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Diffstat (limited to 'src/lib/dhcpsrv/tests/cfgmgr_unittest.cc')
| -rw-r--r-- | src/lib/dhcpsrv/tests/cfgmgr_unittest.cc | 1066 |
1 files changed, 1066 insertions, 0 deletions
diff --git a/src/lib/dhcpsrv/tests/cfgmgr_unittest.cc b/src/lib/dhcpsrv/tests/cfgmgr_unittest.cc new file mode 100644 index 0000000..d1b5413 --- /dev/null +++ b/src/lib/dhcpsrv/tests/cfgmgr_unittest.cc @@ -0,0 +1,1066 @@ +// Copyright (C) 2012-2022 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 <exceptions/exceptions.h> +#include <dhcp/dhcp6.h> +#include <dhcp/tests/iface_mgr_test_config.h> +#include <dhcpsrv/cfgmgr.h> +#include <dhcpsrv/lease_mgr_factory.h> +#include <dhcpsrv/subnet_id.h> +#include <dhcpsrv/parsers/dhcp_parsers.h> +#include <process/logging_info.h> +#include <stats/stats_mgr.h> +#include <util/chrono_time_utils.h> + +#include <boost/scoped_ptr.hpp> + +#include <gtest/gtest.h> + +#include <iostream> +#include <sstream> + +#include <arpa/inet.h> + +using namespace std; +using namespace isc::asiolink; +using namespace isc::data; +using namespace isc::dhcp; +using namespace isc::dhcp::test; +using namespace isc::util; +using namespace isc::stats; +using namespace isc::process; +using namespace isc; + +// don't import the entire boost namespace. It will unexpectedly hide uint8_t +// for some systems. +using boost::scoped_ptr; + +namespace { + +template <typename Storage> +bool isZeroPosition(const Storage& storage, const std::string& param_name) { + Element::Position position = storage.getPosition(param_name); + return ((position.line_ == 0) && (position.pos_ == 0) && + (position.file_.empty())); +} + +// This test verifies that BooleanStorage functions properly. +TEST(ValueStorageTest, BooleanTesting) { + BooleanStorage testStore; + + // Verify that we can add and retrieve parameters. + testStore.setParam("firstBool", false, Element::Position("kea.conf", 123, 234)); + testStore.setParam("secondBool", true, Element::Position("keax.conf", 10, 20)); + + EXPECT_FALSE(testStore.getParam("firstBool")); + EXPECT_TRUE(testStore.getParam("secondBool")); + + EXPECT_EQ(123, testStore.getPosition("firstBool").line_); + EXPECT_EQ(234, testStore.getPosition("firstBool").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("firstBool").file_); + + EXPECT_EQ(10, testStore.getPosition("secondBool").line_); + EXPECT_EQ(20, testStore.getPosition("secondBool").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("secondBool").file_); + + // Verify that we can update parameters. + testStore.setParam("firstBool", true, Element::Position("keax.conf", 555, 111)); + testStore.setParam("secondBool", false, Element::Position("kea.conf", 1, 3)); + + EXPECT_TRUE(testStore.getParam("firstBool")); + EXPECT_FALSE(testStore.getParam("secondBool")); + + EXPECT_EQ(555, testStore.getPosition("firstBool").line_); + EXPECT_EQ(111, testStore.getPosition("firstBool").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("firstBool").file_); + + EXPECT_EQ(1, testStore.getPosition("secondBool").line_); + EXPECT_EQ(3, testStore.getPosition("secondBool").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("secondBool").file_); + + // Verify that we can delete a parameter and it will no longer be found. + testStore.delParam("firstBool"); + EXPECT_THROW(testStore.getParam("firstBool"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "firstBool")); + + // Verify that the delete was safe and the store still operates. + EXPECT_FALSE(testStore.getParam("secondBool")); + + EXPECT_EQ(1, testStore.getPosition("secondBool").line_); + EXPECT_EQ(3, testStore.getPosition("secondBool").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("secondBool").file_); + + // Verify that looking for a parameter that never existed throws. + ASSERT_THROW(testStore.getParam("bogusBool"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "bogusBool")); + + // Verify that attempting to delete a parameter that never existed does not throw. + EXPECT_NO_THROW(testStore.delParam("bogusBool")); + + // Verify that we can empty the list. + testStore.clear(); + EXPECT_THROW(testStore.getParam("secondBool"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "secondBool")); +} + +// This test verifies that Uint32Storage functions properly. +TEST(ValueStorageTest, Uint32Testing) { + Uint32Storage testStore; + + uint32_t int_one = 77; + uint32_t int_two = 33; + + // Verify that we can add and retrieve parameters. + testStore.setParam("firstInt", int_one, Element::Position("kea.conf", 123, 234)); + testStore.setParam("secondInt", int_two, Element::Position("keax.conf", 10, 20)); + + EXPECT_EQ(testStore.getParam("firstInt"), int_one); + EXPECT_EQ(testStore.getParam("secondInt"), int_two); + + EXPECT_EQ(123, testStore.getPosition("firstInt").line_); + EXPECT_EQ(234, testStore.getPosition("firstInt").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("firstInt").file_); + + EXPECT_EQ(10, testStore.getPosition("secondInt").line_); + EXPECT_EQ(20, testStore.getPosition("secondInt").