Updated on 2024-03-28 GMT+08:00

Querying DNAT Rules

Function

This API is used to query DNAT rules.

Constraints

You can type the question mark (?) and ampersand (&) at the end of the URI to define multiple search criteria. All optional parameters can be filtered. For details, see the example request.

Calling Method

For details, see Calling APIs.

URI

GET /v3/{project_id}/private-nat/dnat-rules

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Specifies the project ID.

Minimum: 1

Maximum: 36

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

limit

No

Integer

Specifies the number of records displayed on each page. The value ranges from 0 to 2000. Default value: 2000

Minimum: 1

Maximum: 2000

Default: 2000

marker

No

String

Specifies the start resource ID of pagination query. If the parameter is left blank, only resources on the first page are queried. The value is obtained from next_marker or previous_marker in PageInfo queried last time.

Minimum: 36

Maximum: 36

page_reverse

No

Boolean

Specifies whether to query the previous page.

id

No

Array

Specifies the DNAT rule ID.

Array Length: 1 - 10

project_id

No

Array

Specifies the project ID.

Array Length: 1 - 10

enterprise_project_id

No

Array

Specifies the ID of the enterprise project that is associated with the DNAT rule when the DNAT rule is being created.

Array Length: 1 - 10

description

No

Array

Provides supplementary information about the DNAT rule. The description can contain up to 255 characters and cannot contain angle brackets (<>).

Array Length: 1 - 10

gateway_id

No

Array

Specifies the private NAT gateway ID.

Array Length: 1 - 10

transit_ip_id

No

Array

Specifies the ID of the transit IP address.

Array Length: 1 - 10

external_ip_address

No

Array

Specifies the transit IP address.

Array Length: 1 - 10

network_interface_id

No

Array

Specifies the network interface ID. Network interfaces of an Elastic Cloud Server (ECS), load balancer, or virtual IP address are supported.

Array Length: 1 - 10

type

No

Array

Specifies the backend resource type of the DNAT rule. The type can be: COMPUTE: The backend resource is a compute instance. VIP: The backend resource is a virtual IP address. ELB: The backend resource is a shared load balancer. ELBv3: The backend resource is a dedicated load balancer. CUSTOMIZE: The backend resource is a user-defined IP address.

Array Length: 1 - 10

private_ip_address

No

Array

Specifies the private IP address of the backend instance.

Array Length: 1 - 10

Request Parameters

Table 3 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Specifies the user token. It is a response to the API used to obtain a user token. This API is the only one that does not require authentication. The value of X-Subject-Token in the response header is the token value.

Minimum: 1

Maximum: 10240

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

dnat_rules

Array of PrivateDnat objects

Specifies the response body for querying DNAT rules.

Array Length: 0 - 2000

request_id

String

Specifies the request ID.

Minimum: 1

Maximum: 36

page_info

PageInfo object

Specifies the pagination information.

Table 5 PrivateDnat

Parameter

Type

Description

id

String

Specifies the DNAT rule ID.

Minimum: 36

Maximum: 36

project_id

String

Specifies the project ID.

Minimum: 36

Maximum: 36

description

String

Provides supplementary information about the DNAT rule. The description can contain up to 255 characters and cannot contain angle brackets (<>).

Minimum: 1

Maximum: 36

transit_ip_id

String

Specifies the ID of the transit IP address.

Minimum: 36

Maximum: 36

gateway_id

String

Specifies the private NAT gateway ID.

Minimum: 1

Maximum: 36

network_interface_id

String

Specifies the network interface ID. Network interfaces of a compute instance, load balancer, virtual IP address are supported.

Minimum: 1

Maximum: 36

type

String

Specifies the backend resource type of the DNAT rule. The type can be: COMPUTE: The backend resource is a compute instance. VIP: The backend resource is a virtual IP address. ELB: The backend resource is a load balancer. ELBv3: The backend resource is a dedicated load balancer. CUSTOMIZE: The backend resource is a user-defined IP address.

Minimum: 1

Maximum: 10

protocol

String

Specifies the protocol type. TCP, UDP, and ANY are supported. The protocol number of TCP, UDP, and ANY are 6, 17, and 0, respectively.

Minimum: 1

Maximum: 3

Enumeration values:

  • tcp

  • udp

  • any

private_ip_address

String

Specifies the private IP address of the backend instance.

Minimum: 7

Maximum: 15

internal_service_port

String

Specifies the port number of the backend instance.

Minimum: 0

Maximum: 65535

Minimum: 1

Maximum: 5

transit_service_port

String

Specifies the port number of the transit IP address.

Minimum: 0

Maximum: 65535

Minimum: 1

Maximum: 5

enterprise_project_id

String

Specifies the ID of the enterprise project that is associated with the DNAT rule when the DNAT rule is being created.

Minimum: 1

Maximum: 36

created_at

String

Specifies when the DNAT rule was created. It is a UTC time in the yyyy-mm-ddThh:mm:ssZ format.

