---
title: Go and Echo starter
slug: go-and-echo-starter
published_at: 2020-04-23 14:33:14 +0000
updated_at: 2023-01-30 22:51:16 +0000
summary: 
description: In this edition of Stripe Developer Office Hours, follow along as CJ Avilla walks through the fundamentals of Go and Echo.  ### Resources  - Echo web framework https://echo.labstack.com/ - curl command line tool https://curl.haxx.se/ - godotenv https://github.com/joho/godotenv - Stripe Webhooks Guide https://stripe.com/docs/webhooks/build - Stripe Event Types https://stripe.com/docs/api/events/types - Code: https://github.com/stripe-samples/developer-office-hours/tree/master/starter  ### Presenter  CJ Avilla, Developer Advocate at Stripe - https://twitter.com/cjav_dev  ### Table of contents  00:05 Introduction 01:45 How to jump to the end with `stripe samples create` 03:00 Setup client-side boiler plate 04:39 Setup server-side boiler plate 07:34 Make API call to Stripe from server 09:38 Install and configure echo 16:30 Test server endpoints with curl 17:04 Add GET route to server 19:05 Make GET request from client-side 20:48 Add POST route to server 25:07 Make POST request from client-side 31:20 Handle webhook notifications  ### Support  If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat.  ### Updates  Sign up to stay updated with developer news: https://go.stripe.global/dev-digest  ### Feedback  If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88. #Stripe #Payments
tags: [stripe, payments, golang, echo, go, @cjav_dev]
views: 4775
author: CJ Avilla
url: https://www.cjav.dev/videos/go-and-echo-starter
youtube_url: https://www.youtube.com/watch?v=ePmEVBu8w6Y
youtube_id: ePmEVBu8w6Y
embed_url: https://www.youtube.com/embed/ePmEVBu8w6Y
thumbnail_url: https://i.ytimg.com/vi/ePmEVBu8w6Y/hqdefault.jpg
type: video
---

# Go and Echo starter

*Published: April 23, 2020*
*Views: 4775*

## Watch

[Watch on YouTube](https://www.youtube.com/watch?v=ePmEVBu8w6Y)

[![Go and Echo starter](https://i.ytimg.com/vi/ePmEVBu8w6Y/hqdefault.jpg)](https://www.youtube.com/watch?v=ePmEVBu8w6Y)

## Description

In this edition of Stripe Developer Office Hours, follow along as CJ Avilla walks through the fundamentals of Go and Echo.

### Resources

- Echo web framework https://echo.labstack.com/
- curl command line tool https://curl.haxx.se/
- godotenv https://github.com/joho/godotenv
- Stripe Webhooks Guide https://stripe.com/docs/webhooks/build
- Stripe Event Types https://stripe.com/docs/api/events/types
- Code: https://github.com/stripe-samples/developer-office-hours/tree/master/starter

### Presenter

CJ Avilla, Developer Advocate at Stripe - https://twitter.com/cjav_dev

### Table of contents

00:05 Introduction
01:45 How to jump to the end with `stripe samples create`
03:00 Setup client-side boiler plate
04:39 Setup server-side boiler plate
07:34 Make API call to Stripe from server
09:38 Install and configure echo
16:30 Test server endpoints with curl
17:04 Add GET route to server
19:05 Make GET request from client-side
20:48 Add POST route to server
25:07 Make POST request from client-side
31:20 Handle webhook notifications

### Support

If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat.

### Updates

Sign up to stay updated with developer news: https://go.stripe.global/dev-digest

### Feedback

If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88.
#Stripe #Payments

## Transcript

[Music] in this episode we cover foundational topics and dig into the basics of NGO and the echo web framework and how it works and how we use it as a base for developer office hours episodes and also in the stripe samples which is this collection of github repositories demonstrating stripe integrations with many striped products so you may be just getting started and are curious about how to build an application from scratch to take your first online payment and this episode will cover some of the basics to help you get started quickly with go and echo if you already have a back-end set up and are comfortable adding new routes and are looking to add a new stripe integration you may want to check out other office hours episodes where we show how to integrate specific stripe products and features so why echo in echo maintainer x' onwards it's a high-performance extensible minimalist go web framework and so what this allows us to do is to keep the code for a demo concise while showing a real working example so it may be helpful to watch and refer to two other episodes before this one first is an episode about managing environment variables with go and so specifically we use the go dot end package and the second episode being the introduction to the stripe CLI as a quick agenda for today we'll cover first how to setup a client with a basic HTML file and striped J's install then we'll go into implementing a basic echo server and adding get and post routes and then finally we'll show how to add a post route to use as your web hook handler welcome back to stripe developer office hours I'm CJ Avila developer support engineer let's look at the code so if you want to jump directly to the end and kind of skip over all this boilerplate you could use stripe samples create developer office hours office hours and this is the stripe sample that represents the boilerplate that we use for all stripe office hours episodes going forward so you would go down and pick go and that will download and create a new directory called developer office hours and I'm using the stripe CLI in the samples command to install that so if you don't have the stripe CLI already or you're curious about that we have another episode you can go check that out stripe samples is one of the commands that allows you to easily install a a stripe sample and you can pick the server language so we we chose go today and we have two directories that it creates the client and the server with some files but today we're going to be most focused on this index that HTML which is just some very basic structure and then server go and how we add routes and how we have add the web book handler so this is what we're gonna be building today let's remove that and we'll just start from scratch okay I'm going to make a client and server directory and then I'm going to open up client index.html and the very first thing we want to do is just add some structure here so I'll add a title of developer office hours and some CSS and this is going to be common across all developer office hours episodes and then maybe just some structure for the body here and at the bottom of the body right before the closing body tag we want to include stripe J s and we do that with this script tag one thing to note you always want to load stripe GS from J s type com you don't want to download that file and then include it in your bundle or anything because this the code that's at J s type com is going to be always up-to-date and will have the latest security features and so it's very important that you always load this directly from JSTOR com okay the next thing we want to add is a script tag here sometimes we'll use script tags that refer to a script file that's in the project for most office hours episodes because we want to keep all of the code on screen will often write an inline script tag here right at the bottom and one thing to note is we want to add the script tag right after we have included stripe J s because we're going to use the objects that are available in that SDK so the very first thing we want to do is or something that we most commonly do is initialize a new instance of stripe and here we're passing in our publishable key now this is in this case we're heart we're sort of hard-coding it directly on the client not Sara Lee the best practice because if we wanted to roll our publishable key then we have to go find all instances where we added this string and replace those so the first thing I want to do for today's demo is show how we might fetch that publishable key from the server okay so let's go let's go spin up our server-side code and make sure that we have that set up okay so we're gonna I'm gonna go into the server directory we're gonna make a brand new server go at the very top we want to add packaged our package is main and then we're gonna add some import statements so initially let's just import format and get let's see let's let's also do our dot files go dot n is where we're installing Godot in for managing environment variables and then in our main function we'll simply for now we'll load our in our dot n and then a console dot log the publishable key that we want to return back to the client so here we say something like go to n dot load and we pass in the path to our environment variable ok so if there's an error return the error or we can just like print the error fail to load dot n okay and then if the environment variable environment variables were loaded fine but let's print out OS get n for stripe public key ok and this is going to be all uppercase and because I'm using the OS package we also need to include that all right so let's see if we can run this code and see the publishable key go run server that's how we run the code ok failed to load n that's because that end is not in this directory so I need to copy from I'm gonna copy this in directly here with my with my stripe keys now in practice you will often see either a dot n dot example in the root of the project that you can rename and move into