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("secondInt").file_); + + // Verify that we can update parameters. + testStore.setParam("firstInt", --int_one, Element::Position("keax.conf", 555, 111)); + testStore.setParam("secondInt", ++int_two, Element::Position("kea.conf", 1, 3)); + + EXPECT_EQ(testStore.getParam("firstInt"), int_one); + EXPECT_EQ(testStore.getParam("secondInt"), int_two); + + EXPECT_EQ(555, testStore.getPosition("firstInt").line_); + EXPECT_EQ(111, testStore.getPosition("firstInt").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("firstInt").file_); + + EXPECT_EQ(1, testStore.getPosition("secondInt").line_); + EXPECT_EQ(3, testStore.getPosition("secondInt").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("secondInt").file_); + + // Verify that we can delete a parameter and it will no longer be found. + testStore.delParam("firstInt"); + EXPECT_THROW(testStore.getParam("firstInt"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "firstInt")); + + // Verify that the delete was safe and the store still operates. + EXPECT_EQ(testStore.getParam("secondInt"), int_two); + + EXPECT_EQ(1, testStore.getPosition("secondInt").line_); + EXPECT_EQ(3, testStore.getPosition("secondInt").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("secondInt").file_); + + // Verify that looking for a parameter that never existed throws. + ASSERT_THROW(testStore.getParam("bogusInt"), isc::dhcp::DhcpConfigError); + + // Verify that attempting to delete a parameter that never existed does not throw. + EXPECT_NO_THROW(testStore.delParam("bogusInt")); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "bogusInt")); + + // Verify that we can empty the list. + testStore.clear(); + EXPECT_THROW(testStore.getParam("secondInt"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "secondInt")); +} + +// This test verifies that StringStorage functions properly. +TEST(ValueStorageTest, StringTesting) { + StringStorage testStore; + + std::string string_one = "seventy-seven"; + std::string string_two = "thirty-three"; + + // Verify that we can add and retrieve parameters. + testStore.setParam("firstString", string_one, + Element::Position("kea.conf", 123, 234)); + testStore.setParam("secondString", string_two, + Element::Position("keax.conf", 10, 20)); + + EXPECT_EQ(testStore.getParam("firstString"), string_one); + EXPECT_EQ(testStore.getParam("secondString"), string_two); + + EXPECT_EQ(123, testStore.getPosition("firstString").line_); + EXPECT_EQ(234, testStore.getPosition("firstString").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("firstString").file_); + + EXPECT_EQ(10, testStore.getPosition("secondString").line_); + EXPECT_EQ(20, testStore.getPosition("secondString").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("secondString").file_); + + // Verify that we can update parameters. + string_one.append("-boo"); + string_two.append("-boo"); + + testStore.setParam("firstString", string_one, + Element::Position("kea.conf", 555, 111)); + testStore.setParam("secondString", string_two, + Element::Position("keax.conf", 1, 3)); + + EXPECT_EQ(testStore.getParam("firstString"), string_one); + EXPECT_EQ(testStore.getParam("secondString"), string_two); + + EXPECT_EQ(555, testStore.getPosition("firstString").line_); + EXPECT_EQ(111, testStore.getPosition("firstString").pos_); + EXPECT_EQ("kea.conf", testStore.getPosition("firstString").file_); + + EXPECT_EQ(1, testStore.getPosition("secondString").line_); + EXPECT_EQ(3, testStore.getPosition("secondString").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("secondString").file_); + + // Verify that we can delete a parameter and it will no longer be found. + testStore.delParam("firstString"); + EXPECT_THROW(testStore.getParam("firstString"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "firstString")); + + // Verify that the delete was safe and the store still operates. + EXPECT_EQ(testStore.getParam("secondString"), string_two); + + EXPECT_EQ(1, testStore.getPosition("secondString").line_); + EXPECT_EQ(3, testStore.getPosition("secondString").pos_); + EXPECT_EQ("keax.conf", testStore.getPosition("secondString").file_); + + // Verify that looking for a parameter that never existed throws. + ASSERT_THROW(testStore.getParam("bogusString"), isc::dhcp::DhcpConfigError); + + // Verify that attempting to delete a parameter that never existed does not throw. + EXPECT_NO_THROW(testStore.delParam("bogusString")); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "bogusString")); + + // Verify that we can empty the list. + testStore.clear(); + EXPECT_THROW(testStore.getParam("secondString"), isc::dhcp::DhcpConfigError); + + // Verify that the "zero" position is returned when parameter doesn't exist. + EXPECT_TRUE(isZeroPosition(testStore, "secondString")); +} + + + +class CfgMgrTest : public ::testing::Test { +public: + CfgMgrTest() { + // make sure we start with a clean configuration + original_datadir_ = CfgMgr::instance().getDataDir(); + clear(); + } + + /// @brief generates interface-id option based on provided text + /// + /// @param text content of the option to be created + /// + /// @return pointer to the option object created + OptionPtr generateInterfaceId(const string& text) { + OptionBuffer buffer(text.begin(), text.end()); + return OptionPtr(new