With a basic understanding About Events & Webhooks let's see exactly how they work using the "CreateOrderEvent".

1. A Webhook is coded with custom logic in an endpoint in a Client Web Application

   Learn how to Code A Webhook

2. The Webhook is configured so the endpoint is subscribed to the CreateorderEvent.

   Learn how to Configure A Webhook

3. A customer places an order on the site.

   A "CreateOrderEvent" is created.

4. Directscale sends the webhook endpoint an HTTP POST payload with the information of the CreateOrderEvent.

   See an example of an HTTP POST Payload

Continous Polling vs. Webhook Subscriptions

Webhooks are a performant alternative to continuous polling. Figure 1 shows the comparison using the Order Created event.

Payloads

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The HTTP POST payload to a Client Web Application will include

• URL
  • the endpoint of the Client Web Application that will receive the Event data and implement custom logic
• Headers
  • ContentType | "application/json; charset=UTF-8"
  • Authorization | bearer token used by Client Web Applications to authorize the requests. See Securing Client Web Applications for more details
  • X-Directscale-Client-Id | "The unique ID for the client"
  • X-Directscale-Message-Id | "A unique ID that can be used to ignore duplicate messages "
  • X-Directscale-User | "The username of the user who initiated the call. Only included when the user context is available"
• Body
  • Relevant data to the Event in a JSON format
  • All JSON bodies will have the EventDateUtc and EventType properties

Example of an HTTP POST payload to a Client Web Application

curl --location --request POST 'https://acme.clientextension.directscale.com/api/webhookRecieverEndpoint' \
--header 'Content-Type: application/json; charset=UTF-8' \
--header 'Authorization: Bearer mcwod!j9xn2fylqo%2692kd09$jdi1l' \
--data-raw '{
    "OrderNumber":1,
    "OrderPaymentId":1,
    "PaymentStatus":"Paid",
    "PaymentType":"Charge",
    "Amount":20.0,
    "CurrencyCode":"USD",
    "EventDateUtc":"2021-10-12T18:07:26.8794398Z",
    "EventCategory":"OrderEvents",
    "EventType":"CreateOrderPaymentEvent"
}'

📝Parameter definitions:

• OrderStatus – “Paid”, “Pending Payment”, etc.
• OrderTypes – Standard=1, AutoShip=2. Learn more about Order Types.
• ClientId – Your company unique identifier found in your Admin URL ({Client_ID}.directscale.com)
• AssociateId vs. BackOfficeId – Learn the difference in Understanding Platform IDs
• DistributorId – Refers to the Associate's numerical Associate ID (also known as the DirectScale ID).

Custom Events

Client developers can trigger custom events inside of a Process Hook to offload processing that could be done asynchronously instead of in-process. Use the EventService.PostEvent Extension API to trigger a custom event.

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Using the C# Client Library?

You can use the IEventService in the C# Client Library to call the Extension API.