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Neo4j Example

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This project demonstrates how to connect to a Neo4j database in a Go application using the Fiber framework.

Prerequisites​

Ensure you have the following installed:

Setup​

  1. Clone the repository:

    git clone https://github.com/gofiber/recipes.git
    cd recipes/neo4j

  2. Install dependencies:

    go get

  3. Set up your Neo4j database and export connection settings:

    export NEO4J_URI=neo4j://localhost:7687
    export NEO4J_USER=neo4j
    export NEO4J_PASSWORD=password

Running the Application​

  1. Start the application: 
    go run main.go

Example​

Here is an example of how to connect to a Neo4j database in a Fiber application:

package main

import (
	"context"
	"log"
	"os"

	"github.com/gofiber/fiber/v3"
	"github.com/neo4j/neo4j-go-driver/v5/neo4j"
)

func main() {
	uri := os.Getenv("NEO4J_URI")
	user := os.Getenv("NEO4J_USER")
	pass := os.Getenv("NEO4J_PASSWORD")

	driver, err := neo4j.NewDriverWithContext(uri, neo4j.BasicAuth(user, pass, ""))
	if err != nil {
		log.Fatal(err)
	}
	defer driver.Close(context.Background())

	app := fiber.New()

	app.Get("/", func(c fiber.Ctx) error {
		ctx := context.Background()
		session := driver.NewSession(ctx, neo4j.SessionConfig{
			DatabaseName: "movies",
			AccessMode:   neo4j.AccessModeRead,
		})
		defer session.Close(ctx)

		result, err := session.Run(ctx, "RETURN 'Hello, World!' AS message", nil)
		if err != nil {
			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": err.Error()})
		}

		if result.Next(ctx) {
			return c.Status(fiber.StatusOK).JSON(fiber.Map{"message": result.Record().AsMap()["message"]})
		}
		if result.Err() != nil {
			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": result.Err().Error()})
		}

		return c.SendStatus(fiber.StatusNotFound)
	})

	log.Fatal(app.Listen(":3000"))
}

References​