Option(Option::V6, D6O_INTERFACE_ID, buffer)); + } + + ~CfgMgrTest() { + // clean up after the test + clear(); + } + + void clear() { + CfgMgr::instance().setFamily(AF_INET); + CfgMgr::instance().setDataDir(original_datadir_); + CfgMgr::instance().clear(); + LeaseMgrFactory::destroy(); + } + + /// @brief Creates instance of the backend. + /// + /// @param family AF_INET for v4, AF_INET6 for v6 + void startBackend(int family = AF_INET) { + try { + std::ostringstream s; + s << "type=memfile persist=false " << (family == AF_INET6 ? + "universe=6" : "universe=4"); + LeaseMgrFactory::create(s.str()); + } catch (const std::exception& ex) { + std::cerr << "*** ERROR: unable to create instance of the Memfile" + " lease database backend: " << ex.what() << std::endl; + throw; + } + } + + /// used in client classification (or just empty container for other tests) + isc::dhcp::ClientClasses classify_; + +private: + /// to restore it in destructor. + string original_datadir_; +}; + +// Checks that there is a configuration structure available and that +// it is empty by default. +TEST_F(CfgMgrTest, configuration) { + + ConstSrvConfigPtr configuration = CfgMgr::instance().getCurrentCfg(); + ASSERT_TRUE(configuration); + EXPECT_TRUE(configuration->getLoggingInfo().empty()); + + configuration = CfgMgr::instance().getStagingCfg(); + ASSERT_TRUE(configuration); + EXPECT_TRUE(configuration->getLoggingInfo().empty()); +} + +// This test checks the data directory handling. +TEST_F(CfgMgrTest, dataDir) { + // It is only in DHCPv6 syntax so switch to IPv6. + CfgMgr::instance().setFamily(AF_INET6); + + // Default. + EXPECT_TRUE(CfgMgr::instance().getDataDir().unspecified()); + ConstElementPtr json = CfgMgr::instance().getCurrentCfg()->toElement(); + ASSERT_TRUE(json); + ASSERT_EQ(Element::map, json->getType()); + ConstElementPtr dhcp = json->get("Dhcp6"); + ASSERT_TRUE(dhcp); + ASSERT_EQ(Element::map, dhcp->getType()); + ConstElementPtr datadir = dhcp->get("data-directory"); + EXPECT_FALSE(datadir); + + // Set but not specified. + CfgMgr::instance().setDataDir("/tmp"); + EXPECT_TRUE(CfgMgr::instance().getDataDir().unspecified()); + EXPECT_EQ("/tmp", string(CfgMgr::instance().getDataDir())); + json = CfgMgr::instance().getCurrentCfg()->toElement(); + ASSERT_TRUE(json); + ASSERT_EQ(Element::map, json->getType()); + dhcp = json->get("Dhcp6"); + ASSERT_TRUE(dhcp); + ASSERT_EQ(Element::map, dhcp->getType()); + datadir = dhcp->get("data-directory"); + EXPECT_FALSE(datadir); + + // Set and specified. + CfgMgr::instance().setDataDir("/tmp", false); + EXPECT_FALSE(CfgMgr::instance().getDataDir().unspecified()); + EXPECT_EQ("/tmp", string(CfgMgr::instance().getDataDir())); + json = CfgMgr::instance().getCurrentCfg()->toElement(); + ASSERT_TRUE(json); + ASSERT_EQ(Element::map, json->getType()); + dhcp = json->get("Dhcp6"); + ASSERT_TRUE(dhcp); + ASSERT_EQ(Element::map, dhcp->getType()); + datadir = dhcp->get("data-directory"); + ASSERT_TRUE(datadir); + ASSERT_EQ(Element::string, datadir->getType()); + EXPECT_EQ("/tmp", datadir->stringValue()); + + // Still IPv6 only. + CfgMgr::instance().setFamily(AF_INET); + EXPECT_FALSE(CfgMgr::instance().getDataDir().unspecified()); + EXPECT_EQ("/tmp", string(CfgMgr::instance().getDataDir())); + json = CfgMgr::instance().getCurrentCfg()->toElement(); + ASSERT_TRUE(json); + ASSERT_EQ(Element::map, json->getType()); + dhcp = json->get("Dhcp4"); + ASSERT_TRUE(dhcp); + ASSERT_EQ(Element::map, dhcp->getType()); + datadir = dhcp->get("data-directory"); + EXPECT_FALSE(datadir); +} + +// This test checks the D2ClientMgr wrapper methods. +TEST_F(CfgMgrTest, d2ClientConfig) { + // After CfgMgr construction, D2ClientMgr member should be initialized + // with a D2 configuration that is disabled. + // Verify we can Fetch the mgr. + D2ClientMgr& d2_mgr = CfgMgr::instance().getD2ClientMgr(); + EXPECT_FALSE(d2_mgr.ddnsEnabled()); + + // Make sure the convenience method fetches the config correctly. + D2ClientConfigPtr original_config = CfgMgr::instance().getD2ClientConfig(); + ASSERT_TRUE(original_config); + EXPECT_FALSE(original_config->getEnableUpdates()); + + // Verify that we cannot set the configuration to an empty pointer. + D2ClientConfigPtr new_cfg; + ASSERT_THROW(CfgMgr::instance().setD2ClientConfig(new_cfg), D2ClientError); + + // Create a new, enabled configuration. + ASSERT_NO_THROW(new_cfg.reset(new D2ClientConfig(true, + isc::asiolink::IOAddress("127.0.0.1"), 477, + isc::asiolink::IOAddress("127.0.0.1"), 478, + 1024, + dhcp_ddns::NCR_UDP, dhcp_ddns::FMT_JSON))); + + // Verify that we can assign a new, non-empty configuration. + ASSERT_NO_THROW(CfgMgr::instance().setD2ClientConfig(new_cfg)); + + // Verify that we can fetch the newly assigned configuration. + D2ClientConfigPtr updated_config = CfgMgr::instance().getD2ClientConfig(); + ASSERT_TRUE(updated_config); + EXPECT_TRUE(updated_config->getEnableUpdates()); + + // Make sure convenience method agrees with updated configuration. + EXPECT_TRUE(CfgMgr::instance().ddnsEnabled()); + + // Make sure the configuration we fetched is the one we assigned, + // and not the original configuration. + EXPECT_EQ(*new_cfg, *updated_config); + EXPECT_NE(*original_config, *updated_config); + + // Revert