Extremely Popular
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149/* * This is an example of a server that utilizes the router. */
// Importing some console colorsimport { bold, cyan, green, yellow,} from "https://deno.land/std@0.152.0/fmt/colors.ts";
import { Application, Context, isHttpError, Router, RouterContext, Status,} from "../mod.ts";
interface Book { id: string; title: string; author: string;}
const books = new Map<string, Book>();
books.set("1234", { id: "1234", title: "The Hound of the Baskervilles", author: "Conan Doyle, Author",});
function notFound(context: Context) { context.response.status = Status.NotFound; context.response.body = `<html><body><h1>404 - Not Found</h1><p>Path <code>${context.request.url}</code> not found.`;}
const router = new Router();router .get("/", (context) => { context.response.body = "Hello world!"; }) .get("/book", (context) => { context.response.body = Array.from(books.values()); }) .post("/book", async (context: RouterContext<"/book">) => { console.log("post book"); if (!context.request.hasBody) { context.throw(Status.BadRequest, "Bad Request"); } const body = context.request.body(); let book: Partial<Book> | undefined; if (body.type === "json") { book = await body.value; } else if (body.type === "form") { book = {}; for (const [key, value] of await body.value) { book[key as keyof Book] = value; } } else if (body.type === "form-data") { const formData = await body.value.read(); book = formData.fields; } if (book) { context.assert(book.id && typeof book.id === "string", Status.BadRequest); books.set(book.id, book as Book); context.response.status = Status.OK; context.response.body = book; context.response.type = "json"; return; } context.throw(Status.BadRequest, "Bad Request"); }) .get("/book/:id", (context) => { if (context.params && books.has(context.params.id)) { context.response.body = books.get(context.params.id); } else { return notFound(context); } });
const app = new Application();
// Loggerapp.use(async (context, next) => { await next(); const rt = context.response.headers.get("X-Response-Time"); console.log( `${green(context.request.method)} ${ cyan(decodeURIComponent(context.request.url.pathname)) } - ${ bold( String(rt), ) }`, );});
// Response Timeapp.use(async (context, next) => { const start = Date.now(); await next(); const ms = Date.now() - start; context.response.headers.set("X-Response-Time", `${ms}ms`);});
// Error handlerapp.use(async (context, next) => { try { await next(); } catch (err) { if (isHttpError(err)) { context.response.status = err.status; const { message, status, stack } = err; if (context.request.accepts("json")) { context.response.body = { message, status, stack }; context.response.type = "json"; } else { context.response.body = `${status} ${message}\n\n${stack ?? ""}`; context.response.type = "text/plain"; } } else { console.log(err); throw err; } }});
// Use the routerapp.use(router.routes());app.use(router.allowedMethods());
// A basic 404 pageapp.use(notFound);
app.addEventListener("listen", ({ hostname, port, serverType }) => { console.log( bold("Start listening on ") + yellow(`${hostname}:${port}`), ); console.log(bold(" using HTTP server: " + yellow(serverType)));});
await app.listen({ hostname: "127.0.0.1", port: 8000 });console.log(bold("Finished."));