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Diffstat (limited to 'src/hooks/dhcp/high_availability/libloadtests/close_unittests.cc')
| -rw-r--r-- | src/hooks/dhcp/high_availability/libloadtests/close_unittests.cc | 798 |
1 files changed, 798 insertions, 0 deletions
diff --git a/src/hooks/dhcp/high_availability/libloadtests/close_unittests.cc b/src/hooks/dhcp/high_availability/libloadtests/close_unittests.cc new file mode 100644 index 0000000..1c122d1 --- /dev/null +++ b/src/hooks/dhcp/high_availability/libloadtests/close_unittests.cc @@ -0,0 +1,798 @@ +// Copyright (C) 2020-2021 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/. + +/// @file This file contains tests which exercise the load and unload +/// functions in the high availability hook library. In order to test +/// the load function, one must be able to pass it hook library +/// parameters. The the only way to populate these parameters is by +/// actually loading the library via HooksManager::loadLibraries(). + +#include <config.h> + +#include <asiolink/asio_wrapper.h> +#include <asiolink/io_service.h> +#include <cc/command_interpreter.h> +#include <cc/data.h> +#include <dhcp/dhcp4.h> +#include <dhcp/dhcp6.h> +#include <dhcp/duid.h> +#include <dhcp/hwaddr.h> +#include <dhcp/option.h> +#include <dhcp/pkt4.h> +#include <dhcp/pkt6.h> +#include <dhcpsrv/cfgmgr.h> +#include <dhcpsrv/network_state.h> +#include <hooks/hooks.h> +#include <hooks/hooks_manager.h> +#include <hooks/callout_manager.h> +#include <process/daemon.h> +#include <util/buffer.h> +#include <util/watched_thread.h> + +#include <gtest/gtest.h> + +#include <boost/weak_ptr.hpp> +#include <errno.h> +#include <fcntl.h> +#include <iostream> +#include <map> +#include <netinet/in.h> +#include <sys/ioctl.h> +#include <sys/select.h> +#include <unistd.h> + +using namespace std; +using namespace isc; +using namespace isc::asiolink; +using namespace isc::config; +using namespace isc::data; +using namespace isc::dhcp; +using namespace isc::hooks; +using namespace isc::process; +using namespace isc::util; + +namespace { + +/// @brief Structure that holds registered hook indexes. +struct TestHooks { + /// @brief Index of dhcp4_srv_configured callout. + int hook_index_dhcp4_srv_configured_; + + /// @brief Index of buffer4_receive callout. + int hook_index_buffer4_receive_; + + /// @brief Index of leases4_committed callout. + int hook_index_leases4_committed_; + + /// @brief Index of dhcp6_srv_configured callout. + int hook_index_dhcp6_srv_configured_; + + /// @brief Index of buffer6_receive callout. + int hook_index_buffer6_receive_; + + /// @brief Index of leases6_committed callout. + int hook_index_leases6_committed_; + + /// @brief Constructor + /// + /// The constructor registers hook points for callout tests. + TestHooks() { + hook_index_dhcp4_srv_configured_ = + HooksManager::registerHook("dhcp4_srv_configured"); + hook_index_buffer4_receive_ = + HooksManager::registerHook("buffer4_receive"); + hook_index_leases4_committed_ = + HooksManager::registerHook("leases4_committed"); + hook_index_dhcp6_srv_configured_ = + HooksManager::registerHook("dhcp6_srv_configured"); + hook_index_buffer6_receive_ = + HooksManager::registerHook("buffer6_receive"); + hook_index_leases6_committed_ = + HooksManager::registerHook("leases6_committed"); + } +}; + +TestHooks testHooks; + +/// @brief Test fixture for testing closing the HA library +class CloseHATest : public ::testing::Test { +public: + /// @brief Constructor + CloseHATest() { + } + + /// @brief Destructor + virtual ~CloseHATest() { + HooksManager::prepareUnloadLibraries(); + bool status = HooksManager::unloadLibraries(); + if (!status) { + cerr << "(fixture dtor) unloadLibraries failed" << endl; + } + } + + /// @brief Return HA configuration with three servers in JSON format. + /// + /// @param backup Flag to set this server as backup server. + ConstElementPtr createValidJsonConfiguration(bool backup = false) const; + + /// @brief Run partners. + /// + /// Simulate partners by accepting connections. The HA will send + /// lease updates and waits for answers so will own the query. + void runPartners(); + + /// @brief The watched thread. + WatchedThreadPtr wthread_; +}; + +ConstElementPtr +CloseHATest::createValidJsonConfiguration(bool backup) const { + std::ostringstream config_text; + config_text << + "[" + " {" + " \"this-server-name\": \"" << (!backup ? "server1" : "server2") << "\"," + " \"mode\": \"passive-backup\"," + " \"wait-backup-ack\": true," + " \"peers\": [" + " {" + " \"name\": \"server1\"," + " \"url\": \"http://127.0.0.1:18123/\"," + " \"role\": \"primary\"" + " }," + " {" + " \"name\": \"server2\"," + " \"url\": \"http://127.0.0.1:18124/\"," + " \"role\": \"backup\"" + " }," + " {" + " \"name\": \"server3\"," + " \"url\": \"http://127.0.0.1:18125/\"," + " \"role\": \"backup\"" + " }" + " ]" + " }" + "]"; + + return (Element::fromJSON(config_text.str())); +} + +void +CloseHATest::runPartners() { + int accept_partner1 = -1; + int accept_partner2 = -1; + std::map<int, bool> readers; + + try { + struct sockaddr_in partner; + memset(&partner, 0, sizeof(partner)); + partner.sin_family = AF_INET; +#ifdef HAVE_SA_LEN + partner.sin_len = sizeof(partner); +#endif + partner.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + socklen_t slen = sizeof(partner); + +#define SA(x) reinterpret_cast<const sockaddr*>(x) + accept_partner1 = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); + if (accept_partner1 < 0) { + isc_throw(Unexpected, "socket1 " << strerror(errno)); + } + if (fcntl(accept_partner1, F_SETFL, O_NONBLOCK) < 0) { + isc_throw(Unexpected, "fcntl1 " << strerror(errno)); + } + + int reuse_addr = 1; + if (setsockopt(accept_partner1, SOL_SOCKET, SO_REUSEADDR, + (char *)&reuse_addr, sizeof(reuse_addr)) < 0) { + isc_throw(Unexpected, "partner1 setsocketopt SO_REUSEADDR failed: " << strerror(errno)); + } + + partner.sin_port = htons(18124); + if (::bind(accept_partner1, SA(&partner), slen) < 0) { + isc_throw(Unexpected, "bind1 " << strerror(errno)); + } + if (listen(accept_partner1, 1) < 0) { + isc_throw(Unexpected, "listen1 " << strerror(errno)); + } + + accept_partner2 = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); + if (accept_partner2 < 0) { + isc_throw(Unexpected, "socket2 " << strerror(errno)); + } + if (fcntl(accept_partner2, F_SETFL, O_NONBLOCK) < 0) { + isc_throw(Unexpected, "fcntl2 " << strerror(errno)); + } + + if (setsockopt(accept_partner2, SOL_SOCKET, SO_REUSEADDR, + (char *)&reuse_addr, sizeof(reuse_addr)) < 0) { + isc_throw(Unexpected, "partner2 setsocketopt SO_REUSEADDR failed: " << strerror(errno)); + } + + partner.sin_port = htons(18125); + if (::bind(accept_partner2, SA(&partner), slen) < 0) { + isc_throw(Unexpected, "bind2 " << strerror(errno)); + } + if (listen(accept_partner2, 1) < 0) { + isc_throw(Unexpected, "listen2 " << strerror(errno)); + } + + wthread_->markReady(WatchedThread::READY); + + for (;;) { + int nfd; + fd_set fds; + FD_ZERO(&fds); + FD_SET(wthread_->getWatchFd(WatchedThread::TERMINATE), &fds); + nfd = wthread_->getWatchFd(WatchedThread::TERMINATE); + FD_SET(accept_partner1, &fds); + if (accept_partner1 > nfd) { + nfd = accept_partner1; + } + FD_SET(accept_partner2, &fds); + if (accept_partner2 > nfd) { + nfd = accept_partner2; + } + for (auto reader : readers) { + if (!reader.second) { + continue; + } + int fd = reader.first; + FD_SET(fd, &fds); + if (fd > nfd) { + nfd = fd; + } + } + struct timeval tm; + tm.tv_sec = tm.tv_usec = 0; + int n = select(nfd + 1, &fds, 0, 0, &tm); + if ((n < 0) && (errno == EINTR)) { + cerr << "interrupted" << endl; + continue; + } + if (FD_ISSET(wthread_->getWatchFd(WatchedThread::TERMINATE), &fds)) { + break; + } + if (FD_ISSET(accept_partner1, &fds)) { + int fd = accept(accept_partner1, 0, 0); + if (fd < 0) { + cerr << "accept1 failed " << strerror(errno) << endl; + } else { + if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) { + cerr << "fcntl NONBLOCK " << strerror(errno) << endl; + } + readers[fd] = true; + } + } + if (FD_ISSET(accept_partner2, &fds)) { + int fd = accept(accept_partner2, 0, 0); + if (fd < 0) { + cerr << "accept2 failed " << strerror(errno) << endl; + } else { + if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) { + cerr << "fcntl NONBLOCK " << strerror(errno) << endl; + } + readers[fd] = true; + } + } + for (auto reader : readers) { + if (!reader.second) { + continue; + } + int fd = reader.first; + if (FD_ISSET(fd, &fds)) { + char buf[128]; + int cc = read(fd, buf, 128); + if (cc < 0) { + cerr << "read " << strerror(errno) << endl; + } + if (cc == 0) { + readers[fd] = false; + close(fd); + } + } + } + } + } catch (const std::exception& ex) { + wthread_->setError(ex.what()); + } + + wthread_->clearReady(WatchedThread::TERMINATE); + if (accept_partner1 >= 0) { + close(accept_partner1); + accept_partner1 = -1; + } + if (accept_partner2 >= 0) { + close(accept_partner2); + accept_partner2 = -1; + } + for (auto reader : readers) { + if (!reader.second) { + continue; + } + int fd = reader.first; + readers[fd] = false; + close(fd); + } +} + +// Test that checks that the library can be loaded and unloaded from a DHCPv4 +// active server. +// 1. Creates one active and 2 backup servers. +// 2. Check that the network state is reset and updated to expected state when +// creating the HAService by calling the dhcp4_srv_configured hook. +// 3. Send ha-heartbeat to make the server transition 'passive-backup' state. +// 4. Call buffer4_receive and leases4_committed hooks to make sure that the +// parked packet is owned strictly by the HA library. +// 5. Verify that releasing the query will release all resources. +// 6. Unload the library which should not have any dangling resources. +// 7. Verify that the network state is reset on unload. +TEST_F(CloseHATest, close4) { + // Start partners. + wthread_.reset(new WatchedThread()); + wthread_->start([this] () { runPartners(); }); + + // Prepare parameters, + ElementPtr params = Element::createMap(); + params->set("high-availability", createValidJsonConfiguration()); + + // Set family and proc name. + CfgMgr::instance().setFamily(AF_INET); + Daemon::setProcName("kea-dhcp4"); + + // Load the library. + HookLibsCollection libraries; + libraries.push_back(make_pair(LIBDHCP_HA_SO, params)); + ASSERT_TRUE(HooksManager::loadLibraries(libraries)); + + // Prepare objects. + IOServicePtr io_service(new IOService()); + NetworkStatePtr network_state(new NetworkState(NetworkState::DHCPv4)); + Pkt4Ptr query(new Pkt4(DHCPREQUEST, 12345)); + HWAddrPtr hwaddr(new HWAddr(std::vector<uint8_t>(6, 1), HTYPE_ETHER)); + query->setHWAddr(hwaddr); + ASSERT_NO_THROW(query->pack()); + const OutputBuffer& buffer = query->getBuffer(); + query.reset(new Pkt4(reinterpret_cast<const uint8_t*>(buffer.getData()), + buffer.getLength())); + + Lease4Ptr lease(new Lease4(IOAddress("192.0.2.1"), hwaddr, + static_cast<const uint8_t*>(0), 0, + 60, 0, 1)); + Lease4CollectionPtr leases(new Lease4Collection()); + leases->push_back(lease); + Lease4CollectionPtr deleted_leases(new Lease4Collection()); + + // Check that the disabled state is reset on dhcp4_srv_configured. + ASSERT_TRUE(network_state->isServiceEnabled()); + network_state->disableService(NetworkState::Origin::HA_COMMAND); + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Start HA service. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_dhcp4_srv_configured_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("io_context", io_service); + handle->setArgument("network_state", network_state); + HooksManager::callCallouts(testHooks.hook_index_dhcp4_srv_configured_, + *handle); + } + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Pretend to be the partner. + ConstElementPtr command = createCommand("ha-heartbeat", "dhcp4"); + ConstElementPtr response; + EXPECT_TRUE(HooksManager::commandHandlersPresent("ha-heartbeat")); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("command", command); + handle->setArgument("response", response); + HooksManager::callCommandHandlers("ha-heartbeat", *handle); + handle->getArgument("response", response); + } + int code = 0; + ConstElementPtr arguments = parseAnswer(code, response); + EXPECT_EQ(0, code); + ASSERT_TRUE(arguments); + ASSERT_EQ(Element::map, arguments->getType()); + ConstElementPtr state = arguments->get("state"); + ASSERT_TRUE(state); + ASSERT_EQ(Element::string, state->getType()); + EXPECT_EQ("passive-backup", state->stringValue()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Submit packet. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_buffer4_receive_)); + { + // Use the query callout handle. + CalloutHandlePtr handle = query->getCalloutHandle(); + ScopedCalloutHandleState handle_state(handle); + handle->setArgument("query4", query); + + // Park the packet proactively as the server normally would. + HooksManager::park("leases4_committed", query, []{}); + + // Invoke the callouts. + HooksManager::callCallouts(testHooks.hook_index_buffer4_receive_, + *handle); + EXPECT_EQ(CalloutHandle::NEXT_STEP_SKIP, handle->getStatus()); + } + + // Wait for the partners. + while (!wthread_->isReady(WatchedThread::READY) && + !wthread_->isReady(WatchedThread::ERROR)) { + cerr << "."; + usleep(50000); + } + if (wthread_->isReady(WatchedThread::ERROR)) { + cerr << "partners simulation failed " + << wthread_->getLastError() << endl; + } + + // Submit lease. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_leases4_committed_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("query4", query); + handle->setArgument("leases4", leases); + handle->setArgument("deleted_leases4", deleted_leases); + HooksManager::callCallouts(testHooks.hook_index_leases4_committed_, + *handle); + EXPECT_EQ(CalloutHandle::NEXT_STEP_PARK, handle->getStatus()); + } + + // Done: purge I/Os. + io_service->poll(); + io_service->stop(); + io_service.reset(); + + // Verify the HA owns the query. + boost::weak_ptr<Pkt4> weak_query(query); + query.reset(); + EXPECT_FALSE(weak_query.expired()); + + EXPECT_FALSE(HooksManager::unloadLibraries()); + + // Tell the HA to cleanup first. + EXPECT_NO_THROW(HooksManager::prepareUnloadLibraries()); + EXPECT_TRUE(HooksManager::unloadLibraries()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Stop partners. + wthread_->stop(); +} + +// Test that checks that the library can be loaded and unloaded from a DHCPv4 +// backup server. +// 1. Creates one active and 2 backup servers. +// 2. Check that the network state is reset and updated to expected state when +// creating the HAService by calling the dhcp4_srv_configured hook. +// 3. Send ha-heartbeat to make the server transition 'backup' state. +// 4. Unload the library which should not have any dangling resources. +// 5. Verify