to default configuration. + ASSERT_NO_THROW(CfgMgr::instance().setD2ClientConfig(original_config)); +} + +// This test verifies that the configuration staging, commit and rollback works +// as expected. +TEST_F(CfgMgrTest, staging) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + // Initially, the current configuration is a default one. We are going + // to get the current configuration a couple of times and make sure + // that always the same instance is returned. + ConstSrvConfigPtr const_config; + for (int i = 0; i < 5; ++i) { + const_config = cfg_mgr.getCurrentCfg(); + ASSERT_TRUE(const_config) << "Returned NULL current configuration" + " for iteration " << i; + EXPECT_EQ(0, const_config->getSequence()) + << "Returned invalid sequence number " + << const_config->getSequence() << " for iteration " << i; + } + + // Try to get the new staging configuration. When getStagingCfg() is called + // for the first time the new instance of the staging configuration is + // returned. This instance is returned for every call to getStagingCfg() + // until commit is called. + SrvConfigPtr config; + for (int i = 0; i < 5; ++i) { + config = cfg_mgr.getStagingCfg(); + ASSERT_TRUE(config) << "Returned NULL staging configuration for" + " iteration " << i; + // The sequence id is 1 for staging because it is ahead of current + // configuration having sequence number 0. + EXPECT_EQ(1, config->getSequence()) << "Returned invalid sequence" + " number " << config->getSequence() << " for iteration " << i; + } + + // This should change the staging configuration so as it becomes a current + // one. + auto before = boost::posix_time::second_clock::universal_time(); + cfg_mgr.commit(); + auto after = boost::posix_time::second_clock::universal_time(); + const_config = cfg_mgr.getCurrentCfg(); + ASSERT_TRUE(const_config); + // Sequence id equal to 1 indicates that the current configuration points + // to the configuration that used to be a staging configuration previously. + EXPECT_EQ(1, const_config->getSequence()); + // Last commit timestamp should be between before and after. + auto reload = const_config->getLastCommitTime(); + ASSERT_FALSE(reload.is_not_a_date_time()); + EXPECT_LE(before, reload); + EXPECT_GE(after, reload); + + // Create a new staging configuration. It should be assigned a new + // sequence id. + config = cfg_mgr.getStagingCfg(); + ASSERT_TRUE(config); + EXPECT_EQ(2, config->getSequence()); + + // Let's execute commit a couple of times. The first invocation to commit + // changes the configuration having sequence 2 to current configuration. + // Other commits are no-op. + for (int i = 0; i < 5; ++i) { + cfg_mgr.commit(); + } + + // The current configuration now have sequence number 2. + const_config = cfg_mgr.getCurrentCfg(); + ASSERT_TRUE(const_config); + EXPECT_EQ(2, const_config->getSequence()); + + // Clear configuration along with a history. + cfg_mgr.clear(); + + // After clearing configuration we should successfully get the + // new staging configuration. + config = cfg_mgr.getStagingCfg(); + ASSERT_TRUE(config); + EXPECT_EQ(1, config->getSequence()); + + // Modify the staging configuration. + config->addLoggingInfo(LoggingInfo()); + ASSERT_TRUE(config); + // The modified staging configuration should have one logger configured. + ASSERT_EQ(1, config->getLoggingInfo().size()); + + // Rollback should remove a staging configuration, including the logger. + ASSERT_NO_THROW(cfg_mgr.rollback()); + + // Make sure that the logger is not set. This is an indication that the + // rollback worked. + config = cfg_mgr.getStagingCfg(); + ASSERT_TRUE(config); + EXPECT_EQ(0, config->getLoggingInfo().size()); +} + +// This test verifies that it is possible to revert to an old configuration. +TEST_F(CfgMgrTest, revert) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + // Let's create 5 unique configurations: differing by a debug level in the + // range of 10 to 14. + for (int i = 0; i < 5; ++i) { + SrvConfigPtr config = cfg_mgr.getStagingCfg(); + LoggingInfo logging_info; + logging_info.debuglevel_ = i + 10; + config->addLoggingInfo(logging_info); + cfg_mgr.commit(); + } + + // Now we have 6 configurations with: + // - debuglevel = 99 (a default one) + // - debuglevel = 10 + // - debuglevel = 11 + // - debuglevel = 12 + // - debuglevel = 13 + // - debuglevel = 14 (current) + + // Hence, the maximum index of the configuration to revert is 5 (which + // points to the configuration with debuglevel = 99). For the index greater + // than 5 we should get an exception. + ASSERT_THROW(cfg_mgr.revert(6), isc::OutOfRange); + // Value of 0 also doesn't make sense. + ASSERT_THROW(cfg_mgr.revert(0), isc::OutOfRange); + + // We should be able to revert to configuration with debuglevel = 10. + ASSERT_NO_THROW(cfg_mgr.revert(4)); + // And this configuration should be now the current one and the debuglevel + // of this configuration is 10. + EXPECT_EQ(10, cfg_mgr.getCurrentCfg()->getLoggingInfo()[0].debuglevel_); + EXPECT_NE(cfg_mgr.getCurrentCfg()->getSequence(), 1); + + // The new set of configuration is now as follows: + // - debuglevel = 99 + // - debuglevel = 10 + // - debuglevel = 11 + // - debuglevel = 