11-http-server.md

Create an HTTP server to server "wasm micro services"

various ways to do that

HTTP server skeleton

This is the source code of an HTTP Server using the fiber framework

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"

	extism "github.com/extism/go-sdk"
	"github.com/gofiber/fiber/v2"
	"github.com/tetratelabs/wazero"
)

func main() {
	ctx := context.Background()

	app := fiber.New(fiber.Config{DisableStartupMessage: true})

	app.Post("/", func(c *fiber.Ctx) error {

		params := c.Body()

		c.Status(http.StatusOK)

		return c.SendString("hello")

	})

	fmt.Println("🌍 http server is listening on:", httpPort)
	app.Listen(":" + httpPort)
}

With what you learn with the exercise number 10, you can now create a simple HTTP server that will serve the wasm plugins done in the previous exercise (07, 08, 09).

The hello function of the plug-ins will be called at every HTTP request.

• To build the server, see: ./build.sh
• To run the server, see: ./start.go.sh, ./start.js.sh, ./start.rust.sh
• Test the curl request for each plugin, see: ./query.sh