[4320] Added container holding allocated addresses in IA context.

src/bin/dhcp6/dhcp6_srv.cc

@@ -1493,7 +1493,7 @@ Dhcpv6Srv::assignIA_PD(const Pkt6Ptr& query, const Pkt6Ptr& answer,
 
             // We have a lease! Let's wrap its content into IA_PD option
             // with IAADDR suboption.
-            LOG_INFO(lease6_logger, ctx.fake_allocation ?
+            LOG_INFO(lease6_logger, ctx.fake_allocation_ ?
                       DHCP6_PD_LEASE_ADVERT : DHCP6_PD_LEASE_ALLOC)
                 .arg(query->getLabel())
                 .arg((*l)->addr_.toText())
@@ -1516,7 +1516,7 @@ Dhcpv6Srv::assignIA_PD(const Pkt6Ptr& query, const Pkt6Ptr& answer,
         // cause of that failure. The only thing left is to insert
         // status code to pass the sad news to the client.
 
-        LOG_DEBUG(lease6_logger, DBG_DHCP6_DETAIL, ctx.fake_allocation ?
+        LOG_DEBUG(lease6_logger, DBG_DHCP6_DETAIL, ctx.fake_allocation_ ?
                   DHCP6_PD_LEASE_ADVERT_FAIL : DHCP6_PD_LEASE_ALLOC_FAIL)
             .arg(query->getLabel())
             .arg(ia->getIAID());
@@ -1615,7 +1615,7 @@ Dhcpv6Srv::extendIA_NA(const Pkt6Ptr& query, const Pkt6Ptr& answer,
     // those prefixes and remove those that we have already processed. We
     // don't want to remove them from the context, so we need to copy them
     // into temporary container.
-    AllocEngine::HintContainer hints = ctx.currentIA().hints_;
+    AllocEngine::ResourceContainer hints = ctx.currentIA().hints_;
 
     // For all leases we have now, add the IAADDR with non-zero lifetimes.
     for (Lease6Collection::const_iterator l = leases.begin(); l != leases.end(); ++l) {
@@ -1628,7 +1628,7 @@ Dhcpv6Srv::extendIA_NA(const Pkt6Ptr& query, const Pkt6Ptr& answer,
             .arg(ia_rsp->getIAID());
 
         // Now remove this address from the hints list.
-        AllocEngine::HintType hint_type((*l)->addr_, 128);
+        AllocEngine::ResourceType hint_type((*l)->addr_, 128);
         hints.erase(std::remove(hints.begin(), hints.end(), hint_type),
                     hints.end());
     }
@@ -1641,7 +1641,7 @@ Dhcpv6Srv::extendIA_NA(const Pkt6Ptr& query, const Pkt6Ptr& answer,
         ia_rsp->addOption(iaaddr);
 
         // Now remove this address from the hints list.
-        AllocEngine::HintType hint_type((*l)->addr_, 128);
+        AllocEngine::ResourceType hint_type((*l)->addr_, 128);
         hints.erase(std::remove(hints.begin(), hints.end(), hint_type), hints.end());
 
         // If the new FQDN settings have changed for the lease, we need to
@@ -1662,7 +1662,7 @@ Dhcpv6Srv::extendIA_NA(const Pkt6Ptr& query, const Pkt6Ptr& answer,
 
     // Finally, if there are any addresses requested that we haven't dealt with
     // already, inform the client that he can't have them.
-    for (AllocEngine::HintContainer::const_iterator hint = hints.begin();
+    for (AllocEngine::ResourceContainer::const_iterator hint = hints.begin();
          hint != hints.end(); ++hint) {
         Option6IAAddrPtr iaaddr(new Option6IAAddr(D6O_IAADDR,
                                                   hint->first, 0, 0));
@@ -1775,7 +1775,7 @@ Dhcpv6Srv::extendIA_PD(const Pkt6Ptr& query,
     // those prefixes and remove those that we have already processed. We
     // don't want to remove them from the context, so we need to copy them
     // into temporary container.
-    AllocEngine::HintContainer hints = ctx.currentIA().hints_;
+    AllocEngine::ResourceContainer hints = ctx.currentIA().hints_;
 
     // For all the leases we have now, add the IAPPREFIX with non-zero lifetimes
     for (Lease6Collection::const_iterator l = leases.begin(); l != leases.end(); ++l) {
@@ -1790,7 +1790,7 @@ Dhcpv6Srv::extendIA_PD(const Pkt6Ptr& query,
             .arg(ia->getIAID());
 
