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+# Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
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+#
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+# Permission to use, copy, modify, and/or distribute this software for any
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+# purpose with or without fee is hereby granted, provided that the above
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+# copyright notice and this permission notice appear in all copies.
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+#
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+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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+# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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+# PERFORMANCE OF THIS SOFTWARE.
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+
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+# Path to the temporary configuration file.
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+CFG_FILE=@abs_top_builddir@/src/bin/d2/tests/test_config.json
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+# Path to the D2 log file.
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+LOG_FILE=@abs_top_builddir@/src/bin/d2/tests/test.log
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+# D2 configuration to be stored in the configuration file.
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+CONFIG="{
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+ \"DhcpDdns\":
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+ {
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+ \"ip_address\": \"127.0.0.1\",
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+ \"port\": 53001,
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+ \"tsig_keys\": [],
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+ \"forward_ddns\" : {},
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+ \"reverse_ddns\" : {}
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+ }
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+}"
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+
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+# Invalid configuration (invalid port) to check that D2
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+# gracefully handles reconfiguration errors.
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+CONFIG_INVALID="{
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+ \"DhcpDdns\":
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+ {
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+ \"ip_address\": \"127.0.0.1\",
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+ \"port\": BOGUS,
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+ \"tsig_keys\": [],
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+ \"forward_ddns\" : {},
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+ \"reverse_ddns\" : {}
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+ }
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+}"
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+
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+# Set the location of the executable.
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+bin="b10-dhcp-ddns"
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+bin_path=@abs_top_builddir@/src/bin/d2
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+
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+# Import common test library.
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+. @abs_top_builddir@/src/lib/testutils/dhcp_test_lib.sh
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+
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+# This test verifies that D2 can be reconfigured with a SIGHUP signal.
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+dynamic_reconfiguration_test() {
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+ # Log the start of the test and print test name.
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+ test_start "dhcp_ddns.dynamic_reconfiguration"
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+ # Remove dangling D2 instances and remove log files.
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+ cleanup
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+ # Create new configuration file.
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+ create_config "${CONFIG}"
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+ # Instruct D2 to log to the specific file.
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+ set_logger
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+ # Start D2.
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+ start_kea ${bin_path}/${bin}
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+ # Wait up to 20s for D2 to start.
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+ wait_for_kea 20
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+ if [ ${_WAIT_FOR_KEA} -eq 0 ]; then
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+ printf "ERROR: timeout waiting for D2 to start.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Check if it is still running. It could have terminated (e.g. as a result
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+ # of configuration failure).
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+ get_pids ${bin}
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+ if [ ${_GET_PIDS_NUM} -ne 1 ]; then
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+ printf "ERROR: expected one D2 process to be started. Found %d processes\
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+ started.\n" ${_GET_PIDS_NUM}
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+ clean_exit 1
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+ fi
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+
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+ # Check in the log file, how many times server has been configured.
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+ # It should be just once on startup.
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+ get_reconfigs
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+ if [ ${_GET_RECONFIGS} -ne 1 ]; then
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+ printf "ERROR: D2 hasn't been configured.\n"
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+ clean_exit 1
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+ else
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+ printf "D2 successfully configured.\n"
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+ fi
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+
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+ # Now use invalid configuration.
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+ create_config "${CONFIG_INVALID}"
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+
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+ # Try to reconfigure by sending SIGHUP
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+ send_signal 1 ${bin}
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+
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+ # Wait up to 10s for the D2Controller to log reload signal received.
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+ wait_for_message 10 "DHCP_DDNS_CFG_FILE_RELOAD_SIGNAL_RECVD" 1
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2 did report the reload signal receipt.\n"
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+ clean_exit 1
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+ fi
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+
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+ # After receiving SIGHUP the server should try to reconfigure itself.
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+ # The configuration provided is invalid so it should result in
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+ # reconfiguration failure but the server should still be running.
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+ wait_for_message 10 "DHCP_DDNS_CFG_FILE_RELOAD_ERROR" 1
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2 did not report reload error.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Make sure the server is still operational.
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+ get_pids ${bin}
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+ if [ ${_GET_PIDS_NUM} -ne 1 ]; then
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+ printf "ERROR: D2 was killed when attempting reconfiguration.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Restore the good configuration.
