pedrobalbino
pedrobalbino
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ATApache TinkerPop
Created by pedrobalbino on 6/14/2023 in #questions
Help Needed with Sample Method in Gremlin-Go
Hello Apache TinkerPop Community, I'm currently working on a Go project using the Apache TinkerPop for graph operations, and I've encountered a problem I'm hoping someone could assist with. I'm trying to retrieve a specified number of random users from my graph with the following function: 
func (r userRepository) GetNRandomUsers(qty int, ignoreIds []string, microverseId string) ([]string, error) {
    users := r.g.Users()
    if microverseId != "" {
        users.Filter(__.UserInMultiverse(microverseId))
    }
    if len(ignoreIds) > 0 {
        users.Not(__.HasId(ignoreIds))
    }
    queryResponse, err := users.Id().Sample(qty).Next()
    if err != nil {
        return nil, err
    }
    return queryResponse.GetInterface().([]string), nil
}
func (r userRepository) GetNRandomUsers(qty int, ignoreIds []string, microverseId string) ([]string, error) {
    users := r.g.Users()
    if microverseId != "" {
        users.Filter(__.UserInMultiverse(microverseId))
    }
    if len(ignoreIds) > 0 {
        users.Not(__.HasId(ignoreIds))
    }
    queryResponse, err := users.Id().Sample(qty).Next()
    if err != nil {
        return nil, err
    }
    return queryResponse.GetInterface().([]string), nil
}
However, I keep encountering an error on the line queryResponse, err := users.Id().Sample(qty).Next() which is using the .Sample(qty) method. The error message I'm receiving is: "Error occurred during operation gremlinServerWSProtocol.responseHandler(): 'E0502: error in read loop, error message '{code:87 message:{"requestId":"4ce6dc05-6fd1-49d7-b5d5-eea85bf7db2a","code":"InternalFailureException","detailedMessage":"null: .sample(Long)"} attributes:map[]}'. statusCode: 87'" Regrettably, I couldn't find any additional information in the documentation or on other channels which could provide me with a solution to this issue. If anyone could provide insights on what I might be doing wrong or suggest potential fixes, it would be greatly appreciated. Moreover, if you need more context or further clarification, please let me know and I'll be more than happy to provide it. Best regards.
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