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  1. Technical
  2. Hooks Functions
  3. Developer Defined

cbak / Callback

The callback function of your hook

Last updated 2 months ago

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Concepts

Behaviour

  • cbak is a user defined function called by xahaud in order to inform your hook about the status of a previously emitted transaction

  • State changes and further emit calls can be made from cbak but it cannot rollback a transaction.

  • When cbak is executed the emitted transaction to which the callback relates is now the originating transaction.

Definition

int64_t cbak (
    uint32_t what
)
type Callback = (reserved: number) => number

Example

int64_t cbak(uint32_t reserved)
{
    return 0;
}

const Callback = (reserved: number) => {
  return 0
}

Parameters

Name
Type
Description

reserved

uint32_t

if 0: - the emittted transaction to which this callback relates was successfully accepted into a ledger. If 1 - the emitted transaction to which the callback relates was NOT successfully accepted into a ledger before it expired.

Name
Type
Description

reserved

number

if 0: - the emittted transaction to which this callback relates was successfully accepted into a ledger. If 1 - the emitted transaction to which the callback relates was NOT successfully accepted into a ledger before it expired.

Return Code

Type
Description

int64_t

An arbitrary return code you wish to return from your hook. This will be present in the metadata of the originating transaction.

Type
Description

number

An arbitrary return code you wish to return from your hook. This will be present in the metadata of the originating transaction.

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