apisix/docs/en/latest/plugins/request-validation.md

title
request-validation

Summary

• Name
• Attributes
• How To Enable
• Test Plugin
• Disable Plugin
• Examples

Name

request-validation plugin validates the requests before forwarding to an upstream service. The validation plugin uses json-schema to validate the schema. The plugin can be used to validate the headers and body data.

For more information on schema, refer to JSON schema for more information.

Attributes

Name	Type	Requirement	Default	Valid	Description
header_schema	object	optional			schema for the header data
body_schema	object	optional			schema for the body data

How To Enable

Create a route and enable the request-validation plugin on the route:

curl http://127.0.0.1:9080/apisix/admin/routes/5 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/get",
    "plugins": {
        "request-validation": {
            "body_schema": {
                "type": "object",
                "required": ["required_payload"],
                "properties": {
                    "required_payload": {"type": "string"},
                    "boolean_payload": {"type": "boolean"}
                }
            }
        }
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:8080": 1
        }
    }
}'

Test Plugin

curl --header "Content-Type: application/json" \
  --request POST \
  --data '{"boolean-payload":true,"required_payload":"hello"}' \
  http://127.0.0.1:9080/get

If the schema is violated the plugin will yield a 400 bad request.

Disable Plugin

Remove the corresponding json configuration in the plugin configuration to disable the request-validation. APISIX plugins are hot-reloaded, therefore no need to restart APISIX.

curl http://127.0.0.1:9080/apisix/admin/routes/5 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/get",
    "plugins": {
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:8080": 1
        }
    }
}'

Examples:

Enum validate:

{
    "body_schema": {
        "type": "object",
        "required": ["required_payload"],
        "properties": {
                "enum_payload": {
                "type": "string",
                "enum": ["enum_string_1", "enum_string_2"],
                "default": "enum_string_1"
            }
        }
    }
}

Boolean validate:

{
    "body_schema": {
        "type": "object",
        "required": ["bool_payload"],
        "properties": {
            "bool_payload": {
                "type": "boolean",
                "default": true
            }
        }
    }
}

Number or Integer validate:

{
    "body_schema": {
        "type": "object",
        "required": ["integer_payload"],
        "properties": {
            "integer_payload": {
                "type": "integer",
                "minimum": 1,
                "maximum": 65535
            }
        }
    }
}

String validate:

{
    "body_schema": {
        "type": "object",
        "required": ["string_payload"],
        "properties": {
            "string_payload": {
                "type": "string",
                "minLength": 1,
                "maxLength": 32
            }
        }
    }
}

Regex validate:

{
    "body_schema": {
        "type": "object",
        "required": ["regex_payload"],
        "properties": {
            "regex_payload": {
                "type": "string",
                "minLength": 1,
                "maxLength": 32,
                "pattern": "[[^[a-zA-Z0-9_]+$]]"
            }
        }
    }
}

Array validate:

{
    "body_schema": {
        "type": "object",
        "required": ["array_payload"],
        "properties": {
            "array_payload": {
                "type": "array",
                "minItems": 1,
                "items": {
                    "type": "integer",
                    "minimum": 200,
                    "maximum": 599
                },
                "uniqueItems": true,
                "default": [200, 302]
            }
        }
    }
}

Multi-field combination verification:

{
    "body_schema": {
        "type": "object",
        "required": ["boolean_payload", "array_payload", "regex_payload"],
        "properties": {
            "boolean_payload": {
                "type": "boolean"
            },
            "array_payload": {
                "type": "array",
                "minItems": 1,
                "items": {
                    "type": "integer",
                    "minimum": 200,
                    "maximum": 599
                },
                "uniqueItems": true,
                "default": [200, 302]
            },
            "regex_payload": {
                "type": "string",
                "minLength": 1,
                "maxLength": 32,
                "pattern": "[[^[a-zA-Z0-9_]+$]]"
            }
        }
    }
}