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client.go
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client.go
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package base
import (
"context"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"os"
"strings"
"time"
)
const (
accessKey = "BYTEPLUS_ACCESSKEY"
secretKey = "BYTEPLUS_SECRETKEY"
defaultScheme = "http"
)
// Client 基础客户端
type Client struct {
Client http.Client
SdkVersion string
ServiceInfo *ServiceInfo
ApiInfoList map[string]*ApiInfo
}
// NewClient 生成一个客户端
func NewClient(info *ServiceInfo, apiInfoList map[string]*ApiInfo) *Client {
transport := &http.Transport{
MaxIdleConns: 1000,
MaxIdleConnsPerHost: 100,
IdleConnTimeout: 10 * time.Second,
}
c := http.Client{Transport: transport}
client := &Client{Client: c, ServiceInfo: info.Clone(), ApiInfoList: apiInfoList}
if client.ServiceInfo.Scheme == "" {
client.ServiceInfo.Scheme = defaultScheme
}
if os.Getenv(accessKey) != "" && os.Getenv(secretKey) != "" {
client.ServiceInfo.Credentials.AccessKeyID = os.Getenv(accessKey)
client.ServiceInfo.Credentials.SecretAccessKey = os.Getenv(secretKey)
} else if _, err := os.Stat(os.Getenv("HOME") + "/.byteplus/config"); err == nil {
if content, err := ioutil.ReadFile(os.Getenv("HOME") + "/.byteplus/config"); err == nil {
m := make(map[string]string)
json.Unmarshal(content, &m)
if accessKey, ok := m["ak"]; ok {
client.ServiceInfo.Credentials.AccessKeyID = accessKey
}
if secretKey, ok := m["sk"]; ok {
client.ServiceInfo.Credentials.SecretAccessKey = secretKey
}
}
}
content, err := ioutil.ReadFile("VERSION")
if err == nil {
client.SdkVersion = strings.TrimSpace(string(content))
client.ServiceInfo.Header.Set("User-Agent", strings.Join([]string{"byteplus-sdk-golang", client.SdkVersion}, "/"))
}
return client
}
func (serviceInfo *ServiceInfo) Clone() *ServiceInfo {
ret := new(ServiceInfo)
//base info
ret.Timeout = serviceInfo.Timeout
ret.Host = serviceInfo.Host
ret.Scheme = serviceInfo.Scheme
//credential
ret.Credentials = serviceInfo.Credentials.Clone()
// header
ret.Header = serviceInfo.Header.Clone()
return ret
}
func (cred Credentials) Clone() Credentials {
return Credentials{
Service: cred.Service,
Region: cred.Region,
SecretAccessKey: cred.SecretAccessKey,
AccessKeyID: cred.AccessKeyID,
SessionToken: cred.SessionToken,
}
}
// SetAccessKey 设置AK
func (client *Client) SetAccessKey(ak string) {
if ak != "" {
client.ServiceInfo.Credentials.AccessKeyID = ak
}
}
// SetSecretKey 设置SK
func (client *Client) SetSecretKey(sk string) {
if sk != "" {
client.ServiceInfo.Credentials.SecretAccessKey = sk
}
}
// SetSessionToken
func (client *Client) SetSessionToken(token string) {
if token != "" {
client.ServiceInfo.Credentials.SessionToken = token
}
}
// SetHost 设置Host
func (client *Client) SetHost(host string) {
if host != "" {
client.ServiceInfo.Host = host
}
}
func (client *Client) SetScheme(scheme string) {
if scheme != "" {
client.ServiceInfo.Scheme = scheme
}
}
// SetCredential 设置Credentials
func (client *Client) SetCredential(c Credentials) {
if c.AccessKeyID != "" {
client.ServiceInfo.Credentials.AccessKeyID = c.AccessKeyID
}
if c.SecretAccessKey != "" {
client.ServiceInfo.Credentials.SecretAccessKey = c.SecretAccessKey
}
if c.Region != "" {
client.ServiceInfo.Credentials.Region = c.Region
}
if c.SessionToken != "" {
client.ServiceInfo.Credentials.SessionToken = c.SessionToken
}
}
func (client *Client) SetTimeout(timeout time.Duration) {
if timeout > 0 {
client.ServiceInfo.Timeout = timeout
}
}
// GetSignUrl 获取签名字符串
func (client *Client) GetSignUrl(api string, query url.Values) (string, error) {
apiInfo := client.ApiInfoList[api]
if apiInfo == nil {
return "", errors.New("相关api不存在")
}
query = mergeQuery(query, apiInfo.Query)
u := url.URL{
Scheme: client.ServiceInfo.Scheme,
Host: client.ServiceInfo.Host,
Path: apiInfo.Path,
RawQuery: query.Encode(),
}
req, err := http.NewRequest(strings.ToUpper(apiInfo.Method), u.String(), nil)
if err != nil {
return "", errors.New("构建request失败")
}
return client.ServiceInfo.Credentials.SignUrl(req), nil
}
// SignSts2 生成sts信息
func (client *Client) SignSts2(inlinePolicy *Policy, expire time.Duration) (*SecurityToken2, error) {
var err error
sts := new(SecurityToken2)
if sts.AccessKeyID, sts.SecretAccessKey, err = createTempAKSK(); err != nil {
return nil, err
}
if expire < time.Minute {