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+ create_config "${CONFIG}"
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+
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+ # Reconfigure the server with SIGHUP.
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+ send_signal 1 ${bin}
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+
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+ # There should be two occurrences of the DHCP4_CONFIG_COMPLETE messages.
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+ # Wait for it up to 10s.
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+ wait_for_message 10 "DCTL_CONFIG_COMPLETE" 2
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+
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+ # After receiving SIGHUP the server should get reconfigured and the
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+ # reconfiguration should be noted in the log file. We should now
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+ # have two configurations logged in the log file.
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2 hasn't been reconfigured.\n"
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+ clean_exit 1
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+ else
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+ printf "D2 successfully reconfigured.\n"
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+ fi
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+
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+ # Make sure the server is still operational.
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+ get_pids ${bin}
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+ if [ ${_GET_PIDS_NUM} -ne 1 ]; then
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+ printf "ERROR: D2 was killed when attempting reconfiguration.\n"
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+ clean_exit 1
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+ fi
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+
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+ # All ok. Shut down D2 and exit.
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+ test_finish 0
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+}
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+
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+# This test verifies that DHCPv4 server is shut down gracefully when it
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+# receives a SIGINT or SIGTERM signal.
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+shutdown_test() {
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+ test_name=${1} # Test name
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+ signum=${2} # Signal number
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+ # Log the start of the test and print test name.
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+ test_start ${test_name}
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+ # Remove dangling D2 instances and remove log files.
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+ cleanup
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+ # Create new configuration file.
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+ create_config "${CONFIG}"
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+ # Instruct D2 to log to the specific file.
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+ set_logger
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+ # Start D2.
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+ start_kea ${bin_path}/${bin}
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+ # Wait up to 20s for D2 to start.
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+ wait_for_kea 20
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+ if [ ${_WAIT_FOR_KEA} -eq 0 ]; then
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+ printf "ERROR: timeout waiting for D2 to start.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Check if it is still running. It could have terminated (e.g. as a result
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+ # of configuration failure).
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+ get_pids ${bin}
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+ if [ ${_GET_PIDS_NUM} -ne 1 ]; then
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+ printf "ERROR: expected one D2 process to be started. Found %d processes\
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+ started.\n" ${_GET_PIDS_NUM}
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+ clean_exit 1
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+ fi
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+
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+ # Check in the log file, how many times server has been configured.
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+ # It should be just once on startup.
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+ get_reconfigs
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+ if [ ${_GET_RECONFIGS} -ne 1 ]; then
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+ printf "ERROR: server hasn't been configured.\n"
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+ clean_exit 1
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+ else
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+ printf "Server successfully configured.\n"
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+ fi
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+
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+ # Send signal to D2 (SIGTERM, SIGINT etc.)
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+ send_signal ${signum} ${bin}
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+
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+ # Wait up to 10s for the D2Controller to log shutdown received.
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+ wait_for_message 10 "DHCP_DDNS_SHUTDOWN_SIGNAL_RECVD" 1
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2Process did report the shutdown signal receipt.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Wait up to 10s for the D2Process to log graceful shutdown.
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+ wait_for_message 10 "DHCP_DDNS_CLEARED_FOR_SHUTDOWN" 1
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2Process did not log orderly shutdown.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Now wait for D2Controller to log that it is exiting.
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+ wait_for_message 10 "DCTL_STOPPING" 1
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+ if [ ${_WAIT_FOR_MESSAGE} -eq 0 ]; then
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+ printf "ERROR: D2Controller did not log shutdown.\n"
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+ clean_exit 1
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+ fi
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+
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+ # Server should have shut down.
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+ get_pids ${bin}
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+ if [ ${_GET_PIDS_NUM} -ne 0 ]; then
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+ printf "ERROR: D2 did not shut down after receiving signal.\n"\
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+ ${_GET_PIDS_NUM}
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+ clean_exit 1
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+ fi
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+
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+ test_finish 0
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+}
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+
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+dynamic_reconfiguration_test
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+shutdown_test "dhcp-ddns.sigterm_test" 15
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+shutdown_test "dhcp-ddns.sigint_test" 2
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Thomas Markwalder