reflect import after replacing TypeAssertimport ( "fmt" "io" "os" - "reflect" "strconv"middleware/cache/manager.go (1)
62-76: Leak/stale header risk: cencoding isn’t reset in release()item has cencoding []byte, but release doesn’t nil it. This can retain memory and leak stale header state across requests.
func (m *manager) release(e *item) { // don't release item if we using in-memory storage if m.storage == nil { return } e.body = nil e.ctype = nil + e.cencoding = nil e.status = 0 e.age = 0 e.exp = 0 e.ttl = 0 e.headers = nil m.pool.Put(e) }middleware/session/data.go (1)
33-42: Duplicate panic messages could be misleadingThe function has two identical panic messages for different error conditions (nil check vs type assertion failure), which makes debugging harder when a panic occurs.
Use distinct error messages to differentiate between nil pool objects and type assertion failures:
func acquireData() *data { obj := dataPool.Get() if obj == nil { - panic("unexpected type in data pool") + panic("data pool returned nil") } if d, ok := reflect.TypeAssert[*data](reflect.ValueOf(obj)); ok { return d } // Handle unexpected type in the pool panic("unexpected type in data pool") }
🧹 Nitpick comments (13)
req.go (1)
528-535: Avoid reflection on the set path; return early to reduce overhead.When setting a local (
len(value) > 0), you already know the concrete type. You can set and return immediately, skipping reflect. Keeps the get-path unchanged.func Locals[V any](c Ctx, key any, value ...V) V { - var v V - var ok bool - var raw any - if len(value) == 0 { - raw = c.Locals(key) - } else { - raw = c.Locals(key, value[0]) - } - if raw != nil { - v, ok = reflect.TypeAssert[V](reflect.ValueOf(raw)) - } - if !ok { - return v // return zero of type V - } - return v + if len(value) == 0 { + if raw := c.Locals(key); raw != nil { + if v, ok := reflect.TypeAssert[V](reflect.ValueOf(raw)); ok { + return v + } + } + var zero V + return zero + } + c.Locals(key, value[0]) + return value[0] }middleware/basicauth/basicauth.go (2)
84-92: Use the generic helper to drop reflection and the extra import.You can leverage
fiber.Locals[string]for a typed fetch and remove the directreflectusage here. Same behavior, less code.-func UsernameFromContext(c fiber.Ctx) string { - v := c.Locals(usernameKey) - if v == nil { - return "" - } - if username, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { - return username - } - return "" -} +func UsernameFromContext(c fiber.Ctx) string { + return fiber.Locals[string](c, usernameKey) +}If you apply this, you can also remove the
reflectimport from this file.
5-5: If adopting the generic helper, remove the reflect import.After switching to
fiber.Locals[string], thereflectimport becomes unused.-import ( - "encoding/base64" - "reflect" - "strings" - "github.com/gofiber/fiber/v3" - "github.com/gofiber/utils/v2" -) +import ( + "encoding/base64" + "strings" + "github.com/gofiber/fiber/v3" + "github.com/gofiber/utils/v2" +)middleware/requestid/requestid.go (2)
49-58: Prefer the generic helper over reflection for clarity and consistency.
fiber.Locals[string]already encapsulates the cast. This removes the need forreflectand keeps the behavior identical.-func FromContext(c fiber.Ctx) string { - v := c.Locals(requestIDKey) - if v == nil { - return "" - } - if rid, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { - return rid - } - return "" -} +func FromContext(c fiber.Ctx) string { + return fiber.Locals[string](c, requestIDKey) +}
3-5: Drop reflect import if using the generic helper.After the change above,
reflectis no longer needed here.-import ( - "reflect" - - "github.com/gofiber/fiber/v3" -) +import "github.com/gofiber/fiber/v3"middleware/logger/default_logger.go (1)
72-74: Prefer regular type assertion; optionally add a fallback for robustnessReplace the invalid API; optionally fallback to fmt.Sprint to avoid empty timestamps when the value isn’t a string.