that the network state is reset on unload. +TEST_F(CloseHATest, close4Backup) { + // Start partners. + wthread_.reset(new WatchedThread()); + wthread_->start([this] () { runPartners(); }); + + // Prepare parameters, + ElementPtr params = Element::createMap(); + params->set("high-availability", createValidJsonConfiguration(true)); + + // Set family and proc name. + CfgMgr::instance().setFamily(AF_INET); + Daemon::setProcName("kea-dhcp4"); + + // Load the library. + HookLibsCollection libraries; + libraries.push_back(make_pair(LIBDHCP_HA_SO, params)); + ASSERT_TRUE(HooksManager::loadLibraries(libraries)); + + // Prepare objects. + IOServicePtr io_service(new IOService()); + NetworkStatePtr network_state(new NetworkState(NetworkState::DHCPv4)); + + // Check that the state is computed on dhcp4_srv_configured. + // It is first reset by the constructor and then adjusted by running the + // state model. + ASSERT_TRUE(network_state->isServiceEnabled()); + network_state->disableService(NetworkState::Origin::HA_COMMAND); + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Start HA service. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_dhcp4_srv_configured_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("io_context", io_service); + handle->setArgument("network_state", network_state); + HooksManager::callCallouts(testHooks.hook_index_dhcp4_srv_configured_, + *handle); + } + + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Transition to backup state. + ConstElementPtr command = createCommand("ha-heartbeat", "dhcp4"); + ConstElementPtr response; + EXPECT_TRUE(HooksManager::commandHandlersPresent("ha-heartbeat")); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("command", command); + handle->setArgument("response", response); + HooksManager::callCommandHandlers("ha-heartbeat", *handle); + handle->getArgument("response", response); + } + int code = 0; + ConstElementPtr arguments = parseAnswer(code, response); + EXPECT_EQ(0, code); + ASSERT_TRUE(arguments); + ASSERT_EQ(Element::map, arguments->getType()); + ConstElementPtr state = arguments->get("state"); + ASSERT_TRUE(state); + ASSERT_EQ(Element::string, state->getType()); + EXPECT_EQ("backup", state->stringValue()); + + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Done: purge I/Os. + io_service->poll(); + io_service->stop(); + io_service.reset(); + + EXPECT_TRUE(HooksManager::unloadLibraries()); + + // Tell the HA to cleanup first. + EXPECT_NO_THROW(HooksManager::prepareUnloadLibraries()); + EXPECT_TRUE(HooksManager::unloadLibraries()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Stop partners. + wthread_->stop(); +} + +// Test that checks that the library can be loaded and unloaded from a DHCPv6 +// active server. +// 1. Creates one active and 2 backup servers. +// 2. Check that the network state is reset and updated to expected state when +// creating the HAService by calling the dhcp6_srv_configured hook. +// 3. Send ha-heartbeat to make the server transition 'passive-backup' state. +// 4. Call buffer6_receive and leases6_committed hooks to make sure that the +// parked packet is owned strictly by the HA library. +// 5. Verify that releasing the query will release all resources. +// 6. Unload the library which should not have any dangling resources. +// 7. Verify that the network state is reset on unload. +TEST_F(CloseHATest, close6) { + // Start partners. + wthread_.reset(new WatchedThread()); + wthread_->start([this] () { runPartners(); }); + + // Prepare parameters, + ElementPtr params = Element::createMap(); + params->set("high-availability", createValidJsonConfiguration()); + + // Set family and proc