rocket_error

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[zenith sluice]

Hi there, what's the PaymentIntent ID?

[quasi meteor]

pi_3POSohHvAVLYAKEc1UmwGdcc

so this issue arised today but it has worked fine for hundreds of payments before

so i'm unsure as to why

the customer said nothing strange occurred during the checkout process

here is the corresponding webhook event id as well if this helps

evt_1POSomHvAVLYAKEcck1qBpUt

[zenith sluice]

https://dashboard.stripe.com/logs/req_DxaRDk4xdXumcp https://dashboard.stripe.com/logs/req_FaoKzoWxllF7ET so these are the requests that attempt the capture the payment_intent, and they are created from a server using your API key.

Have you checked these duplicate captures with your engineer ?

[quasi meteor]

oh I am the engineer

the thing that's perplexing is that I only make a capture request once

is there a way I can share my endpoint code privately?

[zenith sluice]

discord is a public channel. If you don't feel comfortable sharing your code here, you can reach out to support, and we'll continue helping you through emails https://support.stripe.com/contact/email

[quasi meteor]

okay that's alright

i'll omit certain parts then

is the origin of the error from the webhook?

I see that for evt_1POSomHvAVLYAKEcck1qBpUt, there was a 500 error

https://codeshare.io/8Xq0oJ

so I'm wondering if it has to do with my updating of the customer?

[zenith sluice]

I don't think hey they are related. evt_1POSomHvAVLYAKEcck1qBpUt wasn't sent successfully because your endpoint responded 500. Have you check your endpoint logs?

[quasi meteor]

yes, unfortunately i haven't been able to figure out what it is from the logs

[zenith sluice]

Hmm, you are right, I think they are connected.

Since your endpoint returned 500, stripe will automatically resend the webhook event, and trigger the capture call in the webhook handler.

[quasi meteor]

so it seems like there was an issue parsing json?

i'm not sure what could cause that though

considering this issue didn't occur with previous transactions

[zenith sluice]

Does your log tell you which line of the code that throws this error?

[quasi meteor]

unfortunately it doesn't

but it does say JSON.parse

I have a line that says

const stripe = Stripe(process.env.STRIPE_SECRET_KEY);
  const requestHeaders = new Headers(request.headers);
  const signature = requestHeaders.get("stripe-signature");
  if (!signature) {
    return NextResponse.json({ error: "Unauthorized request." });
  }
  const signingSecret = process.env.STRIPE_SIGNING_SECRET;
  const body = await request.text();

  let event;
  try {
    if (!signature || !signingSecret) return;
    event = stripe.webhooks.constructEvent(body, signature, signingSecret);
  } catch (err) {
    console.log(`❌ Error message: ${err.message}`);
    return NextResponse.json({ err: err.message });
  }
...
const items = JSON.parse(event.data.object.metadata.items); //Suspect line?

however, checking evt_1POSomHvAVLYAKEcck1qBpUt seems to be fine

the metadata is there

oh yeah if it helps, I pasted my code here https://codeshare.io/8Xq0oJ

[zenith sluice]

Looks like it errs when parsing [{\"productId\":\"prod_OP1RocO0GBZk1J\",\"quantity\":1}] to json?

[quasi meteor]

I tried recreating it and it seemed to work?

[zenith sluice]

Why don't you just directly set the json data to the metadata, so that you don't need to convert from String to json?

[quasi meteor]

could you elaborate

I don’t quite get it😓

oh is this when I create a checkout session?

are you saying I can set metadata of a checkout session to be a JSON object directly?

as opposed to stringifying

[zenith sluice]

You can just set your metadata as

items:[{
  productId: 'xyz',
  quantity: 1
}]

In fact you can retrieve the same data from checkout session's line_items https://docs.stripe.com/api/checkout/sessions/object#checkout_session_object-line_items

[quasi meteor]

is this available in the event?

[zenith sluice]

line_items is not included in checkout session object by default, so you need to expand it https://docs.stripe.com/api/expanding_objects

[quasi meteor]

on the webhook endpoint side, when it receives the event

does it have access to line items?

[zenith sluice]

The event object doesn't include line_items, but you can retrieve the checkout session object again with line_items expanded.

[quasi meteor]

ok so

the event object is a checkout session right

specfiically checkout.session.completed

and from here, I can get the id via event.data.object.id

using this, I can retrieve this by looking up the checkout session via id and expanding line items?

[zenith sluice]

Yes you are right

[quasi meteor]

instead of expanding, does await stripe.checkout.sessions.listLineItems suffice?

[zenith sluice]

Sure that works as well

[quasi meteor]

const checkoutSessionId = event.data.object.id;
const lineItems = await stripe.checkout.sessions.listLineItems(
  checkoutSessionId,
  {
    limit: 100,
  }
);
const items = lineItems.data;```

does that look correct?

[zenith sluice]

Yes, looks good to me!

[quasi meteor]

for (const item in items) {
  ...
}```

Inside this loop, i'd just call `item.price.product` to get the product id, and then `item.quantity` to get the quantity