Platform For AI:Call a service over the VPC direct connection channel

SDK for Python

To use the official SDK for Python to call the service, perform the following steps:

1. Install the SDK.

   pip install -U eas-prediction --user

   For more information about how to use the SDK for Python, see SDK for Python.

2. Compile a call program.

   In the following example, a program that uses strings as input and output is used. For information about sample programs that use other input and output formats, such as TensorFlow or PyTorch programs, see SDK for Python.

   #!/usr/bin/env python
   from eas_prediction import PredictClient
   from eas_prediction import StringRequest
   from eas_prediction import TFRequest
   from eas_prediction import ENDPOINT_TYPE_DIRECT
   if __name__ == '__main__':
       client = PredictClient('http://pai-eas-vpc.cn-shanghai.aliyuncs.com', 'mnist_saved_model_example')
       # Replace the value with the service token. Click Invocation Method in the Service Type column of the service to obtain the token. 
       client.set_token('M2FhNjJlZDBmMzBmMzE4NjFiNzZhMmUxY2IxZjkyMDczNzAzYjFi****')
       client.set_endpoint_type(ENDPOINT_TYPE_DIRECT)  # Indicates that the service is accessed over a VPC direct connection channel. 
       client.init()
       # request = StringRequest('[{}]')
       req = TFRequest('predict_images')
       req.add_feed('images', [1, 784], TFRequest.DT_FLOAT, [1] * 784)
       for x in range(0, 1000000):
           resp = client.predict(req)
           print(resp)
   

   The input of the client = PredictClient() function is the VPC endpoint that is used to call the service, which is specified by the endpoint parameter. The service name is specified by the service_name parameter. The VPC direct connection endpoint is bound to the region. The endpoint is in the pai-eas-vpc.{RegionId}.aliyuncs.com format. For example, the VPC direct connection endpoint in the China (Shanghai) region is pai-eas-vpc.cn-shanghai.aliyuncs.com.

SDK for Java

To use the official SDK for Java to call the service, perform the following steps:

1. Add dependencies. To obtain the latest version of the EAS SDK, see MVN Repository.

   <dependency>
     <groupId>com.aliyun.openservices.eas</groupId>
     <artifactId>eas-sdk</artifactId>
     <version>2.0.13</version>
   </dependency>

   For more information about how to use the SDK for Java, see SDK for Java.

2. Compile a call program.

   import com.aliyun.openservices.eas.predict.http.PredictClient;
   import com.aliyun.openservices.eas.predict.http.HttpConfig;
   
   public class TestString {
       public static void main(String[] args) throws Exception {
           // To ensure that the client object is shared as expected, create and initialize the client object when you start the service instead of creating a new client object for each request. 
           PredictClient client = new PredictClient(new HttpConfig());
           // Replace the value with the service token. Click Invocation Method in the Service Type column of the service to obtain the token. 
           client.setToken("YWFlMDYyZDNmNTc3M2I3MzMwYmY0MmYwM2Y2MTYxMTY4NzBkNzdj****");
           // Configure the domain name of pai-eas-vpc.{region_id}.aliyuncs.com by using the setDirectEndpoint method for connections over VPC. For example, the VPC direct connection endpoint in the China (Shanghai) region is cn-shanghai. 
           client.setDirectEndpoint("pai-eas-vpc.cn-shanghai.aliyuncs.com");
           // Replace the value with the name of the service. 
           client.setModelName("scorecard_pmml_example");
   
           // Define the input string. 
           String request = "[{\"money_credit\": 3000000}, {\"money_credit\": 10000}]";
           System.out.println(request);
   
           // Return a string by using EAS. 
           try {
               String response = client.predict(request);
               System.out.println(response);
           } catch (Exception e) {
               e.printStackTrace();
           }
   
           // Close the client. 
           client.shutdown();
           return;
       }
   }

SDK for Go

You do not need to install EAS SDK for Go in advance. The SDK is automatically downloaded from GitHub by the package manager of the GO language during code compilation. For information about how to use the SDK, see SDK for Go.

The following sample code provides an example on how to use the official SDK for GO:

package main

import (
        "fmt"
        "github.com/pai-eas/eas-golang-sdk/eas"
)

func main() {
    // Configure the domain name of pai-eas-vpc.{region_id}.aliyuncs.com. For example, the VPC direct connection endpoint in the China (Shanghai) region is cn-shanghai. Replace the values with the region in which the service resides and the name of the service. 
    client := eas.NewPredictClient("pai-eas-vpc.cn-shanghai.aliyuncs.com", "scorecard_pmml_example")
    // Replace the value with the service token. Click Invocation Method in the Service Type column of the service to obtain the token. 
    client.SetToken("YWFlMDYyZDNmNTc3M2I3MzMwYmY0MmYwM2Y2MTYxMTY4NzBkNzdj****")
    client.SetEndpointType(eas.EndpointTypeDirect)
    client.Init()
    req := "[{\"fea1\": 1, \"fea2\": 2}]"
    for i := 0; i < 100; i++ {
        resp, err := client.StringPredict(req)
        if err != nil {
            fmt.Printf("failed to predict: %v\n", err.Error())
        } else {
            fmt.Printf("%v\n", resp)
        }
    }
}