expire = time.Minute
}
now := time.Now()
expireTime := now.Add(expire)
sts.CurrentTime = now.Format(time.RFC3339)
sts.ExpiredTime = expireTime.Format(time.RFC3339)
innerToken, err := createInnerToken(client.ServiceInfo.Credentials, sts, inlinePolicy, expireTime.Unix())
if err != nil {
return nil, err
}
b, _ := json.Marshal(innerToken)
sts.SessionToken = "STS2" + base64.StdEncoding.EncodeToString(b)
return sts, nil
}
// Query 发起Get的query请求
func (client *Client) Query(api string, query url.Values) ([]byte, int, error) {
apiInfo := client.ApiInfoList[api]
if apiInfo == nil {
return []byte(""), 500, errors.New("相关api不存在")
}
timeout := getTimeout(client.ServiceInfo.Timeout, apiInfo.Timeout)
header := mergeHeader(client.ServiceInfo.Header, apiInfo.Header)
query = mergeQuery(query, apiInfo.Query)
u := url.URL{
Scheme: client.ServiceInfo.Scheme,
Host: client.ServiceInfo.Host,
Path: apiInfo.Path,
RawQuery: query.Encode(),
}
req, err := http.NewRequest(strings.ToUpper(apiInfo.Method), u.String(), nil)
if err != nil {
return []byte(""), 500, errors.New("构建request失败")
}
req.Header = header
return client.makeRequest(api, req, timeout)
}
// Json 发起Json的post请求
func (client *Client) Json(api string, query url.Values, body string) ([]byte, int, error) {
apiInfo := client.ApiInfoList[api]
if apiInfo == nil {
return []byte(""), 500, errors.New("相关api不存在")
}
timeout := getTimeout(client.ServiceInfo.Timeout, apiInfo.Timeout)
header := mergeHeader(client.ServiceInfo.Header, apiInfo.Header)
query = mergeQuery(query, apiInfo.Query)
u := url.URL{
Scheme: client.ServiceInfo.Scheme,
Host: client.ServiceInfo.Host,
Path: apiInfo.Path,
RawQuery: query.Encode(),
}
req, err := http.NewRequest(strings.ToUpper(apiInfo.Method), u.String(), strings.NewReader(body))
if err != nil {
return []byte(""), 500, errors.New("构建request失败")
}
req.Header = header
req.Header.Set("Content-Type", "application/json")
return client.makeRequest(api, req, timeout)
}
// PostWithContentType 发起自定义 Content-Type 的 post 请求,Content-Type 不可以为空
func (client *Client) PostWithContentType(api string, query url.Values, body string, ct string) ([]byte, int, error) {
apiInfo := client.ApiInfoList[api]
if apiInfo == nil {
return []byte(""), 500, errors.New("相关api不存在")
}
timeout := getTimeout(client.ServiceInfo.Timeout, apiInfo.Timeout)
header := mergeHeader(client.ServiceInfo.Header, apiInfo.Header)
query = mergeQuery(query, apiInfo.Query)
u := url.URL{
Scheme: client.ServiceInfo.Scheme,
Host: client.ServiceInfo.Host,
Path: apiInfo.Path,
RawQuery: query.Encode(),
}
req, err := http.NewRequest(strings.ToUpper(apiInfo.Method), u.String(), strings.NewReader(body))
if err != nil {
return []byte(""), 500, errors.New("构建request失败")
}
req.Header = header
if ct == "" {
return []byte(""), 500, errors.New("构建reques失败,未指定 Context-Type")
}
req.Header.Set("Content-Type", ct)
return client.makeRequest(api, req, timeout)
}
// Post 发起Post请求
func (client *Client) Post(api string, query url.Values, form url.Values) ([]byte, int, error) {
apiInfo := client.ApiInfoList[api]
if apiInfo == nil {
return []byte(""), 500, errors.New("相关api不存在")
}
timeout := getTimeout(client.ServiceInfo.Timeout, apiInfo.Timeout)
header := mergeHeader(client.ServiceInfo.Header, apiInfo.Header)
query = mergeQuery(query, apiInfo.Query)
form = mergeQuery(form, apiInfo.Form)
u := url.URL{
Scheme: client.ServiceInfo.Scheme,
Host: client.ServiceInfo.Host,
Path: apiInfo.Path,
RawQuery: query.Encode(),
}
req, err := http.NewRequest(strings.ToUpper(apiInfo.Method), u.String(), strings.NewReader(form.Encode()))
if err != nil {
return []byte(""), 500, errors.New("构建request失败")
}
req.Header = header
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
return client.makeRequest(api, req, timeout)
}
func (client *Client) makeRequest(api string, req *http.Request, timeout time.Duration) ([]byte, int, error) {
req = client.ServiceInfo.Credentials.Sign(req)
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
req = req.WithContext(ctx)
resp, err := client.Client.Do(req)
if err != nil {
return []byte(""), 500, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return []byte(""), resp.StatusCode, err
}
if resp.StatusCode < 200 || resp.StatusCode > 299 {
return body, resp.StatusCode, fmt.Errorf("api %s http code %d body %s", api, resp.StatusCode, string(body))
}
return body, resp.StatusCode, nil
}