/
timeout.go
96 lines (83 loc) · 1.93 KB
/
timeout.go
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package builtin
import (
"time"
"github.com/zalando/skipper/filters"
)
type timeoutType int
const (
backendTimeout timeoutType = iota + 1
readTimeout
writeTimeout
)
type timeout struct {
typ timeoutType
timeout time.Duration
}
func NewBackendTimeout() filters.Spec {
return &timeout{
typ: backendTimeout,
}
}
func NewReadTimeout() filters.Spec {
return &timeout{
typ: readTimeout,
}
}
func NewWriteTimeout() filters.Spec {
return &timeout{
typ: writeTimeout,
}
}
func (t *timeout) Name() string {
switch t.typ {
case backendTimeout:
return filters.BackendTimeoutName
case readTimeout:
return filters.ReadTimeoutName
case writeTimeout:
return filters.WriteTimeoutName
}
return "unknownFilter"
}
func (t *timeout) CreateFilter(args []interface{}) (filters.Filter, error) {
if len(args) != 1 {
return nil, filters.ErrInvalidFilterParameters
}
var tf timeout
tf.typ = t.typ
switch v := args[0].(type) {
case string:
d, err := time.ParseDuration(v)
if err != nil {
return nil, err
}
tf.timeout = d
case time.Duration:
tf.timeout = v
default:
return nil, filters.ErrInvalidFilterParameters
}
return &tf, nil
}
// Request allows overwrite of timeout settings.
//
// Type backend timeout sets the timeout for the backend roundtrip.
//
// Type read timeout sets the timeout to read the request including the body.
// It uses http.ResponseController to SetReadDeadline().
//
// Type write timeout allows to set a timeout for writing the response.
// It uses http.ResponseController to SetWriteDeadline().
//
// All these timeouts are set at specific points in proxy.Proxy.
func (t *timeout) Request(ctx filters.FilterContext) {
switch t.typ {
case backendTimeout:
ctx.StateBag()[filters.BackendTimeout] = t.timeout
case readTimeout:
ctx.StateBag()[filters.ReadTimeout] = t.timeout
case writeTimeout:
ctx.StateBag()[filters.WriteTimeout] = t.timeout
}
}
func (*timeout) Response(filters.FilterContext) {}