Minimum: 1

Maximum: 36

updated_at

String

Specifies when the DNAT rule was updated. It is a UTC time in the yyyy-mm-ddThh:mm:ssZ format.

Minimum: 1

Maximum: 36

Table 6 PageInfo

Parameter

Type

Description

next_marker

String

Specifies the ID of the last record in this query, which can be used in the next query.

Minimum: 1

Maximum: 36

previous_marker

String

Specifies the ID of the first record in the pagination query result. When page_reverse is set to true, this parameter is used together to query resources on the previous page.

Minimum: 1

Maximum: 36

current_count

Integer

Specifies the ID of the last record in the pagination query result. It is usually used to query resources on the next page.

Minimum: 1

Maximum: 2000

Example Requests

GET https://{Endpoint}/v3/da261828016849188f4dcc2ef94d9da9/private-nat/dnat-rules

Example Responses

Status code: 200

DNAT rules queried.

{
  "dnat_rules" : [ {
    "id" : "24dd6bf5-48f2-4915-ad0b-5bb111d39c83",
    "project_id" : "da261828016849188f4dcc2ef94d9da9",
    "description" : "aa",
    "gateway_id" : "0adefb29-a6c2-48a5-8637-2be67fa03fec",
    "transit_ip_id" : "3faa719d-6d18-4ccb-a5c7-33e65a09663e",
    "enterprise_project_id" : "2759da7b-8015-404c-ae0a-a389007b0e2a",
    "network_interface_id" : "dae9393a-b536-491c-a5a2-72edc1104707",
    "type" : "COMPUTE",
    "protocol" : "any",
    "internal_service_port" : "0",
    "transit_service_port" : "0",
    "private_ip_address" : "192.168.1.72",
    "created_at" : "2019-04-29T07:10:01",
    "updated_at" : "2019-04-29T07:10:01"
  }, {
    "id" : "25dcdb21-97de-43cd-b476-31637a47f05d",
    "project_id" : "da261828016849188f4dcc2ef94d9da9",
    "description" : "aa",
    "gateway_id" : "0adefb29-a6c2-48a5-8637-2be67fa03fec",
    "transit_ip_id" : "15abdf29-4a68-474c-9963-79c4e6d495d7",
    "enterprise_project_id" : "2759da7b-8015-404c-ae0a-a389007b0e2a",
    "network_interface_id" : "9e2f0dbb-68b2-4c4b-9298-fa4f13187976",
    "type" : "COMPUTE",
    "protocol" : "any",
    "internal_service_port" : "0",
    "transit_service_port" : "0",
    "private_ip_address" : "192.168.1.99",
    "created_at" : "2019-04-29T07:15:41",
    "updated_at" : "2019-04-29T07:15:41"
  } ],
  "request_id" : "a7b00469-5a31-4274-bb10-59167243383e",
  "page_info" : {
    "previous_marker" : "14338426-6afe-4019-996b-018008113013",
    "current_count" : 2
  }
}

SDK Sample Code

The SDK sample code is as follows.

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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.*;

import java.util.List;
import java.util.ArrayList;

public class ListPrivateDnatsSolution {

    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 = "&lt;project_id&gt;";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        NatClient client = NatClient.newBuilder()
                .withCredential(auth)
                .withRegion(NatRegion.valueOf("<YOUR REGION>"))
                .build();
        ListPrivateDnatsRequest request = new ListPrivateDnatsRequest();
        request.withLimit(<limit>);
        request.withMarker("<marker>");
        request.withPageReverse(<page_reverse>);
        request.withId();
        request.withEnterpriseProjectId();
        request.withDescription();
        request.withGatewayId();
        request.withTransitIpId();
        request.withExternalIpAddress();
        request.withNetworkInterfaceId();
        request.withType();
        request.withPrivateIpAddress();
        try {
            ListPrivateDnatsResponse response = client.listPrivateDnats(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

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 = __import__('os').getenv("CLOUD_SDK_AK")
    sk = __import__('os').getenv("CLOUD_SDK_SK")
    projectId = "&lt;project_id&gt;"

    credentials = BasicCredentials(ak, sk, projectId) \

    client = NatClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(NatRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListPrivateDnatsRequest()
        request.limit = <limit>
        request.marker = "<marker>"
        request.page_reverse = <PageReverse>
        request.id = 
        request.enterprise_project_id = 
        request.description = 
        request.gateway_id = 
        request.transit_ip_id = 
        request.external_ip_address = 
        request.network_interface_id = 
        request.type = 
        request.private_ip_address = 
        response = client.list_private_dnats(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"
    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 := "&lt;project_id&gt;"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := nat.NewNatClient(
        nat.NatClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListPrivateDnatsRequest{}
	limitRequest:= int32(<limit>)
	request.Limit = &limitRequest
	markerRequest:= "<marker>"
	request.Marker = &markerRequest
	pageReverseRequest:= <page_reverse>
	request.PageReverse = &pageReverseRequest
	response, err := client.ListPrivateDnats(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

DNAT rules queried.

Error Codes

See Error Codes.