the server directory or if you're using stripe samples create stripe samples create is going to use the the tokens from when you authenticated with stripe log in through the CLI and we'll set those for you automatically so it's pretty neat alright so now that we have a dot end added go run server and we get back the publishable key so that's great let's take this one step further let's install stripe the stripe stripe go library and then set the key for that and then try to log out the plans that we might get back from a API call ok so here what we want to do is we want to install stripe go so github.com slash stripe / stripe go and then we're also going to use plans just to just a kind of like print something out okay so we've got the publishable key we know what that looks like and we also need to set the api key to our secret key so I'm gonna sit here stripe key is equal to our secret key alright and then in order to list the the plans it looks like this we need to initialize a params object for plan list params and then we need to make a call to the list endpoint we can iterate over the plans that we get back just sort of printing them out to the command line so I'm gonna say params is a new stripe plan list params object and for now we're not going to set any filters and I'll just say the iterator is plan dot list and pass in params and then we can use this iterator to find each plan and print it out so we say something like 4i dot next and we want to grab the plan and that's going to be i dot plan and then we can print that out maybe we just print out PID just to get the the plan IDs so I have many different plans and this should print out the the IDs for all those plans okay let's see if if we're able to make this run now all right so go run server we expect to get back a list of plans awesome so we've got back a whole bunch of plans plan IDs that is great so that is working we've installed the stripe library we're able to make an API request to retrieve the plans we printed them out we're sort of like iterating through those plan objects okay the next step here is to install echo and the views and sort of like get the get the boilerplate set up for echo so let's install the package here so this is gonna be from lab stack slash echo and we're also gonna want middleware and we don't need plan anymore because I'm actually going to remove this stuff here and we might use this publishable key later as part of a route okay so now we've got our API key set we want to initialize a new instance of echo so we're gonna say echo dot new and then we need to let's see at the very at the very end after we have set our set middleware middle we're and set routes then at the very bottom we're gonna say something like e dot logger dot fatal e dot start and we're gonna pass in localhost for two for two so that it starts the server on local localhost for two four two four two four two okay so this should create a new instance of the echo server and then started up and so we want to set some middlewares here there's a few options for middleware we can set a common one is the logger so you can say EDA use middleware dot logger and then the the other one that's really common is recover middleware dot recover so logger is going to allow you to have log statements every time you receive a request and recovery is going to recover if there's any like panics while processing a request so these are two really common middlewares to add you can also pass like logger with config here and pass in configure you mints so that the way that the log statement is printed out you can show the method you can show the path you can show you know the query string things like that by configuring the logger for now we're just going to leave it just as the default logger and we might actually comment that out to make it a little bit more quiet and then we want to add next we want to add some routes so we can say like e dot static and that's gonna serve static assets from the route so the path to the static assets when you're browsing is going to be localhost for two for two slash but the actual content for the static assets is going to live in static dur so the it's actually going to be in slash client dot dot slash client but rather than hard-coding dot dot slash client we use an environment variable here in the stripe sample so that if your client if your client directory is named something other than client you can replace this so we're gonna say OS dot get and again static dur so we're gonna pass that in ok so now we have a static route we also want to add maybe a get route for the route which we can do like this we can say he'd get and pass in the route route and then we want to pass the handler the name of the function that we would need to run when receiving a get request to the slash so we'll say index handler and that'll be down here we'll implement this echo an echo handler so index handler and that takes the the echo context as the first argument and what we want to do here is return or we want to render status okay with the content of index.html so we want to say something like return C dot render and HTTP status okay and index.html that's the template that we're going to render and then finally we're gonna pass it a hash map of strings so that we can like inject some content into the page into the template so we'll pass that something like this map of string is an interface that looks like this where we have one key called test or maybe let's call it name and this is for Jenny rows in it'll just be like the name of the the user for now okay so one other thing that we need to do before we can use this render method is we need to tell echo how we want it to render so we need to define a renderer so we can do that here right after setting the middleware I want to set the renderer up to use echo view so let's let's do that so we can say e dot renderer is equal to echo view dot new and we want to pass in the config for this so echo view or no this is going to be a go view dot config and the arguments here is we define where the route is to the templates that we want to be able to render as views so we're gonna pass route and again this is going to be equal to that OS dot get in