         // Now remove this address from the hints list.
-        AllocEngine::HintType hint_type((*l)->addr_, (*l)->prefixlen_);
+        AllocEngine::ResourceType hint_type((*l)->addr_, (*l)->prefixlen_);
         hints.erase(std::remove(hints.begin(), hints.end(), hint_type),
                     hints.end());
     }
@@ -1802,7 +1802,7 @@ Dhcpv6Srv::extendIA_PD(const Pkt6Ptr& query,
     // zero lifetimes
     // Finally, if there are any addresses requested that we haven't dealt with
     // already, inform the client that he can't have them.
-    for (AllocEngine::HintContainer::const_iterator prefix = hints.begin();
+    for (AllocEngine::ResourceContainer::const_iterator prefix = hints.begin();
          prefix != hints.end(); ++prefix) {
         // Send the prefix with the zero lifetimes only if the prefix
         // contains non-zero value. A zero value indicates that the hint was

src/lib/dhcpsrv/alloc_engine.cc

@@ -358,8 +358,8 @@ AllocEngine::ClientContext6::ClientContext6(const Subnet6Ptr& subnet,
 }
 
 AllocEngine::ClientContext6::IAContext::IAContext()
-    : iaid_(0), type_(Lease::TYPE_NA), hints_(), old_leases_(),
-      changed_leases_(), ia_rsp_() {
+    : iaid_(0), type_(Lease::TYPE_NA), hints_(), allocated_resources_(),
+      old_leases_(), changed_leases_(), ia_rsp_() {
 }
 
 void
@@ -369,6 +369,14 @@ IAContext::addHint(const asiolink::IOAddress& prefix,
     hints_.push_back(std::make_pair(prefix, prefix_len));
 }
 
+void
+AllocEngine::ClientContext6::
+IAContext::addAllocatedResource(const asiolink::IOAddress& prefix,
+                                const uint8_t prefix_len) {
+    allocated_resources_.push_back(std::make_pair(prefix, prefix_len));
+}
+
+
 void AllocEngine::findReservation(ClientContext6& ctx) {
     findReservationInternal(ctx, boost::bind(&HostMgr::get6,
                                              &HostMgr::instance(),

src/lib/dhcpsrv/alloc_engine.h

@@ -248,10 +248,10 @@ public:
     /// This is an entry that represents what the client had requested,
     /// either an address or a prefix. Prefix length is 128 for regular
     /// addresses.
-    typedef std::pair<isc::asiolink::IOAddress, uint8_t> HintType;
+    typedef std::pair<isc::asiolink::IOAddress, uint8_t> ResourceType;
 
     /// @brief Container for client's hints.
-    typedef std::vector<HintType> HintContainer;
+    typedef std::vector<ResourceType> ResourceContainer;
 
     /// @brief A tuple holding host identifier type and value.
     typedef std::pair<Host::IdentifierType, std::vector<uint8_t> > IdentifierPair;
@@ -351,7 +351,10 @@ public:
             ///
             /// There will typically be just one address, but the protocol
             /// allows more than one address or prefix for each IA container.
-            HintContainer hints_;
+            ResourceContainer hints_;
+
+            /// @brief Holds addresses or prefixes allocated for this IA.
+            ResourceContainer allocated_resources_;
 
             /// @brief A pointer to any old leases that the client had before
             /// update but are no longer valid after the update/allocation.
@@ -386,6 +389,13 @@ public:
             void addHint(const asiolink::IOAddress& prefix,
                          const uint8_t prefix_len = 128);
 
+            /// @brief Convenience method adding allocated prefix or address.
+            ///
+            /// @param prefix Prefix or address.
+            /// @param prefix_len Prefix length. Default is 128 for addresses.
+            void addAllocatedResource(const asiolink::IOAddress& prefix,
+                                      const uint8_t prefix_len = 128);
+
         };
 
         /// @brief Container holding IA specific contexts.

src/lib/dhcpsrv/tests/alloc_engine6_unittest.cc

@@ -1,4 +1,4 @@
-// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2015-2016 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
@@ -20,6 +20,29 @@ namespace isc {
 namespace dhcp {
 namespace test {
 
