696 lines
21 KiB
Go
696 lines
21 KiB
Go
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package sdk
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import (
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"context"
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"crypto/tls"
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"fmt"
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"net"
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"net/http"
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"net/url"
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"os"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials/provider"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/endpoints"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/errors"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/responses"
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"github.com/aliyun/alibaba-cloud-sdk-go/sdk/utils"
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)
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var debug utils.Debug
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func init() {
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debug = utils.Init("sdk")
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}
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// Version this value will be replaced while build: -ldflags="-X sdk.version=x.x.x"
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var Version = "0.0.1"
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var defaultConnectTimeout = 5 * time.Second
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var defaultReadTimeout = 10 * time.Second
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var DefaultUserAgent = fmt.Sprintf("AlibabaCloud (%s; %s) Golang/%s Core/%s", runtime.GOOS, runtime.GOARCH, strings.Trim(runtime.Version(), "go"), Version)
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var hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
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return fn
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}
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// Client the type Client
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type Client struct {
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isInsecure bool
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regionId string
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config *Config
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httpProxy string
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httpsProxy string
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noProxy string
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userAgent map[string]string
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signer auth.Signer
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httpClient *http.Client
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asyncTaskQueue chan func()
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readTimeout time.Duration
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connectTimeout time.Duration
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debug bool
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isRunning bool
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// void "panic(write to close channel)" cause of addAsync() after Shutdown()
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asyncChanLock *sync.RWMutex
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}
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func (client *Client) Init() (err error) {
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panic("not support yet")
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}
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func (client *Client) SetHTTPSInsecure(isInsecure bool) {
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client.isInsecure = isInsecure
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}
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func (client *Client) GetHTTPSInsecure() bool {
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return client.isInsecure
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}
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func (client *Client) SetHttpsProxy(httpsProxy string) {
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client.httpsProxy = httpsProxy
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}
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func (client *Client) GetHttpsProxy() string {
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return client.httpsProxy
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}
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func (client *Client) SetHttpProxy(httpProxy string) {
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client.httpProxy = httpProxy
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}
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func (client *Client) GetHttpProxy() string {
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return client.httpProxy
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}
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func (client *Client) SetNoProxy(noProxy string) {
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client.noProxy = noProxy
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}
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func (client *Client) GetNoProxy() string {
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return client.noProxy
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}
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// InitWithProviderChain will get credential from the providerChain,
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// the RsaKeyPairCredential Only applicable to regionID `ap-northeast-1`,
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// if your providerChain may return a credential type with RsaKeyPairCredential,
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// please ensure your regionID is `ap-northeast-1`.
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func (client *Client) InitWithProviderChain(regionId string, provider provider.Provider) (err error) {
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config := client.InitClientConfig()
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credential, err := provider.Resolve()
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if err != nil {
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return
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithOptions(regionId string, config *Config, credential auth.Credential) (err error) {
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client.isRunning = true
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client.asyncChanLock = new(sync.RWMutex)
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client.regionId = regionId
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client.config = config
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client.httpClient = &http.Client{}
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if config.HttpTransport != nil {
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client.httpClient.Transport = config.HttpTransport
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}
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if config.Timeout > 0 {
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client.httpClient.Timeout = config.Timeout
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}
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if config.EnableAsync {
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client.EnableAsync(config.GoRoutinePoolSize, config.MaxTaskQueueSize)
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}
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client.signer, err = auth.NewSignerWithCredential(credential, client.ProcessCommonRequestWithSigner)
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return
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}
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func (client *Client) SetReadTimeout(readTimeout time.Duration) {
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client.readTimeout = readTimeout
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}
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func (client *Client) SetConnectTimeout(connectTimeout time.Duration) {
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client.connectTimeout = connectTimeout
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}
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func (client *Client) GetReadTimeout() time.Duration {
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return client.readTimeout
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}
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func (client *Client) GetConnectTimeout() time.Duration {
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return client.connectTimeout
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}
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func (client *Client) getHttpProxy(scheme string) (proxy *url.URL, err error) {
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if scheme == "https" {
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if client.GetHttpsProxy() != "" {
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proxy, err = url.Parse(client.httpsProxy)
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} else if rawurl := os.Getenv("HTTPS_PROXY"); rawurl != "" {
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proxy, err = url.Parse(rawurl)
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} else if rawurl := os.Getenv("https_proxy"); rawurl != "" {