static der because we wanted to render templates from that client directory and then finally we wanted to say disable cache is true okay and so before we go too far I need to also include those packages for echo view and let's see so that is going to be github.com slash foulon slash echo view and I could view slash supports oh so this is go view go view supports echo view so go view is a package that has some templating logic and then they have support for a few different go web frameworks one of them being echo so that we're going to use the echo view version today of go view okay why are these not happy can't find any oh lab stack okay okay good alright so we've got our imports here we're importing many different things that are important and we've got our echo v you've got echo our dot files let's just give this a whirl and see if we can fire this up okay line 44 we've got an error 44 and yes it's expecting a comma at the end of that line and then if we run this again undefined HTTP so we need to install net HTTP so that we have access to this HTTP status okay all right let's try this again alright so it looks like we've fired up a server on localhost for two for two let's try sending a get request to slash to see what we get back so we can use curl which is a command line tool for making HTTP requests all right curl localhost for two for two implied slash we get back the HTML that we were expecting so that's looking good okay the next step is to add a new route to our go server that will return the publishable key when making a get request so let's add a new route we're gonna add a new get route so the first thing we want to do is add a new route directly here in our main function so we're gonna say get and then we need to pass a new string for the path that we want to receive the request set public key and then we need to name a new function as the handler for the public keys endpoint so public keys handler okay and then we'll call this echo H so public keys Handler and this will return a JSON blob with the public key that we want to pass back so in order to pass some data back we want to define the shape of that data so oftentimes will create a struct called like public key data or public key params and then we can add a public stripe maybe we say stripe key here is a string and that's going to be in the key property of the JSON that we return and then here we can say data is a is one of these things public key params and we pass in stripe key from the from the environment variables so we've we showed how to print this out in the very beginning and so now we're going to create a new instance of this public key params and then render JSON back with that data so let's go test that out so we restart our server make a get request missed this time to slash public keys let's see we saw an error in the server log this needs to be a capital K stripe key to match this ok we'll restart the server and now we're making a get request to slash public keys and we get back exactly that JSON that has the key with the publishable key so now the server route is added we have a get route where we can respond with JSON so let's head back over to the client and make a get request from the client to connect sort of the client to the server so we can make a get request from the client for this public key and set that on the client so we go back to index dot HTML here I'm going to use a fetch command two public keys and the result will be returned in this data blob so this data object is going to refer to the JSON object deserialized and it will contain the key for our publishable key which we want to set here so we want to say stripe is stripe data okay so how does this out of this fetch work so fetch by default if you just pass it a string argument to the path that you want to make a get request it will it will send a get request there's another form which we'll see later where we can pass a second argument so when fetch returns it returns a promise that resolves with this response object the response object has a method called JSON that you can call and also returns a promise that when resolved will return this object that is the dhih serialized json data from the response to the client when the client made the get request so we're able to use this sort of fetch command to receive the data from the server and then initialize a new instance of stripe passing in that key so that is awesome and we've completed this to do the next thing I want to do is like show how we might add a post route to the server receive some data from the client deserialize that data on the server and then make some take some action put potentially on the server and then for now we'll just echo back the same data that we received so let's head back over to the server and add a post route so we can add a post route here in our route section by saying 'i dot post we pass in the route that we want to receive the post request to so I'm just going to call this my route and then we want to add a handler again so we're gonna say like my route Handler and down here we again need a handler so my route handler is another function the arguments are the same and this time rather than setting up a struct for the data that's outbound we want to set up a struct for the data that's inbound so we can say something like let's see my route params and perhaps will be receiving a payment method which will be a string and that'll be in the like payment method field we might also be receiving like an amount that is an integer we might also be receiving an email address so you could you could build these up to receive and deserialize JSON you can make them even more complex where they're nested and other things but today we're just going to keep it pretty simple so this is how we might set up a my route params and we want to say something like params is equal to this thing my route params and then we're going to use C dot bind to bind the incoming request arguments to params so that DC realizes and then we should be able then we'll be able to access params here so for now I'm just gonna print out the content of per amp so we want to say like here's my payment method that I received and that is going to be under params