Function isValidConnection

packages/ui/src/utils/genericHelper.js:426–461

(connection, reactFlowInstance)

}

export const isValidConnection = (connection, reactFlowInstance) => {
    const sourceHandle = connection.sourceHandle
    const targetHandle = connection.targetHandle
    const target = connection.target

    //sourceHandle: "llmChain_0-output-llmChain-BaseChain"
    //targetHandle: "mrlkAgentLLM_0-input-model-BaseLanguageModel"

    let sourceTypes = sourceHandle.split('-')[sourceHandle.split('-').length - 1].split('|')
    sourceTypes = sourceTypes.map((s) => s.trim())
    let targetTypes = targetHandle.split('-')[targetHandle.split('-').length - 1].split('|')
    targetTypes = targetTypes.map((t) => t.trim())

    if (targetTypes.some((t) => sourceTypes.includes(t))) {
        let targetNode = reactFlowInstance.getNode(target)

        if (!targetNode) {
            if (!reactFlowInstance.getEdges().find((e) => e.targetHandle === targetHandle)) {
                return true
            }
        } else {
            const targetNodeInputAnchor =
                targetNode.data.inputAnchors.find((ancr) => ancr.id === targetHandle) ||
                targetNode.data.inputParams.find((ancr) => ancr.id === targetHandle)
            if (
                (targetNodeInputAnchor &&
                    !targetNodeInputAnchor?.list &&
                    !reactFlowInstance.getEdges().find((e) => e.targetHandle === targetHandle)) ||
                targetNodeInputAnchor?.list
            ) {
                return true
            }
        }
    }
    return false
}

export const isValidConnectionAgentflowV2 = (connection, reactFlowInstance) => {
    const source = connection.source