查询消息
功能介绍
查询消息。
调用方法
请参见如何调用API。
URI
GET /v2/{engine}/{project_id}/instances/{instance_id}/messages
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
engine |
是 |
String |
消息引擎。 |
project_id |
是 |
String |
项目ID,获取方式请参见获取项目ID。 |
instance_id |
是 |
String |
实例ID。 |
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
topic |
是 |
String |
主题名称。 |
limit |
否 |
String |
查询数量。 |
offset |
否 |
String |
偏移量,表示从此偏移量开始查询, offset大于等于0。 |
key |
否 |
String |
消息的key。 |
start_time |
否 |
String |
开始时间(不通过msg_id精确查询消息时,此参数必填)。 |
end_time |
否 |
String |
结束时间(不通过msg_id精确查询消息时,此参数必填)。 |
msg_id |
否 |
String |
消息ID。 |
请求参数
无
响应参数
状态码: 200
参数 |
参数类型 |
描述 |
---|---|---|
messages |
Array of Message objects |
消息列表。 |
total |
Number |
消息总数。 |
参数 |
参数类型 |
描述 |
---|---|---|
msg_id |
String |
消息ID。 |
instance_id |
String |
实例ID。 |
topic |
String |
主题名称。 |
store_timestamp |
Number |
存储消息的时间。 |
born_timestamp |
Number |
产生消息的时间。 |
reconsume_times |
Integer |
重试次数。 |
body |
String |
消息体。 |
body_crc |
Number |
消息体校验和。 |
store_size |
Number |
存储大小。 |
property_list |
Array of property_list objects |
消息属性列表。 |
born_host |
String |
产生消息的主机IP。 |
store_host |
String |
存储消息的主机IP。 |
queue_id |
Integer |
队列ID。 |
queue_offset |
Integer |
在队列中的偏移量。 |
请求示例
查询消息。
GET https://{endpoint}/v2/{engine}/{project_id}/instances/{instance_id}/messages?topic={topic}
响应示例
状态码: 200
查询消息成功。
{ "messages" : [ { "msg_id" : "C0A807C9000027740000000000000030", "instance_id" : "11c45539-xxxx-xxxx-xxxx-812c41f61f30", "topic" : "topic-test", "store_timestamp" : 1648888166319, "born_timestamp" : 1648888166275, "reconsume_times" : 0, "body" : "xxxx", "body_crc" : 1932557065, "store_size" : 175, "property_list" : [ { "name" : "KEYS", "value" : "" }, { "name" : "UNIQ_KEY", "value" : "7F00000123DC6E0BE85808B037820000" }, { "name" : "CLUSTER", "value" : "DmsCluster" }, { "name" : "TAGS", "value" : "" } ], "born_host" : "192.168.0.66:50098", "store_host" : "192.168.7.201:10100", "queue_id" : 2, "queue_offset" : 0 } ], "total" : 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 49 |
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.rocketmq.v2.region.RocketMQRegion; import com.huaweicloud.sdk.rocketmq.v2.*; import com.huaweicloud.sdk.rocketmq.v2.model.*; public class ListMessagesSolution { 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); RocketMQClient client = RocketMQClient.newBuilder() .withCredential(auth) .withRegion(RocketMQRegion.valueOf("<YOUR REGION>")) .build(); ListMessagesRequest request = new ListMessagesRequest(); request.withEngine(ListMessagesRequest.EngineEnum.fromValue("{engine}")); request.withInstanceId("{instance_id}"); try { ListMessagesResponse response = client.listMessages(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 33 |
# coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkrocketmq.v2.region.rocketmq_region import RocketMQRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkrocketmq.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 = RocketMQClient.new_builder() \ .with_credentials(credentials) \ .with_region(RocketMQRegion.value_of("<YOUR REGION>")) \ .build() try: request = ListMessagesRequest() request.engine = "{engine}" request.instance_id = "{instance_id}" response = client.list_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 39 |
package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" rocketmq "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/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 := rocketmq.NewRocketMQClient( rocketmq.RocketMQClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.ListMessagesRequest{} request.Engine = model.GetListMessagesRequestEngineEnum().ENGINE request.InstanceId = "{instance_id}" response, err := client.ListMessages(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 |
查询消息成功。 |
错误码
请参见错误码。