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package providers |
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import ( |
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"fmt" |
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"os" |
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"strings" |
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) |
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type DefaultCredentialsProvider struct { |
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providerChain []CredentialsProvider |
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lastUsedProvider CredentialsProvider |
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} |
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func NewDefaultCredentialsProvider() (provider *DefaultCredentialsProvider) { |
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providers := []CredentialsProvider{} |
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// Add static ak or sts credentials provider |
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envProvider, err := NewEnvironmentVariableCredentialsProviderBuilder().Build() |
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if err == nil { |
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providers = append(providers, envProvider) |
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} |
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// oidc check |
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oidcProvider, err := NewOIDCCredentialsProviderBuilder().Build() |
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if err == nil { |
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providers = append(providers, oidcProvider) |
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} |
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// cli credentials provider |
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cliProfileProvider, err := NewCLIProfileCredentialsProviderBuilder().Build() |
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if err == nil { |
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providers = append(providers, cliProfileProvider) |
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} |
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// profile credentials provider |
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profileProvider, err := NewProfileCredentialsProviderBuilder().Build() |
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if err == nil { |
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providers = append(providers, profileProvider) |
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} |
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// Add IMDS |
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if os.Getenv("ALIBABA_CLOUD_ECS_METADATA") != "" { |
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ecsRamRoleProvider, err := NewECSRAMRoleCredentialsProviderBuilder().WithRoleName(os.Getenv("ALIBABA_CLOUD_ECS_METADATA")).Build() |
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if err == nil { |
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providers = append(providers, ecsRamRoleProvider) |
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} |
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} |
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// TODO: ALIBABA_CLOUD_CREDENTIALS_URI check |
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return &DefaultCredentialsProvider{ |
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providerChain: providers, |
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} |
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} |
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func (provider *DefaultCredentialsProvider) GetCredentials() (cc *Credentials, err error) { |
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if provider.lastUsedProvider != nil { |
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inner, err1 := provider.lastUsedProvider.GetCredentials() |
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if err1 != nil { |
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return |
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} |
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cc = &Credentials{ |
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AccessKeyId: inner.AccessKeyId, |
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AccessKeySecret: inner.AccessKeySecret, |
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SecurityToken: inner.SecurityToken, |
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ProviderName: fmt.Sprintf("%s/%s", provider.GetProviderName(), provider.lastUsedProvider.GetProviderName()), |
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} |
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return |
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} |
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errors := []string{} |
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for _, p := range provider.providerChain { |
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provider.lastUsedProvider = p |
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inner, errInLoop := p.GetCredentials() |
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if errInLoop != nil { |
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errors = append(errors, errInLoop.Error()) |
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// 如果有错误，进入下一个获取过程 |
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continue |
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} |
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if inner != nil { |
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cc = &Credentials{ |
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AccessKeyId: inner.AccessKeyId, |
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AccessKeySecret: inner.AccessKeySecret, |
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SecurityToken: inner.SecurityToken, |
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ProviderName: fmt.Sprintf("%s/%s", provider.GetProviderName(), p.GetProviderName()), |
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} |
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return |
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} |
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} |
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err = fmt.Errorf("unable to get credentials from any of the providers in the chain: %s", strings.Join(errors, ", ")) |
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return |
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} |
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func (provider *DefaultCredentialsProvider) GetProviderName() string { |
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return "default" |
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} |
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aliyun /
credentials-go