Minimal fix:
- if ts, ok := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load())); ok { + if ts, ok := data.Timestamp.Load().(string); ok { buf.WriteString(ts) }Optional, more robust:
- if ts, ok := data.Timestamp.Load().(string); ok { - buf.WriteString(ts) - } + if ts, ok := data.Timestamp.Load().(string); ok { + buf.WriteString(ts) + } else { + buf.WriteString(fmt.Sprint(data.Timestamp.Load())) + }middleware/cache/manager.go (1)
108-121: Follow-up: consider handling storage errors instead of ignoring themYou currently ignore errors from Set/Get/DeleteWithContext. If storage fails, callers get silent cache misses. Consider logging, metrics, or surfacing errors where appropriate.
No blocking change required, but here’s a minimal pattern you can apply later:
if raw, err := m.storage.GetWithContext(ctx, key); err == nil && raw != nil { // ... } else if err != nil && !errors.Is(err, fiber.ErrNotFound) { // log or metric }middleware/logger/tags.go (2)
172-183: Redundant value checks due to reflection overheadThe refactored
TagLocalsfunction now makes two separate reflection calls (reflect.ValueOf(v)) for the same value. This creates unnecessary overhead compared to a single type switch.Consider using a single reflection call to avoid redundant overhead:
TagLocals: func(output Buffer, c fiber.Ctx, _ *Data, extraParam string) (int, error) { v := c.Locals(extraParam) if v == nil { return 0, nil } - if b, ok := reflect.TypeAssert[[]byte](reflect.ValueOf(v)); ok { + rv := reflect.ValueOf(v) + if b, ok := reflect.TypeAssert[[]byte](rv); ok { return output.Write(b) } - if s, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { + if s, ok := reflect.TypeAssert[string](rv); ok { return output.WriteString(s) } return output.WriteString(fmt.Sprintf("%v", v)) },
205-210: Consider logging or returning an error for failed timestamp extractionWhen the timestamp cannot be extracted as a string, the function silently returns an empty string. This could mask issues with timestamp handling in production.
Consider returning an error or a default timestamp format to make debugging easier:
TagTime: func(output Buffer, _ fiber.Ctx, data *Data, _ string) (int, error) { if ts, ok := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load())); ok { return output.WriteString(ts) } - return output.WriteString("") + // Return a placeholder to indicate extraction failure + return output.WriteString("[timestamp error]") },middleware/session/session.go (1)
306-314: Potentially unnecessary reflection overhead in Save methodThe Save method now uses reflection to check if the session is being managed by middleware. Given the frequency of Save calls, this added reflection overhead might impact performance.
Consider caching the reflection result or using a more direct approach:
// If the session is being used in the handler, it should not be saved if v := s.ctx.Locals(middlewareContextKey); v != nil { - if m, ok := reflect.TypeAssert[*Middleware](reflect.ValueOf(v)); ok { - if m.Session == s { - // Session is in use, so we do nothing and return - return nil - } + // Since we control what goes into middlewareContextKey, we can use direct assertion + // with confidence based on the codebase invariants + if m, ok := v.(*Middleware); ok && m.Session == s { + // Session is in use, so we do nothing and return + return nil } }Alternatively, if reflection is required for consistency, cache the
reflect.ValueOf(v)result:if v := s.ctx.Locals(middlewareContextKey); v != nil { - if m, ok := reflect.TypeAssert[*Middleware](reflect.ValueOf(v)); ok { + rv := reflect.ValueOf(v) + if m, ok := reflect.TypeAssert[*Middleware](rv); ok { if m.Session == s { // Session is in use, so we do nothing and return return nil } } }middleware/session/store.go (2)
99-103: Consider performance impact of reflection in Get methodThe
Getmethod is likely called frequently during request processing. The added reflection overhead for type checking might impact performance, especially under high load.Since the middleware controls what gets stored in
middlewareContextKey, consider using direct type assertion with appropriate documentation:// If session is already loaded in the context, // it should not be loaded again if v := c.Locals(middlewareContextKey); v != nil { - if _, ok := reflect.TypeAssert[*Middleware](reflect.ValueOf(v)); ok { - return nil, ErrSessionAlreadyLoadedByMiddleware - } + // Direct assertion is safe as we control what goes into middlewareContextKey + if _, ok := v.(*Middleware); ok { + return nil, ErrSessionAlreadyLoadedByMiddleware + } }
