#! /bin/sh
#
# Copyright (c) 2013, 2015, 2016 Nicira, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -e

run() {
    echo "$@"
    (cd "$sandbox" && "$@") || exit 1
}

run_xterm() {
    title=$1;
    shift
    run xterm -T "$title" -e "$@"  &
}

rungdb() {
    under_gdb=$1
    gdb_run=$2
    shift
    shift

    # Remove the --detach and to put the process under gdb control.
    # Also remove --vconsole:off to allow error message to show up
    # on the console.
    # Use "DISPLAY" variable to determine out if X is supported
    if $under_gdb && [ "$DISPLAY" ]; then
        args=`echo $@ |sed s/--detach//g | sed s/--vconsole:off//g`
        xterm_title=$1

        gdb_cmd=""
        if $gdb_run; then
            gdb_cmd="-ex run"
        fi

        run_xterm $xterm_title gdb $gdb_cmd --args $args
    else
        run $@
    fi
}

gdb_vswitchd=false
gdb_ovsdb=false
gdb_vswitchd_ex=false
gdb_ovsdb_ex=false
gdb_ovn_northd=false
gdb_ovn_northd_ex=false
gdb_ovn_ic=false
gdb_ovn_ic_ex=false
gdb_ovn_controller=false
gdb_ovn_controller_ex=false
gdb_ovn_controller_vtep=false
gdb_ovn_controller_vtep_ex=false
builddir=
ovsbuilddir=
srcdir=
ovssrcdir=
schema=
installed=false
built=false
ddlog=false
ddlog_record=true
ic_sb_schema=
ic_nb_schema=
ovn_rbac=true
n_northds=1
n_ics=1
n_controllers=1
ovs_source=
vtep_source=
nbdb_model=standalone
nbdb_servers=3
nbdb_source=
sbdb_model=backup
sbdb_servers=3
sbdb_source=
ic_nb_model=clustered
ic_nb_servers=3
ic_sb_model=clustered
ic_sb_servers=3
dummy=override

for option; do
    # This option-parsing mechanism borrowed from a Autoconf-generated
    # configure script under the following license:

    # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
    # 2002, 2003, 2004, 2005, 2006, 2009, 2013 Free Software Foundation, Inc.
    # This configure script is free software; the Free Software Foundation
    # gives unlimited permission to copy, distribute and modify it.

    # If the previous option needs an argument, assign it.
    if test -n "$prev"; then
        eval $prev=\$option
        prev=
        continue
    fi
    case $option in
        *=*) optarg=`expr "X$option" : '[^=]*=\(.*\)'` ;;
        *) optarg=yes ;;
    esac

    case $dashdash$option in
        --)
            dashdash=yes ;;
        -h|--help)
            cat <<EOF
ovs-sandbox, for starting a sandboxed dummy OVN environment
usage: $0 [OPTION...]

The usual way to start this is via "make sandbox".  If you do that, then
the Makefile will automatically pass in the configured OVS source and
build directories.  You can pass extra options via SANDBOXFLAGS, e.g.:
    make sandbox SANDBOXFLAGS='...'

These options force ovs-sandbox to use a particular OVN and OVS build:
  -b, --builddir=DIR   specify OVN build directory
  -s, --srcdir=DIR     specify OVN source directory
  --ovs-build, --ovsbuilddir=DIR specify Open vSwitch build directory
  --ovs-src, --ovssrcdir=DIR specify Open vSwitch source directory
These options force ovs-sandbox to use an installed Open vSwitch:
  -i, --installed      use installed Open vSwitch

General options:
  -g, --gdb-vswitchd   run ovs-vswitchd under gdb
  -d, --gdb-ovsdb      run ovsdb-server under gdb
  --gdb-ovn-northd     run ovn-northd under gdb
  --gdb-ovn-ic         run ovn-ic under gdb
  --gdb-ovn-controller run ovn-controller under gdb
  --gdb-ovn-controller-vtep run ovn-controller-vtep under gdb
  --dummy=ARG          pass --enable-dummy=ARG to vswitchd (default: override)
  -R, --gdb-run        automatically start running the daemon in gdb
                       for any daemon set to run under gdb
  -S, --schema=FILE    use FILE as vswitch.ovsschema

