Use sess *sp from vcl

[Johnny Halfmoon]

>> Hi,
>>   Is is possible to use the sp available from vcl and which is used as a
>>  parameter for the compiled vcl C functions? I am especially interested in
>>  using sp->t_req the time of receiving the request for the session pointer.

Hi Neel,

doing stuff like sp->t_req is not going to work and there is currently  
no VRT function that gives you access to that parameter. The way I  
worked around this is to use VRT_r_now(sp). The example below is an  
example of how I solved this issue.

Cheers,

Johnny

//--- Example code follows just about now... ---//

C{
     double  g_ReqStartTime,
             g_FetchStartTime,
             g_FetchEndTime;
}C

sub vcl_recv
{
     C{
         g_ReqStartTime = VRT_r_now(sp);
         g_FetchStartTime = 0;
     }C
}

sub vcl_miss
{
     C{
        g_FetchStartTime = VRT_r_now(sp);
     }C
}

sub vcl_pass
{
     C{
         g_FetchStartTime = VRT_r_now(sp);
     }C
}

sub vcl_fetch
{
     C{
         g_FetchEndTime = VRT_r_now(sp);
     }C
}


sub vcl_deliver
{
     C{
         double          ProcessTimeDelta,
                         BackendTimeDelta,
                         TotalTimeDelta;

        double CurrentTime = VRT_r_now(sp);

        TotalTimeDelta = (CurrentTime - g_ReqStartTime);
        if (g_FetchStartTime == 0) {
            ProcessTimeDelta = TotalTimeDelta;
            BackendTimeDelta = 0;
        } else {
            ProcessTimeDelta =   (g_FetchStartTime - g_ReqStartTime) +
                                 (CurrentTime - g_FetchEndTime);
            BackendTimeDelta =   (g_FetchEndTime - g_FetchStartTime);
        }

        syslog(LOG_INFO, "Example: t0:%.6f t1:%.6f t2:%.6f",
            TotalTimeDelta,
            BackendTimeDelta,
            ProcessTimeDelta);

     }C
}

//--- EOF --//