+// Test convenience method adding hints to IA context.
+TEST(ClientContext6Test, addHint) {
+   AllocEngine::ClientContext6 ctx;
+   ctx.currentIA().addHint(IOAddress("2001:db8:1::1"));
+   ctx.currentIA().addHint(IOAddress("3000:1::"), 64);
+
+   ASSERT_EQ(2, ctx.currentIA().hints_.size());
+   EXPECT_EQ("2001:db8:1::1", ctx.currentIA().hints_[0].first.toText());
+   EXPECT_EQ("3000:1::", ctx.currentIA().hints_[1].first.toText());
+}
+
+// Test convenience method adding allocated prefixes and addresses to
+// IA context.
+TEST(ClientContext6Test, addAllocatedResource) {
+   AllocEngine::ClientContext6 ctx;
+   ctx.currentIA().addAllocatedResource(IOAddress("2001:db8:1::1"));
+   ctx.currentIA().addAllocatedResource(IOAddress("3000:1::"), 64);
+
+   ASSERT_EQ(2, ctx.currentIA().allocated_resources_.size());
+   EXPECT_EQ("2001:db8:1::1", ctx.currentIA().allocated_resources_[0].first.toText());
+   EXPECT_EQ("3000:1::", ctx.currentIA().allocated_resources_[1].first.toText());
+}
+
 // This test checks if the v6 Allocation Engine can be instantiated, parses
 // parameters string and allocators are created.
 TEST_F(AllocEngine6Test, constructor) {
@@ -667,7 +690,7 @@ TEST_F(AllocEngine6Test, renewExtendLeaseLifetime) {
     AllocEngine engine(AllocEngine::ALLOC_ITERATIVE, 100);
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(IOAddress("2001:db8:1::15"), 128));
 
     // Client should receive a lease.
@@ -700,7 +723,7 @@ TEST_F(AllocEngine6Test, renewExtendLeaseLifetimeForReservation) {
     AllocEngine engine(AllocEngine::ALLOC_ITERATIVE, 100);
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(IOAddress("2001:db8:1::15"), 128));
 
     // Client should receive a lease.
@@ -1250,7 +1273,7 @@ TEST_F(AllocEngine6Test, addressRenewal) {
     ASSERT_EQ(1, leases.size());
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(leases[0]->addr_, 128));
 
     Lease6Collection renewed = renewTest(engine, pool_, hints, true);
@@ -1281,7 +1304,7 @@ TEST_F(AllocEngine6Test, reservedAddressRenewal) {
     ASSERT_EQ("2001:db8:1::1c", leases[0]->addr_.toText());
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(leases[0]->addr_, 128));
 
     Lease6Collection renewed = renewTest(engine, pool_, hints, true);
@@ -1417,7 +1440,7 @@ TEST_F(AllocEngine6Test, reservedAddressRenewChange) {
     ASSERT_NE("2001:db8:1::1c", leases[0]->addr_.toText());
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(leases[0]->addr_, 128));
 
     // Create reservation for the client. This is in-pool reservation,
@@ -1441,7 +1464,7 @@ TEST_F(AllocEngine6Test, reservedAddressRenewReserved) {
     ASSERT_EQ(1, leases.size());
 
     // This is what the client will send in his renew message.
-    AllocEngine::HintContainer hints;
+    AllocEngine::ResourceContainer hints;
     hints.push_back(make_pair(leases[0]->addr_, 128));
 
     // Create reservation for this address, but for another client.

src/lib/dhcpsrv/tests/alloc_engine_utils.cc

@@ -316,7 +316,7 @@ AllocEngine6Test::simpleAlloc6Test(const Pool6Ptr& pool, const IOAddress& hint,
 
 Lease6Collection
 AllocEngine6Test::renewTest(AllocEngine& engine, const Pool6Ptr& pool,
-                            AllocEngine::HintContainer& hints,
+                            AllocEngine::ResourceContainer& hints,
                             bool in_pool) {
 
     Lease::Type type = pool->getType();

src/lib/dhcpsrv/tests/alloc_engine_utils.h

@@ -1,4 +1,4 @@
-// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2015-2016 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
@@ -260,7 +260,7 @@ public:
     /// @param in_pool specifies whether the lease is expected to be in pool
     /// @return allocated lease(s) (may be empty)
     Lease6Collection renewTest(AllocEngine& engine, const Pool6Ptr& pool,
-                               AllocEngine::HintContainer& hints,
+                               AllocEngine::ResourceContainer& hints,
                                bool in_pool = true);
 
     /// @brief Checks if the address allocation with a hint that is in range,