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proxy, err = url.Parse(rawurl)
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}
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} else {
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if client.GetHttpProxy() != "" {
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proxy, err = url.Parse(client.httpProxy)
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} else if rawurl := os.Getenv("HTTP_PROXY"); rawurl != "" {
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proxy, err = url.Parse(rawurl)
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} else if rawurl := os.Getenv("http_proxy"); rawurl != "" {
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proxy, err = url.Parse(rawurl)
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}
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}
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return proxy, err
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}
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func (client *Client) getNoProxy(scheme string) []string {
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var urls []string
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if client.GetNoProxy() != "" {
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urls = strings.Split(client.noProxy, ",")
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} else if rawurl := os.Getenv("NO_PROXY"); rawurl != "" {
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urls = strings.Split(rawurl, ",")
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} else if rawurl := os.Getenv("no_proxy"); rawurl != "" {
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urls = strings.Split(rawurl, ",")
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}
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return urls
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}
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// EnableAsync enable the async task queue
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func (client *Client) EnableAsync(routinePoolSize, maxTaskQueueSize int) {
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client.asyncTaskQueue = make(chan func(), maxTaskQueueSize)
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for i := 0; i < routinePoolSize; i++ {
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go func() {
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for client.isRunning {
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select {
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case task, notClosed := <-client.asyncTaskQueue:
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if notClosed {
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task()
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}
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}
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}
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}()
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}
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}
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func (client *Client) InitWithAccessKey(regionId, accessKeyId, accessKeySecret string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.BaseCredential{
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AccessKeyId: accessKeyId,
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AccessKeySecret: accessKeySecret,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithStsToken(regionId, accessKeyId, accessKeySecret, securityToken string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.StsTokenCredential{
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AccessKeyId: accessKeyId,
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AccessKeySecret: accessKeySecret,
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AccessKeyStsToken: securityToken,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithRamRoleArn(regionId, accessKeyId, accessKeySecret, roleArn, roleSessionName string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.RamRoleArnCredential{
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AccessKeyId: accessKeyId,
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AccessKeySecret: accessKeySecret,
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RoleArn: roleArn,
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RoleSessionName: roleSessionName,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithRamRoleArnAndPolicy(regionId, accessKeyId, accessKeySecret, roleArn, roleSessionName, policy string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.RamRoleArnCredential{
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AccessKeyId: accessKeyId,
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AccessKeySecret: accessKeySecret,
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RoleArn: roleArn,
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RoleSessionName: roleSessionName,
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Policy: policy,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithRsaKeyPair(regionId, publicKeyId, privateKey string, sessionExpiration int) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.RsaKeyPairCredential{
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PrivateKey: privateKey,
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PublicKeyId: publicKeyId,
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SessionExpiration: sessionExpiration,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithEcsRamRole(regionId, roleName string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.EcsRamRoleCredential{
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RoleName: roleName,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitWithBearerToken(regionId, bearerToken string) (err error) {
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config := client.InitClientConfig()
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credential := &credentials.BearerTokenCredential{
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BearerToken: bearerToken,
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}
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return client.InitWithOptions(regionId, config, credential)
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}
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func (client *Client) InitClientConfig() (config *Config) {
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if client.config != nil {
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return client.config
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} else {
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return NewConfig()
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}
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}
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func (client *Client) DoAction(request requests.AcsRequest, response responses.AcsResponse) (err error) {
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return client.DoActionWithSigner(request, response, nil)
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}
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func (client *Client) buildRequestWithSigner(request requests.AcsRequest, signer auth.Signer) (httpRequest *http.Request, err error) {
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// add clientVersion
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request.GetHeaders()["x-sdk-core-version"] = Version
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regionId := client.regionId
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if len(request.GetRegionId()) > 0 {
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regionId = request.GetRegionId()
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}
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// resolve endpoint
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resolveParam := &endpoints.ResolveParam{
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Domain: request.GetDomain(),
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Product: request.GetProduct(),
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RegionId: regionId,
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LocationProduct: request.GetLocationServiceCode(),
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LocationEndpointType: request.GetLocationEndpointType(),
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CommonApi: client.ProcessCommonRequest,
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}
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endpoint, err := endpoints.Resolve(resolveParam)
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if err != nil {
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return
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}
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request.SetDomain(endpoint)
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if request.GetScheme() == "" {
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request.SetScheme(client.config.Scheme)
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}
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// init request params
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err = requests.InitParams(request)
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if err != nil {
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return
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}
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// signature
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var finalSigner auth.Signer
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if signer != nil {
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finalSigner = signer
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} else {