127-134: Unnecessary intermediate variables and reflection overheadThe refactored code introduces intermediate variables (
id,ok) and uses reflection where a simpler approach would suffice.Simplify the session ID extraction:
-var id string -var ok bool -if v := c.Locals(sessionIDContextKey); v != nil { - id, ok = reflect.TypeAssert[string](reflect.ValueOf(v)) -} -if !ok { +id, ok := c.Locals(sessionIDContextKey).(string) +if !ok || id == "" { id = s.getSessionID(c) }If reflection is required for consistency with the PR's approach, at least avoid the intermediate variables:
-var id string -var ok bool -if v := c.Locals(sessionIDContextKey); v != nil { - id, ok = reflect.TypeAssert[string](reflect.ValueOf(v)) -} +id := "" +if v := c.Locals(sessionIDContextKey); v != nil { + id, _ = reflect.TypeAssert[string](reflect.ValueOf(v)) +} -if !ok { +if id == "" { id = s.getSessionID(c) }middleware/session/middleware.go (1)
143-152: Overly defensive nil check may indicate pool misconfigurationThe middleware pool's
Newfunction (lines 35-39) always returns a*Middleware, so getting nil from the pool would indicate a serious misconfiguration or memory corruption issue.Consider simplifying since the pool should never return nil:
func acquireMiddleware() *Middleware { - v := middlewarePool.Get() - if v == nil { - panic(ErrTypeAssertionFailed.Error()) - } - m, ok := reflect.TypeAssert[*Middleware](reflect.ValueOf(v)) + m, ok := reflect.TypeAssert[*Middleware](reflect.ValueOf(middlewarePool.Get())) if !ok { panic(ErrTypeAssertionFailed.Error()) } return m }Or if you want to keep the nil check for extra safety, use a more descriptive error:
func acquireMiddleware() *Middleware { v := middlewarePool.Get() if v == nil { - panic(ErrTypeAssertionFailed.Error()) + panic("middleware pool returned nil - pool may be corrupted") }
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📒 Files selected for processing (15)
helpers.go(1 hunks)middleware/basicauth/basicauth.go(2 hunks)middleware/cache/heap.go(3 hunks)middleware/cache/manager.go(4 hunks)middleware/csrf/csrf.go(2 hunks)middleware/csrf/session_manager.go(2 hunks)middleware/keyauth/keyauth.go(2 hunks)middleware/logger/default_logger.go(3 hunks)middleware/logger/tags.go(3 hunks)middleware/requestid/requestid.go(2 hunks)middleware/session/data.go(2 hunks)middleware/session/middleware.go(3 hunks)middleware/session/session.go(3 hunks)middleware/session/store.go(3 hunks)req.go(2 hunks)
🧰 Additional context used
🧠 Learnings (6)
📚 Learning: 2024-10-02T23:02:12.306Z
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/session.go:46-61
Timestamp: 2024-10-02T23:02:12.306Z
Learning: In this codebase, the `sessionPool` only contains `Session` instances, so type assertions without additional checks are acceptable.
Applied to files:
helpers.gomiddleware/session/session.go
📚 Learning: 2024-10-08T19:06:06.583Z
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/session_manager.go:30-43
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the session middleware, `session.FromContext(c)` returns `*session.Middleware`, whereas `m.session.Get(c)` returns `*session.Store`, so they are not directly interchangeable.
Applied to files:
middleware/session/store.gomiddleware/session/session.gomiddleware/session/middleware.gomiddleware/csrf/session_manager.go
📚 Learning: 2024-10-08T19:06:06.583Z
Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/session.go:272-293
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the `middleware/session/session.go` file, the `saveSession()` method returns either `nil` or an error, so additional error wrapping in the `Save()` method is unnecessary.
Applied to files:
middleware/session/store.gomiddleware/session/session.go
📚 Learning: 2024-11-10T23:44:13.704Z
Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.
Applied to files:
middleware/csrf/csrf.gomiddleware/session/middleware.gomiddleware/requestid/requestid.go
📚 Learning: 2024-10-08T19:06:06.583Z
Learnt from: sixcolors
PR: gofiber/fiber#3051
File: middleware/session/session.go:215-216
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The `session.Save()` method in the `middleware/session` package returns the `Session` back to `sync.Pool`.
