Adding a Forwarding Rule

Function

This API is used to add a forwarding rule. After you add a forwarding rule, the load balancer matches the domain name and path in the request and distributes the traffic to the backend server group specified by redirect_pool_id of the associated forwarding policy.

Constraints

The match type of forwarding rules in a forwarding policy must be unique.

URI

POST /v2/{project_id}/elb/l7policies/{l7policy_id}/rules

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

Request

**Table 2** Parameter description
Parameter	Mandatory	Type	Description
rule	Yes	Rule object	Specifies the forwarding rule. For details, see Table 3.

**Table 3** **rule** parameter description
Parameter	Mandatory	Type	Description
tenant_id	No	String	Specifies the ID of the project where the forwarding rule is used. The value must be the same as the value of project_id in the token. The value contains a maximum of 255 characters.
admin_state_up	No	Boolean	Specifies the administrative status of the forwarding rule. This parameter is reserved, and the default value is true.
type	Yes	String	Specifies the match type of a forwarding rule. The value range varies depending on the protocol of the backend server group: HOST_NAME: matches the domain name in the request. PATH: matches the path in the request. The match type of forwarding rules in a forwarding policy must be unique.
compare_type	Yes	String	Specifies the match mode. The options are as follows: When type is set to HOST_NAME, the value of this parameter can only be the following: EQUAL_TO: indicates exact match. When type is set to PATH, the value of this parameter can be one of the following: REGEX: indicates regular expression match. STARTS_WITH: indicates prefix match. EQUAL_TO: indicates exact match.
invert	No	Boolean	Specifies whether reverse matching is supported. The value can be true or false. The default value is false. This parameter is reserved.
key	No	String	Specifies the key of the match content. The default value is null. This parameter is reserved. The value contains a maximum of 255 characters.
value	Yes	String	Specifies the value of the match content. The value cannot contain spaces. The value contains a maximum of 128 characters. When type is set to HOST_NAME, the value can contain a maximum of 100 characters that contain only letters, digits, hyphens (-), and periods (.), and must start with a letter or digit. When type is set to PATH, the value can contain a maximum of 128 characters. When compare_type is set to STARTS_WITH or EQUAL_TO, the value must start with a slash (/) and can contain only letters, digits, and special characters _~';@^-%#&$.*+?,=!:\| \/()[]{}

Response

**Table 4** Parameter description
Parameter	Type	Description
rule	Rule object	Specifies the forwarding rule. For details, see Table 5.

**Table 5** **rule** parameter description
Parameter	Type	Description
id	String	Specifies the forwarding rule ID.
tenant_id	String	Specifies the ID of the project where the forwarding rule is used. The value contains a maximum of 255 characters.
project_id	String	Specifies the ID of the project to which the forwarding rule belongs. This parameter has the same meaning as tenant_id.
admin_state_up	Boolean	Specifies the administrative status of the forwarding rule. This parameter is reserved. The value can be true or false. true: Enabled false: Disabled
type	String	Specifies the match type of a forwarding rule. The value range varies depending on the protocol of the backend server group: HOST_NAME: matches the domain name in the request. PATH: matches the path in the request.
compare_type	String	Specifies the match mode. The options are as follows: When type is set to HOST_NAME, the value of this parameter can only be the following: EQUAL_TO: indicates exact match. When type is set to PATH, the value of this parameter can be one of the following: REGEX: indicates regular expression match. STARTS_WITH: indicates prefix match. EQUAL_TO: indicates exact match.
invert	Boolean	Specifies whether reverse matching is supported. The value can be true or false. The default value is false. This parameter is reserved.
key	String	Specifies the key of the match content. The default value is null. This parameter is reserved. The value contains a maximum of 255 characters.
value	String	Specifies the value of the match content. The value contains a maximum of 128 characters. When type is set to HOST_NAME, the value can contain a maximum of 100 characters that contain only letters, digits, hyphens (-), and periods (.), and must start with a letter or digit. When type is set to PATH, the value can contain a maximum of 128 characters. When compare_type is set to STARTS_WITH or EQUAL_TO, the value must start with a slash (/) and can contain only letters, digits, and special characters _~';@^-%#&$.*+?,=!:\| \/()[]{}
provisioning_status	String	This parameter is reserved, and its value can only be ACTIVE. It specifies the provisioning status of the forwarding rule.

Example Request

Example request: Adding a forwarding rule

POST https://{endpoint}/v2/a31d2bdcf7604c0faaddb058e1e08819/elb/l7policies/5ae0e1e7-5f0f-47a1-b39f-5d4c428a1586/rules  

{
    "rule": {
        "compare_type": "EQUAL_TO", 
        "type": "PATH", 
        "value": "/bbb.html"
    }
}

Example Response

Example response

{
    "rule": {
        "compare_type": "EQUAL_TO", 
        "admin_state_up": true, 
        "provisioning_status": "ACTIVE",
        "tenant_id": "a31d2bdcf7604c0faaddb058e1e08819", 
        "project_id": "a31d2bdcf7604c0faaddb058e1e08819", 
        "invert": false, 
        "value": "/bbb.html", 
        "key": null, 
        "type": "PATH", 
        "id": "c6f457b8-bf6f-45d7-be5c-a3226945b7b1"
    }
}