Outline
@nestia/core
export function TypedException<T extends object>(
status: number | "2XX" | "3XX" | "4XX" | "5XX",
description?: string,
): MethodDecorator;
export function TypedException<T extends object>(props: {
status: : number | "2XX" | "3XX" | "4XX" | "5XX";
description?: string;
example?: T;
examples?: Record<string, T>;
}): MethodDecorator;Exception decorator of HTTP responses.
TypedException is a decorator function describing HTTP exception and its type which could be occured in a controller method. For reference, this decorator function does not affect to the method’s behavior, but affects to the swagger documents generation, or SDK functions when propagation mode being used.
How to use
ExceptionController.ts
import { Controller } from "@nestjs/common";
import typia, { TypeGuardError } from "typia";
import {
TypedBody,
TypedException,
TypedParam,
TypedRoute,
} from "@nestia/core";
import { IBbsArticle } from "@api/lib/structures/IBbsArticle";
import { IInternalServerError } from "@api/lib/structures/IInternalServerError";
import { INotFound } from "@api/lib/structures/INotFound";
import { IUnprocessibleEntity } from "@api/lib/structures/IUnprocessibleEntity";
@Controller("exception")
export class ExceptionController {
@TypedRoute.Post(":section/typed")
@TypedException<TypeGuardError>({
status: 400,
description: "invalid request",
example: {
name: "BadRequestException",
method: "TypedBody",
path: "$input.title",
expected: "string",
value: 123,
message: "invalid type",
},
})
@TypedException<INotFound>(404, "unable to find the matched section")
@TypedException<IUnprocessibleEntity>(428)
@TypedException<IInternalServerError>("5XX", "internal server error")
public async typed(
@TypedParam("section") section: string,
@TypedBody() input: IBbsArticle.IStore,
): Promise<IBbsArticle> {
section;
input;
return typia.random<IBbsArticle>();
}
}Just call TypedException() function with target type and status code.
If you want to add description or example value, you also can add it as a property.
For reference, swagger allows to special pattern like 2XX, 3XX, 4XX, 5XX for status code.
Swagger Example
Here is an example of swagger documents utilizing the @TypedException() decorator.
swagger.json
{
"openapi": "3.1.0",
"servers": [
{
"url": "https://github.com/samchon/nestia",
"description": "insert your server url"
}
],
"info": {
"version": "3.11.1",
"title": "@samchon/nestia-test",
"description": "Test program of Nestia",
"license": {
"name": "MIT"
}
},
"paths": {
"/exception/{section}/typed": {
"post": {
"tags": [],
"parameters": [
{
"name": "section",
"in": "path",
"schema": {
"type": "string"
},
"required": true
}
],
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/IBbsArticle.IStore"
}
}
},
"required": true
},
"responses": {
"201": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/IBbsArticle"
}
}
}
},
"400": {
"description": "invalid request",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/TypeGuardErrorany"
},
"example": {
"name": "BadRequestException",
"method": "TypedBody",
"path": "$input.title",
"expected": "string",
"value": 123,
"message": "invalid type"
}
}
}
},
"404": {
"description": "unable to find the matched section",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/INotFound"
}
}
}
},
"428": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/IUnprocessibleEntity"
}
}
}
},
"5XX": {
"description": "internal server error",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/IInternalServerError"
}
}
}
}
}
}
}
},
"components": {
"schemas": {
"IBbsArticle": {
"type": "object",
"properties": {
"id": {
"type": "string",
"format": "uuid"
},
"created_at": {
"type": "string",
"format": "date-time"
},
"title": {
"type": "string",
"minLength": 3,
"maxLength": 50
},
"body": {
"type": "string"
},
"files": {
"type": "array",
"items": {
"$ref": "#/components/schemas/IAttachmentFile"
}
}
},
"required": [
"id",
"created_at",
"title",
"body",
"files"
]
},
"IAttachmentFile": {
"type": "object",
"properties": {
"name": {
"oneOf": [
{
"type": "null"
},
{
"type": "string",
"maxLength": 255
}
]
},
"extension": {
"oneOf": [
{
"type": "null"
},
{
"type": "string",
"minLength": 1,
"maxLength": 8
}
]
},
"url": {
"type": "string",
"format": "uri"
}
},
"required": [
"name",
"extension",
"url"
]
},
"IBbsArticle.IStore": {
"type": "object",
"properties": {
"title": {
"type": "string",
"minLength": 3,
"maxLength": 50
},
"body": {
"type": "string"
},
"files": {
"type": "array",
"items": {
"$ref": "#/components/schemas/IAttachmentFile"
}
}
},
"required": [
"title",
"body",
"files"
]
},
"TypeGuardErrorany": {
"type": "object",
"properties": {
"method": {
"type": "string"
},
"path": {
"type": "string"
},
"expected": {
"type": "string"
},
"value": {},
"fake_expected_typed_value_": {},
"name": {
"type": "string"
},
"message": {
"type": "string"
},
"stack": {
"type": "string"
}
},
"required": [
"method",
"expected",
"value",
"name",
"message"
]
},
"INotFound": {
"type": "object",
"properties": {
"schema": {
"type": "string"
},
"table": {
"type": "string"
},
"id": {
"type": "string"
}
},
"required": [
"schema",
"table",
"id"
]
},
"IUnprocessibleEntity": {
"type": "object",
"properties": {
"reason": {
"type": "string"
}
},
"required": [
"reason"
]
},
"IInternalServerError": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"message": {
"type": "string"
},
"stack": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"name",
"message",
"stack"
]
}
},
"securitySchemes": {
"bearer": {
"type": "apiKey"
}
}
},
"tags": [],
"x-samchon-emended": true
}