name. + CfgMgr::instance().setFamily(AF_INET6); + Daemon::setProcName("kea-dhcp6"); + + // Load the library. + HookLibsCollection libraries; + libraries.push_back(make_pair(LIBDHCP_HA_SO, params)); + ASSERT_TRUE(HooksManager::loadLibraries(libraries)); + + // Prepare objects. + IOServicePtr io_service(new IOService()); + NetworkStatePtr network_state(new NetworkState(NetworkState::DHCPv6)); + Pkt6Ptr query(new Pkt6(DHCPV6_REQUEST, 12345)); + DuidPtr duid(new DUID(std::vector<uint8_t>(8, 2))); + OptionPtr opt_duid(new Option(Option::V6, D6O_CLIENTID, duid->getDuid())); + query->addOption(opt_duid); + ASSERT_NO_THROW(query->pack()); + const OutputBuffer& buffer = query->getBuffer(); + query.reset(new Pkt6(reinterpret_cast<const uint8_t*>(buffer.getData()), + buffer.getLength())); + + Lease6Ptr lease(new Lease6(Lease::TYPE_NA, IOAddress("2001:db8:1::2"), + duid, 1234, 50, 60, 1)); + Lease6CollectionPtr leases(new Lease6Collection()); + leases->push_back(lease); + Lease6CollectionPtr deleted_leases(new Lease6Collection()); + + // Check that the disabled state is reset on dhcp6_srv_configured. + ASSERT_TRUE(network_state->isServiceEnabled()); + network_state->disableService(NetworkState::Origin::HA_COMMAND); + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Start HA service. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_dhcp6_srv_configured_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("io_context", io_service); + handle->setArgument("network_state", network_state); + HooksManager::callCallouts(testHooks.hook_index_dhcp6_srv_configured_, + *handle); + } + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Pretend to be the partner. + ConstElementPtr command = createCommand("ha-heartbeat", "dhcp6"); + ConstElementPtr response; + EXPECT_TRUE(HooksManager::commandHandlersPresent("ha-heartbeat")); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("command", command); + handle->setArgument("response", response); + HooksManager::callCommandHandlers("ha-heartbeat", *handle); + handle->getArgument("response", response); + } + int code = 0; + ConstElementPtr arguments = parseAnswer(code, response); + EXPECT_EQ(0, code); + ASSERT_TRUE(arguments); + ASSERT_EQ(Element::map, arguments->getType()); + ConstElementPtr state = arguments->get("state"); + ASSERT_TRUE(state); + ASSERT_EQ(Element::string, state->getType()); + EXPECT_EQ("passive-backup", state->stringValue()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Submit packet. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_buffer6_receive_)); + { + // Use the query callout handle. + CalloutHandlePtr handle = query->getCalloutHandle(); + ScopedCalloutHandleState handle_state(handle); + handle->setArgument("query6", query); + + // Park the packet proactively as the server normally would. + HooksManager::park("leases6_committed", query, []{}); + + // Invoke the callouts. + HooksManager::callCallouts(testHooks.hook_index_buffer6_receive_, + *handle); + EXPECT_EQ(CalloutHandle::NEXT_STEP_SKIP, handle->getStatus()); + } + + // Wait for the partners. + while (!wthread_->isReady(WatchedThread::READY) && + !wthread_->isReady(WatchedThread::ERROR)) { + cerr << "."; + usleep(50000); + } + if (wthread_->isReady(WatchedThread::ERROR)) { + cerr << "partners simulation failed " + << wthread_->getLastError() << endl; + } + + // Submit lease. