Initialization

Usage steps

Confirm Endpoint

Before using the SDK, you must confirm the endpoint (service domain) which Baidu AI Cloud will be integrated with. Taking Baidu's Virtual Private Cloud (VPC) product as an example, you can read the Service Domain Names section to understand concepts related to endpoints. Similar to other services, it is necessary to understand and confirm the endpoints of the corresponding services.

Create a Client object

Each specific service has a Client object, which encapsulates a series of easy-to-use methods for developers to interact with the corresponding service. Developers can refer to the directory corresponding to the specific service within the SDK to use the relevant service.

Call function API

Developers can call corresponding function APIs based on the created Client object of the relevant service to utilize the functions of Baidu AI Cloud.

Example

Using Baidu AI Cloud’s Virtual Private Cloud (VPC) as an example, a basic usage demonstration is provided below. For detailed usage instructions, refer to the service-specific documentation.

1import (
2	"github.com/baidubce/bce-sdk-go/services/vpc"
3)
4func main() {
5 // User’s Access Key ID and Secret Access Key
6	ACCESS_KEY_ID, SECRET_ACCESS_KEY := "<your-access-key-id>", "<your-secret-access-key>"
7 // VPC service endpoint
8	ENDPOINT := "<domain-name>"
9 // Create VPC service client
10	vpcClient, err := vpc.NewClient(AK, SK, ENDPOINT)
11 // Create VPC
12    args := &CreateVPCArgs{
13		Name:        "TestSDK-VPC",
14		Description: "vpc test",
15		Cidr:        "192.168.0.0/16",
16		ClientToken: "clientToken",
17	}
18	result, err := vpcClient.CreateVPC("<your-create-vpc-args>"); err != nil {
19	if err != nil {
20		fmt.Println("create vpc failed:", err)
21	}
22	fmt.Println("create vpc success ,vpc id ", result.VPCID)
23}

Configuration

Use HTTPS

The SDK supports access to the service products of Baidu AI Cloud by HTTPS. To use HTTPS, you can simply specify the domain name using HTTPS in the endpoint when creating the Client object corresponding to the service. The SDK will automatically recognize and use HTTPS for access.

Detailed configurations

When developers use the GO SDK, the Client object created for the corresponding service provides the following parameters in its exported Config field for detailed configurations:

Description:

1. The Credentials field is created using the auth.NewBceCredentials and auth.NewSessionBceCredentials functions. The former is used by default, while the latter is used for STS authentication.
2. The SignOption field represents options when generating a signature string, as detailed in the table below:

1 Among configuration options, HeadersToSign defaults to `Host`, `Content-Type`, `Content-Length` and `Content-MD5`; TimeStamp is typically set to zero, indicating that the timestamp at the time of generating the certification string shall be used, and users generally shall not explicitly specify the value for this field; ExpireSeconds defaults to 1,800 seconds or 30 minutes.

3. The Retry field specifies the retry policy, currently supporting two types: NoRetryPolicy and BackOffRetryPolicy. By default, the latter is used. This retry policy specifies the maximum number of retries, the maximum retry duration, and the retry base. Retries increase exponentially based on the retry base multiplied by 2 until the maximum number of retries or the maximum retry duration is reached.

Developers can configure detailed parameters accordingly. Below are some configuration examples:

1// Client is the `Client` object of a specific service
2 // Configure request proxy address
3client.Config.ProxyUrl = "127.0.0.1:8080"
4 // Configure to not retry, default: Back Off retry
5client.Config.Retry = bce.NewNoRetryPolicy()
6 // Configure connection timeout to 30 seconds
7client.Config.ConnectionTimeoutInMillis = 30 * 1000
8 // Configure the HTTP request header Host for signing
9client.Config.SignOption.HeadersToSign = map[string]struct{}{"Host": struct{}{}}
10 // Configure the validity period of the signature to 30 seconds
11client.Config.SignOption.ExpireSeconds = 30