varnishevent: added length high watermark

bin/varnishevent/varnishevent.c

@@ -110,7 +110,7 @@ VTAILQ_HEAD(insert_head_s, fd_t);
 static struct insert_head_s insert_head = VTAILQ_HEAD_INITIALIZER(insert_head);
 
 static unsigned seen = 0, open = 0, submitted = 0, not_logged = 0, occ_hi = 0,
-    waits = 0, len_overflows = 0, hdr_overflows = 0, expired = 0;
+    len_hi = 0, waits = 0, len_overflows = 0, hdr_overflows = 0, expired = 0;
 
 /* Hack, because we cannot have #ifdef in the macro definition SIGDISP */
 #define _UNDEFINED(SIG) ((#SIG)[0] == 0)
@@ -161,10 +161,10 @@ RDR_Stats(void)
 {
     LOG_Log(LOG_INFO, "Reader (%s): fd_max=%u seen=%u open=%u load=%.2f "
         "submitted=%u not_logged=%u occ_hi=%u waits=%u expired=%u free=%u "
-        "len_overflows=%u hdr_overflows=%u",
+        "len_hi=%u len_overflows=%u hdr_overflows=%u",
         waiting ? "waiting" : "running", config.max_fd, seen, open,
         100.0 * open / config.max_fd, submitted, not_logged, occ_hi, waits,
-        expired, rdr_free, len_overflows, hdr_overflows);
+        expired, rdr_free, len_hi, len_overflows, hdr_overflows);
 }
 
 static inline logline_t
@@ -317,7 +317,10 @@ collect(struct logline_t *lp, enum VSL_tag_e tag, unsigned spec,
 
     if (tag == SLT_VCL_Log && memchr(ptr, ':', len) == NULL)
         return;
-        
+
+    if (len > len_hi)
+        len_hi = len;
+    
     if (len > config.max_reclen) {
         LOG_Log(LOG_ALERT,
             "Data length %u exceeds max %u, DATA TRUNCATED: %s [%.*s]",