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finalSigner = client.signer
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}
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httpRequest, err = buildHttpRequest(request, finalSigner, regionId)
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if err == nil {
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userAgent := DefaultUserAgent + getSendUserAgent(client.config.UserAgent, client.userAgent, request.GetUserAgent())
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httpRequest.Header.Set("User-Agent", userAgent)
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}
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return
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}
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func getSendUserAgent(configUserAgent string, clientUserAgent, requestUserAgent map[string]string) string {
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realUserAgent := ""
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for key1, value1 := range clientUserAgent {
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for key2, _ := range requestUserAgent {
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if key1 == key2 {
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key1 = ""
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}
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}
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if key1 != "" {
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realUserAgent += fmt.Sprintf(" %s/%s", key1, value1)
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}
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}
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for key, value := range requestUserAgent {
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realUserAgent += fmt.Sprintf(" %s/%s", key, value)
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}
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if configUserAgent != "" {
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return realUserAgent + fmt.Sprintf(" Extra/%s", configUserAgent)
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}
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return realUserAgent
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}
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func (client *Client) AppendUserAgent(key, value string) {
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newkey := true
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if client.userAgent == nil {
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client.userAgent = make(map[string]string)
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}
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if strings.ToLower(key) != "core" && strings.ToLower(key) != "go" {
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for tag, _ := range client.userAgent {
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if tag == key {
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client.userAgent[tag] = value
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newkey = false
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}
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}
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if newkey {
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client.userAgent[key] = value
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}
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}
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}
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func (client *Client) BuildRequestWithSigner(request requests.AcsRequest, signer auth.Signer) (err error) {
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_, err = client.buildRequestWithSigner(request, signer)
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return
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}
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func (client *Client) getTimeout(request requests.AcsRequest) (time.Duration, time.Duration) {
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readTimeout := defaultReadTimeout
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connectTimeout := defaultConnectTimeout
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reqReadTimeout := request.GetReadTimeout()
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reqConnectTimeout := request.GetConnectTimeout()
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if reqReadTimeout != 0*time.Millisecond {
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readTimeout = reqReadTimeout
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} else if client.readTimeout != 0*time.Millisecond {
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readTimeout = client.readTimeout
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}
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if reqConnectTimeout != 0*time.Millisecond {
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connectTimeout = reqConnectTimeout
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} else if client.connectTimeout != 0*time.Millisecond {
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connectTimeout = client.connectTimeout
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}
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return readTimeout, connectTimeout
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}
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func Timeout(connectTimeout, readTimeout time.Duration) func(cxt context.Context, net, addr string) (c net.Conn, err error) {
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return func(ctx context.Context, network, address string) (net.Conn, error) {
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conn, err := (&net.Dialer{
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Timeout: connectTimeout,
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KeepAlive: 0 * time.Second,
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DualStack: true,
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}).DialContext(ctx, network, address)
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if err == nil {
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conn.SetDeadline(time.Now().Add(readTimeout))
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}
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return conn, err
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}
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}
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func (client *Client) setTimeout(request requests.AcsRequest) {
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readTimeout, connectTimeout := client.getTimeout(request)
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if trans, ok := client.httpClient.Transport.(*http.Transport); ok && trans != nil {
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trans.DialContext = Timeout(connectTimeout, readTimeout)
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client.httpClient.Transport = trans
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} else {
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client.httpClient.Transport = &http.Transport{
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DialContext: Timeout(connectTimeout, readTimeout),
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}
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}
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}
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func (client *Client) getHTTPSInsecure(request requests.AcsRequest) (insecure bool) {
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if request.GetHTTPSInsecure() != nil {
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insecure = *request.GetHTTPSInsecure()
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} else {
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insecure = client.GetHTTPSInsecure()
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}
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return insecure
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}
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func (client *Client) DoActionWithSigner(request requests.AcsRequest, response responses.AcsResponse, signer auth.Signer) (err error) {
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httpRequest, err := client.buildRequestWithSigner(request, signer)
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if err != nil {
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return
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}
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client.setTimeout(request)
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proxy, err := client.getHttpProxy(httpRequest.URL.Scheme)
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if err != nil {
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return err
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}
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noProxy := client.getNoProxy(httpRequest.URL.Scheme)
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var flag bool
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for _, value := range noProxy {
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if value == httpRequest.Host {
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flag = true
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break
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}
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}
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// Set whether to ignore certificate validation.
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// Default InsecureSkipVerify is false.
