Querying Forwarding Rules

Function

This API is used to query all forwarding rules.

Constraints

This API has the following constraints:

Parameters marker, limit, and page_reverse are used for pagination query.
Parameters marker and page_reverse take effect only when they are used together with parameter limit.

Calling Method

For details, see Calling APIs.

URI

GET /v3/{project_id}/elb/l7policies/{l7policy_id}/rules

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Specifies the project ID.
l7policy_id	Yes	String	Specifies the forwarding policy ID.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
limit	No	Integer	Specifies the number of records on each page. The value ranges from 0 to 2,000, and the default value is 2,000.
marker	No	String	Specifies the ID of the last record on the previous page. Note: This parameter must be used together with limit. If this parameter is not specified, the first page will be queried. This parameter cannot be left blank or set to an invalid ID.
page_reverse	No	Boolean	Specifies whether to use reverse query. Values: true: Query the previous page. false (default): Query the next page. Note: This parameter must be used together with limit. If page_reverse is set to true and you want to query the previous page, set the value of marker to the value of previous_marker.
id	No	Array of strings	Specifies the forwarding rule ID. Multiple IDs can be queried in the format of id=xxx&id=xxx.
compare_type	No	Array of strings	Specifies how requests are matched with the domain names or URL. Values: EQUAL_TO: exact match. REGEX: regular expression match STARTS_WITH: prefix match Multiple values can be queried in the format of compare_type=xxx&compare_type=xxx.
provisioning_status	No	Array of strings	Specifies the provisioning status of the forwarding rule. The value can only be ACTIVE, indicating that the forwarding rule is provisioned successfully. Multiple provisioning statuses can be queried in the format of provisioning_status=xxx&provisioning_status=xxx.
invert	No	Boolean	Specifies whether reverse matching is supported. The value is fixed at false. This parameter can be updated but remains invalid.
admin_state_up	No	Boolean	Specifies the administrative status of the forwarding rule. This parameter is unsupported. Please do not use it.
value	No	Array of strings	Specifies the value of the match content. Multiple values can be queried in the format of value=xxx&value=xxx.
key	No	Array of strings	Specifies the key of the match content that is used to identify the forwarding rule. Multiple keys can be queried in the format of key=xxx&key=xxx. This parameter is unsupported. Please do not use it.
type	No	Array of strings	Specifies the match type. The value can be HOST_NAME or PATH. The type of forwarding rules for the same forwarding policy cannot be the same. Multiple types can be queried in the format of type=xxx&type=xxx.
enterprise_project_id	No	Array of strings	Specifies the enterprise project ID. If this parameter is not passed, resources in the default enterprise project are queried, and authentication is performed based on the default enterprise project. If this parameter is passed, its value can be the ID of an existing enterprise project (resources in the specific enterprise project are required) or all_granted_eps (resources in all enterprise projects are queried). Multiple IDs can be queried in the format of enterprise_project_id=xxx&enterprise_project_id=xxx.

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Specifies the token used for IAM authentication.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
request_id	String	Specifies the request ID. Note: The value is automatically generated.
page_info	PageInfo object	Shows pagination information.
rules	Array of L7Rule objects	Lists the forwarding rules.

**Table 5** PageInfo
Parameter	Type	Description
previous_marker	String	Specifies the ID of the first record in the pagination query result.
next_marker	String	Specifies the ID of the last record in the pagination query result.
current_count	Integer	Specifies the number of records.

**Table 6** L7Rule
Parameter	Type	Description
admin_state_up	Boolean	Specifies the administrative status of the forwarding rule. The default value is true. This parameter is unsupported. Please do not use it.
compare_type	String	Specifies how requests are matched with the domain name or URL. Value ranges: If type is set to HOST_NAME, this parameter can only be set to EQUAL_TO. If type is set to PATH, the value can be REGEX, STARTS_WITH, or EQUAL_TO.
key	String	Specifies the key of the match content. This parameter will not take effect if type is set to HOST_NAME or PATH.
project_id	String	Specifies the project ID.
type	String	Specifies the type of the forwarding rule. The value can be one of the following: HOST_NAME: A domain name will be used for matching. PATH: A URL will be used for matching. METHOD: An HTTP request method will be used for matching. HEADER: The request header will be used for matching. QUERY_STRING: A query string will be used for matching. SOURCE_IP: The source IP address will be used for matching. COOKIE: The cookie will be used for matching. Notes and constraints: If type is set to HOST_NAME, PATH, METHOD, or SOURCE_IP, only one forwarding rule can be created for each type. If type is set to HEADER and QUERY_STRING, multiple forwarding rules can be created for each type.
value	String	Specifies the value of the match item. For example, if a domain name is used for matching, value is the domain name. Notes and constraints: This parameter will take effect only when conditions is left blank. If type is set to HOST_NAME, the value can contain letters, digits, hyphens (-), and periods (.) and must start with a letter or digit. If you want to use a wildcard domain name, enter an asterisk () as the leftmost label of the domain name. If type* is set to PATH and compare_type to STARTS_WITH or EQUAL_TO, the value must start with a slash (/) and can contain only letters, digits, and special characters _~';@^-%#&$.+?,=!:\|\/()[]{} If type* is set to METHOD, SOURCE_IP, HEADER, or QUERY_STRING, this parameter will not take effect, and conditions will be used to specify the key and value.
provisioning_status	String	Specifies the provisioning status of the forwarding rule. The value can only be ACTIVE (default), PENDING_CREATE, or ERROR.
invert	Boolean	Specifies whether reverse matching is supported. The value is fixed at false. This parameter can be updated but will not take effect.
id	String	Specifies the forwarding policy ID.
conditions	Array of RuleCondition objects	Specifies the conditions contained in a forwarding rule. Notes and constraints: This parameter will take effect when enhance_l7policy_enable is set to true. If conditions is specified, key and value will not take effect. The keys in the list must be the same, whereas each value must be unique.
created_at	String	Specifies the time when the forwarding policy was added. The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time). This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.
updated_at	String	Specifies the time when the forwarding policy was updated. The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time). This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.