that payment method okay we could do the same for a mount and email if we wanted amount email okay alright so let's go give this a whirl we want to restart our server undefined data so let's just return with the params that we received so it's just gonna echo back the same exact data that we receive okay so that's fired up alright now that we can test post requests with curl bypassing the - ex post argument so we say curl - X and then the HTTP method that we want to send so in this case we want to send a post request to localhost for - for - slash maje route and we want to pass it some data and the way that we do that is with the - D argument in this case we want to pass a string with some JSON data so we'll say payment method is something like ABC 1 2 3 and then I'm going to pass the amount being maybe 1 2 3 4 and we can pass an email address for Jenny dot Rosen at example.com and the the next argument that we want to pass is a header that tells the server that this is a JSON request so we want to save capital age the capital H argument with content type application JSON and we can hit enter this is making the post request the data that we get back again we're just echoing back the same params that we received but if we look over in the server log here we see that it logged out the payment method the amount in the email so if we want to take some action most commonly in a post route here we're going to be doing things like adding to the database or making an API call or you know sending an email so the the post request is a way for a user to create something on the server and so we could take that data that we received in params and work with that to create some object or create a charge or create a customer things like that so this is how we add a post route on the server let's head over to the client and add it to the client so we want to make a post request from the client we saw how to do that with curl but now I want to do it from the client so let's add a big button here maybe the button just says bye okay and so we want to grab reference to that HTML element the by element so we can do that by ID so we can say document dot get element by ID and we pass in the ID of the element that we want to grab reference to and then the next thing we want to do is add a click handler to the button so we can say by BTN add eventlistener the first argument is the events that we want to listen for in this case click and the second argument is a callback to run when that event happens so we're passing this callback function now I usually include this EDI prevent default so that the if the button is inside of a form when you click the when you click the button it doesn't bubble up to the form and submit the form which causes a full page refresh because typically a form will the job of a form is to submit and post some data back server and so because we're gonna handle that with with JavaScript I often will just put preventdefault here so that we don't cause a full page refresh by submitting the form okay the next thing we want to do is make a post request with fetch so I'm gonna say my route is the path that I want to send this to and you'll notice that there is a second argument to fetch and that is this options object where we can define the HTTP method that we want to use as for our request in this case post we can define the headers telling the server that we're sending JSON and then we want to send the post body this is like the payload of the request so we're going to stringify a JSON object that includes all of the things that we want to pass to the server so a payment method is going to be lets say p.m. card visa amount 1 2 3 email is Jenny Rosen at example.com okay so we're gonna stringify all this data put it in the request body make a post request from the client when the button is clicked and then when that returns similar to the get request it returns with a promise with this response object I've been called JSON on that returns a promise that has this data so in this case the data that we're going to get back will just be the echoed back request body that we sent in so we're just gonna see that same exact body come back alright so let's start restart the server and then go test this out in the browser so if we refresh the page here we see a Buy button if we so we can inspect and walk through all of these requests by right clicking and saying inspect and then opening up the chrome developer console here we can go to the sources tab so there's a whole bunch of really useful tools in each of these tabs under the sources tab if we click on the file that we want to inspect the code form we can find the line of code the line of JavaScript that we want to look at and you can click on the line the line number in the gutter and that will create a break point which will pause execution of your codes that you can sort of inspect the content or like the values of the the variables at those points so if we refresh the page okay so we're gonna fire our fetch request to slash public keys and then let's see if we get into that response body okay right we're grabbing reference to the ID so this is an asynchronous activity right we're making a get request to the server and so we did not enter the success callback immediately instead we continued execution and we're grabbing reference to the ID and we're going to set up an event listener and then what we'll complete execution of this page so if we click Play we're all done and then the the network request returns the event loop picks up that response and then we start processing and we get into this callback here where we're setting the ki the PK test publishable key as the key for our new instance of stripe GS that we're storing into this stripe variable that we would then use to redirect to check out or maybe confirm a card payment or mount some elements on a card element so that is all looking great so we'll continue execution and now we're not going to hit this break point until we click the Buy button so if we click buy now we enter the the buy button click event callback we're preventing default and now we're going to send another post request this time we should be returning back to the console here so we