Alibaba Cloud SDK:Exception handling

When you call API operations by using Alibaba Cloud Darabonba SDK for Go, two types of exceptions may be thrown.

The SDK raises the following exception types:

• error: a non-business error, such as a verification failure caused by a modified SDK source file or a parsing failure.

• SDKError: a business error returned by an API operation. This exception includes the following parameters:

  • Code: the error code returned by the API operation.

  • Message: the error message, which includes the request ID of the failed API call.

  • Data: the detailed error information returned by the server.

package main

import (
    "fmt"
    openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
    ecs20160428 "github.com/alibabacloud-go/ecs-20140526/v4/client"
    util "github.com/alibabacloud-go/tea-utils/v2/service"
    "github.com/alibabacloud-go/tea/tea"
    "os"
)

/**
 * Use your AccessKey ID and AccessKey secret to initialize the client.
 * @param accessKeyId
 * @param accessKeySecret
 * @return Client
 * @throws Exception
 */
func createClient() (_result *ecs20160428.Client, _err error) {
    config := &openapi.Config{
       // Required. Make sure that the following environment variable is set in the code runtime environment: ALIBABA_CLOUD_ACCESS_KEY_ID. 
       AccessKeyId: tea.String(os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")),
       // Required. Make sure that the following environment variable is set in the code runtime environment: ALIBABA_CLOUD_ACCESS_KEY_SECRET. 
       AccessKeySecret: tea.String(os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")),
    }
    config.RegionId = tea.String("<regionId>")
    _result = &ecs20160428.Client{}
    _result, _err = ecs20160428.NewClient(config)
    return _result, _err
}

func main() {
    client, _err := createClient()
    if _err != nil {
       fmt.Printf("Error creating client: %v\n", _err)
       return
    }
    describeRegionsRequest := &ecs20160428.DescribeRegionsRequest{}
    resp, tryErr := func() (_result *ecs20160428.DescribeRegionsResponse, _e error) {
       defer func() {
          if r := tea.Recover(recover()); r != nil {
             _e = r
          }
       }()
       _result, _err = client.DescribeRegionsWithOptions(describeRegionsRequest, &util.RuntimeOptions{})
       if _err != nil {
          return nil, _err
       }
       return _result, nil
    }()

    if tryErr != nil {
       if sdkError, ok := tryErr.(*tea.SDKError); ok { // Determine whether the type of the tryErr error is *tea.SDKError based on the error description.
          fmt.Println(tea.StringValue(sdkError.Message))
          fmt.Println(tea.StringValue(sdkError.Code))
          fmt.Println(tea.StringValue(sdkError.Data))
       } else {
          fmt.Println(tea.String(tryErr.Error()))
       }
    } else {
       fmt.Println(resp.Body)
    }
}