Updated on 2024-10-21 GMT+08:00

Querying Apps

Function

This API is used to query apps.

Calling Method

For details, see Calling APIs.

URI

GET /v2/{project_id}/apps

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

limit

No

Integer

Maximum number of apps to list in a single API call

Minimum: 1

Maximum: 100

Default: 10

start_app_name

No

String

Name of the app to start the list with. The returned app list does not contain this app name.

stream_name

No

String

Name of the stream whose apps will be returned

Request Parameters

Table 3 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token

It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token.

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

has_more_app

Boolean

Whether there are more matching consumer applications.

  • true: yes

  • false: no

apps

Array of DescribeAppResult objects

AppEntry list that meets the current request.

total_number

Integer

Total number of apps that meet criteria

Table 5 DescribeAppResult

Parameter

Type

Description

app_name

String

Name of the app

app_id

String

Unique identifier of the app

create_time

Long

Time when the app is created, in milliseconds

commit_checkpoint_stream_names

Array of strings

List of associated streams

Example Requests

Querying Apps

GET https://{Endpoint}/v2/{project_id}/apps

Example Responses

Status code: 200

Normal response

{
  "total_number" : 1,
  "apps" : [ {
    "app_id" : "bd6IPpvgiIflQPMpi9M",
    "app_name" : "newstream",
    "create_time" : 1593569685875
  } ],
  "has_more_app" : true
}

SDK Sample Code

The SDK sample code is as follows.

Java

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.dis.v2.region.DisRegion;
import com.huaweicloud.sdk.dis.v2.*;
import com.huaweicloud.sdk.dis.v2.model.*;


public class ListAppSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");

        ICredential auth = new BasicCredentials()
                .withAk(ak)
                .withSk(sk);

        DisClient client = DisClient.newBuilder()
                .withCredential(auth)
                .withRegion(DisRegion.valueOf("<YOUR REGION>"))
                .build();
        ListAppRequest request = new ListAppRequest();
        request.withLimit(<limit>);
        request.withStartAppName("<start_app_name>");
        request.withStreamName("<stream_name>");
        try {
            ListAppResponse response = client.listApp(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Python

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkdis.v2.region.dis_region import DisRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdis.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]

    credentials = BasicCredentials(ak, sk)

    client = DisClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(DisRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListAppRequest()
        request.limit = <limit>
        request.start_app_name = "<start_app_name>"
        request.stream_name = "<stream_name>"
        response = client.list_app(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    dis "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := dis.NewDisClient(
        dis.DisClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListAppRequest{}
	limitRequest:= int32(<limit>)
	request.Limit = &limitRequest
	startAppNameRequest:= "<start_app_name>"
	request.StartAppName = &startAppNameRequest
	streamNameRequest:= "<stream_name>"
	request.StreamName = &streamNameRequest
	response, err := client.ListApp(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

More

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

Normal response

400

Invalid Parameters

404

Application not found

500

Internal Server Error

Error Codes

See Error Codes.