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package sls
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"net/url"
"strconv"
"time"
"github.com/denverdino/aliyungo/util"
)
type request struct {
endpoint string
method string
path string
contentType string
params map[string]string
headers map[string]string
payload []byte
}
func (req *request) url() string {
params := &url.Values{}
if req.params != nil {
for k, v := range req.params {
params.Set(k, v)
}
}
u := url.URL{
Scheme: "http",
Host: req.endpoint,
Path: req.path,
RawQuery: params.Encode(),
}
return u.String()
}
func (client *Client) doRequest(req *request) (*http.Response, error) {
payload := req.payload
if req.headers == nil {
req.headers = make(map[string]string)
}
if req.endpoint == "" {
req.endpoint = client.endpoint
}
contentLength := "0"
if payload != nil {
contentLength = strconv.Itoa(len(payload))
}
req.headers["Content-Type"] = req.contentType
req.headers["Content-Length"] = contentLength
req.headers["x-log-bodyrawsize"] = contentLength
req.headers["Date"] = util.GetGMTime()
req.headers["Host"] = req.endpoint
req.headers["x-log-apiversion"] = client.version
req.headers["x-log-signaturemethod"] = "hmac-sha1"
if client.securityToken != "" {
req.headers["x-acs-security-token"] = client.securityToken
}
client.signRequest(req, payload)
var reader io.Reader
if payload != nil {
reader = bytes.NewReader(payload)
}
hreq, err := http.NewRequest(req.method, req.url(), reader)
for k, v := range req.headers {
if v != "" {
hreq.Header.Set(k, v)
}
}
if err != nil {
return nil, err
}
t0 := time.Now()
resp, err := client.httpClient.Do(hreq)
t1 := time.Now()
if err != nil {
return nil, err
}
if client.debug {
log.Printf("Invoke %s %s %d (%v)", req.method, req.url(), resp.StatusCode, t1.Sub(t0))
}
if resp.StatusCode != 200 && resp.StatusCode != 204 && resp.StatusCode != 206 {
return nil, buildError(resp)
}
return resp, nil
}
func (client *Client) requestWithJsonResponse(req *request, v interface{}) error {
resp, err := client.doRequest(req)
if err != nil {
return err
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
return json.Unmarshal(data, v)
}
func (client *Client) requestWithClose(req *request) error {
resp, err := client.doRequest(req)
if err != nil {
return err
}
resp.Body.Close()
return nil
}
type Error struct {
StatusCode int
Code string `json:"errorCode,omitempty"`
Message string `json:"errorMessage,omitempty"`
}
func (err *Error) Error() string {
return fmt.Sprintf("Aliyun API Error: Status Code: %d Code: %s Message: %s", err.StatusCode, err.Code, err.Message)
}
func buildError(resp *http.Response) error {
defer resp.Body.Close()
err := &Error{}
json.NewDecoder(resp.Body).Decode(err)
err.StatusCode = resp.StatusCode
if err.Message == "" {
err.Message = resp.Status
}
return err
}
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