Discarding Events

Usage
Parameters

Usage

Node.js
Python

subscription.on(async (event) => {
  if (!isValidOrder(event.payload)) {
    await subscription.discard(event.idem, "Invalid order data");
    return;
  }

  await processOrder(event.payload);
  await subscription.ack(event.idem, event.block);
});

async def handle_order(event):
    if not is_valid_order(event.payload):
        await subscription.discard(event.idem, "Invalid order data")
        return

    await process_order(event.payload)
    await subscription.ack(event.idem, event.block)

subscription.on(handle_order)

Parameters

Parameter	Type	Required	Description
`idem`	`string`	Yes	Unique event ID
`reason`	`string`	No	Optional reason for discarding

Discarded events cannot be recovered. Use defer for temporary failures.

Acknowledging Messages Deferring Events

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Home:

Guides

What Are:

How Does EnSync:

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How To:

Client SDKs

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​Usage

​Parameters

Usage

Parameters