Azure Functions integration

[joeynq]

Is there any example to use TsED with Azure Functions and Koa/Express adapter?

[Romakita]

If you have an example with express and azure function, I’ll able to give a tsed example ;)

[joeynq]

I used azure-function-express module to handle express request in function, as example below:

const createHandler = require("azure-function-express").createHandler;
const express = require("express");

// Create express app as usual
const app = express();
app.get("/api/:foo/:bar", (req, res) => {
  res.json({
    foo  : req.params.foo,
    bar  : req.params.bar
  });
});

// Binds the express app to an Azure Function handler
module.exports = createHandler(app);

Beside, I wonder if we have any method like: const res = await platform.handleRequest(req) so I can do anything with the response as I want?

Thanks in advanced,

[Romakita]

Here the example based on this repository (tsed vercel): https://github.com/tsedio/tsed-example-vercel/blob/main/src/main.ts

import {PlatformExpress} from "@tsed/platform-express";
import {createHandler} from "azure-function-express";
import {PlatformBuilder} from "@tsed/common";
import {Server} from "./Server";

const platform = PlatformBuilder.create(Server, {
  adapter: PlatformExpress,
  httpsPort: false,
  httpPort: false,
  // disable componentsScan to avoid performance issue about glob pattern usage.
  disableComponentsScan: true
});

const promise = platform.bootstrap();
const handler = createHandler(async (req: any, res: any) => {
  try {
    await promise;
    platform.callback(req, res);
  } catch (er) {
    console.error("Exception", er);
  }
})

export default handler;

See you
Romain

[joeynq]

It's worked!

Thanks a lot for your great work!

[joeynq]

azure-function-express is kind of outdated. I made my Ts.ED application work with Azure Functions v4 and share the bootstrap script for anyone who need

// ./src/functions/api.ts
import {
  app,
  HttpRequest,
  HttpResponseInit,
  InvocationContext,
} from "@azure/functions";
import { PlatformBuilder } from "@tsed/common";
import { PlatformKoa } from "@tsed/platform-koa";
import serverless from "@vendia/serverless-express";
import { Server } from "../applications/Server";

const platform = PlatformBuilder.create(Server, {
  adapter: PlatformKoa,
  disableComponentsScan: true,
});

const promise = platform.bootstrap();

export async function api(
  request: HttpRequest,
  context: InvocationContext
): Promise<HttpResponseInit> {
  await promise;

  const server = serverless({
    app: platform.callback(),
    eventSourceName: "AZURE_HTTP_FUNCTION_V4", // or AZURE_HTTP_FUNCTION_V3
  });
  return server({ req: request }, context);
}

app.http("api", {
  methods: ["GET", "POST", "PUT", "DELETE", "PATCH"],
  authLevel: "anonymous",
  route: "{*route}", // required for routing
  handler: api,
});