**Table 7** RuleCondition
Parameter	Type	Description
key	String	Specifies the key of match item. Notes and constraints: All keys in the conditions list in the same rule must be the same. If type is set to HOST_NAME, PATH, METHOD, or SOURCE_IP, this parameter is an empty string. If type is set to HEADER, key indicates the name of the HTTP header parameter, and value indicates the value of the request header parameter. The value can contain 1 to 40 characters, including letters, digits, hyphens (-), and underscores (_). If type is set to QUERY_STRING, key indicates the name of the query parameter, and value indicates the value of the query parameter. The key is case sensitive and can contain 1 to 128 characters. Spaces, square brackets ([ ]), curly brackets ({ }), angle brackets (< >), backslashes (), double quotation marks (" "), pound signs (#), ampersands (&), vertical bars (\|), percent signs (%), and tildes (~) are not supported.
value	String	Specifies the value of the match item. Notes and constraints: The value of each condition in a forwarding policy must be unique. Value ranges: If type is set to HOST_NAME, key is left blank, value indicates the domain name, which can contain 1 to 128 characters, including letters, digits, hyphens (-), periods (.), and asterisks (), and must start with a letter, digit, or asterisk (). If you want to use a wildcard domain name, enter an asterisk () as the leftmost label of the domain name. If type* is set to PATH, key is left blank, value indicates the request path, which can contain 1 to 128 characters. If compare_type is set to STARTS_WITH or EQUAL_TO for the forwarding rule, the value must start with a slash (/) and can contain only letters, digits, and special characters _~';@^-%#&$.+?,=!:\|/()[]{} If type* is set to HEADER, key indicates the name of the HTTP header parameter and value indicates the value of the HTTP header parameter. The value can contain 1 to 128 characters. Asterisks () and question marks (?) are allowed, but spaces and double quotation marks are not allowed. An asterisk can match zero or more characters, and a question mark can match 1 character. If type* is set to QUERY_STRING, key indicates the name of the query parameter and value indicates the value of the query parameter. The value is case sensitive and can contain 1 to 128 characters. Spaces, square brackets ([ ]), curly brackets ({ }), angle brackets (< >), backslashes (), double quotation marks (" "), pound signs (#), ampersands (&), vertical bars (\|), percent signs (%), and tildes (~) are not supported. Asterisks () and question marks (?) are allowed. An asterisk can match zero or more characters, and a question mark can match 1 character. If type* is set to METHOD, key is left blank, value indicates the HTTP method. The value can be GET, PUT, POST, DELETE, PATCH, HEAD, or OPTIONS. If type is set to SOURCE_IP, key is left blank, value indicates the source IP address of the request. The value is an IPv4 or IPv6 CIDR block, for example, 192.168.0.2/32 or 2049::49/64.

Example Requests

Querying forwarding rules

GET https://{ELB_Endpoint}/v3/{99a3fff0d03c428eac3678da6a7d0f24}/elb/l7policies/cf4360fd-8631-41ff-a6f5-b72c35da74be/rules

Example Responses

Status code: 200

Successful request.

{
  "rules" : [ {
    "compare_type" : "STARTS_WITH",
    "provisioning_status" : "ACTIVE",
    "project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
    "invert" : false,
    "admin_state_up" : true,
    "value" : "/ccc.html",
    "key" : null,
    "type" : "PATH",
    "id" : "84f4fcae-9c15-4e19-a99f-72c0b08fd3d7"
  } ],
  "page_info" : {
    "previous_marker" : "84f4fcae-9c15-4e19-a99f-72c0b08fd3d7",
    "current_count" : 1
  },
  "request_id" : "ae4dbd7d-9271-4040-98b6-3bfe45bb15ee"
}

SDK Sample Code

The SDK sample code is as follows.

      
       
         
         
           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.elb.v3.region.ElbRegion;
import com.huaweicloud.sdk.elb.v3.*;
import com.huaweicloud.sdk.elb.v3.model.*;


public class ListL7RulesSolution {

    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);

        ElbClient client = ElbClient.newBuilder()
                .withCredential(auth)
                .withRegion(ElbRegion.valueOf("<YOUR REGION>"))
                .build();
        ListL7RulesRequest request = new ListL7RulesRequest();
        request.withL7policyId("{l7policy_id}");
        try {
            ListL7RulesResponse response = client.listL7Rules(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());
        }
    }
}

          

        

      
     

      
       
         
         
           # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkelb.v3.region.elb_region import ElbRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkelb.v3 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 = ElbClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(ElbRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListL7RulesRequest()
        request.l7policy_id = "{l7policy_id}"
        response = client.list_l7_rules(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

          

        

      
     

      
       
         
         
           package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    elb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3/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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := elb.NewElbClient(
        elb.ElbClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListL7RulesRequest{}
	request.L7policyId = "{l7policy_id}"
	response, err := client.ListL7Rules(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

          

        

      
     