click Play and we get back into the success callback and we have some data and it has the payment method amount an email that we just sent and if we look at the server log we can see that the requests are happening here we see the payment method from the client PM card visa happens to be one of the tests card IDs that you can use so you don't have to tokenize the cards while you're implementing this bit we have an amount and we have the email address so all that is looking awesome one other thing I want to show is the network tab so if you refresh the page here under the network tab you can see all of the different requests that are happening so you'll see a number that are firing off to slash public keys and so we can open one of those up actually going to hit this no-smoking sign to clear things out refresh the page just so that we have all of the requests that are happening just for one page reload so if I click on public keys what's cool is that you'll see the preview you can see the actual response that's coming back from the server under the headers tab you can see that it was a get request the server responded with a 200 ok you can see the exact URL that the request is going to let's see if you click the Buy button we'll see that post request here too and go to the my route and what's nice about this is at the very bottom you can see all of the request payload so this is all the content that we were sending to the server and if we want to go we can go to the preview to see what came back from the server so very helpful tools within the chrome developer chrome developer console all right let's add now a new route to our server to handle requests directly from stripe for web hooks so we'll go back to our server here and ok alright in order to add a web hook handler we need to do a couple of things we need to import the package for working with the web hook object we need to set up a route a post route to go to slash web hook and we need to add a web hook Handler and in the body of the web hook handler I want to talk through the ways that the web hook is a little bit different but before we get into too much I wanted to point out that we do have another episode that is all about web hooks and I also want to give a high-level overview that web hooks are a way for stripe to send a post request directly from the stripe server to your server this is a common API pattern and it is a really useful tool to be notified when events happen so rather than sort of like saying I wonder when a charge is successful or I wonder when the customer is subscription is being updated so one way that you might solve that is by just kind of like polling or constantly fetching all of the subscriptions to see was was the status updated was the status updated was the status updated instead of polling or instead of constantly sort of requesting data from stripe what you can do is create a web hook handler by setting a web hook end point within the stripe dashboard and that's going to act as a URL on your server it's a path to a route on your server that will receive post requests when events happen on your stripe account so you can listen for specific stripe events like checkout session complete or invoice that payments exceeded so these are all different kinds of scenarios that you might want to automate around and you can do that by setting up a web hook handler so they're very powerful we use them for most stripe integrations and today we're going to go through just a really really high-level basics for how to add the web hook handler so the first thing we want to do is add this import statement then we need to add a route etup Post slash web hook web hook Handler and what's different about a web hook endpoint is that the data that's received on the web hook endpoint could be so that the actual content of the data is going to be different based on the type of event that you're receiving so if you're receiving an invoice that payment created or invoice that payments exceeded event the object is going to be an invoice whereas if you receive a customer dot subscription updated event the in the object is going to be a subscription so if we actually take a quick break here and go over to the stripe API reference under Doc's API tight of events types so stripe dot-com flash Doc's API events types and we'll add a link to this in the description you'll see this huge list of event types here so you could add some sort of automation when a count out external account is deleted or you can add an automation when customer subscriptions pending update expired where the trial will end so there's a huge number of event types that we can automate around using web hooks so these are the different types of events that will receive and then this is the type of object that we're going to receive and because the type of object is different depending on the event we need to deserialize the data a little bit differently and so the the post route for a web hook handler you can see the details for how you web hooks build so you might head over to the stripe Docs under web hooks build and see all of the different ways that you can build web hooks so we show sort of like a high level version here and this is kind of what we're going to go through today but you also have ways for checking signatures and we have some best practices that we share in the docs if you're curious again I would check out that other episode and head over to the docks but today we're gonna build just a very simple web hook handler okay web hook handler another thing worth mentioning as we're working through this is that the user the the end customer never actually sees the content that's at the route for a web hook handler the user never sees this this is purely for stripe to send requests directly to your server and you respond directly to stripe there's no redirecting the customer never sees any of this so it's purely for automating when debating different scenarios when events happen on your stripe account okay so the first thing we want to do here is grab the raw request so we're gonna say the request is equal to C dot request this is the echo request and we want to read the payload directly from the request body and