1 files changed, 141 insertions, 0 deletions
diff --git a/dnsdist-lua-bindings-rings.cc b/dnsdist-lua-bindings-rings.cc
new file mode 100644
index 0000000..4bf83a5
--- /dev/null
+++ b/dnsdist-lua-bindings-rings.cc
@@ -0,0 +1,141 @@
+/*
+ * This file is part of PowerDNS or dnsdist.
+ * Copyright -- PowerDNS.COM B.V. and its contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * In addition, for the avoidance of any doubt, permission is granted to
+ * link this program with OpenSSL and to (re)distribute the binaries
+ * produced as the result of such linking.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include "dnsdist.hh"
+#include "dnsdist-rings.hh"
+#include "dnsdist-lua.hh"
+
+#ifndef DISABLE_LUA_BINDINGS_RINGS
+struct LuaRingEntry
+{
+  DNSName qname;
+  ComboAddress requestor;
+  ComboAddress ds;
+  struct timespec when;
+  std::string macAddr;
+  struct dnsheader dh;
+  unsigned int usec;
+  unsigned int size;
+  uint16_t qtype;
+  dnsdist::Protocol protocol;
+  bool isResponse;
+};
+
+template <typename T>
+static void addRingEntryToList(LuaArray<LuaRingEntry>& list, const T& entry)
+{
+  constexpr bool response = std::is_same_v<T, Rings::Response>;
+  if constexpr (!response) {
+#if defined(DNSDIST_RINGS_WITH_MACADDRESS)
+    list.emplace_back(list.size() + 1, LuaRingEntry{entry.name, entry.requestor, ComboAddress(), entry.when, entry.hasmac ? std::string(reinterpret_cast<const char*>(entry.macaddress.data()), entry.macaddress.size()) : std::string(), entry.dh, 0U, entry.size, entry.qtype, entry.protocol, false});
+#else
+    list.emplace_back(list.size() + 1, LuaRingEntry{entry.name, entry.requestor, ComboAddress(), entry.when, std::string(), entry.dh, 0U, entry.size, entry.qtype, entry.protocol, false});
+#endif
+  }
+  else {
+    list.emplace_back(list.size() + 1, LuaRingEntry{entry.name, entry.requestor, entry.ds, entry.when, std::string(), entry.dh, entry.usec, entry.size, entry.qtype, entry.protocol, true});
+  }
+}
+
+#endif /* DISABLE_LUA_BINDINGS_RINGS */
+
+void setupLuaBindingsRings(LuaContext& luaCtx, bool client)
+{
+#ifndef DISABLE_LUA_BINDINGS_RINGS
+  luaCtx.writeFunction("getRingEntries", [client]() {
+    LuaArray<LuaRingEntry> results;
+
+    if (client) {
+      return results;
+    }
+
+    for (const auto& shard : g_rings.d_shards) {
+      {
+        auto ql = shard->queryRing.lock();
+        for (const auto& entry : *ql) {
+          addRingEntryToList(results, entry);
+        }
+      }
+      {
+        auto rl = shard->respRing.lock();
+        for (const auto& entry : *rl) {
+          addRingEntryToList(results, entry);
+        }
+      }
+    }
+
+    return results;
+  });
+
+  luaCtx.registerMember<DNSName(LuaRingEntry::*)>(std::string("qname"), [](const LuaRingEntry& entry) {
+    return entry.qname;
+  });
+
+  luaCtx.registerMember<ComboAddress(LuaRingEntry::*)>(std::string("requestor"), [](const LuaRingEntry& entry) {
+    return entry.requestor;
+  });
+
+  luaCtx.registerMember<ComboAddress(LuaRingEntry::*)>(std::string("backend"), [](const LuaRingEntry& entry) {
+    return entry.ds;
+  });
+
+  luaCtx.registerMember<timespec(LuaRingEntry::*)>(std::string("when"), [](const LuaRingEntry& entry) {
+    return entry.when;
+  });
+
+  luaCtx.registerMember<std::string(LuaRingEntry::*)>(std::string("macAddress"), [](const LuaRingEntry& entry) {
+    return entry.macAddr;
+  });
+
+  luaCtx.registerMember<dnsheader(LuaRingEntry::*)>(std::string("dnsheader"), [](const LuaRingEntry& entry) {
+    return entry.dh;
+  });
+
+  luaCtx.registerMember<unsigned int(LuaRingEntry::*)>(std::string("usec"), [](const LuaRingEntry& entry) {
+    return entry.usec;
+  });
+
+  luaCtx.registerMember<unsigned int(LuaRingEntry::*)>(std::string("size"), [](const LuaRingEntry& entry) {
+    return entry.size;
+  });
+
+  luaCtx.registerMember<uint16_t(LuaRingEntry::*)>(std::string("qtype"), [](const LuaRingEntry& entry) {
+    return entry.qtype;
+  });
+
+  luaCtx.registerMember<std::string(LuaRingEntry::*)>(std::string("protocol"), [](const LuaRingEntry& entry) {
+    return entry.protocol.toString();
+  });
+
+  luaCtx.registerMember<bool(LuaRingEntry::*)>(std::string("isResponse"), [](const LuaRingEntry& entry) {
+    return entry.isResponse;
+  });
+
+  luaCtx.registerMember<int64_t(timespec::*)>(std::string("tv_sec"), [](const timespec& ts) {
+    return ts.tv_sec;
+  });
+
+  luaCtx.registerMember<uint64_t(timespec::*)>(std::string("tv_nsec"), [](const timespec& ts) {
+    return ts.tv_nsec;
+  });
+
+#endif /* DISABLE_LUA_BINDINGS_RINGS */
+}