Automate your stock with "Declared Stock"

The "Declared Stock" feature allows you to declare the number of keys you have for particular product without placing the keys to Eneba stock.

During the purchase process, Eneba.com will call your system twice. The first call will ask you to reserve the keys for a specific order - a Reservation request. The second one will ask you to provide the purchased keys, called a Provision request.

Example

You create an auction with 10 keys and using the “Declared Stock” feature declare 50 keys. This means that Eneba.com will attempt to sell 60 keys in total. First, the platform will sell 10 existing keys, then will use the "Declared Stock" feature to retrieve 50 keys more. If you create an auction with no keys and with the "Declared Stock" feature declare that you have 50 keys, then Eneba.com will attempt to retrieve those 50 keys and sell them.

Important

  • It is required that your DeclaredStock implementation on the Eneba sandbox is fully tested (see the Testing the "Declared Stock" in the Eneba sandbox guide).
  • If the Provision request will end up in a failure, you will be charged the auction’s commission amount under the Auction unfulfilled sale fee.
  • Eneba will hide your auction if the ratio of failed and completed requests in last hour is higher than the threshold:
    • Reservation request:
      • log(failed_requests)/log(completed_requests) >= 0.4
      • Auction will be hidden for 2 hours.
      • Eneba might prolong the hidden duration on consecutive failures
    • Provision request:
      • log(failed_requests)/log(completed_requests) >= 0.2
      • Auction will be hidden for 2 hours.
      • Eneba might prolong the hidden duration on consecutive failures

Sequence diagram

Following sequence diagram displays the interaction between the Buyer, Eneba, and Merchant when using the "Declared Stock" feature. This example illustrates the successful communication between Eneba and Merchant when a purchase is made.

BuyerEnebaMerchantloop[3x timeout: 60s, sleep: 5s]Adds items to cartProceeds to the checkoutMakes one "Reservation" callbackSuccessfully reserves keysRedirects to payment processorReturns after successful paymentMakes the "Provision" callbackSuccessfully provides keysDelivers keysBuyerEnebaMerchant

1. Requirements

To use this feature you need to register two API callbacks with types:

  • DECLARED_STOCK_RESERVATION
  • DECLARED_STOCK_PROVISION

Please read more on related mutations/queries: P_registerCallback, P_removeCallback, P_apiCallbacks.

You also need to activate the "Declared Stock" feature in the production, please read more on P_enableDeclaredStock mutation.

Optionally, you may want to register the DECLARED_STOCK_CANCELLATION callback, this way you will be able to receive a callback when the order gets canceled.

In order to use "Declared Stock" feature you must prove your domain ownership. Please read more on P_registerCallback mutation.

2. Callback payloads

Every request from the Eneba.com side will be authenticated by the Authorization header using the Bearer type and value, submitted when registering the API callback by P_registerCallback mutation.

Authorization: Bearer {P_API_Callback:authorization value}

Reservation

The system will make one request with a payload below to the Reservation endpoint with a 60s timeout. In case of error, the buyer will be informed about the unavailable stock.

Request

Callback fields:

FieldTypeDescription
actionStringRESERVE indicates the Reservation request
orderIdUUID v1Unique order ID
originalOrderIdUUID v1 | nullIn some situations, requests get retried. When this occurs, the orderId will change, but the initial request's ID will be stored in originalOrderId, if available.
auctions[Auction]A collection of your auctions in the order, see below

Auction fields:

FieldTypeDescription
auctionIdUUID v1Auction ID the purchase is made for
keyCountIntThe number of keys to purchase for a given auction
priceMoneyAn amount and currency pair with the price for a single key

Example:

{
  "action": "RESERVE",
  "orderId": "6ce660cc-4abe-11ed-b878-0242ac120002",
  "originalOrderId": null,
  "auctions": [
    {
      "auctionId": "6ce664fa-4abe-11ed-b878-0242ac120002",
      "keyCount": 2,
      "price": {
        "amount": 1500,
        "currency": "EUR"
      }
    }
  ]
}

We recommend holding the reservations for up to 48 hours - this is the longest payment await duration in Eneba.

Response

By successfully responding (HTTP status 200) to the Reservation request with the payload structure below, you indicate that you can fully fulfill the reservation.

Response fields:

FieldTypeDescription
actionStringRESERVE indicates the Reservation response
orderIdUUID v1Unique order ID
successBooleanConfirmation that the reservation was successful

Example:

{
  "action": "RESERVE",
  "orderId": "6ce660cc-4abe-11ed-b878-0242ac120002",
  "success": true
}

Provision

The system will make three attempts with a 5s sleep interval and 60s timeout for you to respond. In case of final failure, the order will be canceled. Example:

  • Request 1: Fails immediately
  • Wait time: 5 seconds
  • Request 2: Fails after timeout (60 seconds)
  • Wait time: 5 seconds
  • Request 3: Fails
  • Order gets cancelled

Request

Callback fields:

FieldTypeDescription
actionStringPROVIDE indicates the Provision request
orderIdUUID v1Unique order ID
originalOrderIdUUID v1 | nullIn some situations, requests get retried. When this occurs, the orderId will change, but the initial request's ID will be stored in originalOrderId, if available.