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if trans, ok := client.httpClient.Transport.(*http.Transport); ok && trans != nil {
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trans.TLSClientConfig = &tls.Config{
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InsecureSkipVerify: client.getHTTPSInsecure(request),
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}
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if proxy != nil && !flag {
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trans.Proxy = http.ProxyURL(proxy)
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}
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client.httpClient.Transport = trans
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}
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var httpResponse *http.Response
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for retryTimes := 0; retryTimes <= client.config.MaxRetryTime; retryTimes++ {
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if proxy != nil && proxy.User != nil{
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if password, passwordSet := proxy.User.Password(); passwordSet {
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httpRequest.SetBasicAuth(proxy.User.Username(), password)
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}
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}
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debug("> %s %s %s", httpRequest.Method, httpRequest.URL.RequestURI(), httpRequest.Proto)
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debug("> Host: %s", httpRequest.Host)
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for key, value := range httpRequest.Header {
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debug("> %s: %v", key, strings.Join(value, ""))
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}
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debug(">")
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httpResponse, err = hookDo(client.httpClient.Do)(httpRequest)
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if err == nil {
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debug("< %s %s", httpResponse.Proto, httpResponse.Status)
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for key, value := range httpResponse.Header {
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debug("< %s: %v", key, strings.Join(value, ""))
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}
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}
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debug("<")
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// receive error
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if err != nil {
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if !client.config.AutoRetry {
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return
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} else if retryTimes >= client.config.MaxRetryTime {
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// timeout but reached the max retry times, return
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var timeoutErrorMsg string
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if strings.Contains(err.Error(), "read tcp") {
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timeoutErrorMsg = fmt.Sprintf(errors.TimeoutErrorMessage, strconv.Itoa(retryTimes+1), strconv.Itoa(retryTimes+1)) + " Read timeout. Please set a valid ReadTimeout."
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} else {
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timeoutErrorMsg = fmt.Sprintf(errors.TimeoutErrorMessage, strconv.Itoa(retryTimes+1), strconv.Itoa(retryTimes+1)) + " Connect timeout. Please set a valid ConnectTimeout."
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}
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err = errors.NewClientError(errors.TimeoutErrorCode, timeoutErrorMsg, err)
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return
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}
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}
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// if status code >= 500 or timeout, will trigger retry
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if client.config.AutoRetry && (err != nil || isServerError(httpResponse)) {
|
|
client.setTimeout(request)
|
|
// rewrite signatureNonce and signature
|
|
httpRequest, err = client.buildRequestWithSigner(request, signer)
|
|
// buildHttpRequest(request, finalSigner, regionId)
|
|
if err != nil {
|
|
return
|
|
}
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
|
|
err = responses.Unmarshal(response, httpResponse, request.GetAcceptFormat())
|
|
// wrap server errors
|
|
if serverErr, ok := err.(*errors.ServerError); ok {
|
|
var wrapInfo = map[string]string{}
|
|
wrapInfo["StringToSign"] = request.GetStringToSign()
|
|
err = errors.WrapServerError(serverErr, wrapInfo)
|
|
}
|
|
return
|
|
}
|
|
|
|
func buildHttpRequest(request requests.AcsRequest, singer auth.Signer, regionId string) (httpRequest *http.Request, err error) {
|
|
err = auth.Sign(request, singer, regionId)
