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request.go
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request.go
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package hermes
import (
"bytes"
"context"
"encoding/json"
"sync"
"github.com/valyala/fasthttp"
)
var requestPool = &sync.Pool{
New: func() interface{} {
return &BaseRequest{
validParams: make([]string, 0, 10),
params: make([][]byte, 0, 10),
}
},
}
type BaseRequest struct {
ctx context.Context
r *fasthttp.RequestCtx
validParams []string
params [][]byte
}
func AcquireRequest(ctx context.Context, r *fasthttp.RequestCtx) *BaseRequest {
req := requestPool.Get().(*BaseRequest)
req.r = r
req.ctx = ctx
return req
}
func ReleaseRequest(req *BaseRequest) {
req.reset()
requestPool.Put(req)
}
func (req *BaseRequest) reset() {
req.r = nil
req.ctx = nil
req.validParams = req.validParams[:0]
req.params = req.params[:0]
}
func (req *BaseRequest) Raw() *fasthttp.RequestCtx {
return req.r
}
func (req *BaseRequest) Path() []byte {
return req.r.Path()
}
func (req *BaseRequest) Method() []byte {
return req.r.Method()
}
func (req *BaseRequest) URI() *fasthttp.URI {
return req.r.URI()
}
func (req *BaseRequest) Header(name string) []byte {
return req.r.Request.Header.Peek(name)
}
func (req *BaseRequest) Host() []byte {
return req.r.Host()
}
func (req *BaseRequest) Param(name string) string {
// req.params is not safe, since its reused over requests
// but validParams is, so we check if name is one of the
// valid params, before actually return the value
for i, p := range req.validParams {
if p == name {
return string(req.params[i])
}
}
return ""
}
func (req *BaseRequest) Query(name string) []byte {
return req.r.QueryArgs().Peek(name)
}
func (req *BaseRequest) QueryMulti(name string) [][]byte {
return req.r.QueryArgs().PeekMulti(name)
}
func (req *BaseRequest) Data(dst interface{}) error {
return json.Unmarshal(req.r.PostBody(), dst)
}
func (req *BaseRequest) Post(name string) []byte {
return req.r.PostArgs().Peek(name)
}
func (req *BaseRequest) PostMulti(name string) [][]byte {
return req.r.PostArgs().PeekMulti(name)
}
func (req *BaseRequest) Cookie(name string) []byte {
return req.r.Request.Header.Cookie(name)
}
func (req *BaseRequest) Context() context.Context {
return req.ctx
}
func (req *BaseRequest) WithContext(ctx context.Context) Request {
req.ctx = ctx
return req
}
func (req *BaseRequest) IsJSON() bool {
ct := req.r.Request.Header.ContentType()
laj := len(applicationJSON)
return bytes.Equal(ct, applicationJSON) ||
((laj < len(ct)) && bytes.Equal(ct[:laj], applicationJSON) && (ct[laj] == ';'))
}
func (req *BaseRequest) WantsJSON() bool {
accept := req.r.Request.Header.Peek("Accept")
laj := len(applicationJSON)
return bytes.Equal(accept, applicationJSON) ||
((laj < len(accept)) && bytes.Equal(accept[:laj], applicationJSON))
}