按标签查询资源
功能介绍
应用服务器可调用此接口查询绑定了指定标签的资源。当前支持标签的资源有Device(设备)。
调用方法
请参见如何调用API。
URI
POST /v5/iot/{project_id}/tags/query-resources
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
project_id |
是 |
String |
参数说明:项目ID。获取方法请参见 获取项目ID 。 |
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
limit |
否 |
Integer |
参数说明:分页查询时每页显示的记录数。 取值范围:1-50的整数,默认值为10。 最小值:1 最大值:50 缺省值:10 |
marker |
否 |
String |
参数说明:上一次分页查询结果中最后一条记录的ID,在上一次分页查询时由物联网平台返回获得。分页查询时物联网平台是按marker也就是记录ID降序查询的,越新的数据记录ID也会越大。若填写marker,则本次只查询记录ID小于marker的数据记录。若不填写,则从记录ID最大也就是最新的一条数据开始查询。如果需要依次查询所有数据,则每次查询时必须填写上一次查询响应中的marker值。 取值范围:长度为24的十六进制字符串,默认值为ffffffffffffffffffffffff。 缺省值:ffffffffffffffffffffffff |
offset |
否 |
Integer |
参数说明:表示从marker后偏移offset条记录开始查询。当offset为0时,表示从marker后第一条记录开始输出。限制offset最大值是出于API性能考虑,您可以搭配marker使用该参数实现翻页,例如每页50条记录,1-11页内都可以直接使用offset跳转到指定页,但到11页后,由于offset限制为500,您需要使用第11页返回的marker作为下次查询的marker,以实现翻页到12-22页。 取值范围:0-500的整数,默认为0。 最小值:0 最大值:500 缺省值:0 |
请求参数
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
X-Auth-Token |
否 |
String |
参数说明:用户Token。通过调用IAM服务 获取IAM用户Token接口获取,接口返回的响应消息头中“X-Subject-Token”就是需要获取的用户Token。简要的获取方法样例请参见 Token认证。 |
Instance-Id |
否 |
String |
参数说明:实例ID。物理多租下各实例的唯一标识,建议携带该参数,在使用专业版时必须携带该参数。您可以在IoTDA管理控制台界面,选择左侧导航栏“总览”页签查看当前实例的ID,具体获取方式请参考查看实例详情 。 |
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
resource_type |
是 |
String |
参数说明:要查询的资源类型,当前支持设备(device)。 |
tags |
是 |
Array of TagV5DTO objects |
参数说明:标签列表,支持按照标签key和value组合查询,传入的多个标签之间是或的关系。 |
响应参数
状态码: 200
参数 |
参数类型 |
描述 |
---|---|---|
resources |
Array of ResourceDTO objects |
资源列表。 |
page |
Page object |
查询结果的分页信息。 |
请求示例
按标签查询资源,备查询绑定了指定标签的设备。
POST https://{endpoint}/v5/iot/{project_id}/tags/query-resources { "resource_type" : "device", "tags" : [ { "tag_key" : "testTagName", "tag_value" : "testTagValue" } ] }
响应示例
状态码: 200
OK
{ "resources" : [ { "resource_id" : "d4922d8a" } ], "page" : { "count" : 10, "marker" : "5c90fa7d3c4e4405e8525079" } }
SDK代码示例
SDK代码示例如下。
Java
按标签查询资源,备查询绑定了指定标签的设备。
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package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.AbstractCredentials; 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.iotda.v5.region.IoTDARegion; import com.huaweicloud.sdk.iotda.v5.*; import com.huaweicloud.sdk.iotda.v5.model.*; import java.util.List; import java.util.ArrayList; public class ListResourcesByTagsSolution { 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() .withDerivedPredicate(AbstractCredentials.DEFAULT_DERIVED_PREDICATE) // Used in derivative ak/sk authentication scenarios .withAk(ak) .withSk(sk); IoTDAClient client = IoTDAClient.newBuilder() .withCredential(auth) .withRegion(IoTDARegion.valueOf("<YOUR REGION>")) .build(); ListResourcesByTagsRequest request = new ListResourcesByTagsRequest(); request.withLimit(<limit>); request.withMarker("<marker>"); request.withOffset(<offset>); QueryResourceByTagsDTO body = new QueryResourceByTagsDTO(); List<TagV5DTO> listbodyTags = new ArrayList<>(); listbodyTags.add( new TagV5DTO() .withTagKey("testTagName") .withTagValue("testTagValue") ); body.withTags(listbodyTags); body.withResourceType("device"); request.withBody(body); try { ListResourcesByTagsResponse response = client.listResourcesByTags(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
按标签查询资源,备查询绑定了指定标签的设备。
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# coding: utf-8 from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkcore.auth.credentials import DerivedCredentials from huaweicloudsdkiotda.v5.region.iotda_region import IoTDARegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkiotda.v5 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 = __import__('os').getenv("CLOUD_SDK_AK") sk = __import__('os').getenv("CLOUD_SDK_SK") credentials = BasicCredentials(ak, sk) \ .with_derived_predicate(DerivedCredentials.get_default_derived_predicate()) \ client = IoTDAClient.new_builder() \ .with_credentials(credentials) \ .with_region(IoTDARegion.value_of("<YOUR REGION>")) \ .build() try: request = ListResourcesByTagsRequest() request.limit = <limit> request.marker = "<marker>" request.offset = <offset> listTagsbody = [ TagV5DTO( tag_key="testTagName", tag_value="testTagValue" ) ] request.body = QueryResourceByTagsDTO( tags=listTagsbody, resource_type="device" ) response = client.list_resources_by_tags(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
按标签查询资源,备查询绑定了指定标签的设备。
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package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" iotda "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/iotda/v5" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/iotda/v5/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/iotda/v5/region" core_auth "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth" ) 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). WithDerivedPredicate(core_auth.GetDefaultDerivedPredicate()). // Used in derivative ak/sk authentication scenarios Build() client := iotda.NewIoTDAClient( iotda.IoTDAClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.ListResourcesByTagsRequest{} limitRequest:= int32(<limit>) request.Limit = &limitRequest markerRequest:= "<marker>" request.Marker = &markerRequest offsetRequest:= int32(<offset>) request.Offset = &offsetRequest tagValueTags:= "testTagValue" var listTagsbody = []model.TagV5Dto{ { TagKey: "testTagName", TagValue: &tagValueTags, }, } request.Body = &model.QueryResourceByTagsDto{ Tags: listTagsbody, ResourceType: "device", } response, err := client.ListResourcesByTags(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
更多
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 |
OK |
400 |
Bad Request |
403 |
Forbidden |
404 |
Not Found |
500 |
Internal Server Error |
错误码
请参见错误码。