Introduction

Pivotal Cloud Foundry (PCF) is a cloud-native platform that provides a streamlined way to deploy, manage, and scale applications. In this guide, you'll learn how to use the Go programming language to build and deploy applications on PCF. We'll cover setting up your development environment, creating a Go application, deploying it on PCF, and provide sample code and detailed steps.


Prerequisites

Before getting started, make sure you have GoLang installed, access to a PCF environment, and the Cloud Foundry Command Line Interface (cf CLI) installed on your system. Familiarity with GoLang and basic web application development will be helpful.


Setting Up Your Development Environment

To begin building and deploying Go applications on PCF, follow these steps to set up your development environment:

  1. Install Go: If you haven't already, download and install Go from the official website.
  2. Access PCF: Make sure you have access to a PCF environment or create an account if needed.
  3. Install cf CLI: Install the Cloud Foundry Command Line Interface (cf CLI) on your local machine to interact with PCF.

Creating a Go Application

Develop your Go application as per your requirements. Ensure it's a web server that listens to the correct port and responds to HTTP requests. Here's a simple example of a Go web server:

                            package main
                import (
                    "fmt"
                    "net/http"
                )
                func main() {
                    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
                        fmt.Fprint(w, "Hello, PCF!")
                    })
                    http.ListenAndServe(":8080", nil)
                }

Deploying on Pivotal Cloud Foundry

Deploying your Go application on PCF is a straightforward process. Here are the general steps:

  1. Login to PCF: Use the cf CLI to log in to your PCF account or target your PCF environment.
  2. Push Your Application: Use 'cf push' to push your Go application to PCF. You can specify configuration details in your manifest file.
  3. Access Your Application: Once deployed, you can access your Go application via the provided route or URL.

Sample Code

Here's a sample Go web server code and a simple manifest file for PCF deployment. You can adapt this code to your application's requirements.

                            package main
                import (
                    "fmt"
                    "net/http"
                )
                func main() {
                    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
                        fmt.Fprint(w, "Hello, PCF!")
                    })
                    http.ListenAndServe(":8080", nil)
                }

Manifest File (manifest.yml):

                            applications:
                - name: my-go-app
                  memory: 256M
                  buildpack: go_buildpack

Conclusion

Leveraging the Go programming language for building and deploying applications on Pivotal Cloud Foundry offers a streamlined way to manage cloud-native applications. This guide covered setting up your development environment, creating a Go application, and deploying it on PCF. With this knowledge, you can effectively develop and deploy Go applications on the PCF platform.


Further Resources

To further explore GoLang development on Pivotal Cloud Foundry, consider the following resources: