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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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"os" |
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"strconv" |
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"strings" |
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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 ECSRAMRoleCredentialsProvider struct { |
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roleName string |
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disableIMDSv1 bool |
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// for sts |
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session *sessionCredentials |
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expirationTimestamp int64 |
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// for http options |
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httpOptions *HttpOptions |
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} |
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type ECSRAMRoleCredentialsProviderBuilder struct { |
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provider *ECSRAMRoleCredentialsProvider |
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} |
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func NewECSRAMRoleCredentialsProviderBuilder() *ECSRAMRoleCredentialsProviderBuilder { |
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return &ECSRAMRoleCredentialsProviderBuilder{ |
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provider: &ECSRAMRoleCredentialsProvider{}, |
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} |
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} |
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func (builder *ECSRAMRoleCredentialsProviderBuilder) WithRoleName(roleName string) *ECSRAMRoleCredentialsProviderBuilder { |
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builder.provider.roleName = roleName |
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return builder |
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} |
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func (builder *ECSRAMRoleCredentialsProviderBuilder) WithDisableIMDSv1(disableIMDSv1 bool) *ECSRAMRoleCredentialsProviderBuilder { |
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builder.provider.disableIMDSv1 = disableIMDSv1 |
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return builder |
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} |
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func (builder *ECSRAMRoleCredentialsProviderBuilder) WithHttpOptions(httpOptions *HttpOptions) *ECSRAMRoleCredentialsProviderBuilder { |
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builder.provider.httpOptions = httpOptions |
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return builder |
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} |
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const defaultMetadataTokenDuration = 21600 // 6 hours |
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func (builder *ECSRAMRoleCredentialsProviderBuilder) Build() (provider *ECSRAMRoleCredentialsProvider, err error) { |
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if strings.ToLower(os.Getenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED")) == "true" { |
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err = errors.New("IMDS credentials is disabled") |
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return |
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} |
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// 设置 roleName 默认值 |
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if builder.provider.roleName == "" { |
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builder.provider.roleName = os.Getenv("ALIBABA_CLOUD_ECS_METADATA") |
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} |
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if !builder.provider.disableIMDSv1 { |
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builder.provider.disableIMDSv1 = strings.ToLower(os.Getenv("ALIBABA_CLOUD_IMDSV1_DISABLED")) == "true" |
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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 ecsRAMRoleResponse struct { |
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Code *string `json:"Code"` |
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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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LastUpdated *string `json:"LastUpdated"` |
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Expiration *string `json:"Expiration"` |
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} |
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func (provider *ECSRAMRoleCredentialsProvider) needUpdateCredential() 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 *ECSRAMRoleCredentialsProvider) getRoleName() (roleName string, err error) { |
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req := &httputil.Request{ |
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Method: "GET", |
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Protocol: "http", |
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Host: "100.100.100.200", |
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Path: "/latest/meta-data/ram/security-credentials/", |
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Headers: map[string]string{}, |
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} |
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connectTimeout := 1 * time.Second |
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readTimeout := 1 * 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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metadataToken, err := provider.getMetadataToken() |
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if err != nil { |
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return "", err |
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} |
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if metadataToken != "" { |
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req.Headers["x-aliyun-ecs-metadata-token"] = metadataToken |
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} |
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res, err := httpDo(req) |
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if err != nil { |
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err = fmt.Errorf("get role name failed: %s", err.Error()) |
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return |
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} |
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if res.StatusCode != 200 { |
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err = fmt.Errorf("get role name failed: %s %d", req.BuildRequestURL(), res.StatusCode) |
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return |
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} |
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roleName = strings.TrimSpace(string(res.Body)) |
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return |
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} |
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func (provider *ECSRAMRoleCredentialsProvider) getCredentials() (session *sessionCredentials, err error) { |
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roleName := provider.roleName |
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if roleName == "" { |
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roleName, err = provider.getRoleName() |
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if err != nil { |
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return |
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} |
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} |
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req := &httputil.Request{ |
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Method: "GET", |
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Protocol: "http", |
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Host: "100.100.100.200", |
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Path: "/latest/meta-data/ram/security-credentials/" + roleName, |
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Headers: map[string]string{}, |
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} |
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connectTimeout := 1 * time.Second |
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readTimeout := 1 * 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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metadataToken, err := provider.getMetadataToken() |
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if err != nil { |
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return nil, err |
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} |
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if metadataToken != "" { |
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req.Headers["x-aliyun-ecs-metadata-token"] = metadataToken |
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} |
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res, err := httpDo(req) |
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if err != nil { |
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err = fmt.Errorf("refresh Ecs sts token err: %s", err.Error()) |
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return |
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} |
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if res.StatusCode != 200 { |
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err = fmt.Errorf("refresh Ecs sts token err, httpStatus: %d, message = %s", res.StatusCode, string(res.Body)) |
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return |
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} |
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var data ecsRAMRoleResponse |
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err = json.Unmarshal(res.Body, &data) |
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if err != nil { |
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err = fmt.Errorf("refresh Ecs sts token err, json.Unmarshal fail: %s", err.Error()) |
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return |
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} |
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if data.AccessKeyId == nil || data.AccessKeySecret == nil || data.SecurityToken == nil { |
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err = fmt.Errorf("refresh Ecs sts token err, fail to get credentials") |
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return |
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} |
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if *data.Code != "Success" { |
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err = fmt.Errorf("refresh Ecs sts token err, Code is not Success") |
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return |
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} |
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session = &sessionCredentials{ |
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AccessKeyId: *data.AccessKeyId, |
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AccessKeySecret: *data.AccessKeySecret, |
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SecurityToken: *data.SecurityToken, |
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Expiration: *data.Expiration, |
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} |
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return |
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} |
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func (provider *ECSRAMRoleCredentialsProvider) GetCredentials() (cc *Credentials, err error) { |
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if provider.session == nil || provider.needUpdateCredential() { |
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session, 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.session = session |
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expirationTime, err2 := time.Parse("2006-01-02T15:04:05Z", session.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.session.AccessKeyId, |
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AccessKeySecret: provider.session.AccessKeySecret, |
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SecurityToken: provider.session.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 *ECSRAMRoleCredentialsProvider) GetProviderName() string { |
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return "ecs_ram_role" |
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} |
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func (provider *ECSRAMRoleCredentialsProvider) getMetadataToken() (metadataToken string, err error) { |
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// PUT http://100.100.100.200/latest/api/token |
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req := &httputil.Request{ |
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Method: "PUT", |
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Protocol: "http", |
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Host: "100.100.100.200", |
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Path: "/latest/api/token", |
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Headers: map[string]string{ |
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"X-aliyun-ecs-metadata-token-ttl-seconds": strconv.Itoa(defaultMetadataTokenDuration), |
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}, |
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} |
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connectTimeout := 1 * time.Second |
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readTimeout := 1 * 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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if provider.disableIMDSv1 { |
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err = fmt.Errorf("get metadata token failed: %s", _err.Error()) |
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} |
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return |
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} |
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if res.StatusCode != 200 { |
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if provider.disableIMDSv1 { |
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err = fmt.Errorf("refresh Ecs sts token err, httpStatus: %d, message = %s", res.StatusCode, string(res.Body)) |
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} |
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return |
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} |
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metadataToken = string(res.Body) |
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return |
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} |
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aliyun /
credentials-go
