Events

Smart Contract Events#

Event Option#

Events in aelf smart contracts are used to represent occurrences during execution. These events are logged in the transaction traces.

Example of an event definition:

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message Transferred {
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    option (aelf.is_event) = true;
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    aelf.Address from = 1 [(aelf.is_indexed) = true];
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    aelf.Address to = 2 [(aelf.is_indexed) = true];
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    string symbol = 3 [(aelf.is_indexed) = true];
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    sint64 amount = 4;
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    string memo = 5;
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}

To trigger this event in a contract:

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Context.Fire(new Transferred()
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{
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    From = from,
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    To = to,
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    ...
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});

External code can monitor this event after the transaction execution.

Edited on: 15 July 2024 03:27:19 GMT+0