RE: 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 --//


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