we want the raw payload so we can do that using IO util read all and passing in the request body so before we go too far I need to import IO util okay so now we've got the payload if there's an error reading that we want to return an error otherwise we want to unmarshal the payload into a stripe event so we want to create a new event object that is of type striped event and we want to unmarshal the payload into this event so we're gonna say error equals json dot unmarshal the payload into this event object and then if there's an error we want to return that again believe I might need to also import JSON let's see import dye do JSON yet no encoding JSON okay alright so we are unmarshal in the event using this JSON package and so now the event object should contain all of the data for the event in sort of like a really high-level event object and the content of the actual object that's inside of the event so the event is kind of like a wrapper that has some metadata around the actual object and so now we need to check the event type and depending on the event type we need to again unmarshal the internal object into a real object so we're gonna say something like well we'll switch on the event type event dot type and if the event type is for instance checkout session completed then we want to unmarshal the internal data into a session object so here we're gonna save our session is equal to striped check out or is not equal that's a stripe checkout session so it's of type stripe checkout session and we don't use semicolons okay so now we need to unmarshal the data that's as part of this event object into the session so we want to say something like error is going to be json dot unmarshal and this time we want to pass in the session or note I'm sorry we want to pass in yeah this the session is going to be the second argument the first argument is going to be the data that we want to unmarshal in this case is going to be event dot data dot raw and again we need to check if there's an error return the error okay and then we've what we can do now is that now that we have unmarshal the internal object we have reference to the session so in this case we received a session in the invoice that payment succeeded we might receive in an invoice so here we can print out the session object sessioned ID so let's just say like Rhys let's check out check out session completed and we'll pass the the session ID and then finally we just returned with JSON at the very end in this case we can just send back we can send back what are we going to send back we can send back the we can send back the entire event if we wanted okay now if we wanted to operate on another event type we might do that like this where we say instead of checkout session completed we want to work on maybe invoice stop payment succeeded or we might want to operate on invoice dock created okay there's a very very common web hook endpoint or web hook event types to operate on so we've got this checkout session completed now let's go check up let's go test it out and use the stripe CLI to to listen for events that are happening on our account and then also trigger an event so it looks like we imported what didn't actually use web hook right okay we don't because we're not doing any signature verification or any of that we don't even need to import web hook at this point all right so I fired up a server I'm gonna use stripe listen forward to localhost four - four - slash web hook so you need to define the whole path if your server is HTTP only you need to specify the scheme if you're on localhost you can actually just use the port in the path you can also limit this to some set of events if you wanted a whole bunch of different tools that are explained in more detail in the stripe CLI episode so stripe listen is going to set up a direct connection from stripe to your local machine so that when events fire on your account you'll receive those locally and they can be forwarded to your local web server it's kind of like setting up a tunneling tool but without needing to use something like and rock so here we go we've got our stripe listener set up now we could make a just like making API request if we knew the form for the thing that we wanted to create or we could go through our flow now and the events would be passed to our local server there's another tool within the stripe CLI called trigger so we can say stripe trigger and pass it in event type so in this case we're playing around with checkout dot session completed now this is gonna set up a bunch of fixtures that make API requests that will result in the event type that we passed so in order to get to a checkout session completed event we need to create a checkout session we need to you know send the user to the checkout session have them check out so there's a whole bunch of different API requests that are gonna happen and at the end we'll have a checkout session completed event that fires now these are actually happening on your account and they are firing and we're passing those to our local server and if you look in the server log here we do see that we receive this checkout session completed event so everything is working great where we've got a web hook handler we're up and we're handling events and if we wanted to we can take action based on this so we could say something like when we receive the checkout session completed event now we want to like send an email we want to like pull from inventory we want to like send the goods maybe we also want to like ding ding in slack or something or send a text message so these are all kinds of things that you might automate inside of a web hook handler so this is really the boilerplate for stripe samples hopefully that was useful if you have any feedback please leave it for us in the feedback form below we'd love to hear from you so if you wanted to reach out we are on the IRC channel in freenode under the the the stripe channel we're also available at striped support comm please let us know if you have any questions we'd be happy to help we want to help you build your business so yeah don't hesitate to reach out alright until next time bye friends you

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