Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-94907

Allow IDL server parameter to be of type IDL enum

XMLWordPrintableJSON

    • Type: Icon: New Feature New Feature
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • None
    • Server Programmability

      The following example will cause the IDL compiler to generate C++ code which fails to compile

       

      enums:
    QueryPlanRankerMode:
        type: string
        values:
            kAutomaticCE: "automaticCE"
            kHistogramCE: "histogramCE"
            kSamplingCE: "samplingCE"
            kMultiPlanning: "multiPlanning"

server_parameters:
  planRankerMode:
    description: "Enable cost-based ranking of query plans."
    set_at: [ startup, runtime ]
    cpp_varname: planRankerMode
    cpp_vartype: synchronized_value<QueryPlanRankerModeEnum>
    default:
        expr: QueryPlanRankerModeEnum::kAutomaticCE
    redact: false

       

      The current workaround is to generate the server parameter as a cpp_class, implement an append and setFromString function and access it at runtime using ServerParameterSet::getNodeParameterSet().

      This feature request will improve the usable of IDL. I've run into two cases in the past month where this would be useful.

            Assignee:
            Unassigned Unassigned
            Reporter:
            ben.shteinfeld@mongodb.com Ben Shteinfeld
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

              Created:
              Updated: