Invoking Functions

Call Invoke with:

Field	Value
Function Name	The function name or ARN. Add :alias or :version to call a specific alias or version, for example GrantReward:live.
Invocation Type	RequestResponse waits for the function and returns its response. Event starts the function and returns right away, without a response. DryRun only checks that you are allowed to call it. Not set means RequestResponse.
Log Type	Tail returns the last 4 KB of the function's log in Log Result, base64-encoded.
Client Context	Optional base64-encoded JSON that the function gets as context.
Body	The event that the function gets, as JSON.

For example, with this body:

{ "playerId": "Player1", "reward": "gold_chest" }

the function gets event.playerId and event.reward in Node.js, or event["playerId"] in Python.

The result

Field	Description
Status Code	200 for RequestResponse, 202 for Event, 204 for DryRun.
Payload	What the function returned, usually JSON. Parse it with a JSON plugin or Unreal's JSON Blueprint Utilities.
Function Error	Unhandled if the function threw an error. The node still reports Success, so check this field. The error is in Payload.
Log Result	The log, if Log Type is Tail.
Executed Version	The version of the function that ran.