更新时间:2024-10-23 GMT+08:00
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查询设备策略详情

功能介绍

应用服务器可调用此接口在物联网平台查询指定策略ID的详细信息。

调用方法

请参见如何调用API

URI

GET /v5/iot/{project_id}/device-policies/{policy_id}

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

参数说明:项目ID。获取方法请参见 获取项目ID

policy_id

String

策略ID

请求参数

表2 请求Header参数

参数

是否必选

参数类型

描述

X-Auth-Token

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

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

响应参数

状态码: 200

表3 响应Body参数

参数

参数类型

描述

app_id

String

参数说明:资源空间ID。

policy_id

String

策略ID。

policy_name

String

策略名称。

statement

Array of Statement objects

策略文档。

create_time

String

在物联网平台创建策略的时间。格式:yyyyMMdd'T'HHmmss'Z',如20151212T121212Z。

update_time

String

在物联网平台更新策略的时间。格式:yyyyMMdd'T'HHmmss'Z',如20151212T121212Z。

表4 Statement

参数

参数类型

描述

effect

String

指定是允许还是拒绝该操作。既有允许(ALLOW)又有拒绝(DENY)的授权语句时,遵循拒绝(DENY)优先的原则。

  • ALLOW:允许。

  • DENY:拒绝。

actions

Array of strings

用于指定策略允许或拒绝的操作。格式为:服务名:资源:操作。当前支持的操作类型如下:

  • iotda:devices:publish:设备使用MQTT协议发布消息。

  • iotda:devices:subscribe:设备使用MQTT协议订阅消息。

resources

Array of strings

用于指定允许或拒绝对其执行操作的资源。格式为:资源类型:资源名称。如设备订阅的资源为:topic:/v1/${devices.deviceId}/test/hello。

取值范围:资源列表长度最小为1,最大为10,列表中的资源取值范围:仅支持字母,数字,以及/{}$=+#?*:._-组合。

请求示例

查询指定id的设备策略详情

GET https://{endpoint}/v5/iot/{project_id}/device-policies/{policy_id}

响应示例

状态码: 200

OK

{
  "app_id" : "jeQDJQZltU8iKgFFoW060F5SGZka",
  "policy_id" : "d4922d8a-6c8e-4396-852c-164aefa6638f",
  "policy_name" : "myPolicy",
  "statement" : [ {
    "effect" : "ALLOW",
    "actions" : [ "iotda:devices:publish", "iotda:devices:subscribe" ],
    "resources" : [ "topic:/v1/${devices.deviceId}/test/hello", "topic:/v1/${devices.productId}/test/hello" ]
  } ],
  "create_time" : "20230810T070547Z",
  "update_time" : "20230810T070547Z"
}

SDK代码示例

SDK代码示例如下。

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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.core.region.Region;
import com.huaweicloud.sdk.iotda.v5.*;
import com.huaweicloud.sdk.iotda.v5.model.*;


public class ShowDevicePolicySolution {

    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");
        // ENDPOINT:请在控制台的"总览"界面的"平台接入地址"中查看“应用侧”的https接入地址。
        String iotdaEndpoint = "<YOUR ENDPOINT>";
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                // 标准版/企业版需要使用衍生算法,基础版请删除配置"withDerivedPredicate";
                .withDerivedPredicate(AbstractCredentials.DEFAULT_DERIVED_PREDICATE) // Used in derivative ak/sk authentication scenarios
                .withAk(ak)
                .withSk(sk);

        IoTDAClient client = IoTDAClient.newBuilder()
                .withCredential(auth)
                // 标准版/企业版:需自行创建Region对象,基础版:请使用IoTDARegion的region对象,如"withRegion(IoTDARegion.CN_NORTH_4)"
                .withRegion(new Region("cn-north-4", iotdaEndpoint))
                .build();
        ShowDevicePolicyRequest request = new ShowDevicePolicyRequest();
        request.withPolicyId("{policy_id}");
        try {
            ShowDevicePolicyResponse response = client.showDevicePolicy(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());
        }
    }
}
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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkcore.auth.credentials import DerivedCredentials
from huaweicloudsdkcore.region.region import Region as coreRegion
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 = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    // ENDPOINT请在控制台的"总览"界面的"平台接入地址"中查看应用侧的https接入地址
    iotdaEndpoint = "<YOUR ENDPOINT>";
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId).with_derived_predicate(DerivedCredentials.get_default_derived_predicate())

    client = IoTDAClient.new_builder() \
        .with_credentials(credentials) \
        # 标准版/企业版:需要使用自行创建的Region对象,基础版:请选择IoTDAClient中的Region对象 如: .with_region(IoTDARegion.CN_NORTH_4)
        .with_region(coreRegion(id="cn-north-4", endpoint=endpoint)) \
        .build()

    try:
        request = ShowDevicePolicyRequest()
        request.policy_id = "{policy_id}"
        response = client.show_device_policy(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
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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/core/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")
    // endpoint:请在控制台的"总览"界面的"平台接入地址"中查看"应用侧"的https接入地址
    endpoint := "<YOUR ENDPOINT>"
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        // 企业版/标准版需要使用衍生算法,基础版请删除该配置"WithDerivedPredicate"
        WithDerivedPredicate(core_auth.GetDefaultDerivedPredicate()). // Used in derivative ak/sk authentication scenarios
        Build()

    client := iotda.NewIoTDAClient(
        iotda.IoTDAClientBuilder().
            // 标准版/企业版需要自行创建region,基础版使用IoTDARegion中的region对象
            WithRegion(region.NewRegion("cn-north-4", endpoint)).
            WithCredential(auth).
            Build())

    request := &model.ShowDevicePolicyRequest{}
	request.PolicyId = "{policy_id}"
	response, err := client.ShowDevicePolicy(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

OK

400

Bad Request

401

Unauthorized

403

Forbidden

404

Not Found

500

Internal Server Error

错误码

请参见错误码

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