12 + // - debuglevel = 13 + // - debuglevel = 14 + // - debuglevel = 10 (current) + // So, reverting to configuration having index 3 means that the debug level + // of the current configuration will become 12. + ASSERT_NO_THROW(cfg_mgr.revert(3)); + EXPECT_EQ(12, cfg_mgr.getCurrentCfg()->getLoggingInfo()[0].debuglevel_); +} + +// This test verifies that the address family can be set and obtained +// from the configuration manager. +TEST_F(CfgMgrTest, family) { + ASSERT_EQ(AF_INET, CfgMgr::instance().getFamily()); + + CfgMgr::instance().setFamily(AF_INET6); + ASSERT_EQ(AF_INET6, CfgMgr::instance().getFamily()); + + CfgMgr::instance().setFamily(AF_INET); + EXPECT_EQ(AF_INET, CfgMgr::instance().getFamily()); +} + +// This test verifies that once the configuration is committed, statistics +// are updated appropriately. +TEST_F(CfgMgrTest, commitStats4) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + startBackend(AF_INET); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet4Ptr subnet1(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 123)); + CfgSubnets4Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets4(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-addresses", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-addresses", static_cast<int64_t>(150)); + + // Now, let's change the configuration to something new. + + // There's a subnet 192.1.2.0/24 with ID=42 + Subnet4Ptr subnet2(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 42)); + + // Let's make a pool with 128 addresses available. + PoolPtr pool(new Pool4(IOAddress("192.1.2.0"), 25)); // 128 addrs + subnet2->addPool(pool); + + subnets = cfg_mgr.getStagingCfg()->getCfgSubnets4(); + subnets->add(subnet2); + + // Change the stats default limits. + cfg_mgr.getStagingCfg()->addConfiguredGlobal("statistic-default-sample-count", + Element::create(15)); + cfg_mgr.getStagingCfg()->addConfiguredGlobal("statistic-default-sample-age", + Element::create(2)); + + // Let's commit it + cfg_mgr.commit(); + + EXPECT_EQ(15, stats_mgr.getMaxSampleCountDefault()); + EXPECT_EQ("00:00:02", durationToText(stats_mgr.getMaxSampleAgeDefault(), 0)); + + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-addresses")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-addresses")); + + ObservationPtr total_addrs; + EXPECT_NO_THROW(total_addrs = stats_mgr.getObservation("subnet[42].total-addresses")); + ASSERT_TRUE(total_addrs); + EXPECT_EQ(128, total_addrs->getInteger().first); + EXPECT_TRUE(total_addrs->getMaxSampleCount().first); + EXPECT_EQ(15, total_addrs->getMaxSampleCount().second); + EXPECT_FALSE(total_addrs->getMaxSampleAge().first); + EXPECT_EQ("00:00:02", durationToText(total_addrs->getMaxSampleAge().second, 0)); +} + +// This test verifies that once the configuration is merged into the current +// configuration, statistics are updated appropriately. +TEST_F(CfgMgrTest, mergeIntoCurrentStats4) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + startBackend(AF_INET); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet4Ptr subnet1(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 123)); + CfgSubnets4Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets4(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-addresses", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-addresses", static_cast<int64_t>(150)); + + // There should be no stats for subnet 42 at this point. + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].total-addresses")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].assigned-addresses")); + + // Now, let's create new configuration with updates. + + // There's a subnet 192.1.3.0/24 with ID=42 + Subnet4Ptr subnet2(new Subnet4(IOAddress("192.1.3.0"), 24, 1, 2, 3, 42)); + + // Let's make a pool with 128 addresses available. + PoolPtr pool(new Pool4(IOAddress("192.1.3.0"), 25)); // 128 addrs + subnet2->addPool(pool); + + // Create external configuration to be merged into current one. + auto external_cfg = CfgMgr::instance().createExternalCfg(); + subnets = external_cfg->getCfgSubnets4(); + subnets->add(subnet2); + + external_cfg->addConfiguredGlobal("statistic-default-sample-count", + Element::create(16)); + external_cfg->addConfiguredGlobal("statistic-default-sample-age", + Element::create(3)); + + // Let's merge it. + cfg_mgr.mergeIntoCurrentCfg(external_cfg->getSequence()); + + // The stats should have been updated and so we should be able to get + // observations for subnet 42. + EXPECT_EQ(16, stats_mgr.getMaxSampleCountDefault()); + EXPECT_EQ("00:00:03", durationToText(stats_mgr.getMaxSampleAgeDefault(), 0)); + + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].total-addresses")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].assigned-addresses")); + + // And also for 123 + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-addresses")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-addresses")); + + ObservationPtr total_addrs; + EXPECT_NO_THROW(total_addrs = stats_mgr.getObservation("subnet[42].total-addresses")); + ASSERT_TRUE(total_addrs); + EXPECT_EQ(128, total_addrs->getInteger().first); +} + +// This test verifies that once the configuration is cleared, the statistics +// are removed. +TEST_F(CfgMgrTest, clearStats4) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet4Ptr subnet1(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 123)); + CfgSubnets4Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets4(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-addresses", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-addresses", static_cast<int64_t>(150)); + + // The stats should be there. + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-addresses")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-addresses")); + + // Let's remove all configurations + cfg_mgr.clear(); + + // The stats should not be there anymore. + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-addresses")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-addresses")); +} + +// This test verifies that once the configuration is committed, statistics +// are updated appropriately. +TEST_F(CfgMgrTest, commitStats6) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + startBackend(AF_INET6); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet6Ptr subnet1(new Subnet6(IOAddress("2001:db8:1::"), 48, 1, 2, 3, 4, 123)); + CfgSubnets6Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets6(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-nas", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-nas", static_cast<int64_t>(150)); + + stats_mgr.addValue("subnet[123].total-pds", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-pds", static_cast<int64_t>(150)); + + // Now, let's change the configuration to something new. + + // There's a subnet 2001:db8:2::/48 with ID=42 + Subnet6Ptr subnet2(new Subnet6(IOAddress("2001:db8:2::"), 48, 1, 2, 3, 4, 42)); + + // Let's make pools with 128 addresses and 65536 prefixes available. + PoolPtr pool1(new Pool6(Lease::TYPE_NA, IOAddress("2001:db8:2::"), 121)); // 128 addrs + PoolPtr pool2(new Pool6(Lease::TYPE_PD, IOAddress("2001:db8:3::"), 96, 112)); // 65536 prefixes + subnet2->addPool(pool1); + subnet2->addPool(pool2); + + subnets = cfg_mgr.getStagingCfg()->getCfgSubnets6(); + subnets->add(subnet2); + + // Change the stats default limits. + cfg_mgr.getStagingCfg()->addConfiguredGlobal("statistic-default-sample-count", + Element::create(14)); + cfg_mgr.getStagingCfg()->addConfiguredGlobal("statistic-default-sample-age", + Element::create(10)); + + // Let's commit it + cfg_mgr.commit(); + + EXPECT_EQ(14, stats_mgr.getMaxSampleCountDefault()); + EXPECT_EQ("00:00:10", durationToText(stats_mgr.getMaxSampleAgeDefault(), 0)); + + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-nas")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-nas")); + + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-pds")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-pds")); + + ObservationPtr total_addrs; + EXPECT_NO_THROW(total_addrs = stats_mgr.getObservation("subnet[42].total-nas")); + ASSERT_TRUE(total_addrs); + EXPECT_EQ(128, total_addrs->getInteger().first); + EXPECT_TRUE(total_addrs->getMaxSampleCount().first); + EXPECT_EQ(14, total_addrs->getMaxSampleCount().second); + EXPECT_FALSE(total_addrs->getMaxSampleAge().first); + EXPECT_EQ("00:00:10", durationToText(total_addrs->getMaxSampleAge().second, 0)); + + ObservationPtr total_prfx; + EXPECT_NO_THROW(total_prfx = stats_mgr.getObservation("subnet[42].total-pds")); + ASSERT_TRUE(total_prfx); + EXPECT_EQ(65536, total_prfx->getInteger().first); + EXPECT_TRUE(total_prfx->getMaxSampleCount().first); + EXPECT_EQ(14, total_prfx->getMaxSampleCount().second); + EXPECT_FALSE(total_prfx->getMaxSampleAge().first); + EXPECT_EQ("00:00:10", durationToText(total_prfx->getMaxSampleAge().second, 0)); +} + +// This test verifies that once the configuration is merged into the current +// configuration, statistics are updated appropriately. +/// @todo Enable this test once merging v6 configuration is enabled. +TEST_F(CfgMgrTest, DISABLED_mergeIntoCurrentStats6) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + startBackend(AF_INET6); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet6Ptr subnet1(new Subnet6(IOAddress("2001:db8:1::"), 48, 1, 2, 3, 4, 123)); + CfgSubnets6Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets6(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-nas", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-nas", static_cast<int64_t>(150)); + + stats_mgr.addValue("subnet[123].total-pds", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-pds", static_cast<int64_t>(150)); + + // There should be no stats for subnet 42 at this point. + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].total-nas")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].assigned-nas")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].total-pds")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[42].assigned-pds")); + + // Now, let's create new configuration with updates. + + // There's a subnet 2001:db8:2::/48 with ID=42 + Subnet6Ptr subnet2(new Subnet6(IOAddress("2001:db8:2::"), 48, 1, 2, 3, 4, 42)); + + // Let's make pools with 128 addresses and 65536 prefixes available. + PoolPtr pool1(new Pool6(Lease::TYPE_NA, IOAddress("2001:db8:2::"), 121)); // 128 addrs + PoolPtr