OVN options:
  --ddlog              use ovn-northd-ddlog
  --no-ddlog-record    do not record ddlog transactions (for performance)
  --no-ovn-rbac        disable role-based access control for OVN
  --n-northds=NUMBER   run NUMBER copies of northd (default: 1)
  --n-ics=NUMBER       run NUMBER copies of ic (default: 1)
  --nbdb-model=standalone|backup|clustered    northbound database model
  --nbdb-servers=N     number of servers in nbdb cluster (default: 3)
  --nbdb-source=FILE   database or schema to copy NBDB from
  --sbdb-model=standalone|backup|clustered    southbound database model
  --sbdb-servers=N     number of servers in sbdb cluster (default: 3)
  --sbdb-source=FILE     database or schema to copy SBDB from
  --ic-nb-model=standalone|backup|clustered   ic-northbound database model
  --ic-nb-servers=N     number of servers in IC NB cluster (default: 3)
  --ic-sb-model=standalone|backup|clustered   ic-southbound database model
  --ic-sb-servers=N     number of servers in IC SB cluster (default: 3)

Other options:
  -h, --help           Print this usage message.
EOF
            exit 0
            ;;

        --b*=*)
            builddir=$optarg
            built=:
            ;;
        -b|--b*)
            prev=builddir
            built=:
            ;;
        --ovs-build*=*)
            ovsbuilddir=$optarg
            ;;
        --ovs-build*)
            prev=ovsbuilddir
            ;;
        --ovs-src*=*)
            ovssrcdir=$optarg
            ;;
        --ovs-src*)
            prev=ovssrcdir
            ;;
        --sr*=*)
            srcdir=$optarg
            built=false
            ;;
        --dummy)
            prev=dummy
            ;;
        --dummy=*)
            dummy=$optarg
            ;;
        -s|--sr*)
            prev=srcdir
            built=false
            ;;
        -i|--installed)
            installed=:
            ;;
        --sc*=*)
            schema=$optarg
            installed=:
            ;;
        -S|--sc*)
            prev=schema
            installed=:
            ;;
        -g|--gdb-v*)
            gdb_vswitchd=true
            gdb_vswitchd_ex=false
            ;;
        -e|--gdb-ex-v*)
            gdb_vswitchd=true
            gdb_vswitchd_ex=true
            ;;
        -d|--gdb-ovsdb)
            gdb_ovsdb=true
            gdb_ovsdb_ex=false
            ;;
        -r|--gdb-ex-o*)
            gdb_ovsdb=true
            gdb_ovsdb_ex=true
            ;;
        --gdb-ovn-northd)
            gdb_ovn_northd=true
            ;;
        --gdb-ovn-ic)
            gdb_ovn_ic=true
            ;;
        --gdb-ovn-controller)
            gdb_ovn_controller=true
            ;;
        --gdb-ovn-controller-vtep)
            gdb_ovn_controller_vtep=true
            ;;
        --ddlog)
            ddlog=true
            ;;
        --no-ddlog-record | --no-record-ddlog)
            ddlog_record=false
            ;;
        --no-ovn-rbac)
            ovn_rbac=false
            ;;
        --n-northd*=*)
            n_northds=$optarg
            ;;
        --n-northd*)
            prev=n_northds
            ;;
        --n-ic*=*)
            n_ics=$optarg
            ;;
        --n-ic*)
            prev=n_ics_
            ;;
        --n-controller*=*)
            n_controllers=$optarg
            ;;
        --n-controller*)
            prev=n_controllers
            ;;
        --nbdb-se*=*)
            nbdb_servers=$optarg
            nbdb_model=clustered
            ;;
        --nbdb-se*)
            prev=nbdb_servers
            nbdb_model=clustered
            ;;
        --nbdb-m*=*)
            nbdb_model=$optarg
            ;;
        --nbdb-m*)
            prev=nbdb_model
            ;;
        --nbdb-so*=*)
            ovnnb_source=$optarg
            ;;
        --nbdb-so*)
            prev=ovnnb_source
            ;;
        --sbdb-se*=*)
            sbdb_servers=$optarg
            sbdb_model=clustered
            ;;
        --sbdb-se*)
            prev=sbdb_servers
            sbdb_model=clustered
            ;;
        --sbdb-m*=*)
            sbdb_model=$optarg
            ;;
        --sbdb-m*)
            prev=sbdb_model
            ;;
        --sbdb-so*=*)
            ovnsb_source=$optarg
            ;;
        --sbdb-so*)
            prev=ovnsb_source
            ;;
        --ovs-so*=*)
            ovs_source=$optarg
            ;;
        --ovs-so*)
            prev=ovs_source
            ;;
        --vtep-so*=*)
            vtep_source=$optarg
            ;;
        --vtep-so*)
            prev=vtep_source
            ;;
        --ic-nb-s*=*)
            ic_nb_servers=$optarg
            ic_nb_model=clustered
            ;;
        --ic-nb-s*)
            prev=ic_nb_servers
            ic_nb_model=clustered
            ;;
        --ic-nb-m*=*)
            ic_nb_model=$optarg
            ;;
        --ic-nb-m*)
            prev=ic_nb_model
            ;;
        --ic-sb-s*=*)
            ic_sb_servers=$optarg
            ic_sb_model=clustered
            ;;
        --ic-sb-s*)
            prev=ic_sb_servers
            ic_sb_model=clustered
            ;;
        --ic-sb-m*=*)
            ic_sb_model=$optarg
            ;;
        --ic-sb-m*)
            prev=ic_sb_model
            ;;
        -R|--gdb-run)
            gdb_vswitchd_ex=true
            gdb_ovsdb_ex=true
            gdb_ovn_northd_ex=true
            gdb_ovn_ic_ex=true
            gdb_ovn_controller_ex=true
            gdb_ovn_controller_vtep_ex=true
            ;;
        -*)
            echo "unrecognized option $option (use --help for help)" >&2
            exit 1
            ;;
        *)
            echo "$option: non-option arguments not supported (use --help for help)" >&2
            exit 1
            ;;
    esac
    shift
done

