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package providers |
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import ( |
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"encoding/json" |
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"errors" |
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"fmt" |
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"net/http" |
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"os" |
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"time" |
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httputil "github.com/aliyun/credentials-go/credentials/internal/http" |
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) |
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type URLCredentialsProvider struct { |
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url string |
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// for sts |
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sessionCredentials *sessionCredentials |
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// for http options |
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httpOptions *HttpOptions |
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// inner |
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expirationTimestamp int64 |
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} |
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type URLCredentialsProviderBuilder struct { |
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provider *URLCredentialsProvider |
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} |
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func NewURLCredentialsProviderBuilder() *URLCredentialsProviderBuilder { |
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return &URLCredentialsProviderBuilder{ |
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provider: &URLCredentialsProvider{}, |
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} |
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} |
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func (builder *URLCredentialsProviderBuilder) WithUrl(url string) *URLCredentialsProviderBuilder { |
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builder.provider.url = url |
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return builder |
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} |
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func (builder *URLCredentialsProviderBuilder) WithHttpOptions(httpOptions *HttpOptions) *URLCredentialsProviderBuilder { |
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builder.provider.httpOptions = httpOptions |
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return builder |
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} |
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func (builder *URLCredentialsProviderBuilder) Build() (provider *URLCredentialsProvider, err error) { |
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if builder.provider.url == "" { |
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builder.provider.url = os.Getenv("ALIBABA_CLOUD_CREDENTIALS_URI") |
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} |
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if builder.provider.url == "" { |
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err = errors.New("the url is empty") |
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return |
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} |
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provider = builder.provider |
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return |
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} |
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type urlResponse struct { |
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AccessKeyId *string `json:"AccessKeyId"` |
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AccessKeySecret *string `json:"AccessKeySecret"` |
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SecurityToken *string `json:"SecurityToken"` |
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Expiration *string `json:"Expiration"` |
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} |
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func (provider *URLCredentialsProvider) getCredentials() (session *sessionCredentials, err error) { |
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req := &httputil.Request{ |
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Method: "GET", |
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URL: provider.url, |
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} |
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connectTimeout := 5 * time.Second |
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readTimeout := 10 * time.Second |
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if provider.httpOptions != nil && provider.httpOptions.ConnectTimeout > 0 { |
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connectTimeout = time.Duration(provider.httpOptions.ConnectTimeout) * time.Millisecond |
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} |
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if provider.httpOptions != nil && provider.httpOptions.ReadTimeout > 0 { |
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readTimeout = time.Duration(provider.httpOptions.ReadTimeout) * time.Millisecond |
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} |
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if provider.httpOptions != nil && provider.httpOptions.Proxy != "" { |
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req.Proxy = provider.httpOptions.Proxy |
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} |
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req.ConnectTimeout = connectTimeout |
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req.ReadTimeout = readTimeout |
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res, err := httpDo(req) |
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if err != nil { |
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return |
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} |
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if res.StatusCode != http.StatusOK { |
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err = fmt.Errorf("get credentials from %s failed: %s", req.BuildRequestURL(), string(res.Body)) |
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return |
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} |
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var resp urlResponse |
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err = json.Unmarshal(res.Body, &resp) |
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if err != nil { |
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err = fmt.Errorf("get credentials from %s failed with error, json unmarshal fail: %s", req.BuildRequestURL(), err.Error()) |
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return |
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} |
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if resp.AccessKeyId == nil || resp.AccessKeySecret == nil || resp.SecurityToken == nil || resp.Expiration == nil { |
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err = fmt.Errorf("refresh credentials from %s failed: %s", req.BuildRequestURL(), string(res.Body)) |
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return |
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} |
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session = &sessionCredentials{ |
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AccessKeyId: *resp.AccessKeyId, |
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AccessKeySecret: *resp.AccessKeySecret, |
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SecurityToken: *resp.SecurityToken, |
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Expiration: *resp.Expiration, |
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} |
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return |
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} |
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func (provider *URLCredentialsProvider) needUpdateCredential() (result bool) { |
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if provider.expirationTimestamp == 0 { |
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return true |
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} |
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return provider.expirationTimestamp-time.Now().Unix() <= 180 |
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} |
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func (provider *URLCredentialsProvider) GetCredentials() (cc *Credentials, err error) { |
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if provider.sessionCredentials == nil || provider.needUpdateCredential() { |
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sessionCredentials, err1 := provider.getCredentials() |
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if err1 != nil { |
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return nil, err1 |
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} |
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provider.sessionCredentials = sessionCredentials |
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expirationTime, err2 := time.Parse("2006-01-02T15:04:05Z", sessionCredentials.Expiration) |
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if err2 != nil { |
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return nil, err2 |
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} |
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provider.expirationTimestamp = expirationTime.Unix() |
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} |
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cc = &Credentials{ |
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AccessKeyId: provider.sessionCredentials.AccessKeyId, |
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AccessKeySecret: provider.sessionCredentials.AccessKeySecret, |
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SecurityToken: provider.sessionCredentials.SecurityToken, |
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ProviderName: provider.GetProviderName(), |
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} |
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return |
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} |
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func (provider *URLCredentialsProvider) GetProviderName() string { |
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return "credential_uri" |
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} |
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aliyun /
credentials-go
