1 files changed, 95 insertions, 0 deletions
diff --git a/src/lib/dhcpsrv/cfg_hosts_util.cc b/src/lib/dhcpsrv/cfg_hosts_util.cc
new file mode 100644
index 0000000..8bb5aa0
--- /dev/null
+++ b/src/lib/dhcpsrv/cfg_hosts_util.cc
@@ -0,0 +1,95 @@
+// Copyright (C) 2017-2024 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <cc/data.h>
+#include <dhcpsrv/subnet_id.h>
+#include <dhcpsrv/cfg_hosts_util.h>
+#include <exceptions/exceptions.h>
+#include <boost/pointer_cast.hpp>
+
+using namespace isc::data;
+
+namespace isc {
+namespace dhcp {
+
+void CfgHostsList::internalize(ConstElementPtr list) {
+    if (!list) {
+        isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                  "argument is NULL");
+    }
+    if (list->getType() != Element::list) {
+        isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                  "argument is not a list Element");
+    }
+    for (size_t i = 0; i < list->size(); ++i) {
+        ConstElementPtr item = list->get(i);
+        if (!item) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "null pointer from the list at " << i);
+        }
+        if (item->getType() != Element::map) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "not a map from the list at " << i);
+        }
+        if (item->size() != 2) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "bad map size from the list at " << i);
+        }
+        ConstElementPtr id = item->get("id");
+        if (!id) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "no id from a map at " << i);
+        }
+        if (id->getType() != Element::integer) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "not integer id from a map at " <<i);
+        }
+        SubnetID subnet_id = static_cast<SubnetID>(id->intValue());
+        ConstElementPtr resvs = item->get("reservations");
+        if (!resvs) {
+            isc_throw(BadValue, "internal error: CfgHostsList::internalize: "
+                      "no reservations for subnet ID " << subnet_id);
+        }
+        map_.insert(std::make_pair(subnet_id, 
+                                   boost::const_pointer_cast<Element>(resvs)));
+    }
+}
+
+ElementPtr CfgHostsList::externalize() const {
+    ElementPtr result = Element::createList();
+    for (auto const& item : map_) {
+        ElementPtr pair = Element::createMap();
+        pair->set("id", Element::create(static_cast<int64_t>(item.first)));
+        pair->set("reservations", item.second);
+        result->add(pair);
+    }
+    return (result);
+}
+
+void CfgHostsList::add(SubnetID id, isc::data::ElementPtr resv) {
+    CfgHostsMap::iterator item = map_.find(id);
+    if (item != map_.end()) {
+        item->second->add(resv);
+    } else {
+        ElementPtr resvs = Element::createList();
+        resvs->add(resv);
+        map_.insert(std::make_pair(id, resvs));
+    }
+}
+
+ConstElementPtr CfgHostsList::get(SubnetID id) const {
+    CfgHostsMap::const_iterator item = map_.find(id);
+    if (item != map_.end()) {
+        return (item->second);
+    } else {
+        return (Element::createList());
+    }
+}
+
+}
+}