if $installed && $built; then
    echo "sorry, conflicting options (use --help for help)" >&2
    exit 1
elif $installed || $built; then
    :
elif test -e ovs/vswitchd/ovs-vswitchd; then
    built=:
    builddir=.
elif (ovs-vswitchd --version) >/dev/null 2>&1; then
    installed=:
else
    echo "can't find an OVS build or install (use --help for help)" >&2
    exit 1
fi

if $built; then
    if test ! -e "$builddir"/controller/ovn-controller; then
        echo "$builddir does not appear to be an OVN build directory" >&2
        exit 1
    fi
    builddir=`cd $builddir && pwd`

    # Find srcdir.
    case $srcdir in
        '')
            srcdir=$builddir
            if test ! -e "$srcdir"/README.rst; then
                srcdir=`cd $builddir/.. && pwd`
            fi
            ;;
        /*) ;;
        *) srcdir=`pwd`/$srcdir ;;
    esac
    schema=$ovssrcdir/vswitchd/vswitch.ovsschema
    if test ! -e "$schema"; then
        echo >&2 'source directory not found, please use --srcdir'
        exit 1
    fi
    : ${ovnnb_source:=$srcdir/ovn-nb.ovsschema}
    if test ! -e "$ovnnb_source"; then
        echo >&2 "OVN northbound database source $ovnnb_source not found, please check --srcdir or --ovnnb-source"
        exit 1
    fi
    : ${ovnsb_source:=$srcdir/ovn-sb.ovsschema}
    if test ! -e "$ovnsb_source"; then
        echo >&2 "OVN southbound database source $ovnsb_source not found, please check --srcdir or --ovnsb-source"
        exit 1
    fi
    ic_sb_schema=$srcdir/ovn-ic-sb.ovsschema
    if test ! -e "$ic_sb_schema"; then
        echo >&2 'source directory not found, please use --srcdir'
        exit 1
    fi
    ic_nb_schema=$srcdir/ovn-ic-nb.ovsschema
    if test ! -e "$ic_nb_schema"; then
        echo >&2 'source directory not found, please use --srcdir'
        exit 1
    fi
    vtep_schema=$ovssrcdir/vtep/vtep.ovsschema
    if test ! -e "$vtep_schema"; then
        echo >&2 'source directory not found, please use --srcdir'
        exit 1
    fi