Applied to files:
middleware/session/session.go
📚 Learning: 2025-07-19T18:04:19.891Z
Learnt from: ReneWerner87
PR: gofiber/fiber#3598
File: docs/middleware/csrf.md:364-366
Timestamp: 2025-07-19T18:04:19.891Z
Learning: Both `*Session` and `*Middleware` in the session package have `Destroy()` methods with the signature `func Destroy() error` that take no arguments. The method is called directly on the session middleware instance without any parameters.
Applied to files:
middleware/session/session.go
🧬 Code graph analysis (9)
middleware/session/store.go (2)
req.go (1)
Locals(524-540)middleware/session/middleware.go (1)
Middleware(14-20)
middleware/basicauth/basicauth.go (1)
req.go (1)
Locals(524-540)
middleware/keyauth/keyauth.go (1)
req.go (1)
Locals(524-540)
middleware/csrf/csrf.go (2)
req.go (1)
Locals(524-540)ctx_interface_gen.go (1)
Ctx(17-414)
middleware/session/session.go (2)
req.go (1)
Locals(524-540)middleware/session/middleware.go (1)
Middleware(14-20)
middleware/session/middleware.go (1)
req.go (1)
Locals(524-540)
middleware/csrf/session_manager.go (1)
middleware/csrf/token.go (1)
Token(9-13)
middleware/requestid/requestid.go (1)
req.go (1)
Locals(524-540)
middleware/logger/tags.go (1)
req.go (1)
Locals(524-540)
🪛 GitHub Check: lint
helpers.go
[failure] 505-505:
directive //nolint:errcheck // only contains headerParams is unused for linter "errcheck" (nolintlint)
middleware/cache/heap.go
[failure] 45-45:
directive //nolint:errcheck // Forced type assertion is unused for linter "errcheck" (nolintlint)
[failure] 82-82:
directive //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface is unused for linter "errcheck" (nolintlint)
middleware/cache/manager.go
[failure] 58-58:
directive //nolint:errcheck // We store nothing else in the pool is unused for linter "errcheck" (nolintlint)
[failure] 96-96:
directive //nolint:errcheck // We store nothing else in the pool is unused for linter "errcheck" (nolintlint)
[failure] 111-111:
directive //nolint:errcheck // TODO: Handle error here is unused for linter "errcheck" (nolintlint)
🪛 GitHub Actions: golangci-lint
helpers.go
[error] 505-505: golangci-lint run: Directive //nolint:errcheck // only contains headerParams is unused for linter "errcheck" (nolintlint).
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (5)
- GitHub Check: unit (1.25.x, windows-latest)
- GitHub Check: Compare
- GitHub Check: unit (1.25.x, macos-latest)
- GitHub Check: unit (1.25.x, macos-13)
- GitHub Check: repeated
🔇 Additional comments (5)
middleware/csrf/session_manager.go (2)
4-4: Using reflect.TypeAssert requires Go 1.25. Align toolchain and CI.Importing
reflectto usereflect.TypeAssertrequires Go 1.25. Ensurego.modand CI use 1.25, or provide a pre-1.25 fallback if you must support older toolchains.
42-46: Nil-guarded cast looks good; behavior unchanged.The added nil checks before
reflect.TypeAssert[Token]avoid panics and preserve the prior semantics of returning no token when missing or wrong-typed.Also applies to: 53-55
req.go (1)
8-9: Go 1.25 dependency: reflect.TypeAssert.This import is solely for
reflect.TypeAssert(new in Go 1.25). Please bump the toolchain and CI to 1.25 as the PR summary indicates current jobs still use 1.24.middleware/session/session.go (1)
57-65: Apply learnings about sessionPool guaranteesAccording to the retrieved learnings, the
sessionPoolonly containsSessioninstances, so the defensive nil-check and reflect-based type assertion may be unnecessary overhead for this hot path.Based on the learning that states "In this codebase, the
sessionPoolonly containsSessioninstances, so type assertions without additional checks are acceptable", consider whether the added defensive checks are needed here. The original direct type assertion might be sufficient and more performant for this frequently called function.middleware/session/middleware.go (1)
184-193: Silent nil return behavior is consistent with other middlewareThe
FromContextimplementation inmiddleware/session/middleware.goreturnsnilwhen no value is found or when the stored value isn’t the expected type. This mirrors the behavior in bothmiddleware/requestid/requestid.goandmiddleware/keyauth/keyauth.go, which return an empty string on lookup failures rather than panicking . Given this consistency:
- There are no callers of
FromContextthat would unexpectedly panic under the current implementation.- All middleware in this package uniformly handle missing or mistyped context values by returning a zero value.
