AT_BANNER([ovs-vswitchd])

dnl The OVS initscripts never make an empty database (one without even an
dnl Open_vSwitch record) visible to ovs-vswitchd, but hand-rolled scripts
dnl sometimes do.  At one point, "ovs-vswitchd --detach" would never detach
dnl and use 100% CPU if this happened, so this test checks for regression.
AT_SETUP([ovs-vswitchd detaches correctly with empty db])
OVS_RUNDIR=`pwd`; export OVS_RUNDIR
OVS_LOGDIR=`pwd`; export OVS_LOGDIR
OVS_DBDIR=`pwd`; export OVS_DBDIR
OVS_SYSCONFDIR=`pwd`; export OVS_SYSCONFDIR
ON_EXIT([kill `cat ovsdb-server.pid ovs-vswitchd.pid`])

dnl Create database.
touch .conf.db.~lock~
AT_CHECK([ovsdb-tool create conf.db $abs_top_srcdir/vswitchd/vswitch.ovsschema])

dnl Start ovsdb-server.  *Don't* initialize database.
AT_CHECK([ovsdb-server --detach --no-chdir --pidfile --log-file --remote=punix:$OVS_RUNDIR/db.sock], [0], [ignore], [ignore])
AT_CAPTURE_FILE([ovsdb-server.log])

dnl Start ovs-vswitchd.
AT_CHECK([ovs-vswitchd --detach --no-chdir --pidfile --enable-dummy --disable-system --log-file], [0], [], [stderr])
AT_CAPTURE_FILE([ovs-vswitchd.log])

dnl ovs-vswitchd detached OK or we wouldn't have made it this far.  Success.
AT_CLEANUP


dnl ----------------------------------------------------------------------
m4_define([OVS_VSCTL_CHECK_RX_PKT], [
AT_CHECK([ovs-vsctl list int $1 | grep statistics | sed -n 's/^.*\(rx_packets=[[0-9]][[0-9]]*\).*$/\1/p'],[0],
[dnl
rx_packets=$2
])
])

AT_SETUP([ovs-vswitchd -- stats-update-interval])
OVS_VSWITCHD_START([add-port br0 p1 -- set int p1 type=internal])
ovs-appctl time/stop

dnl at the beginning, the update of rx_packets should happen every 5 seconds.
ovs-appctl time/warp 11000 1000
OVS_VSCTL_CHECK_RX_PKT([p1], [0])
AT_CHECK([ovs-appctl netdev-dummy/receive p1 'eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x0800),ipv4(src=10.0.0.2,dst=10.0.0.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)'])
ovs-appctl time/warp 11000 1000
OVS_VSCTL_CHECK_RX_PKT([p1], [1])

dnl set the stats update interval to 100K ms, the following 'recv' should not be updated.
AT_CHECK([ovs-vsctl set O . other_config:stats-update-interval=100000])
ovs-appctl time/warp 51000 1000
for i in `seq 1 5`; do
    AT_CHECK([ovs-appctl netdev-dummy/receive p1 'eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x0800),ipv4(src=10.0.0.2,dst=10.0.0.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)'])
done

OVS_VSCTL_CHECK_RX_PKT([p1], [1])
dnl advance the clock by 100K ms, the previous 'recv' should be updated.
ovs-appctl time/warp 100000 1000
OVS_VSCTL_CHECK_RX_PKT([p1], [6])

dnl now remove the configuration. 'recv' one packet.  there should be an update after 5000 ms.
AT_CHECK([ovs-vsctl clear O . other_config])
AT_CHECK([ovs-appctl netdev-dummy/receive p1 'eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x0800),ipv4(src=10.0.0.2,dst=10.0.0.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)'])
ovs-appctl time/warp 11000 1000
OVS_VSCTL_CHECK_RX_PKT([p1], [7])

OVS_VSWITCHD_STOP
AT_CLEANUP

dnl ----------------------------------------------------------------------
AT_SETUP([ovs-vswitchd -- start additional ovs-vswitchd process])
OVS_VSWITCHD_START

# start another ovs-vswitchd process.
ovs-vswitchd --log-file=fakelog --unixctl="`pwd`"/unixctl &

# sleep for a while
sleep 5

# stop the process.
ovs-appctl -t `pwd`/unixctl exit

# check the fakelog, should only see one ERR for reporting
# the existing ovs-vswitchd process.
AT_CHECK([test `grep ERR fakelog | wc -l` -eq 1])

AT_CHECK([tail -n1 fakelog | sed -e 's/^.*ERR|//; s/pid [[0-9]]*//'], [0], [dnl
another ovs-vswitchd process is running, disabling this process () until it goes away
])

OVS_VSWITCHD_STOP
AT_CLEANUP

dnl ----------------------------------------------------------------------
AT_SETUP([ovs-vswitchd -- switch over to another ovs-vswitchd process])
OVS_VSWITCHD_START

# start a new ovs-vswitchd process.
ovs-vswitchd --log-file=fakelog --enable-dummy --unixctl="`pwd`"/unixctl &

# sleep for a while.
sleep 5

# kill the current active ovs-vswitchd process.
kill `cat ovs-vswitchd.pid`

sleep 5

# check the creation of br0 on the new ovs-vswitchd process.
AT_CHECK([grep "bridge br0" fakelog | sed -e 's/port [[0-9]]*$/port/;
s/datapath ID [[a-z0-9]]*$/datapath ID/;s/^.*INFO|//'], [0], [dnl
bridge br0: added interface br0 on port
bridge br0: using datapath ID
])

# stop the process.
ovs-appctl -t `pwd`/unixctl exit

# check the fakelog, should not see WARN/ERR/EMER log other than the one
# for reporting the existing ovs-vswitchd process and the one for killing
# the process.
AT_CHECK([sed -n "
/|ERR|another ovs-vswitchd process is running/d
/|WARN|/p
/|ERR|/p
/|EMER|/p" fakelog
])

# cleanup.
kill `cat ovsdb-server.pid`
AT_CLEANUP

dnl ----------------------------------------------------------------------
AT_SETUP([ovs-vswitchd -- invalid database path])

# start an ovs-vswitchd process with invalid db path.
ovs-vswitchd unix:invalid.db.sock --log-file=fakelog --enable-dummy --unixctl="`pwd`"/unixctl &

# sleep for a while.
sleep 10

# stop the process.
ovs-appctl -t `pwd`/unixctl exit

# should not see this log (which indicates high cpu utilization).
AT_CHECK([grep "wakeup due to" fakelog], [ignore])

# check the fakelog, should not see any WARN/ERR/EMER log.
AT_CHECK([sed -n "
/|WARN|/p
/|ERR|/p
/|EMER|/p" fakelog
])

AT_CLEANUP