可扩展的ProviderChain

Alibaba Cloud Credentials for Go

Alibaba Cloud Credentials for Go is a tool for Go developers to manage credentials.

This document introduces how to obtain and use Alibaba Cloud Credentials for Go.

Requirements

It's necessary for you to make sure your system have installed a Go environment which is new than 1.10.x.

Installation

Use go get to install SDK：

$ go get -u github.com/aliyun/credentials-go

If you use dep to manage your dependence, you can use the following command:

$ dep ensure -add  github.com/aliyun/credentials-go

Quick Examples

Before you begin, you need to sign up for an Alibaba Cloud account and retrieve your Credentials.

Credential Type

AccessKey

Setup access_key credential through User Information Management, it have full authority over the account, please keep it safe. Sometimes for security reasons, you cannot hand over a primary account AccessKey with full access to the developer of a project. You may create a sub-account RAM Sub-account , grant its authorization，and use the AccessKey of RAM Sub-account.

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("access_key").
		// AccessKeyId of your account
		SetAccessKeyId("AccessKeyId").
		// AccessKeySecret of your account
		SetAccessKeySecret("AccessKeySecret")

	akCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}
	credential, err := cred.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	credentialType := credential.Type
	fmt.Println(accessKeyId, accessSecret, credentialType)
}

STS

Create a temporary security credential by applying Temporary Security Credentials (TSC) through the Security Token Service (STS).

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main() {
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("sts").
		// AccessKeyId of your account
		SetAccessKeyId("AccessKeyId").
		// AccessKeySecret of your account
		SetAccessKeySecret("AccessKeySecret").
		// Temporary Security Token
		SetSecurityToken("SecurityToken")

	stsCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := stsCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type
	fmt.Println(accessKeyId, accessSecret, securityToken, credentialType)
}

AssumeRoleWithOIDC

When executing oidc role SSO, obtain the temporary identity credential (STS token) playing the RAM role by calling the AssumeRoleWithOIDC api.

package main

import (
	"fmt"
	"net/http"

	"github.com/aliyun/credentials-go/credentials"
)

func main() {
	config := new(credentials.Config).
		SetType("oidc_role_arn").
		SetOIDCProviderArn("OIDCProviderArn").
		SetOIDCTokenFilePath("OIDCTokenFilePath").
		SetRoleSessionName("RoleSessionName").
		SetPolicy("Policy").
		SetRoleArn("RoleArn").
		SetSessionExpiration(3600)
	oidcCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := oidcCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type

	fmt.Println(accessKeyId, accessKeySecret, securityToken, credentialType)
}

RamRoleArn

By specifying RAM Role, the credential will be able to automatically request maintenance of STS Token. If you want to limit the permissions(How to make a policy) of STS Token, you can assign value for Policy.

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("ram_role_arn").
		// AccessKeyId of your account
		SetAccessKeyId("AccessKeyId").
		// AccessKeySecret of your account
		SetAccessKeySecret("AccessKeySecret").
		// Format: acs:ram::USER_Id:role/ROLE_NAME
		SetRoleArn("RoleArn").
		// Role Session Name
		SetRoleSessionName("RoleSessionName").
		// Not required, limit the permissions of STS Token
		SetPolicy("Policy").
		// Not required, limit the Valid time of STS Token
		SetRoleSessionExpiration(3600)

	arnCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}
	credential, err := arnCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type

	fmt.Println(accessKeyId, accessKeySecret, securityToken, credentialType)
}

uriCredential

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).SetType("credentials_uri").SetURL("http://127.0.0.1")
	uriCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := uriCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type

	fmt.Println(accessKeyId, accessKeySecret, securityToken, credentialType)
}

EcsRamRole

By specifying the role name, the credential will be able to automatically request maintenance of STS Token.

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("ecs_ram_role").
		// `roleName` is optional. It will be retrieved automatically if not set. It is highly recommended to set it up to reduce requests
		SetRoleName("RoleName")

	ecsCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := ecsCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type

	fmt.Println(accessKeyId, accessKeySecret, securityToken, credentialType)
}

RsaKeyPair

By specifying the public key Id and the private key file, the credential will be able to automatically request maintenance of the AccessKey before sending the request. Only Japan station is supported.

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("rsa_key_pair").
		// The file path to store the PrivateKey
		SetPrivateKeyFile("PrivateKeyFile").
		// PublicKeyId of your account
		SetPublicKeyId("PublicKeyId")

	rsaCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := rsaCredential.GetCredential()
	accessKeyId := credential.AccessKeyId
	accessSecret := credential.AccessKeySecret
	securityToken := credential.SecurityToken
	credentialType := credential.Type

	fmt.Println(accessKeyId, accessKeySecret, securityToken, credentialType)
}

Bearer Token

If credential is required by the Cloud Call Centre (CCC), please apply for Bearer Token maintenance by yourself.

import (
	"fmt"

	"github.com/aliyun/credentials-go/credentials"
)

func main(){
	config := new(credentials.Config).
		// Which type of credential you want
		SetType("bearer").
		// BearerToken of your account
		SetBearerToken("BearerToken").

	bearerCredential, err := credentials.NewCredential(config)
	if err != nil {
		return
	}

	credential, err := bearerCredential.GetCredential()

	bearerToken := credential.BearerToken
	credentialType := credential.Type
	fmt.Println(bearerToken, credentialType)
}

Credential Provider Chain

If you call NewCredential() with nil, it will use provider chain to get credential for you.

1. Environment Credentials

The program first looks for environment credentials in the environment variable. If the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are defined and are not empty, the program will use them to create the default credential. If not, the program loads and looks for the client in the configuration file.

2. Config File

If there is ~/.alibabacloud/credentials default file (Windows shows C:\Users\USER_NAME\.alibabacloud\credentials), the program will automatically create credential with the name of 'default'. The default file may not exist, but a parse error throws an exception. The specified files can also be loaded indefinitely: AlibabaCloud::load('/data/credentials', 'vfs://AlibabaCloud/credentials', ...); This configuration file can be shared between different projects and between different tools. Because it is outside the project and will not be accidentally committed to the version control. Environment variables can be used on Windows to refer to the home directory %UserProfile%. Unix-like systems can use the environment variable $HOME or ~ (tilde). The path to the default file can be modified by defining the ALIBABA_CLOUD_CREDENTIALS_FILE environment variable.

[default]                          # Default credential
type = access_key                  # Certification type: access_key
access_key_id = foo                # access key id
access_key_secret = bar            # access key secret

3. Instance RAM Role

If the environment variable ALIBABA_CLOUD_ECS_METADATA is defined and not empty, the program will take the value of the environment variable as the role name and request http://100.100.100.200/latest/meta-data/ram/security-credentials/ to get the temporary Security credential.

License

Apache-2.0

	const (
	// EnvVarAccessKeyId is a name of ALIBABA_CLOUD_ACCESS_KEY_Id
	EnvVarAccessKeyId = "ALIBABA_CLOUD_ACCESS_KEY_Id"
	// EnvVarAccessKeySecret is a name of ALIBABA_CLOUD_ACCESS_KEY_SECRET
	EnvVarAccessKeySecret = "ALIBABA_CLOUD_ACCESS_KEY_SECRET"
	)

aliyun / credentials-go Goto Github PK

credentials-go's Introduction

Alibaba Cloud Credentials for Go

Requirements

Installation

Quick Examples

Credential Type

AccessKey

STS

AssumeRoleWithOIDC

RamRoleArn

uriCredential

EcsRamRole

RsaKeyPair

Bearer Token

Credential Provider Chain

1. Environment Credentials

2. Config File

3. Instance RAM Role

License

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