Setting my deserializer causes ui-app docker not to start

Flowable Engine
1

Hi

I’m using the Flowable-ui docker to run my apps (configured it to work against my mysqldb).
I’m running a springboot application with the flowable engine - and all is working fine.

But now - i had to override the json deserializer in order to perform json-schema validation for my incoming events.

In my inbound channel config file i added the following:
“deserializerDelegateExpression”: “{flowerJsonWithValidatorDeserializer}", "payloadExtractorDelegateExpression":"{flowerJsonFieldToMapPayloadExtractor}”,

And everything works fine - my deserializer is working as expected - and flow run correctly.

But - when i stop my app docker - and try to restart it - it fails to restart with following error:
org.flowable.common.engine.api.FlowableException: Unknown property used in expression: ${flowerJsonWithValidatorDeserializer}

Any advice will be appreciated
Thanks
Inbal

2

How are you adding your bean ‘flowerJsonWithValidatorDeserializer’ to the docker container in the first place? How are you configuring the engine configuration?

3

Thanks for replying
I have the UI Apps running on a docker against my mysqldb - using the rest api that runs as part of the flowable-ui docker. (i’m thinking maybe this is the problem - maybe i should make the UI work against the rest api exposed by my springboot app instead ?)

My springboot app runs against the same db.
In my springboot app i created the flowerJsonWithValidatorDeserializer & flowerJsonFieldToMapPayloadExtractor both are spring components.

In my inbound channel file i configured the channel to use those:
{
“key”: “flowerInboundChannel”,
“name”: “Flower Inbound Channel”,
“description”: “Flower Inbound Channel”,
“channelType”: “inbound”,
“type”: “rabbit”,
“deserializerType”: “expression”,
“deserializerDelegateExpression”: “{flowerJsonWithValidatorDeserializer}", "payloadExtractorDelegateExpression":"{flowerJsonFieldToMapPayloadExtractor}”,
“channelEventKeyDetection”: {
“jsonField”: “msgKey”
},
“queues”: [“flowerEventsQueue”]
}

And indeed they are called when events arrive on the channel.

Problem is that if i stop the UI app docker and try to start it again - i get the following error:
org.flowable.common.engine.api.FlowableException: Unknown property used in expression: ${flowerJsonWithValidatorDeserializer}

Will appreciate any advice on this one
Thanks
Inbal