No changes are required.
| params, _ = reflect.TypeAssert[headerParams](reflect.ValueOf(headerParamPool.Get())) //nolint:errcheck // only contains headerParams | ||
| for k := range params { | ||
| delete(params, k) | ||
| } |
There was a problem hiding this comment.
Remove unused nolint directive and validate the cast result from sync.Pool.
reflect.TypeAssert returns (T, bool), not an error. The //nolint:errcheck directive is therefore ineffective and flagged by golangci-lint. Also, if the pool is ever misused, silently discarding ok obscures the issue.
Fix by checking ok and dropping the directive:
- params, _ = reflect.TypeAssert[headerParams](reflect.ValueOf(headerParamPool.Get())) //nolint:errcheck // only contains headerParams
+ v := headerParamPool.Get()
+ var ok bool
+ params, ok = reflect.TypeAssert[headerParams](reflect.ValueOf(v))
+ if !ok {
+ panic("headerParamPool: unexpected type from pool")
+ }📝 Committable suggestion
‼️ IMPORTANT
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.
| params, _ = reflect.TypeAssert[headerParams](reflect.ValueOf(headerParamPool.Get())) //nolint:errcheck // only contains headerParams | |
| for k := range params { | |
| delete(params, k) | |
| } | |
| v := headerParamPool.Get() | |
| var ok bool | |
| params, ok = reflect.TypeAssert[headerParams](reflect.ValueOf(v)) | |
| if !ok { | |
| panic("headerParamPool: unexpected type from pool") | |
| } | |
| for k := range params { | |
| delete(params, k) | |
| } |
🧰 Tools
🪛 GitHub Check: lint
[failure] 505-505:
directive //nolint:errcheck // only contains headerParams is unused for linter "errcheck" (nolintlint)
🪛 GitHub Actions: golangci-lint
[error] 505-505: golangci-lint run: Directive //nolint:errcheck // only contains headerParams is unused for linter "errcheck" (nolintlint).
🤖 Prompt for AI Agents
In helpers.go around lines 505 to 508, remove the incorrect "//nolint:errcheck"
and validate the second return value from reflect.TypeAssert: assign both values
(params, ok := ...) and handle the case where ok is false (e.g., log/panic or
return a zeroed headerParams/fallback) instead of ignoring it; ensure you still
clear the map when ok is true.
| import ( | ||
| "container/heap" | ||
| "reflect" | ||
| ) |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Drop reflect import after removing TypeAssert usage
import (
"container/heap"
- "reflect"
)📝 Committable suggestion
‼️ IMPORTANT
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.
| import ( | |
| "container/heap" | |
| "reflect" | |
| ) | |
| import ( | |
| "container/heap" | |
| ) |
🤖 Prompt for AI Agents
In middleware/cache/heap.go around lines 3 to 6, the reflect package import is
now unused after removing TypeAssert usage; remove "reflect" from the import
block (and run gofmt/golangci-lint) so the file no longer imports an unused
package.
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion | ||
| h.pushInternal(entry) | ||
| } |
There was a problem hiding this comment.
Compile error and behavior change: invalid API and silently ignored assertion
- reflect.TypeAssert doesn’t exist (build break).
- Ignoring the assertion result changes semantics: the previous x.(heapEntry) would panic on an invalid type, while this code quietly pushes a zero-value heapEntry, corrupting the heap.
Restore panic-on-wrong-type and remove the bogus nolint.
-func (h *indexedHeap) Push(x any) {
- entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion
- h.pushInternal(entry)
-}
+func (h *indexedHeap) Push(x any) {
+ entry, ok := x.(heapEntry)
+ if !ok {
+ panic("cache: indexedHeap.Push received non-heapEntry element")
+ }
+ h.pushInternal(entry)
+}📝 Committable suggestion
‼️ IMPORTANT
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.
| entry, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(x)) //nolint:errcheck // Forced type assertion | |
| h.pushInternal(entry) | |
| } | |
| func (h *indexedHeap) Push(x any) { | |
| entry, ok := x.(heapEntry) | |
| if !ok { | |
| panic("cache: indexedHeap.Push received non-heapEntry element") | |
| } | |
| h.pushInternal(entry) | |
| } |
🧰 Tools
🪛 GitHub Check: lint
[failure] 45-45:
directive //nolint:errcheck // Forced type assertion is unused for linter "errcheck" (nolintlint)
🤖 Prompt for AI Agents
In middleware/cache/heap.go around lines 45 to 47, the code uses a non-existent
reflect.TypeAssert and ignores the assertion error, which breaks the build and
silently pushes a zero-value on bad types; replace the bogus call with a real
type assertion that panics on mismatch (use entry := x.(heapEntry)) and remove
the //nolint:errcheck comment so the code fails fast on wrong types, preserving
the original semantics.
| func (h *indexedHeap) removeInternal(realIdx int) (string, uint) { | ||
| x := heap.Remove(h, realIdx).(heapEntry) //nolint:forcetypeassert,errcheck // Forced type assertion required to implement the heap.Interface interface | ||
| x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface | ||
| return x.key, x.bytes | ||
| } |
There was a problem hiding this comment.
Same issues in removeInternal: invalid API; preserve original semantics
heap.Remove returns any; original code used a forced assertion that would panic if the contract is violated. Keep that behavior; remove unused nolint.
-func (h *indexedHeap) removeInternal(realIdx int) (string, uint) {
- x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface
- return x.key, x.bytes
-}
+func (h *indexedHeap) removeInternal(realIdx int) (string, uint) {
+ x := heap.Remove(h, realIdx).(heapEntry)
+ return x.key, x.bytes
+}📝 Committable suggestion
‼️ IMPORTANT
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.
| func (h *indexedHeap) removeInternal(realIdx int) (string, uint) { | |
| x := heap.Remove(h, realIdx).(heapEntry) //nolint:forcetypeassert,errcheck // Forced type assertion required to implement the heap.Interface interface | |
| x, _ := reflect.TypeAssert[heapEntry](reflect.ValueOf(heap.Remove(h, realIdx))) //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface | |
| return x.key, x.bytes | |
| } | |
| func (h *indexedHeap) removeInternal(realIdx int) (string, uint) { | |
| x := heap.Remove(h, realIdx).(heapEntry) | |
| return x.key, x.bytes | |
| } |
🧰 Tools
🪛 GitHub Check: lint
[failure] 82-82:
directive //nolint:errcheck // Forced type assertion required to implement the heap.Interface interface is unused for linter "errcheck" (nolintlint)
🤖 Prompt for AI Agents
In middleware/cache/heap.go around lines 81 to 84, the current code uses an
invalid reflect.TypeAssert API and suppresses errors with a nolint; restore the
original forced type assertion semantics by calling heap.Remove(h, realIdx) and
performing a direct type assertion to heapEntry (e.g. v := heap.Remove(h,
realIdx).(heapEntry)) so it will panic if the contract is violated, then return
v.key and v.bytes; remove the unused nolint comment.
| import ( | ||
| "context" | ||
| "reflect" | ||
| "sync" | ||
| "time" |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Remove unused reflect import after fixing assertions
import (
"context"
- "reflect"
"sync"
"time"📝 Committable suggestion
‼️ IMPORTANT
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.
| import ( | |
| "context" | |
| "reflect" | |
| "sync" | |
| "time" | |
| import ( | |
| "context" | |
| "sync" | |
| "time" | |
| ) |
🤖 Prompt for AI Agents
In middleware/cache/manager.go around lines 3 to 7, the import block still
includes "reflect" but the related assertions were removed, leaving an unused
import; delete "reflect" from the import list (or run go fmt/goimports to clean
up imports) so the package builds without unused-import errors.
| v := c.Locals(tokenKey) | ||
| if v == nil { | ||
| return "" | ||
| } | ||
| return token | ||
| if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { | ||
| return token | ||
| } | ||
| return "" | ||
| } |
There was a problem hiding this comment.
Blocking: reflect.TypeAssert is not a real API; this code won’t compile
Go’s standard library has no reflect.TypeAssert function (in 1.24, 1.25, or earlier). This will fail to build. Use a regular type assertion with the comma-ok idiom.
