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response.go
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response.go
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package httpclient
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"time"
)
type HTTPResponse interface {
GetStatusCode() int
SetResult(responseBody any) error
CatchError() error
Catch(errorObject any) error
IsSuccess() bool
GetTraceInfo() HttpTraceInfo
GetUrl() string
GetMethod() string
GetHeaders() http.Header
GetBody() []byte
GetCookies() []*http.Cookie
GetElapsedTime() time.Duration
CURL() string
CleanUp()
}
func (r *_HttpRequest) GetStatusCode() int { return r.statusCode }
func (r *_HttpRequest) SetResult(responseBody any) error {
if r.err != nil {
return r.err
}
defer r.CleanUp()
return json.Unmarshal(r.resBody, responseBody)
}
func (r *_HttpRequest) CatchError() error {
if r.err != nil {
return r.err
}
if r.statusCode > 299 || r.statusCode < 200 {
return fmt.Errorf("request failed with status code %d", r.statusCode)
}
return nil
}
func (r *_HttpRequest) Catch(
errorObject any,
) error {
defer r.CleanUp()
return json.Unmarshal(r.resBody, errorObject)
}
func (r *_HttpRequest) IsSuccess() bool {
return r.statusCode >= 200 && r.statusCode < 300 && r.err == nil
}
// RUN REQUEST
func (r *_HttpRequest) afterRequest() {
r.withLock = false
r.lock.Unlock()
r.traces.endTime = time.Now()
}
func (r *_HttpRequest) doRequest() HTTPResponse {
if r.withLock {
defer r.afterRequest()
}
if r.err != nil {
return r
}
var req *http.Request
if r.body != nil {
req, r.err = http.NewRequest(r.method, r.url, bytes.NewBuffer(r.body))
} else {
req, r.err = http.NewRequest(r.method, r.url, nil)
}
req = req.WithContext(r.traces.CreateContext(r.ctx))
req.Header = r.headers
for _, cookie := range r.Cookies {
req.AddCookie(cookie)
}
r.startTime = time.Now()
r.response, r.err = r.client.Do(req)
endTime := time.Now()
for i := range r.httpHooks.After {
r.httpHooks.After[i](req, r.response, HTTPMetadata{
StartTime: r.startTime,
EndTime: endTime,
}, r.err)
}
if r.err != nil {
r.statusCode = -1
return r
}
r.statusCode = r.response.StatusCode
r.resBody, r.err = io.ReadAll(r.response.Body)
if r.err != nil {
return r
}
r.response.Body.Close()
return r
}
func (r *_HttpRequest) GetTraceInfo() HttpTraceInfo {
endTime := r.traces.endTime
if endTime.IsZero() {
endTime = time.Now()
}
ti := HttpTraceInfo{
IsConnReused: r.traces.gotConnInfo.Reused,
IsConnWasIdle: r.traces.gotConnInfo.WasIdle,
ConnIdleTime: r.traces.gotConnInfo.IdleTime,
}
if !r.traces.tlsHandshakeStart.IsZero() && !r.traces.tlsHandshakeDone.IsZero() {
ti.TLSHandshakeTime = r.traces.tlsHandshakeDone.Sub(r.traces.tlsHandshakeStart)
} else {
ti.TLSHandshakeTime = endTime.Sub(r.traces.tlsHandshakeStart)
}
ti.TotalTime = endTime.Sub(r.traces.getConn)
dnsDone := r.traces.dnsDone
if dnsDone.IsZero() {
dnsDone = endTime
}
if !r.traces.dnsStart.IsZero() {
ti.DNSLookupTime = dnsDone.Sub(r.traces.dnsStart)
}
// Only calculate on successful conner.traces.ons
if !r.traces.connectDone.IsZero() {
ti.TCPConnectTime = r.traces.connectDone.Sub(dnsDone)
}
// Only calculate on successful conner.traces.ons
if !r.traces.gotConn.IsZero() {
ti.ConnectTime = r.traces.gotConn.Sub(r.traces.getConn)
}
// Only calculate on successful conner.traces.ons
if !r.traces.gotFirstResponseByte.IsZero() {
ti.FirstResponseTime = r.traces.gotFirstResponseByte.Sub(r.traces.gotConn)
ti.ResponseTime = endTime.Sub(r.traces.gotFirstResponseByte)
}
// Capture remote address info when conner.traces.on is non-nil
if r.traces.gotConnInfo.Conn != nil {
ti.RemoteAddr = r.traces.gotConnInfo.Conn.RemoteAddr()
}
return ti
}
func (r *_HttpRequest) GetUrl() string { return r.url }
func (r *_HttpRequest) GetMethod() string { return r.method }
func (r *_HttpRequest) GetHeaders() http.Header { return r.headers }
func (r *_HttpRequest) GetBody() []byte { return r.resBody }
func (r *_HttpRequest) GetCookies() []*http.Cookie { return r.Cookies }
func (r *_HttpRequest) GetElapsedTime() time.Duration { return r.traces.endTime.Sub(r.startTime) }
func (r *_HttpRequest) CURL() string {
builder := strings.Builder{}
builder.WriteString("curl -X ")
builder.WriteString(r.method)
builder.WriteString(" '")
builder.WriteString(r.url)
builder.WriteString("'")
for k, v := range r.headers {
builder.WriteString(" -H '")
builder.WriteString(k)
builder.WriteString(": ")
builder.WriteString(v[0])
builder.WriteString("'")
}
if r.body != nil {
builder.WriteString(" -d '")
b := string(r.body)
builder.WriteString(b)
builder.WriteString("'")
}
return builder.String()
}
// CleanUp cleans up the request object
func (r *_HttpRequest) CleanUp() {
if r.response != nil && r.response.Body != nil {
r.response.Body.Close()
}
r.client.CloseIdleConnections()
r.resBody = nil
r.response = nil
r.err = nil
r.statusCode = 0
r.startTime = time.Time{}
r.headers = http.Header{}
r.Cookies = nil
r.body = nil
r.url = ""
r.method = ""
r.withLock = false
r.ctx = nil
r.httpHooks = nil
}