Can't call handleEvents when using functionalStrategy to create AIAgent

[miduch]

Hi, I tried to create a very simple math agent following example from https://docs.koog.ai/functional-agents/ which is using functionalStrategy.
I keep getting Unresolved reference for handleEvents

It does work fine with other e.g. singleRunStrategy

koog = "0.6.0"

[aozherelyeva]

Hi @miduch! Thank you for bringing this to our attention.

Indeed, it's a bug. I see that the handleEvents feature is only available for graph-based agents, not functional agents. singleRunStrategy() returns AIAgentGraphStrategy - this creates a graph-based agent that supports handleEvents, and
functionalStrategy() returns AIAgentFunctionalStrategy - this creates a functional agent with a different context that doesn't support handleEvents. That's because the handleEvents function is an extension on GraphAIAgent.FeatureContext, so it's only available when using graph-based strategies.

I created an issue, so please feel free to follow it.

The simplest workaround would be to use the old syntax install(EventHandler)

val mathAgent = AIAgent<String, String>(
        systemPrompt = "You are a precise math assistant.",
        promptExecutor = simpleOllamaAIExecutor(),
        llmModel = OllamaModels.Meta.LLAMA_3_2,
        strategy = functionalStrategy { input -> // Define the agent logic
            // Make one LLM call
            val response = requestLLM(input)
            // Extract and return the assistant message content from the response
            response.asAssistantMessage().content
        }
    ) {
        install(EventHandler) {
            ...
        }
    }