    # Put built tools early in $PATH.
    if test ! -e $ovsbuilddir/vswitchd/ovs-vswitchd; then
        echo >&2 'build not found, please change set $builddir or change directory'
        exit 1
    fi
    PATH=$ovsbuilddir/ovsdb:$ovsbuilddir/vswitchd:$ovsbuilddir/utilities:$ovsbuilddir/vtep:$PATH
    PATH=$builddir/controller:$builddir/controller-vtep:$builddir/northd:$builddir/ic:$builddir/utilities:$PATH
    export PATH
else
    case $schema in
        '')
            for schema in \
                /usr/local/share/openvswitch/vswitch.ovsschema \
                /usr/share/openvswitch/vswitch.ovsschema \
                none; do
                if test -r $schema; then
                    break
                fi
            done
            ;;
        /*) ;;
        *) schema=`pwd`/$schema ;;
    esac
    if test ! -r "$schema"; then
        echo "can't find vswitch.ovsschema, please specify --schema" >&2
        exit 1
    fi
    echo "running with ovn is only supported from the build dir." >&2
    exit 1
fi

# Create sandbox.
rm -rf sandbox
mkdir sandbox
sandbox=`cd sandbox && pwd`

# Set up environment for OVS programs to sandbox themselves.
OVS_RUNDIR=$sandbox; export OVS_RUNDIR
OVN_RUNDIR=$sandbox; export OVN_RUNDIR
OVS_LOGDIR=$sandbox; export OVS_LOGDIR
OVS_DBDIR=$sandbox; export OVS_DBDIR
OVS_SYSCONFDIR=$sandbox; export OVS_SYSCONFDIR
PYTHONPATH=$ovssrcdir/python:$PYTHONPATH; export PYTHONPATH

if $built; then
    # Easy access to OVS manpages.
    (cd "$builddir" && ${MAKE-make} install-man install-man-rst mandir="$sandbox"/man)
    MANPATH=$sandbox/man:; export MANPATH
fi

# Ensure cleanup.
trap 'kill `cat "$sandbox"/*.pid`' 0 1 2 3 13 14 15

# Create database and start ovsdb-server.
touch "$sandbox"/.conf.db.~lock~
if test ! -e "$ovs_source"; then
    run ovsdb-tool create conf.db "$schema"
else
    run cp "$ovs_source" conf.db
    run ovsdb-tool convert conf.db "$schema"
fi
ovsdb_server_args=

if test ! -e "$vtep_source"; then
    run ovsdb-tool create vtep.db "$vtep_schema"
else
    run cp "$vtep_source" vtep.db
    run ovsdb-tool convert vtep.db "$vtep_schema"
fi
ovsdb_server_args="vtep.db conf.db"

if [ "$HAVE_OPENSSL" = yes ]; then
    OVS_PKI="run ovs-pki --dir=$sandbox/pki --log=$sandbox/ovs-pki.log"
    $OVS_PKI init
    $OVS_PKI req+sign ovnsb switch
    $OVS_PKI req+sign ovnnb switch
    for i in $(seq $n_controllers); do
        $OVS_PKI -u req+sign chassis-$i switch
    done
fi

rungdb $gdb_ovsdb $gdb_ovsdb_ex ovsdb-server --detach --no-chdir --pidfile -vconsole:off --log-file -vsyslog:off \
       --remote=punix:"$sandbox"/db.sock \
       --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
       $ovsdb_server_args

ovn_start_db() {
    local db=$1 model=$2 servers=$3 source=$4
    local DB=$(echo $db | tr a-z A-Z)

    local schema_name source_type
    if schema_name=$(ovsdb-tool schema-name "$source" 2>/dev/null); then
        source_type=schema
    elif schema_name=$(ovsdb-tool db-name "$source" 2>/dev/null); then
        source_type=database
    else
        echo "$source is not an OVSDB schema or database" >&2
        exit 1
    fi

    case $model in
        standalone | backup) ;;
        clustered)
            case $servers in
                [1-9] | [1-9][0-9]) ;;
                *) echo "${db}db servers must be between 1 and 99" >&2
                    exit 1
                    ;;
            esac
            ;;
        *)
            echo "unknown ${db}db model \"$model\"" >&2
            exit 1
            ;;
    esac

