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12 changes: 2 additions & 10 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -6,17 +6,9 @@

# Timeout

> [!NOTE]
> This repository has been transferred from `github.com/tigerwill90/foxtimeout` to `github.com/fox-toolkit/timeout`.
> Existing users should update their imports and `go.mod` accordingly.

Timeout is a middleware for [Fox](https://github.com/fox-toolkit/fox) which ensure that a handler do not exceed the
Timeout is a middleware for [Fox](https://github.com/fox-toolkit/fox) which ensures that a handler does not exceed the
configured timeout limit.

## Disclaimer
Timeout's API is closely tied to the Fox router, and it will only reach v1 when the router is stabilized.
During the pre-v1 phase, breaking changes may occur and will be documented in the release notes.

## Getting started
### Installation

Expand All @@ -26,7 +18,7 @@ go get -u github.com/fox-toolkit/timeout
### Feature
- Allows for custom timeout response to better suit specific use cases.
- Tightly integrates with the Fox ecosystem for enhanced performance and scalability.
- Supports dynamic timeout configuration on a per-route & per-request basis using custom `Resolver`.
- Supports per-route overrides of the handler timeout and of the connection read/write deadlines.

### Usage
````go
Expand Down
2 changes: 2 additions & 0 deletions annotation.go
Original file line number Diff line number Diff line change
Expand Up @@ -27,12 +27,14 @@ func OverrideHandler(dt time.Duration) fox.RouteOption {

// OverrideRead returns a RouteOption that sets the read deadline for the underlying connection.
// This controls how long the server will wait before timing out while reading the request body.
// Passing a value <= 0 (or None) clears the read deadline for this route.
func OverrideRead(dt time.Duration) fox.RouteOption {
return fox.WithAnnotation(rKey{}, dt)
}

// OverrideWrite returns a RouteOption that sets the write deadline for the underlying connection.
// This controls how long the server will wait before timing out writes to the client.
// Passing a value <= 0 (or None) clears the write deadline for this route.
func OverrideWrite(dt time.Duration) fox.RouteOption {
return fox.WithAnnotation(wKey{}, dt)
}
Expand Down
6 changes: 1 addition & 5 deletions go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -3,17 +3,13 @@ module github.com/fox-toolkit/timeout
go 1.26.0

require (
github.com/fox-toolkit/fox v0.33.0
github.com/fox-toolkit/fox v1.0.0
github.com/stretchr/testify v1.12.1
)

require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
go.yaml.in/yaml/v3 v3.0.5 // indirect
golang.org/x/net v0.61.0 // indirect
golang.org/x/sys v0.49.0 // indirect
golang.org/x/text v0.43.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)
31 changes: 2 additions & 29 deletions go.sum
Original file line number Diff line number Diff line change
@@ -1,39 +1,12 @@
github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/fox-toolkit/fox v0.32.0 h1:Idx/fSK9c8wjhJMz5Vr7H4VRS6t5YbKldAJIxRnQWrk=
github.com/fox-toolkit/fox v0.32.0/go.mod h1:e5eQE028uqYvvoBAmfIvkH4qN+OZj98h7pwHti99c3w=
github.com/fox-toolkit/fox v0.33.0 h1:1GTggw1DzrHhdnjiQF0nYrQVPtDtmWorU4/ucRv3FIo=
github.com/fox-toolkit/fox v0.33.0/go.mod h1:IWpK0++VvaNyc8Gts1Zjefow7WymGiY258wC+yY7Xg4=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/fox-toolkit/fox v1.0.0 h1:Z8Yus2t3xRWk7rT4aSuYkOeG72k53KgwdFb1RcuWrLc=
github.com/fox-toolkit/fox v1.0.0/go.mod h1:IWpK0++VvaNyc8Gts1Zjefow7WymGiY258wC+yY7Xg4=
github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
golang.org/x/net v0.57.0 h1:K5+3DljvIuDG9/Jv9rvyMywYNFCQ9RSUY6OOTTkT+tE=
golang.org/x/net v0.57.0/go.mod h1:KpXc8iv+r3XplLAG/f7Jsf9RPszJzdR0f58q9vGOuEU=
golang.org/x/net v0.61.0 h1:RR+6j/BTBCrggOLugxa+66R8FvoN6MHlzDlZIbN9YFw=
golang.org/x/net v0.61.0/go.mod h1:WgDCOTH8iwtB66T4/GfI94AHo/hhdb7Hah9NDseQfiI=
golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/sys v0.49.0 h1:XbzkgYJHdqh/8m2Uu0W/dQv8nktxx4BFHp1M0gROTXA=
golang.org/x/sys v0.49.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
golang.org/x/text v0.40.0 h1:Ub2Z6/xjgF1WrYQz2nuITOEegKFtiIy+rieRJ5lHZKs=
golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
golang.org/x/text v0.43.0 h1:1QivrlhwAsnMOcqgOdl9my7s9OyZl8O5/UGUTJVXoWc=
golang.org/x/text v0.43.0/go.mod h1:hbSIYA/amXcRXTFSZqh8tWHEoqRvvbKPJ2uz/KU+a+s=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
30 changes: 19 additions & 11 deletions timeout.go
Original file line number Diff line number Diff line change
Expand Up @@ -30,17 +30,17 @@ var (
}
)

// Timeout is a middleware that ensure HTTP handlers don't exceed the configured timeout duration.
type Timeout struct {
// middleware ensures HTTP handlers don't exceed the configured timeout duration.
