
# 查询项目支持的网关规格列表 - ListSpecs
#### 功能介绍
查询项目支持的网关规格列表。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-natgateway/nat_api_0053.html)。
#### 授权信息
账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。
- 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-natgateway/nat_api_0063.html)。
- 如果使用身份策略授权，当前API调用无需身份策略权限。
 
#### URI
GET /v3/{project_id}/private-nat/specs
表1路径参数 
| 参数         | 是否必选 | 参数类型   | 描述     |
|:---|:---|:---|:---|
| project_id | 是    | String | 项目的ID。 |
   
#### 请求参数
无
#### 响应参数
**状态码：200**
表2响应Body参数 
| 参数    | 参数类型                                               | 描述                |
|:---|:---|:---|
| specs | Array of [Spec] objects | 查询项目支持网关规格列表的响应体。 |
   
 表3Spec 
| 参数       | 参数类型    | 描述       |
|:---|:---|:---|
| name     | String  | 规格名称。    |
| code     | String  | 规格编号。    |
| cbc_code | String  | 规格cbc编码。 |
| rule_max | Integer | 最大规则数。   |
| sess_max | Integer | 最大连接数。   |
| bps_max  | Integer | 最大bps。   |
| pps_max  | Integer | 最大pps。   |
| qps_max  | Integer | 最大qps。   |
   
#### 请求示例
```
GET https://{Endpoint}/v3/70505c941b9b4dfd82fd351932328a2f/private-nat/specs
```
#### 响应示例
**状态码：200**
查询项目支持的网关规格列表成功
```
{
  "specs" : [ {
    "name" : "Small",
    "code" : "1",
    "cbc_code" : "privatenat_small",
    "rule_max" : 20,
    "sess_max" : 2000,
    "bps_max" : 233,
    "pps_max" : 20000,
    "qps_max" : 6000
  }, {
    "name" : "Medium",
    "code" : "2",
    "cbc_code" : "privatenat_medium",
    "rule_max" : 50,
    "sess_max" : 5000,
    "bps_max" : 584,
    "pps_max" : 50000,
    "qps_max" : 9000
  }, {
    "name" : "Large",
    "code" : "3",
    "cbc_code" : "privatenat_large",
    "rule_max" : 200,
    "sess_max" : 20000,
    "bps_max" : 2336,
    "pps_max" : 200000,
    "qps_max" : 10000
  }, {
    "name" : "Extra-large",
    "code" : "4",
    "cbc_code" : "privatenat_xlarge",
    "rule_max" : 500,
    "sess_max" : 50000,
    "bps_max" : 5840,
    "pps_max" : 500000,
    "qps_max" : 10000
  }, {
    "name" : "Extra-xlarge",
    "code" : "5",
    "cbc_code" : "privatenat_xxlarge",
    "rule_max" : 5000,
    "sess_max" : 500000,
    "bps_max" : 58400,
    "pps_max" : 5000000,
    "qps_max" : 100000
  } ]
}
```
#### SDK代码示例
SDK代码示例如下。
#### Java
```
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.nat.v2.region.NatRegion;
import com.huaweicloud.sdk.nat.v2.*;
import com.huaweicloud.sdk.nat.v2.model.*;
public class ListSpecsSolution {
    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);
        NatClient client = NatClient.newBuilder()
                .withCredential(auth)
                .withRegion(NatRegion.valueOf("<YOUR REGION>"))
                .build();
        ListSpecsRequest request = new ListSpecsRequest();
        try {
            ListSpecsResponse response = client.listSpecs(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
```
# coding: utf-8
import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdknat.v2.region.nat_region import NatRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdknat.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 = NatClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(NatRegion.value_of("<YOUR REGION>")) \
        .build()
    try:
        request = ListSpecsRequest()
        response = client.list_specs(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
```
package main
import (
"fmt"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    nat "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/nat/v2"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/nat/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/nat/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, err := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        SafeBuild()
    if err != nil {
        fmt.Println(err)
        return
    }
    hcClient, err := nat.NatClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()
    if err != nil {
        fmt.Println(err)
        return
    }
    client := nat.NewNatClient(hcClient)
    request := &model.ListSpecsRequest{}
response, err := client.ListSpecs(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](https://console.huaweicloud.com/apiexplorer/#/openapi/NAT/sdk?api=ListSpecs)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 | 查询项目支持的网关规格列表成功 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-natgateway/ErrorCode.html)。