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_leases6_committed_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("query6", query); + handle->setArgument("leases6", leases); + handle->setArgument("deleted_leases6", deleted_leases); + HooksManager::callCallouts(testHooks.hook_index_leases6_committed_, + *handle); + EXPECT_EQ(CalloutHandle::NEXT_STEP_PARK, handle->getStatus()); + } + + // Done: purge I/Os. + io_service->poll(); + io_service->stop(); + io_service.reset(); + + // Verify the HA owns the query. + boost::weak_ptr<Pkt6> weak_query(query); + query.reset(); + EXPECT_FALSE(weak_query.expired()); + + EXPECT_FALSE(HooksManager::unloadLibraries()); + + // Tell the HA to cleanup first. + EXPECT_NO_THROW(HooksManager::prepareUnloadLibraries()); + EXPECT_TRUE(HooksManager::unloadLibraries()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Stop partners. + wthread_->stop(); +} + +// Test that checks that the library can be loaded and unloaded from a DHCPv6 +// backup server. +// 1. Creates one active and 2 backup servers. +// 2. Check that the network state is reset and updated to expected state when +// creating the HAService by calling the dhcp6_srv_configured hook. +// 3. Send ha-heartbeat to make the server transition 'backup' state. +// 4. Unload the library which should not have any dangling resources. +// 5. Verify that the network state is reset on unload. +TEST_F(CloseHATest, close6Backup) { + // Start partners. + wthread_.reset(new WatchedThread()); + wthread_->start([this] () { runPartners(); }); + + // Prepare parameters, + ElementPtr params = Element::createMap(); + params->set("high-availability", createValidJsonConfiguration(true)); + + // Set family and proc name. + CfgMgr::instance().setFamily(AF_INET6); + Daemon::setProcName("kea-dhcp6"); + + // Load the library. + HookLibsCollection libraries; + libraries.push_back(make_pair(LIBDHCP_HA_SO, params)); + ASSERT_TRUE(HooksManager::loadLibraries(libraries)); + + // Prepare objects. + IOServicePtr io_service(new IOService()); + NetworkStatePtr network_state(new NetworkState(NetworkState::DHCPv6)); + + // Check that the state is computed on dhcp6_srv_configured. + // It is first reset by the constructor and then adjusted by running the + // state model. + ASSERT_TRUE(network_state->isServiceEnabled()); + network_state->disableService(NetworkState::Origin::HA_COMMAND); + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Start HA service. + EXPECT_TRUE(HooksManager::calloutsPresent(testHooks.hook_index_dhcp6_srv_configured_)); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("io_context", io_service); + handle->setArgument("network_state", network_state); + HooksManager::callCallouts(testHooks.hook_index_dhcp6_srv_configured_, + *handle); + } + + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Transition to backup state. + ConstElementPtr command = createCommand("ha-heartbeat", "dhcp6"); + ConstElementPtr response; + EXPECT_TRUE(HooksManager::commandHandlersPresent("ha-heartbeat")); + { + CalloutHandlePtr handle = HooksManager::createCalloutHandle(); + handle->setArgument("command", command); + handle->setArgument("response", response); + HooksManager::callCommandHandlers("ha-heartbeat", *handle); + handle->getArgument("response", response); + } + int code = 0; + ConstElementPtr arguments = parseAnswer(code, response); + EXPECT_EQ(0, code); + ASSERT_TRUE(arguments); + ASSERT_EQ(Element::map, arguments->getType()); + ConstElementPtr state = arguments->get("state"); + ASSERT_TRUE(state); + ASSERT_EQ(Element::string, state->getType()); + EXPECT_EQ("backup", state->stringValue()); + + ASSERT_FALSE(network_state->isServiceEnabled()); + + // Done: purge I/Os. + io_service->poll(); + io_service->stop(); + io_service.reset(); + + EXPECT_TRUE(HooksManager::unloadLibraries()); + + // Tell the HA to cleanup first. + EXPECT_NO_THROW(HooksManager::prepareUnloadLibraries()); + EXPECT_TRUE(HooksManager::unloadLibraries()); + + ASSERT_TRUE(network_state->isServiceEnabled()); + + // Stop partners. + wthread_->stop(); +} + +} |