EnOS Edge API 快速入门¶
该教程通过一个例子带着你完成你的第一个EnOS API调用任务。
前提条件¶
调用EnOS Edge API需完成以下准备:
获取服务账号
已获取用于调用API时,用于身份授权的服务账号。详细步骤,参考 API鉴权。
获取资源权限
服务账号已取得系统中相关资源的访问权限。详细信息,参考 管理服务账号。
准备开发环境
安装EnOS提供的SDK,准备调用API的基础环境。参考以下详细介绍:
使用Java调用SDK¶
使用Java调用SDK,需要安装Java core SDK(Poseidon)V0.1.7及以上版本。Poseidon支持Java 7及以上版本。
使用Java core SDK调用接入和资产等服务,需要安装Device And Asset API Pojo SDK V0.2.3及以上版本。
安装方法¶
Java core SDK(Poseidon)
访问 Maven仓库,下载Poseidon Jar安装包,在应用中引入Jar安装包。如果应用使用 pom
工程,则在 pom.xml
文件中加入以下依赖:
<dependency>
<groupId>com.envisioniot</groupId>
<artifactId>apim-poseidon</artifactId>
<version>0.1.8</version>
</dependency>
Device and Asset API Pojo SDK
访问 Maven仓库,下载Jar安装包,在应用中引入Jar安装包。如果应用使用 pom
工程,则在 pom.xml
文件中加入以下依赖:
<dependency>
<groupId>com.envisioniot</groupId>
<artifactId>enos-dm-api-pojo</artifactId>
<version>0.2.3</version>
</dependency>
使用方法¶
同步请求
关闭API日志功能,调用API后仅返回调用结果。示例代码如下:
Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey)) .url("https://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}") .method("GET") .sync();
开启API日志功能,调用API后返回带时间戳的调用参数和调用结果。示例代码如下:
Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug()) .url("http://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}") .method("GET") .sync();
POST请求,示例代码如下:
Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug()) .url("https://{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}") .method("POST") .header("Content-Type", "application/json") .requestBody( "{\n" + " \"op\": \"pl\",\n" + " \"offset\": 0,\n" + " \"limit\": 10\n" + "}") .sync();
备注
Request header为可选,可按需将请求内容的类型等规范包含在header中。
异步请求
示例代码如下:
Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey))
.url("http://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}")
.method("GET").async( new PoseidonListener() {
@Override
public void onFailure(String errorMessage) {
// TODO
}
@Override
public void onResponse(String body) {
// TODO
}
});
支持Request和Response
Request内置支持Header,Query,RequestBody,Path参数。Request和Response的使用方法,参考 示例3和示例4。
异常处理
调用API的异常情况,可捕获PoseidonException异常查看具体问题。API服务报错,可根据错误码,参考各API的说明文档。
PoseidonException返回的常见报错信息和说明如下:
错误码 |
错误码描述 |
错误信息 |
错误原因 |
---|---|---|---|
400 |
Bad Request |
Cannot process request body |
获取request body失败 |
413 |
Payload Too Large |
Request size limit exceeded |
超出请求大小限制 |
500 |
Internal Server Error |
An unexpected error occurred |
系统内部错误 |
使用Python调用SDK¶
使用Python调用SDK,需要安装Python core SDK(Athena)V0.1.1及以上版本。Athena支持Python 3.6及以上版本。
安装方法¶
通过以下pip命令安装:
pip install aphrodite
使用方法¶
Query
from poseidon import poseidon
accessKey = 'accessKey'
secretKey = 'secretKey'
url = 'http://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}'
req = poseidon.urlopen(accessKey, secretKey, url)
print(req)
Header
from poseidon import poseidon
accessKey = 'accessKey'
secretKey = 'secretKey'
url = 'http://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}'
header={}
req = poseidon.urlopen(accessKey, secretKey, url, None, header)
print(req)
Body
from poseidon import poseidon
accessKey = 'accessKey'
secretKey = 'secretKey'
url = 'http://{apigw-address}/{service-name}/{api-version}/{api_name}?{param1=value1¶m2=value2}'
data = {"username": "abc", "password": "123"}
req = poseidon.urlopen(accesskey, secretkey, url, data)
print(req)
调用EnOS Edge API¶
开发环境准备完成后,参考各API接口文档中的参数说明和调用示例,调用API。
示例1 - 使用Java core SDK(GET方法)¶
以下示例为使用Java core SDK调用Get Asset API获取资产详细信息(关闭API日志功能):
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
public class GetAsset {
public static void main(String[] args) {
String accessKey = "{access_key_of_the_application}";
String secretKey = "{secret_key_of_the_application}";
String response = Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey))
.url("http://{apigw-address}/asset-service/v2.1/assets?action=get&orgId={org_id}&assetId={asset_id}")
.method("GET")
.sync();
System.out.println(response);
}
}
以上示例代码运行完成后,返回数据示例为:
{
"msg": OK,
"code": 0,
"data": {
"modelId": "model_id",
"assetId": "asset_id",
"timezone": "+08:00",
"name": {
"i18nValue": {},
"defaultValue": "asset_name"
},
"attributes": {
"system": "System"
},
"modelIdPath": null,
"orgId": "yourOrgId",
"desc": null,
"tags": {}
},
"requestId": "9a5cfbac-b2f8-4a37-b38d-8bccdd77d073"
}
示例2 - 使用Java core SDK(POST方法)¶
以下示例为使用Java core SDK调用Update Asset API更新资产的名称、描述、属性、时区、标签信息(开启API日志功能):
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
public class UpdateAsset {
public static void main(String[] args) {
String accessKey = "{access_key_of_the_application}";
String secretKey = "{secret_key_of_the_application}";
