mocking.md

title	keywords	description
mocking	Apache APISIX API Gateway Plugin Mocking	This document contains information about the Apache APISIX mocking Plugin.

Description

The mocking Plugin is used for mocking an API. When executed, it returns random mock data in the format specified and the request is not forwarded to the Upstream.

Attributes

Name	Type	Required	Default	Description
delay	integer	False		Response delay in seconds.
response_status	integer	False	200	HTTP status code of the response.
content_type	string	False	application/json	Header Content-Type of the response.
response_example	string	False		Body of the response, support use variables, like $remote_addr $consumer_name.
response_schema	object	False		The JSON schema object for the response. Works when response_example is unspecified.
with_mock_header	boolean	False	true	When set to true, adds a response header x-mock-by: APISIX/{version}.
response_headers	object	false		Headers to be added in the mocked response. Example: {"X-Foo": "bar", "X-Few": "baz"}

The JSON schema supports the following types in their fields:

• string
• number
• integer
• boolean
• object
• array

Here is a JSON schema example:

{
    "properties":{
        "field0":{
            "example":"abcd",
            "type":"string"
        },
        "field1":{
            "example":123.12,
            "type":"number"
        },
        "field3":{
            "properties":{
                "field3_1":{
                    "type":"string"
                },
                "field3_2":{
                    "properties":{
                        "field3_2_1":{
                            "example":true,
                            "type":"boolean"
                        },
                        "field3_2_2":{
                            "items":{
                                "example":155.55,
                                "type":"integer"
                            },
                            "type":"array"
                        }
                    },
                    "type":"object"
                }
            },
            "type":"object"
        },
        "field2":{
            "items":{
                "type":"string"
            },
            "type":"array"
        }
    },
    "type":"object"
}

This is the response generated by the Plugin from this JSON schema:

{
    "field1": 123.12,
    "field3": {
        "field3_1": "LCFE0",
        "field3_2": {
            "field3_2_1": true,
            "field3_2_2": [
                155,
                155
            ]
        }
    },
    "field0": "abcd",
    "field2": [
        "sC"
    ]
}

Enable Plugin

The example below configures the mocking Plugin for a specific Route:

:::note You can fetch the admin_key from config.yaml and save to an environment variable with the following command:

admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g')

:::

curl http://127.0.0.1:9180/apisix/admin/routes/1 -H "X-API-KEY: $admin_key" -X PUT -d '
{
    "methods": ["GET"],
    "uri": "/index.html",
    "plugins": {
        "mocking": {
            "delay": 1,
            "content_type": "application/json",
            "response_status": 200,
            "response_schema": {
               "properties":{
                   "field0":{
                       "example":"abcd",
                       "type":"string"
                   },
                   "field1":{
                       "example":123.12,
                       "type":"number"
                   },
                   "field3":{
                       "properties":{
                           "field3_1":{
                               "type":"string"
                           },
                           "field3_2":{
                               "properties":{
                                   "field3_2_1":{
                                       "example":true,
                                       "type":"boolean"
                                   },
                                   "field3_2_2":{
                                       "items":{
                                           "example":155.55,
                                           "type":"integer"
                                       },
                                       "type":"array"
                                   }
                               },
                               "type":"object"
                           }
                       },
                       "type":"object"
                   },
                   "field2":{
                       "items":{
                           "type":"string"
                       },
                       "type":"array"
                   }
               },
               "type":"object"
           }
        }
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:1980": 1
        }
    }
}'

Example usage

Once you have configured the Plugin as mentioned above, you can test the Route.

The example used here uses this mocked response:

{
  "delay":0,
  "content_type":"",
  "with_mock_header":true,
  "response_status":201,
  "response_example":"{\"a\":1,\"b\":2}"
}

Now to test the Route:

curl http://127.0.0.1:9080/test-mock -i

HTTP/1.1 201 Created
...
Content-Type: application/json;charset=utf8
x-mock-by: APISIX/2.10.0
...

{"a":1,"b":2}

Delete Plugin

To remove the mocking Plugin, you can delete the corresponding JSON configuration from the Plugin configuration. APISIX will automatically reload and you do not have to restart for this to take effect.

curl http://127.0.0.1:9180/apisix/admin/routes/1 -H "X-API-KEY: $admin_key" -X PUT -d '
{
    "methods": ["GET"],
    "uri": "/index.html",
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:1980": 1
        }
    }
}'