更新时间:2024-07-09 GMT+08:00

查询消息

功能介绍

查询消息的偏移量和消息内容。

先根据时间戳查询消息的偏移量,再根据偏移量查询消息内容。

调用方法

请参见如何调用API

URI

GET /v2/{project_id}/instances/{instance_id}/messages

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

项目ID,获取方式请参见获取项目ID

instance_id

String

实例ID。

表2 Query参数

参数

是否必选

参数类型

描述

topic

String

Topic名称。

Topic名称必须以字母开头且只支持大小写字母、中横线、下划线以及数字。

asc

Boolean

是否按照时间排序。

start_time

String

开始时间。

Unix毫秒时间戳。

查询消息偏移量时,为必选参数。

end_time

String

结束时间。

Unix毫秒时间戳。

查询消息偏移量时,为必选参数。

limit

String

每一页显示的message数量。

offset

String

页数。

download

Boolean

是否下载。

message_offset

String

消息偏移量。

查询消息内容时,为必选参数。

若start_time、end_time参数不为空,该参数无效。

partition

String

分区。

查询消息内容时,为必选参数。

若start_time、end_time参数不为空,该参数无效。

keyword

String

关键词。

取值范围为0~50。

请求参数

响应参数

状态码: 200

表3 响应Body参数

参数

参数类型

描述

messages

Array of MessagesEntity objects

消息列表。

total

Long

消息总条数。

size

Long

每页消息条数。

表4 MessagesEntity

参数

参数类型

描述

topic

String

topic名称。

partition

Integer

消息所在的分区。

key

String

消息key。

value

String

消息内容。

size

Integer

消息大小。

timestamp

Long

生产消息的时间。 格式为Unix时间戳。单位为毫秒。

huge_message

Boolean

大数据标识。

message_offset

Long

消息偏移量。

message_id

String

消息ID。

app_id

String

应用ID。

tag

String

消息标签。

状态码: 400

表5 响应Body参数

参数

参数类型

描述

error_code

String

错误码。

error_msg

String

错误描述。

状态码: 403

表6 响应Body参数

参数

参数类型

描述

error_code

String

错误码。

error_msg

String

错误描述。

请求示例

  • 查询消息偏移量。

    GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/messages?asc=false&end_time=1608609032042&limit=10&offset=0&start_time=1608608432042&topic=topic-test
  • 查询消息内容。

    GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/messages?download=false&message_offset=0&partition=0&topic=topic-test

响应示例

状态码: 200

查询成功。

{
  "messages" : [ {
    "topic" : "topic-test",
    "partition" : 0,
    "value" : "hello world",
    "size" : 21,
    "timestamp" : 1607598463502,
    "huge_message" : false,
    "message_offset" : 4,
    "message_id" : "",
    "app_id" : "",
    "tag" : ""
  } ],
  "total" : 1,
  "size" : 1
}

SDK代码示例

SDK代码示例如下。

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
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.kafka.v2.region.KafkaRegion;
import com.huaweicloud.sdk.kafka.v2.*;
import com.huaweicloud.sdk.kafka.v2.model.*;


public class ShowInstanceMessagesSolution {

    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");
        String projectId = "{project_id}";

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

        KafkaClient client = KafkaClient.newBuilder()
                .withCredential(auth)
                .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowInstanceMessagesRequest request = new ShowInstanceMessagesRequest();
        request.withInstanceId("{instance_id}");
        try {
            ShowInstanceMessagesResponse response = client.showInstanceMessages(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());
        }
    }
}
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkafka.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"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

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

    try:
        request = ShowInstanceMessagesRequest()
        request.instance_id = "{instance_id}"
        response = client.show_instance_messages(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/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")
    projectId := "{project_id}"

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

    client := kafka.NewKafkaClient(
        kafka.KafkaClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowInstanceMessagesRequest{}
	request.InstanceId = "{instance_id}"
	response, err := client.ShowInstanceMessages(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。

状态码

状态码

描述

200

查询成功。

400

参数无效。

403

鉴权失败。

错误码

请参见错误码