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Version: 3.0

request-validation

描述#

request-validation 插件用于提前验证向上游服务转发的请求。该插件使用 JSON Schema 机制进行数据验证,可以验证请求的 bodyheader 数据。

属性#

名称类型必选项默认值有效值描述
header_schemaobjectheader 数据的 schema 数据结构。
body_schemaobjectbody 数据的 schema 数据结构。
rejected_codeinteger400[200,...,599]当请求被拒绝时要返回的状态码。
rejected_msgstring当请求被拒绝时返回的信息。
注意

启用该插件时,至少需要配置 header_schemabody_schema 属性中的任意一个,两者也可以同时使用。

启用插件#

以下示例展示了如何在指定路由上启用 request-validation 插件,并设置 body_schema 字段:

curl http://127.0.0.1:9180/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"}
}
}
"rejected_msg": "customize reject message"
}
},
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:8080": 1
}
}
}'

以下示例展示了不同验证场景下该插件的 JSON 配置:

枚举(Enum)验证#

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

布尔(Boolean)验证#

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

数字范围(Number or Integer)验证#

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

字符串长度(String)验证#

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

正则表达式(Regex)验证#

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

数组(Array)验证#

{
"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]
}
}
}
}

多字段组合(Combined)验证#

{
"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_]+$]]"
}
}
}
}

自定义拒绝信息#

{
"uri": "/get",
"plugins": {
"request-validation": {
"body_schema": {
"type": "object",
"required": ["required_payload"],
"properties": {
"required_payload": {"type": "string"},
"boolean_payload": {"type": "boolean"}
}
},
"rejected_msg": "customize reject message"
}
},
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:8080": 1
}
}
}

测试插件#

按上述配置启用插件后,使用 curl 命令请求该路由:

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

现在只允许符合已配置规则的有效请求到达上游服务。不符合配置的请求将被拒绝,并返回 400 或自定义状态码。

禁用插件#

当你需要禁用该插件时,可以通过以下命令删除相应的 JSON 配置,APISIX 将会自动重新加载相关配置,无需重启服务:

curl http://127.0.0.1:9180/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
}
}
}'