Example:

{
  "action": "PROVIDE",
  "orderId": "6ce660cc-4abe-11ed-b878-0242ac120002",
  "originalOrderId": null
}

Response

The following structure will be expected in the successful (HTTP status 200) response to the Provision request.

FieldTypeDescription
actionStringPROVIDE indicates the Provision response
orderIdUUID v1Unique order ID
successBooleanIndicates the successful provision
auctions[Auction]A collection of your auctions in the order, see below

Auction fields:

FieldTypeDescription
auctionIdUUID v1Auction ID the keys are provided for
keys[Key]A collection of keys, see below

Key fields:

FieldTypeDescription
typeEnumEither TEXT or IMAGE. Indicates the key format
valueStringA plain-text or base64-encoded image
filenameStringIf type: IMAGE - indicates the file name for an image

Example:

{
  "action": "PROVIDE",
  "orderId": "6ce660cc-4abe-11ed-b878-0242ac120002",
  "success": true,
  "auctions": [
    {
      "auctionId": "6ce664fa-4abe-11ed-b878-0242ac120002",
      "keys": [
        {
          "type": "TEXT",
          "value": "QS8ND-G0W76-BTSQO-WAAJA-6LCD3"
        },
        {
          "type": "IMAGE",
          "value": "HwcqeNQhr1EfdJoHxko+ymjzBta/ipV6r9sigAAAABJRU5ErkJggg==",
          "filename": "Half-Life 3"
        }
      ]
    }
  ]
}
  • Image type keys provided in Provision response must be of the following types: jpg, jpeg, png.
  • Only raw base64 is supported. Please remove any HTML/CSS attributes, like data:image/png;base64,

Cancellation

When a user or a system cancels the order, a cancellation callback will be issued informing you to release the keys for the specific order. The system will make two attempts with a 5s sleep interval and 60s timeout for you to respond.

Request

Callback fields:

FieldTypeDescription
actionStringCANCEL indicates the Cancellation request
orderIdUUID v1Unique order ID

Example:

{
  "action": "CANCEL",
  "orderId": "6ce660cc-4abe-11ed-b878-0242ac120002"
}

Response

No response body is expected. Successful (HTTP status 200) response confirms the cancellation.

2. Activating the "Declared Stock"

To prevent unwanted reputation damage on production environment, we require you to integrate your implementation of "Declared Stock" with our Sandbox Environment.

We have a dedicated guide to help you to test your "Declared Stock" integration on the Sandbox.

When your integration is ready on the Sandbox, you are now able to activate the feature by calling P_enableDeclaredStock mutation.

3. Tracking your "Declared Stock" errors

You may find it useful to get the errors we have found while calling your "Declared Stock" integration. For this you can call the P_declaredStockResult query.

4. Disabling "Declared Stock" feature

In order to disable "Declared Stock" feature, you have to update your auction with declaredStock: null Not providing declaredStock field will not disable "Declared Stock" feature, neither setting it to zero.

When the declaredStock value becomes zero, Eneba still will have auction enabled and will issue a Reservation callback. This is done due to possible delays between stock coming down to zero, and you still have not updated the auction with a fresh declaredStock value.

Please find more on S_updateAuction mutation.

5. Update the "Declared Stock" value often

To keep your stock information up-to-date, we recommend updating the auction's declaredStock value often.

6. Key returns

You should expect that the purchased keys can be returned. The returned keys will be stored in the Eneba stock. You can leave them there or could remove them by calling the S_updateAuction mutation.

7. Additional sequence diagrams

Canceled sale

The following example illustrates the canceled sale when User declines the payment or Eneba cancels the order.

BuyerEnebaMerchantbreak[purchase fails]Adds items to cartProceeds to the checkoutMakes the "Reservation" callbackSuccessfully reserves keysRedirects to payment processorPayment gets declinedMakes the "Cancellation" callbackNot receives keysBuyerEnebaMerchant

Unfulfilled sale

The following example illustrates two scenarios when Merchant is unable to fulfil the callbacks.

  • Merchant failed to fulfil the Reservation, which may result in disabled auction.
  • Merchant failed to fulfil the Provision, which result in commissions being charged and auction may be disabled.

BuyerEnebaMerchantMay disable merchant auctionbreak[purchase fails]...loop[3x]May disable merchant auctionWill charge merchant auction commissionbreak[purchase fails]Adds items to cartProceeds to the checkoutMakes the "Reservation" callbackFails to fulfil "Reservation" callback it timeNot receives keysAdds items to cartProceeds to the checkoutMakes the "Reservation" callbackSuccessfully reserves keysRedirects to payment processorReturns after successful paymentMakes the "Provision" callbackFails to fulfil "Reservation" callback it timeNot receives keysBuyerEnebaMerchant

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