|
|
if err != nil {
|
|
return
|
|
}
|
|
requestMethod := request.GetMethod()
|
|
requestUrl := request.BuildUrl()
|
|
body := request.GetBodyReader()
|
|
httpRequest, err = http.NewRequest(requestMethod, requestUrl, body)
|
|
if err != nil {
|
|
return
|
|
}
|
|
for key, value := range request.GetHeaders() {
|
|
httpRequest.Header[key] = []string{value}
|
|
}
|
|
// host is a special case
|
|
if host, containsHost := request.GetHeaders()["Host"]; containsHost {
|
|
httpRequest.Host = host
|
|
}
|
|
return
|
|
}
|
|
|
|
func isServerError(httpResponse *http.Response) bool {
|
|
return httpResponse.StatusCode >= http.StatusInternalServerError
|
|
}
|
|
|
|
/**
|
|
only block when any one of the following occurs:
|
|
1. the asyncTaskQueue is full, increase the queue size to avoid this
|
|
2. Shutdown() in progressing, the client is being closed
|
|
**/
|
|
func (client *Client) AddAsyncTask(task func()) (err error) {
|
|
if client.asyncTaskQueue != nil {
|
|
client.asyncChanLock.RLock()
|
|
defer client.asyncChanLock.RUnlock()
|
|
if client.isRunning {
|
|
client.asyncTaskQueue <- task
|
|
}
|
|
} else {
|
|
err = errors.NewClientError(errors.AsyncFunctionNotEnabledCode, errors.AsyncFunctionNotEnabledMessage, nil)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (client *Client) GetConfig() *Config {
|
|
return client.config
|
|
}
|
|
|
|
func NewClient() (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.Init()
|
|
return
|
|
}
|
|
|
|
func NewClientWithProvider(regionId string, providers ...provider.Provider) (client *Client, err error) {
|
|
client = &Client{}
|
|
var pc provider.Provider
|
|
if len(providers) == 0 {
|
|
pc = provider.DefaultChain
|
|
} else {
|
|
pc = provider.NewProviderChain(providers)
|
|
}
|
|
err = client.InitWithProviderChain(regionId, pc)
|
|
return
|
|
}
|
|
|
|
func NewClientWithOptions(regionId string, config *Config, credential auth.Credential) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithOptions(regionId, config, credential)
|
|
return
|
|
}
|
|
|
|
func NewClientWithAccessKey(regionId, accessKeyId, accessKeySecret string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithAccessKey(regionId, accessKeyId, accessKeySecret)
|
|
return
|
|
}
|
|
|
|
func NewClientWithStsToken(regionId, stsAccessKeyId, stsAccessKeySecret, stsToken string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithStsToken(regionId, stsAccessKeyId, stsAccessKeySecret, stsToken)
|
|
return
|
|
}
|
|
|
|
func NewClientWithRamRoleArn(regionId string, accessKeyId, accessKeySecret, roleArn, roleSessionName string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithRamRoleArn(regionId, accessKeyId, accessKeySecret, roleArn, roleSessionName)
|
|
return
|
|
}
|
|
|
|
func NewClientWithRamRoleArnAndPolicy(regionId string, accessKeyId, accessKeySecret, roleArn, roleSessionName, policy string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithRamRoleArnAndPolicy(regionId, accessKeyId, accessKeySecret, roleArn, roleSessionName, policy)
|
|
return
|
|
}
|
|
|
|
func NewClientWithEcsRamRole(regionId string, roleName string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithEcsRamRole(regionId, roleName)
|
|
return
|
|
}
|
|
|
|
func NewClientWithRsaKeyPair(regionId string, publicKeyId, privateKey string, sessionExpiration int) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithRsaKeyPair(regionId, publicKeyId, privateKey, sessionExpiration)
|
|
return
|
|
}
|
|
|
|
func NewClientWithBearerToken(regionId, bearerToken string) (client *Client, err error) {
|
|
client = &Client{}
|
|
err = client.InitWithBearerToken(regionId, bearerToken)
|
|
return
|
|
}
|
|
|
|
func (client *Client) ProcessCommonRequest(request *requests.CommonRequest) (response *responses.CommonResponse, err error) {
|
|
request.TransToAcsRequest()
|
|
response = responses.NewCommonResponse()
|
|
err = client.DoAction(request, response)
|
|
return
|
|
}
|
|
|
|
func (client *Client) ProcessCommonRequestWithSigner(request *requests.CommonRequest, signerInterface interface{}) (response *responses.CommonResponse, err error) {
|
|
if signer, isSigner := signerInterface.(auth.Signer); isSigner {
|
|
request.TransToAcsRequest()
|
|
response = responses.NewCommonResponse()
|
|
err = client.DoActionWithSigner(request, response, signer)
|
|
return
|
|
}
|
|
panic("should not be here")
|
|
}
|
|
|
|
func (client *Client) Shutdown() {
|
|
// lock the addAsync()
|
|
client.asyncChanLock.Lock()
|
|
defer client.asyncChanLock.Unlock()
|
|
if client.asyncTaskQueue != nil {
|
|
close(client.asyncTaskQueue)
|
|
}
|
|
client.isRunning = false
|
|
}
|
|
|
|
// Deprecated: Use NewClientWithRamRoleArn in this package instead.
|
|
func NewClientWithStsRoleArn(regionId string, accessKeyId, accessKeySecret, roleArn, roleSessionName string) (client *Client, err error) {
|
|
return NewClientWithRamRoleArn(regionId, accessKeyId, accessKeySecret, roleArn, roleSessionName)
|
|
}
|
|
|
|
// Deprecated: Use NewClientWithEcsRamRole in this package instead.
|
|
func NewClientWithStsRoleNameOnEcs(regionId string, roleName string) (client *Client, err error) {
|
|
return NewClientWithEcsRamRole(regionId, roleName)
|
|
}
|