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Edge Security Acceleration:BatchGetExpressionFields

Last Updated:Jul 08, 2026

Retrieves matching items for expressions in batches.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

esa:BatchGetExpressionFields

get

*Site

acs:esa:{#regionId}:{#accountId}:site/{#SiteId}

None None

Request parameters

Parameter

Type

Required

Description

Example

SiteId

integer

No

The site ID.

1

InstanceId

string

No

The plan instance ID.

esa-site-bitkull7uubk

PlanNameEn

string

No

The plan name (in English).

entranceplan

Kind

string

No

The type of the expression.

wireshark

Phase

string

No

The WAF phase.

http_bot

Expressions

array<object>

No

The list of expressions.

http_bot

object

No

The details of the expression.

Id

integer

No

The sequence number of the expression.

1

Expression

string

No

The content of the expression.

ip.src eq 1.1.1.1

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The request ID.

36af3fcc-43d0-441c-86b1-428951dc8225

Fields

array<object>

The list of matching fields.

object

The details of the matching field.

Id

string

The ID of the expression, which corresponds to the ID in the request parameters.

1

Fields

array

The list of matching fields for a single expression.

string

The matching field value for a single expression.

ip.src

Examples

Success response

JSON format

{
  "RequestId": "36af3fcc-43d0-441c-86b1-428951dc8225",
  "Fields": [
    {
      "Id": "1",
      "Fields": [
        "ip.src"
      ]
    }
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameter The specified parameter is invalid. The specified parameter is invalid.
400 InternalException Failed to call the service. Try again later or contact technical support. Failed to call the service. Try again later or contact technical support.
403 Expression.Invalid Expression syntax error or data type mismatched. Expression syntax error or data type mismatched.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.