pool2(new Pool6(Lease::TYPE_PD, IOAddress("2001:db8:3::"), 96, 112)); // 65536 prefixes + subnet2->addPool(pool1); + subnet2->addPool(pool2); + + // Create external configuration to be merged into current one. + auto external_cfg = CfgMgr::instance().createExternalCfg(); + subnets = external_cfg->getCfgSubnets6(); + subnets->add(subnet2); + + external_cfg->addConfiguredGlobal("statistic-default-sample-count", + Element::create(17)); + external_cfg->addConfiguredGlobal("statistic-default-sample-age", + Element::create(4)); + + // Let's merge it. + cfg_mgr.mergeIntoCurrentCfg(external_cfg->getSequence()); + + EXPECT_EQ(17, stats_mgr.getMaxSampleCountDefault()); + EXPECT_EQ("00:00:04", durationToText(stats_mgr.getMaxSampleAgeDefault(), 0)); + + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].total-nas")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].assigned-nas")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].total-pds")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[42].assigned-pds")); + + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-nas")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-nas")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-pds")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-pds")); + + ObservationPtr total_addrs; + EXPECT_NO_THROW(total_addrs = stats_mgr.getObservation("subnet[42].total-nas")); + ASSERT_TRUE(total_addrs); + EXPECT_EQ(128, total_addrs->getInteger().first); + + EXPECT_NO_THROW(total_addrs = stats_mgr.getObservation("subnet[42].total-pds")); + ASSERT_TRUE(total_addrs); + EXPECT_EQ(65536, total_addrs->getInteger().first); +} + +// This test verifies that once the configuration is cleared, the v6 statistics +// are removed. +TEST_F(CfgMgrTest, clearStats6) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + StatsMgr& stats_mgr = StatsMgr::instance(); + + // Let's prepare the "old" configuration: a subnet with id 123 + // and pretend there were addresses assigned, so statistics are non-zero. + Subnet6Ptr subnet1(new Subnet6(IOAddress("2001:db8:1::"), 48, 1, 2, 3, 4, 123)); + CfgSubnets6Ptr subnets = cfg_mgr.getStagingCfg()->getCfgSubnets6(); + subnets->add(subnet1); + cfg_mgr.commit(); + stats_mgr.addValue("subnet[123].total-nas", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-nas", static_cast<int64_t>(150)); + + stats_mgr.addValue("subnet[123].total-pds", static_cast<int64_t>(256)); + stats_mgr.setValue("subnet[123].assigned-pds", static_cast<int64_t>(150)); + + // The stats should be there. + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-nas")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-nas")); + + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].total-pds")); + EXPECT_TRUE(stats_mgr.getObservation("subnet[123].assigned-pds")); + + // Let's remove all configurations + cfg_mgr.clear(); + + // The stats should not be there anymore. + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-nas")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-nas")); + + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].total-pds")); + EXPECT_FALSE(stats_mgr.getObservation("subnet[123].assigned-pds")); +} + +// This test verifies that the external configuration can be merged into +// the staging configuration via CfgMgr. +TEST_F(CfgMgrTest, mergeIntoStagingCfg) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + + // Create first external configuration. + SrvConfigPtr ext_cfg1; + ASSERT_NO_THROW(ext_cfg1 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg1); + // It should pick the first available sequence number. + EXPECT_EQ(0, ext_cfg1->getSequence()); + + // Create second external configuration. + SrvConfigPtr ext_cfg2; + ASSERT_NO_THROW(ext_cfg2 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg2); + // It should pick the next available sequence number. + EXPECT_EQ(1, ext_cfg2->getSequence()); + + // Those must be two separate instances. + ASSERT_FALSE(ext_cfg1 == ext_cfg2); + + // Add a subnet which will be merged from first configuration. + Subnet4Ptr subnet1(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 123)); + ext_cfg1->getCfgSubnets4()->add(subnet1); + + // Add a subnet which will be merged from the second configuration. + Subnet4Ptr subnet2(new Subnet4(IOAddress("192.1.3.0"), 24, 1, 2, 3, 124)); + ext_cfg2->getCfgSubnets4()->add(subnet2); + + // Merge first configuration. + ASSERT_NO_THROW(cfg_mgr.mergeIntoStagingCfg(ext_cfg1->getSequence())); + // Second attempt should fail because the configuration is discarded after + // the merge. + ASSERT_THROW(cfg_mgr.mergeIntoStagingCfg(ext_cfg1->getSequence()), BadValue); + + // Check that the subnet from first configuration has been merged but not + // from the second configuration. + ASSERT_TRUE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(123)); + ASSERT_FALSE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(124)); + + // Create another configuration instance to check what sequence it would + // pick. It should pick the first available one. + SrvConfigPtr ext_cfg3; + ASSERT_NO_THROW(ext_cfg3 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg3); + EXPECT_EQ(2, ext_cfg3->getSequence()); + + // Merge the second and