TT#182200 extra debugging output

This makes it possible to trace which CDR record was created from which
acc records and at which point.

Change-Id: I3645ccf244bf7d86b6f70181c57e47dfa204f7b9
(cherry picked from commit 64d50ee701)

medmysql.c

@@ -970,6 +970,8 @@ int medmysql_insert_cdrs(cdr_entry_t *entries, uint64_t count, struct medmysql_b
         snprintf(str_source_accid, sizeof(str_source_accid), "%llu", (long long unsigned int) e->source_account_id);
         snprintf(str_dest_accid, sizeof(str_dest_accid), "%llu", (long long unsigned int) e->destination_account_id);
 
+	const char *begin_ptr = batch->cdrs.str + batch->cdrs.len;
+
         CDRPRINT("(NULL, now(), ");
         CDRESCAPE(e->source_user_id);
         CDRPRINT(",");
@@ -1105,6 +1107,9 @@ int medmysql_insert_cdrs(cdr_entry_t *entries, uint64_t count, struct medmysql_b
 
         CDRPRINT("),");
 
+	const char *end_ptr = batch->cdrs.str + batch->cdrs.len;
+	L_DEBUG("CDR entry to be written: %.*s", (int) (end_ptr - begin_ptr), begin_ptr);
+
         if (medmysql_tag_cdr(batch, medmysql_tag_provider_customer, medmysql_tag_direction_destination,
                     "furnished_charging_info", e->furnished_charging_info, e))
             return -1;