DataFlex

Get Diagnostic JSON from the Last SSH Method Call

Demonstrates the Chilkat Ssh.GetLastJsonData method, which copies structured diagnostic information from the most recently called method into a JsonObject. The only argument is the JsonObject that receives the information.

Background: This gives machine-readable diagnostics as an alternative to parsing LastErrorText, which is useful for logging or automated error handling. Many methods produce little or no additional JSON, so expect an object that is sometimes nearly empty. Authentication passwords and private-key passphrases are never included, so the output is safe to log.

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Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoSsh
    Integer iSshPort
    String sPassword
    String sOutput
    Variant vJson
    Handle hoJson
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

    //  Demonstrates the Ssh.GetLastJsonData method, which copies structured diagnostic information
    //  from the most recently called method into a JsonObject.  The only argument is the JsonObject
    //  that receives the information.

    Get Create (RefClass(cComChilkatSsh)) To hoSsh
    If (Not(IsComObjectCreated(hoSsh))) Begin
        Send CreateComObject of hoSsh
    End

    Move 22 To iSshPort
    Get ComConnect Of hoSsh "ssh.example.com" iSshPort To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoSsh To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    Move "mySshPassword" To sPassword

    Get ComAuthenticatePw Of hoSsh "mySshLogin" sPassword To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoSsh To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComQuickCommand Of hoSsh "uname -a" "utf-8" To sOutput
    Get ComLastMethodSuccess Of hoSsh To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoSsh To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln sOutput

    //  Retrieve diagnostic details about the call that was just made.  Many methods produce little
    //  or no additional JSON.  Passwords and private-key passphrases are never included.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get pvComObject of hoJson to vJson
    Send ComGetLastJsonData To hoSsh vJson

    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    Send ComDisconnect To hoSsh


End_Procedure