type middleware struct {
cfg *config
dt time.Duration
}

// Middleware returns a [fox.MiddlewareFunc] that runs handlers with the given time limit.
//
// The middleware calls the next handler to handle each request, but if a call runs for longer than its time limit,
// the handler responds with a 503 Service Unavailable error and the given message in its body (if a custom response
// handler is not configured). After such a timeout, writes by the handler to its ResponseWriter will return [http.ErrHandlerTimeout].
// the handler responds with a 503 Service Unavailable error (see [DefaultResponse]). After such a timeout, writes by the
// handler to its ResponseWriter will return [http.ErrHandlerTimeout].
//
// The timeout middleware supports the [http.Pusher] interface but does not support the [http.Hijacker] or [http.Flusher] interfaces.
//
Expand All @@ -51,20 +51,20 @@ func Middleware(dt time.Duration, opts ...Option) fox.MiddlewareFunc {
return create(dt, opts...).run
}

func create(dt time.Duration, opts ...Option) *Timeout {
func create(dt time.Duration, opts ...Option) *middleware {
cfg := defaultConfig()
for _, opt := range opts {
opt.apply(cfg)
}

return &Timeout{
return &middleware{
dt: dt,
cfg: cfg,
}
}

// run is the internal handler that applies the timeout logic.
func (t *Timeout) run(next fox.HandlerFunc) fox.HandlerFunc {
func (t *middleware) run(next fox.HandlerFunc) fox.HandlerFunc {
return func(c *fox.Context) {
t.setDeadline(c)
dt := t.resolveTimeout(c)
Expand Down Expand Up @@ -130,24 +130,32 @@ func (t *Timeout) run(next fox.HandlerFunc) fox.HandlerFunc {
}
}

func (t *Timeout) resolveTimeout(c *fox.Context) time.Duration {
func (t *middleware) resolveTimeout(c *fox.Context) time.Duration {
if dt, ok := unwrapRouteTimeout(c.Route(), hKey{}); ok {
return dt
}
return t.dt
}

func (t *Timeout) setDeadline(c *fox.Context) {
func (t *middleware) setDeadline(c *fox.Context) {
// Errors are intentionally ignored: the underlying connection may not support deadlines
// (e.g., http.ErrNotSupported), and there's no actionable recovery in this context.
if dt, ok := unwrapRouteTimeout(c.Route(), rKey{}); ok {
_ = c.Writer().SetReadDeadline(time.Now().Add(dt))
_ = c.Writer().SetReadDeadline(deadline(dt))
}
if dt, ok := unwrapRouteTimeout(c.Route(), wKey{}); ok {
_ = c.Writer().SetWriteDeadline(time.Now().Add(dt))
_ = c.Writer().SetWriteDeadline(deadline(dt))
}
}

// deadline returns the absolute deadline for dt, or the zero time (no deadline) if dt <= 0.
func deadline(dt time.Duration) time.Time {
if dt <= 0 {
return time.Time{}
}
return time.Now().Add(dt)
}

func checkWriteHeaderCode(code int) {
if code < 100 || code > 999 {
panic(fmt.Sprintf("invalid status code %d", code))
Expand Down
62 changes: 62 additions & 0 deletions timeout_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -269,6 +269,68 @@ func TestMiddleware_WithWriteTimeout(t *testing.T) {
assert.Less(t, n, int64(10*1024*1024))
}

func TestMiddleware_WithReadTimeoutNone(t *testing.T) {
f, err := fox.NewRouter(fox.WithMiddleware(Middleware(None)))
require.NoError(t, err)

f.MustAdd(fox.MethodPost, "/foo", func(c *fox.Context) {
body, err := io.ReadAll(c.Request().Body)
if err != nil {
http.Error(c.Writer(), err.Error(), http.StatusRequestTimeout)
return
}
_, _ = c.Writer().Write(body)
}, OverrideRead(None))

srv := httptest.NewUnstartedServer(f)
srv.Config.ReadTimeout = 50 * time.Millisecond
srv.Start()
defer srv.Close()

pr, pw := io.Pipe()
go func() {
// Slow writer: sends data after the server read timeout, which the route clears
time.Sleep(200 * time.Millisecond)
_, _ = pw.Write([]byte("hello"))
pw.Close()
}()

req, err := http.NewRequest(http.MethodPost, srv.URL+"/foo", pr)
require.NoError(t, err)

resp, err := http.DefaultClient.Do(req)
require.NoError(t, err)
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, resp.StatusCode)
assert.Equal(t, "hello", string(body))
}

func TestMiddleware_WithWriteTimeoutNone(t *testing.T) {
f, err := fox.NewRouter(fox.WithMiddleware(Middleware(None)))
require.NoError(t, err)

f.MustAdd(fox.MethodGet, "/foo", func(c *fox.Context) {
// Exceed the server write timeout, which the route clears
time.Sleep(200 * time.Millisecond)
_, _ = c.Writer().Write([]byte("hello"))
}, OverrideWrite(None))

srv := httptest.NewUnstartedServer(f)
srv.Config.WriteTimeout = 50 * time.Millisecond
srv.Start()
defer srv.Close()

resp, err := http.Get(srv.URL + "/foo")
require.NoError(t, err)
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, resp.StatusCode)
assert.Equal(t, "hello", string(body))
}

func ExampleOverrideHandler() {
f, err := fox.NewRouter(
fox.WithMiddleware(Middleware(2 * time.Second)),
Expand Down
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