    ovn_start_ovsdb_server() {
        local i=$1; shift
        rungdb $gdb_ovsdb $gdb_ovsdb_ex ovsdb-server --detach --no-chdir \
                --pidfile=$db$i.pid -vconsole:off --log-file=$db$i.log \
                -vsyslog:off \
                --remote=db:$schema_name,${DB}_Global,connections \
                --private-key=db:$schema_name,SSL,private_key \
                --certificate=db:$schema_name,SSL,certificate \
                --ca-cert=db:$schema_name,SSL,ca_cert \
                --ssl-protocols=db:$schema_name,SSL,ssl_protocols \
                --ssl-ciphers=db:$schema_name,SSL,ssl_ciphers \
                --unixctl=${db}$i --remote=punix:$db$i.ovsdb ${db}$i.db "$@"
    }

    case $model in
        standalone)
            case $source_type in
                database)
                    run cp "$source" ${db}1.db
                    run ovsdb-tool convert ${db}1.db \
                        $srcdir/ovn-${db}.ovsschema
                ;;
                schema) run ovsdb-tool create ${db}1.db "$source" ;;
            esac
            ovn_start_ovsdb_server 1
            remote=unix:${db}1.ovsdb
            ;;
        backup)
            for i in 1 2; do
                case $source_type in
                    database)
                        run cp "$source" $db$i.db
                        run ovsdb-tool convert $db$i.db \
                            $srcdir/ovn-${db}.ovsschema
                    ;;
                    schema) run ovsdb-tool create $db$i.db "$source" ;;
                esac
            done
            ovn_start_ovsdb_server 1
            ovn_start_ovsdb_server 2 --sync-from=unix:${db}1.ovsdb
            remote=unix:${db}1.ovsdb
            backup_note="$backup_note
The backup server of OVN $DB can be accessed by:
* ovn-${db}ctl --db=unix:`pwd`/sandbox/${db}2.ovsdb
* ovs-appctl -t `pwd`/sandbox/${db}2
The backup database file is sandbox/${db}2.db
"
            ;;
        clustered)
            for i in $(seq $servers); do
                if test $i = 1; then
                    run ovsdb-tool create-cluster ${db}1.db "$source" unix:${db}1.raft;
                else
                    run ovsdb-tool join-cluster $db$i.db $schema_name unix:$db$i.raft unix:${db}1.raft
                fi
                ovn_start_ovsdb_server $i
            done
            remote=unix:${db}1.ovsdb
            for i in `seq 2 $servers`; do
                remote=$remote,unix:$db$i.ovsdb
            done
            for i in $(seq $servers); do
                run ovsdb-client wait unix:$db$i.ovsdb $schema_name connected
            done
            ;;
    esac
    eval OVN_${DB}_DB=\$remote
    eval export OVN_${DB}_DB
}

backup_note=
ovn_start_db nb "$nbdb_model" "$nbdb_servers" "$ovnnb_source"
ovn_start_db sb "$sbdb_model" "$sbdb_servers" "$ovnsb_source"
ovn_start_db ic_nb "$ic_nb_model" "$ic_nb_servers" "$ic_nb_schema"
ovn_start_db ic_sb "$ic_sb_model" "$ic_sb_servers" "$ic_sb_schema"

#Add a small delay to allow ovsdb-server to launch.
sleep 0.1

#Wait for ovsdb-server to finish launching.
if test ! -e "$sandbox"/db.sock; then
    printf "Waiting for ovsdb-server to start..."
    while test ! -e "$sandbox"/db.sock; do
        sleep 1;
    done
    echo "  Done"
fi

