[svn] commit: r562 - in /branches/parkinglot/src/bin/parkinglot: Makefile.am builtin.cc builtin.h parkinglot.cc

[BIND 10 source code commits]

Author: jinmei
Date: Wed Jan 27 09:15:19 2010
New Revision: 562

Log:
added an experimental implementation of "optimized built-in answers".
this version records pre-rendered authors/version.bind answers and reuses
them to build responses very efficiently.
This implementation intends to show how we can customize the RRset class
by inheritance from the base abstract class to optimize response generation.

Added:
    branches/parkinglot/src/bin/parkinglot/builtin.cc
    branches/parkinglot/src/bin/parkinglot/builtin.h
Modified:
    branches/parkinglot/src/bin/parkinglot/Makefile.am
    branches/parkinglot/src/bin/parkinglot/parkinglot.cc

Modified: branches/parkinglot/src/bin/parkinglot/Makefile.am
==============================================================================
--- branches/parkinglot/src/bin/parkinglot/Makefile.am (original)
+++ branches/parkinglot/src/bin/parkinglot/Makefile.am Wed Jan 27 09:15:19 2010
@@ -5,6 +5,7 @@
 parkinglot_SOURCES += parkinglot.h main.cc
 parkinglot_SOURCES += data_source_plot.h data_source_plot.cc
 parkinglot_SOURCES += data_source.h data_source.cc
+parkinglot_SOURCES += builtin.h builtin.cc
 parkinglot_LDADD =  $(top_srcdir)/src/lib/dns/cpp/.libs/libdns.a
 parkinglot_LDADD += $(top_srcdir)/src/lib/config/cpp/libclient.a
 parkinglot_LDADD += $(top_srcdir)/src/lib/cc/cpp/libcc.a

Modified: branches/parkinglot/src/bin/parkinglot/parkinglot.cc
==============================================================================
--- branches/parkinglot/src/bin/parkinglot/parkinglot.cc (original)
+++ branches/parkinglot/src/bin/parkinglot/parkinglot.cc Wed Jan 27 09:15:19 2010
@@ -36,6 +36,7 @@
 #include <cc/cpp/data.h>
 
 #include "common.h"
+#include "builtin.h"
 #include "parkinglot.h"
 
 #include <boost/lexical_cast.hpp>
@@ -106,6 +107,11 @@
 };
 }
 
+namespace {
+const Name authors_name("authors.bind");
+const Name version_name("version.bind");
+}
+
 void
 ParkingLot::processMessage() {
     struct sockaddr_storage ss;
@@ -146,7 +152,17 @@
         SearchResult::status_type status;
         bool included_ns = false;
         msg.setRcode(Rcode::NOERROR());
-        if (data_source.hasZoneFor(query->getName(), zname)) {
+        if (qtype == RRType::TXT() && qclass == RRClass::CH() &&
+            name == authors_name) {
+            msg.addRRset(Section::ANSWER(), getBuiltinAuthors().getAnswer());
+            msg.addRRset(Section::AUTHORITY(),
+                         getBuiltinAuthors().getAuthority());
+        } else if (qtype == RRType::TXT() && qclass == RRClass::CH() &&
+            name == version_name) {
+            msg.addRRset(Section::ANSWER(), getBuiltinVersion().getAnswer());
+            msg.addRRset(Section::AUTHORITY(),
+                         getBuiltinVersion().getAuthority());
+        } else if (data_source.hasZoneFor(query->getName(), zname)) {
             status = data_source.addToMessage(msg, Section::ANSWER(), zname,
                                               name, qclass, qtype);
             // rcode is based on this result?