String data = "{\"asset\":{\"assetId\":\"{asset_id}\",\"name\":{\"defaultValue\":\"Device_Name\",\"i18nValue\":{\"en_US\":\"Device_Name\",\"zh_CN\":\"Chinese name\"}},\"description\":\"Device_Description\",\"attributes\":{\"Brand\":\"Brand_Name\"},\"timezone\":\"+07:00\",\"tags\":{\"year\":\"2019\",\"site\":\"Site_Name\"}}}";
String response = Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug())
.url("http://{apigw-address}/asset-service/v2.1/assets?action=update&orgId={org_id}")
.method("POST")
.requestBody(data)
.sync();
System.out.println(response);
}
}
以上示例代码运行完成后,返回数据示例为:
2019-7-10 16:35:12 [Poseidon] url: http://{apigw-address}/asset-service/v2.1/assets?action=update&orgId={org_id}
2019-7-10 16:35:12 [Poseidon] method: POST
2019-7-10 16:35:12 [Poseidon] headers: {}
2019-7-10 16:35:12 [Poseidon] requestBody: {"asset":{"assetId":"{asset_id}","name":{"defaultValue":"Device_Name","i18nValue":{"en_US":"Device_Name","zh_CN":"Chinese name"}},"description":"Device_Description","attributes":{"Brand":"Brand_Name"},"timezone":"+07:00","tags":{"year":"2019","site":"Site_Name"}}}
2019-7-10 16:35:13 [Poseidon] responseBody: {"code":0,"msg":"OK","requestId":"9d6b9869-4ffd-4964-a8ff-d150a0d1a91f","data":null}
示例3 - 使用Java core SDK和Device and Asset API SDK(GET方法)¶
以下示例为使用Java core SDK和Device and Asset API Pojo SDK调用GET Asset API获取资产详细信息(开启API日志功能):
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
import com.envisioniot.enos.asset_service.v2_1.GetAssetRequest;
import com.envisioniot.enos.asset_service.v2_1.GetAssetResponse;
public class GetAsset {
private static String accessKey = "{access_key_of_the_application}";
private static String secretKey = "{secret_key_of_the_application}";
private static String orgId = "{org_id}";
private static String url = "http://{apigw-address}";
public static void main(String[] args) {
GetAssetRequest request = new GetAssetRequest();
request.setOrgId(orgId);
request.setAssetId("{asset_id}");
GetAssetResponse response = Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug())
.url(url)
.getResponse(request, request.getResponseClass());
System.out.println(response.getCode());
}
}
以上示例代码运行完成后,返回数据示例为:
2019-7-10 11:02:27 [Poseidon] url: http://{apigw-address}/asset-service/v2.1/assets?action=get&assetId={asset_id}&orgId={org_id}
2019-7-10 11:02:27 [Poseidon] method: GET
2019-7-10 11:02:27 [Poseidon] headers: {}
2019-7-10 11:02:27 [Poseidon] requestBody: null
2019-7-10 11:02:29 [Poseidon] responseBody:{
"msg": OK,
"code": 0,
"data": {
"modelId": "model_id",
"assetId": "asset_id",
"timezone": "+08:00",
"name": {
"i18nValue": {},
"defaultValue": "asset_name"
},
"attributes": {
"system": "System"
},
"modelIdPath": null,
"orgId": "yourOrgId",
"desc": null,
"tags": {}
},
"requestId": "39346a7e-1da8-42ec-9620-d44ef6e2e2b6"
}
示例4 - 使用Java core SDK和Device and Asset API SDK(POST方法)¶
以下示例为使用Java core SDK和Device and Asset API Pojo SDK调用Update Asset API更新资产的描述、属性、时区信息(开启API日志功能):
import com.envision.apim.poseidon.config.PConfig;
import com.envision.apim.poseidon.core.Poseidon;
import com.envisioniot.enos.asset_service.v2_1.UpdateAssetRequest;
import com.envisioniot.enos.asset_service.v2_1.UpdateAssetResponse;
import com.envisioniot.enos.asset_service.vo.AssetUpdateVo;
import java.util.HashMap;
import java.util.Map;
public class UpdateAsset {
private static String accessKey = "{access_key_of_the_application}";
private static String secretKey = "{secret_key_of_the_application}";
private static String orgId = "{org_id}";
private static String url = "http://{apigw-address}";
public static void main(String[] args) {
UpdateAssetRequest request = new UpdateAssetRequest();
request.setOrgId(orgId);
AssetUpdateVo asset = new AssetUpdateVo();
asset.setAssetId("{asset_id}");
Map<String, Object> newAttrs = new HashMap<>();
newAttrs.put("Brand","Brand_Name");
asset.setAttributes(newAttrs);
asset.setDescription("Device_Description");
asset.setTimezone("+08:00");
request.setAsset(asset);
request.setIsPatchUpdate(true);
UpdateAssetResponse response = Poseidon.config(PConfig.init().appKey(accessKey).appSecret(secretKey).debug())
.url(url)
.getResponse(request, request.getResponseClass());
System.out.println(response);
}
}
以上示例代码运行完成后,返回数据示例为:
2019-7-10 16:45:00 [Poseidon] url: http://{apigw-address}/asset-service/v2.1/assets?action=update&isPatchUpdate=true&orgId={org_id}
2019-7-10 16:45:00 [Poseidon] method: POST
2019-7-10 16:45:00 [Poseidon] headers: {}
2019-7-10 16:45:00 [Poseidon] requestBody: {"asset":{"assetId":"{asset_id}","attributes":{"Brand":"Brand_Name"},"description":"Device_Description","timezone":"+08:00"}}
2019-7-10 16:45:01 [Poseidon] responseBody: {"code":0,"msg":"OK","requestId":"4c1a6da8-bd89-4001-b8fd-5fa65ab816f2","data":null}