third (empty) configuration. + ASSERT_NO_THROW(cfg_mgr.mergeIntoStagingCfg(ext_cfg2->getSequence())); + ASSERT_NO_THROW(cfg_mgr.mergeIntoStagingCfg(ext_cfg3->getSequence())); + + // Make sure that both subnets have been merged. + ASSERT_TRUE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(123)); + ASSERT_TRUE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(124)); + + // The next configuration instance should reset the sequence to 0 because + // there are no other configurations in CfgMgr. + SrvConfigPtr ext_cfg4; + ASSERT_NO_THROW(ext_cfg4 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg4); + EXPECT_EQ(0, ext_cfg4->getSequence()); + + // Try to commit the staging configuration. + ASSERT_NO_THROW(cfg_mgr.commit()); + + // Make sure that both subnets are present in the current configuration. + EXPECT_TRUE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(123)); + EXPECT_TRUE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(124)); + + // The staging configuration should not include them. + EXPECT_FALSE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(123)); + EXPECT_FALSE(cfg_mgr.getStagingCfg()->getCfgSubnets4()->getBySubnetId(124)); +} + +// This test verifies that the external configuration can be merged into +// the current configuration via CfgMgr. +TEST_F(CfgMgrTest, mergeIntoCurrentCfg) { + CfgMgr& cfg_mgr = CfgMgr::instance(); + + // Create first external configuration. + SrvConfigPtr ext_cfg1; + ASSERT_NO_THROW(ext_cfg1 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg1); + // It should pick the first available sequence number. + EXPECT_EQ(0, ext_cfg1->getSequence()); + + // Create second external configuration. + SrvConfigPtr ext_cfg2; + ASSERT_NO_THROW(ext_cfg2 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg2); + // It should pick the next available sequence number. + EXPECT_EQ(1, ext_cfg2->getSequence()); + + // Those must be two separate instances. + ASSERT_FALSE(ext_cfg1 == ext_cfg2); + + // Add a subnet which will be merged from first configuration. + Subnet4Ptr subnet1(new Subnet4(IOAddress("192.1.2.0"), 24, 1, 2, 3, 123)); + ext_cfg1->getCfgSubnets4()->add(subnet1); + + // Add a subnet which will be merged from the second configuration. + Subnet4Ptr subnet2(new Subnet4(IOAddress("192.1.3.0"), 24, 1, 2, 3, 124)); + ext_cfg2->getCfgSubnets4()->add(subnet2); + + // Merge first configuration. + ASSERT_NO_THROW(cfg_mgr.mergeIntoCurrentCfg(ext_cfg1->getSequence())); + // Second attempt should fail because the configuration is discarded after + // the merge. + ASSERT_THROW(cfg_mgr.mergeIntoCurrentCfg(ext_cfg1->getSequence()), BadValue); + + // Check that the subnet from first configuration has been merged but not + // from the second configuration. + ASSERT_TRUE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(123)); + ASSERT_FALSE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(124)); + + // Create another configuration instance to check what sequence it would + // pick. It should pick the first available one. + SrvConfigPtr ext_cfg3; + ASSERT_NO_THROW(ext_cfg3 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg3); + EXPECT_EQ(2, ext_cfg3->getSequence()); + + // Merge the second and third (empty) configuration. + ASSERT_NO_THROW(cfg_mgr.mergeIntoCurrentCfg(ext_cfg2->getSequence())); + ASSERT_NO_THROW(cfg_mgr.mergeIntoCurrentCfg(ext_cfg3->getSequence())); + + // Make sure that both subnets have been merged. + ASSERT_TRUE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(123)); + ASSERT_TRUE(cfg_mgr.getCurrentCfg()->getCfgSubnets4()->getBySubnetId(124)); + + // The next configuration instance should reset the sequence to 0 because + // there are no other configurations in CfgMgr. + SrvConfigPtr ext_cfg4; + ASSERT_NO_THROW(ext_cfg4 = cfg_mgr.createExternalCfg()); + ASSERT_TRUE(ext_cfg4); + EXPECT_EQ(0, ext_cfg4->getSequence()); +} + +/// @todo Add unit-tests for testing: +/// - addActiveIface() with invalid interface name +/// - addActiveIface() with the same interface twice +/// - addActiveIface() with a bogus address +/// +/// This is somewhat tricky. Care should be taken here, because it is rather +/// difficult to decide if interface name is valid or not. Some servers, e.g. +/// dibbler, allow to specify interface names that are not currently present in +/// the system. The server accepts them, but upon discovering that they are +/// yet available (for different definitions of not being available), adds +/// the to to-be-activated list. +/// +/// Cases covered by dibbler are: +/// - missing interface (e.g. PPP connection that is not established yet) +/// - downed interface (no link local address, no way to open sockets) +/// - up, but not running interface (wifi up, but not associated) +/// - tentative addresses (interface up and running, but DAD procedure is +/// still in progress) +/// - weird interfaces without link-local addresses (don't ask, 6rd tunnels +/// look weird to me as well) + +// No specific tests for getSubnet6. That method (2 overloaded versions) is tested +// in Dhcpv6SrvTest.selectSubnetAddr and Dhcpv6SrvTest.selectSubnetIface +// (see src/bin/dhcp6/tests/dhcp6_srv_unittest.cc) + +} // end of anonymous namespace |