Apply:
-func TokenFromContext(c fiber.Ctx) string {
- v := c.Locals(tokenKey)
- if v == nil {
- return ""
- }
- if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok {
- return token
- }
- return ""
-}
+func TokenFromContext(c fiber.Ctx) string {
+ raw := c.Locals(tokenKey)
+ if s, ok := raw.(string); ok {
+ return s
+ }
+ return ""
+}Also remove the now-unused reflect import (see separate comment).
📝 Committable suggestion
‼️ IMPORTANT
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.
| v := c.Locals(tokenKey) | |
| if v == nil { | |
| return "" | |
| } | |
| return token | |
| if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { | |
| return token | |
| } | |
| return "" | |
| } | |
| func TokenFromContext(c fiber.Ctx) string { | |
| raw := c.Locals(tokenKey) | |
| if s, ok := raw.(string); ok { | |
| return s | |
| } | |
| return "" | |
| } |
🤖 Prompt for AI Agents
In middleware/csrf/csrf.go around lines 195 to 203, the code uses a non-existent
reflect.TypeAssert API which prevents compilation; replace that with a normal Go
type assertion using the comma-ok idiom (e.g., token, ok := v.(string)) to
extract the string and return it, falling back to "" when not ok or nil, and
remove the now-unused "reflect" import from the file.
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "reflect" | ||
|
|
||
| "github.com/gofiber/fiber/v3" | ||
| ) |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Remove unused reflect import after fixing TokenFromContext
Once you switch to a normal type assertion, “reflect” is unused.
import (
"errors"
"fmt"
- "reflect"
"github.com/gofiber/fiber/v3"
)📝 Committable suggestion
‼️ IMPORTANT
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.
| import ( | |
| "errors" | |
| "fmt" | |
| "reflect" | |
| "github.com/gofiber/fiber/v3" | |
| ) | |
| import ( | |
| "errors" | |
| "fmt" | |
| "github.com/gofiber/fiber/v3" | |
| ) |
🤖 Prompt for AI Agents
In middleware/keyauth/keyauth.go around lines 3 to 9, after you change
TokenFromContext to use a normal type assertion the reflect package becomes
unused; remove "reflect" from the import list and run go fmt / go vet to ensure
imports are cleaned up and there are no unused-import compile errors.
| v := c.Locals(tokenKey) | ||
| if v == nil { | ||
| return "" | ||
| } | ||
| return token | ||
| if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { | ||
| return token | ||
| } | ||
| return "" | ||
| } |
There was a problem hiding this comment.
Blocking: reflect.TypeAssert is undefined; use a standard type assertion
This won’t compile. Replace with the comma-ok assertion. Also drop the nil check on v because the comma-ok form is already safe.
-func TokenFromContext(c fiber.Ctx) string {
- v := c.Locals(tokenKey)
- if v == nil {
- return ""
- }
- if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok {
- return token
- }
- return ""
-}
+func TokenFromContext(c fiber.Ctx) string {
+ if s, ok := c.Locals(tokenKey).(string); ok {
+ return s
+ }
+ return ""
+}📝 Committable suggestion
‼️ IMPORTANT
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.
| v := c.Locals(tokenKey) | |
| if v == nil { | |
| return "" | |
| } | |
| return token | |
| if token, ok := reflect.TypeAssert[string](reflect.ValueOf(v)); ok { | |
| return token | |
| } | |
| return "" | |
| } | |
| func TokenFromContext(c fiber.Ctx) string { | |
| if s, ok := c.Locals(tokenKey).(string); ok { | |
| return s | |
| } | |
| return "" | |
| } |
🤖 Prompt for AI Agents
In middleware/keyauth/keyauth.go around lines 61 to 69, the code uses a
nonexistent reflect.TypeAssert and an unnecessary nil check; replace that with a
standard comma-ok type assertion: attempt to assert c.Locals(tokenKey) to a
string using v, ok := c.Locals(tokenKey).(string) (no prior nil check), return
token when ok is true and return the empty string otherwise.
| ts, _ := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load())) | ||
| buf.WriteString( | ||
| fmt.Sprintf("%s |%s %3d %s| %13v | %15s |%s %-7s %s| %-"+data.ErrPaddingStr+"s %s\n", | ||
| data.Timestamp.Load().(string), //nolint:forcetypeassert,errcheck // Timestamp is always a string | ||
| ts, | ||
| statusColor(c.Response().StatusCode(), colors), c.Response().StatusCode(), colors.Reset, |
There was a problem hiding this comment.