# Initialize database.
run ovs-vsctl --no-wait -- init

# Start ovs-vswitchd.
rungdb $gdb_vswitchd $gdb_vswitchd_ex ovs-vswitchd --detach --no-chdir --pidfile -vconsole:off --log-file -vsyslog:off \
    --enable-dummy=$dummy -vvconn -vnetdev_dummy

run ovn-nbctl init
run ovn-sbctl init
run ovn-ic-nbctl init
run ovn-ic-sbctl init
run ovn-nbctl set NB_Global . name=az-1

run ovs-vsctl set open . external-ids:system-id=chassis-1
run ovs-vsctl set open . external-ids:hostname=sandbox
run ovs-vsctl set open . external-ids:ovn-encap-type=geneve
run ovs-vsctl set open . external-ids:ovn-encap-ip=127.0.0.1

if [ "$HAVE_OPENSSL" = yes ]; then
    run ovn-nbctl set-ssl $sandbox/ovnnb-privkey.pem  $sandbox/ovnnb-cert.pem $sandbox/pki/switchca/cacert.pem
    run ovn-nbctl set-connection pssl:6641
    run ovn-sbctl set-ssl $sandbox/ovnsb-privkey.pem  $sandbox/ovnsb-cert.pem $sandbox/pki/switchca/cacert.pem
    if $ovn_rbac; then
        run ovn-sbctl set-connection role=ovn-controller pssl:6642
    else
        run ovn-sbctl set-connection pssl:6642
    fi
    run ovs-vsctl set open . external-ids:ovn-remote=ssl:127.0.0.1:6642
    OVN_CTRLR_PKI="-p $sandbox/chassis-1-privkey.pem -c $sandbox/chassis-1-cert.pem -C $sandbox/pki/switchca/cacert.pem"
else
    run ovs-vsctl set open . external-ids:ovn-remote=$OVN_SB_DB
    OVN_CTRLR_PKI=""
fi
for i in $(seq $n_ics); do
    if [ $i -eq 1 ]; then inst=""; else inst=$i; fi
    rungdb $gdb_ovn_ic $gdb_ovn_ic_ex ovn-ic --detach \
            --no-chdir --pidfile=ovn-ic${inst}.pid -vconsole:off \
            --log-file=ovn-ic${inst}.log -vsyslog:off \
            --ovnsb-db="$OVN_SB_DB" --ovnnb-db="$OVN_NB_DB" \
            --ic-sb-db="$OVN_IC_SB_DB" --ic-nb-db="$OVN_IC_NB_DB"
done

northd_args=
if $ddlog; then
    OVN_NORTHD=ovn-northd-ddlog
else
    OVN_NORTHD=ovn-northd
fi

for i in $(seq $n_northds); do
    if [ $i -eq 1 ]; then inst=""; else inst=$i; fi
    if $ddlog && $ddlog_record; then
        northd_args=--ddlog-record=replay$inst.txt
    fi
    rungdb $gdb_ovn_northd $gdb_ovn_northd_ex $OVN_NORTHD --detach \
            --no-chdir --pidfile=$OVN_NORTHD$inst.pid -vconsole:off \
            --log-file=$OVN_NORTHD$inst.log -vsyslog:off \
            --ovnsb-db="$OVN_SB_DB" --ovnnb-db="$OVN_NB_DB" $northd_args
done
for i in $(seq $n_controllers); do
    if [ $i -eq 1 ]; then inst=""; else inst=$i; fi
    rungdb $gdb_ovn_controller $gdb_ovn_controller_ex ovn-controller \
            $OVN_CTRLR_PKI --detach --no-chdir -vsyslog:off \
            --log-file=ovn-controller${inst}.log \
            --pidfile=ovn-controller${inst}.pid -vconsole:off
done
rungdb $gdb_ovn_controller_vtep $gdb_ovn_controller_vtep_ex \
    ovn-controller-vtep --detach --no-chdir --pidfile -vconsole:off \
    $OVN_CTRLR_PKI --log-file -vsyslog:off \
    --ovnsb-db="$OVN_SB_DB"

cat <<EOF



----------------------------------------------------------------------
You are running in a dummy Open vSwitch and OVN environment.  You can
use ovn-nbctl, ovn-sbctl, ovs-vsctl, ovs-ofctl, ovs-appctl, and other
tools to work with the dummy runtimes.
$backup_note
EOF
cat <<EOF
Log files, pidfiles, and the configuration database are in the
"sandbox" subdirectory.

Exit the shell to kill the running daemons.
EOF

status=0; $SHELL || status=$?

cat <<EOF
----------------------------------------------------------------------



EOF

exit $status
