This plugin terminates incoming requests with a specified status code and message. This allows to (temporarily) stop traffic on a Service or a Route (or the deprecated API entity), or even block a Consumer.


Terminology

  • plugin: a plugin executing actions inside Kong before or after a request has been proxied to the upstream API.
  • API: (deprecated) the Kong entity representing your upstream service placed behind Kong, for which Kong proxies requests to.
  • Service: the Kong entity representing an external upstream API or microservice.
  • Route: the Kong entity representing a way to map downstream requests to upstream services.
  • Consumer: the Kong entity representing a developer or machine using the API. When using Kong, a Consumer only communicates with Kong which proxies every call to the said upstream API.
  • Credential: a unique string associated with a Consumer, also referred to as an API key.
  • upstream service: this refers to your own API/service sitting behind Kong, to which client requests are forwarded.

Configuration

Enabling the plugin for a Service

Configure on top of a Service by executing the following request on your Kong server:

$ curl -X POST http://kong:8001/services/{service}/plugins \
    --data "name=request-termination"  \
    --data "config.status_code=403" \
    --data "config.message=So long and thanks for all the fish!"
  • service: the id or name of the Service that this plugin configuration will target.

Enabling the plugin for a Route

Configure on top of a Route with:

$ curl -X POST http://kong:8001/routes/{route_id}/plugins \
    --data "name=request-termination"  \
    --data "config.status_code=403" \
    --data "config.message=So long and thanks for all the fish!"
  • route_id: the id of the Route that this plugin configuration will target.

Enabling the plugin for an API

If you are using the deprecated API entity, you can configure on top of an API by executing the following request on your Kong server:

$ curl -X POST http://kong:8001/apis/{api}/plugins \
    --data "name=request-termination"  \
    --data "config.status_code=403" \
    --data "config.message=So long and thanks for all the fish!"
  • api: either id or name of the API that this plugin configuration will target.

Enabling the plugin for a Consumer

You can use the http://localhost:8001/plugins endpoint to target Consumers:

$ curl -X POST http://kong:8001/plugins \
    --data "name=request-termination" \
    --data "consumer_id={consumer_id}"  \
    --data "config.status_code=403" \
    --data "config.message=So long and thanks for all the fish!"

Where consumer_id: The id of the Consumer we want to associate with this plugin.

You can combine adding consumer_id and service_id in the same request.

Once applied, any user with a valid credential can access the Service/API. To restrict usage to only some of the authenticated users, also add the ACL plugin (not covered here) and create whitelist or blacklist groups of users.

Global plugins

All plugins can be configured using the http:/kong:8001/plugins/ endpoint. A plugin which is not associated to any API, Service, Route or Consumer is considered "global", and will be run on every request. Read the Plugin Reference and the Plugin Precedence sections for more information.

Parameters

Here's a list of all the parameters which can be used in this plugin's configuration:

form parameterdefaultdescription
nameThe name of the plugin to use, in this case request-termination
api_idThe id of the API which this plugin will target.
service_idThe id of the Service which this plugin will target.
route_idThe id of the Route which this plugin will target.
consumer_idThe id of the Consumer which this plugin will target.
config.status_code
optional

503

The response code to send.

config.message
optional

The message to send, if using the default response generator.

config.body
optional

The raw response body to send, this is mutually exclusive with the config.message field.

config.content_type
optional

application/json; charset=utf-8

Content type of the raw response configured with config.body.

Once applied, every request (within the configured plugin scope of a Service, Route, Consumer, API, or global) will be immediately terminated by sending the configured response.

Example Use Cases

  • Temporarily disable a Service (e.g. it is under maintenance).
  • Temporarily disable a Route (e.g. the rest of the Service is up and running, but a particular endpoint must be disabled).
  • Temporarily disable a Consumer (e.g. excessive consumption).
  • Block anonymous access with multiple auth plugins in a logical OR setup.

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