Compile error: reflect.TypeAssert is undefined; replace with comma-ok
Use a standard type assertion. If you want a non-string fallback, consider fmt.Sprint for resilience (see next comment).
- ts, _ := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load()))
+ ts, _ := data.Timestamp.Load().(string)📝 Committable suggestion
‼️ IMPORTANT
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.
| ts, _ := reflect.TypeAssert[string](reflect.ValueOf(data.Timestamp.Load())) | |
| buf.WriteString( | |
| fmt.Sprintf("%s |%s %3d %s| %13v | %15s |%s %-7s %s| %-"+data.ErrPaddingStr+"s %s\n", | |
| data.Timestamp.Load().(string), //nolint:forcetypeassert,errcheck // Timestamp is always a string | |
| ts, | |
| statusColor(c.Response().StatusCode(), colors), c.Response().StatusCode(), colors.Reset, | |
| ts, _ := data.Timestamp.Load().(string) | |
| buf.WriteString( | |
| fmt.Sprintf("%s |%s %3d %s| %13v | %15s |%s %-7s %s| %-"+data.ErrPaddingStr+"s %s\n", | |
| ts, | |
| statusColor(c.Response().StatusCode(), colors), c.Response().StatusCode(), colors.Reset, |
🤖 Prompt for AI Agents
In middleware/logger/default_logger.go around lines 39 to 43, the code uses a
nonexistent reflect.TypeAssert; replace it with a standard type assertion using
the comma-ok form to extract the string from data.Timestamp.Load(), e.g. v, ok
:= data.Timestamp.Load().(string), and if not ok fall back to a safe string
representation such as fmt.Sprint(data.Timestamp.Load()) so ts is always a
string before being written to the buffer. Ensure you import fmt if not already
imported.
| obj := sessionPool.Get() | ||
| if obj == nil { | ||
| panic("unexpected type in session pool") | ||
| } | ||
| s, ok := reflect.TypeAssert[*Session](reflect.ValueOf(obj)) | ||
| if !ok { | ||
| panic("unexpected type in session pool") | ||
| } | ||
| if s.data == nil { |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Duplicate panic messages reduce debuggability
Similar to the data.go file, having identical panic messages for nil vs type assertion failures makes debugging harder.
Use distinct panic messages:
func acquireSession() *Session {
obj := sessionPool.Get()
if obj == nil {
- panic("unexpected type in session pool")
+ panic("session pool returned nil")
}
s, ok := reflect.TypeAssert[*Session](reflect.ValueOf(obj))
if !ok {
panic("unexpected type in session pool")
}📝 Committable suggestion
‼️ IMPORTANT
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.
| obj := sessionPool.Get() | |
| if obj == nil { | |
| panic("unexpected type in session pool") | |
| } | |
| s, ok := reflect.TypeAssert[*Session](reflect.ValueOf(obj)) | |
| if !ok { | |
| panic("unexpected type in session pool") | |
| } | |
| if s.data == nil { | |
| func acquireSession() *Session { | |
| obj := sessionPool.Get() | |
| if obj == nil { | |
| panic("session pool returned nil") | |
| } | |
| s, ok := reflect.TypeAssert[*Session](reflect.ValueOf(obj)) | |
| if !ok { | |
| panic("unexpected type in session pool") | |
| } | |
| if s.data == nil { | |
| // ... | |
| } | |
| // ... | |
| } |
🤖 Prompt for AI Agents
In middleware/session/session.go around lines 57 to 65, the panic messages for a
nil pool entry and a failed type assertion are identical which hurts debugging;
change them to distinct, descriptive messages (e.g., "session pool returned nil
object" for obj == nil and "session pool returned non-*Session type" for the
type assertion failure), matching the style used in data.go so it's clear which
check failed.
Summary
reflect.TypeAssertin middleware, request helpers, and logging utilitiesreflect.TypeAssertTesting
make audit(fails: EncodeMsg passes lock by value)make generatemake betteralign(fails: package requires newer Go version go1.25 (application built with go1.24))make modernize(fails: package requires newer Go version go1.25 (application built with go1.24))make formatmake test(fails: Test_SendFile_withRoutes)https://chatgpt.com/codex/tasks/task_e_68a6f87e83048326918e6f33385ba1cf