tutorial/ovs-sandbox

   1 #! /bin/sh
   2 #
   3 # Copyright (c) 2013, 2015 Nicira, Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at:
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 set -e
  18
  19 run() {
  20     (cd "$sandbox" && "$@") || exit 1
  21 }
  22
  23 run_xterm() {
  24     title=$1;
  25     shift
  26     run xterm -T "$title" -e "$@"  &
  27 }
  28
  29 rungdb() {
  30     under_gdb=$1
  31     gdb_run=$2
  32     shift
  33     shift
  34
  35     # Remove the --detach and to put the process under gdb control.
  36     # Also remove --vconsole:off to allow error message to show up
  37     # on the console.
  38     # Use "DISPLAY" variable to determine out if X is supported
  39     if $under_gdb && [ "$DISPLAY" ]; then
  40         args=`echo $@ |sed s/--detach//g | sed s/--vconsole:off//g`
  41         xterm_title=$1
  42
  43         gdb_cmd=""
  44         if $gdb_run; then
  45             gdb_cmd="-ex run"
  46         fi
  47
  48         run_xterm $xterm_title gdb $gdb_cmd --args $args
  49     else
  50         run $@
  51     fi
  52 }
  53
  54 gdb_vswitchd=false
  55 gdb_ovsdb=false
  56 gdb_vswitchd_ex=false
  57 gdb_ovsdb_ex=false
  58 builddir=
  59 srcdir=
  60 schema=
  61 installed=false
  62 built=false
  63
  64 for option; do
  65     # This option-parsing mechanism borrowed from a Autoconf-generated
  66     # configure script under the following license:
  67
  68     # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
  69     # 2002, 2003, 2004, 2005, 2006, 2009, 2013 Free Software Foundation, Inc.
  70     # This configure script is free software; the Free Software Foundation
  71     # gives unlimited permission to copy, distribute and modify it.
  72
  73     # If the previous option needs an argument, assign it.
  74     if test -n "$prev"; then
  75         eval $prev=\$option
  76         prev=
  77         continue
  78     fi
  79     case $option in
  80         *=*) optarg=`expr "X$option" : '[^=]*=\(.*\)'` ;;
  81         *) optarg=yes ;;
  82     esac
  83
  84     case $dashdash$option in
  85         --)
  86             dashdash=yes ;;
  87         -h|--help)
  88             cat <<EOF
  89 ovs-sandbox, for starting a sandboxed dummy Open vSwitch environment
  90 usage: $0 [OPTION...]
  91
  92 If you run ovs-sandbox from an OVS build directory, it uses the OVS that
  93 you built.  Otherwise, if you have an installed Open vSwitch, it uses
  94 the installed version.
  95
  96 These options force ovs-sandbox to use a particular OVS build:
  97   -b, --builddir=DIR   specify Open vSwitch build directory
  98   -s, --srcdir=DIR     specify Open vSwitch source directory
  99 These options force ovs-sandbox to use an installed Open vSwitch:
 100   -i, --installed      use installed Open vSwitch
 101   -g, --gdb-vswitchd   run ovs-vswitchd under gdb
 102   -d, --gdb-ovsdb      run ovsdb-server under gdb
 103   -S, --schema=FILE    use FILE as vswitch.ovsschema
 104
 105 Other options:
 106   -h, --help           Print this usage message.
 107 EOF
 108             exit 0
 109             ;;
 110
 111         --b*=*)
 112             builddir=$optarg
 113             built=:
 114             ;;
 115         -b|--b*)
 116             prev=builddir
 117             built=:
 118             ;;
 119         --sr*=*)
 120             srcdir=$optarg
 121             built=false
 122             ;;
 123         -s|--sr*)
 124             prev=srcdir
 125             built=false
 126             ;;
 127         -i|--installed)
 128             installed=:
 129             ;;
 130         --sc*=*)
 131             schema=$optarg
 132             installed=:
 133             ;;
 134         -S|--sc*)
 135             prev=schema
 136             installed=:
 137             ;;
 138         -g|--gdb-v*)
 139             gdb_vswitchd=true
 140             gdb_vswitchd_ex=false
 141             ;;
 142         -e|--gdb-ex-v*)
 143             gdb_vswitchd=true
 144             gdb_vswitchd_ex=true
 145             ;;
 146         -d|--gdb-o*)
 147             gdb_ovsdb=true
 148             gdb_ovsdb_ex=false
 149             ;;
 150         -r|--gdb-ex-o*)
 151             gdb_ovsdb=true
 152             gdb_ovsdb_ex=true
 153             ;;
 154         -*)
 155             echo "unrecognized option $option (use --help for help)" >&2
 156             exit 1
 157             ;;
 158         *)
 159             echo "$option: non-option arguments not supported (use --help for help)" >&2
 160             exit 1
 161             ;;
 162     esac
 163     shift
 164 done
 165
 166 if $installed && $built; then
 167     echo "sorry, conflicting options (use --help for help)" >&2
 168     exit 1
 169 elif $installed || $built; then
 170     :
 171 elif test -e vswitchd/ovs-vswitchd; then
 172     built=:
 173     builddir=.
 174 elif (ovs-vswitchd --version) >/dev/null 2>&1; then
 175     installed=:
 176 else
 177     echo "can't find an OVS build or install (use --help for help)" >&2
 178     exit 1
 179 fi
 180
 181 if $built; then
 182     if test ! -e "$builddir"/vswitchd/ovs-vswitchd; then
 183         echo "$builddir does not appear to be an OVS build directory" >&2
 184         exit 1
 185     fi
 186     builddir=`cd $builddir && pwd`
 187
 188     # Find srcdir.
 189     case $srcdir in
 190         '')
 191             srcdir=$builddir
 192             if test ! -e "$srcdir"/WHY-OVS.md; then
 193                 srcdir=`cd $builddir/.. && pwd`
 194             fi
 195             ;;
 196         /*) ;;
 197         *) srcdir=`pwd`/$srcdir ;;
 198     esac
 199     schema=$srcdir/vswitchd/vswitch.ovsschema
 200     if test ! -e "$schema"; then
 201         echo >&2 'source directory not found, please use --srcdir'
 202         exit 1
 203     fi
 204
 205     # Put built tools early in $PATH.
 206     if test ! -e $builddir/vswitchd/ovs-vswitchd; then
 207         echo >&2 'build not found, please change set $builddir or change directory'
 208         exit 1
 209     fi
 210     PATH=$builddir/ovsdb:$builddir/vswitchd:$builddir/utilities:$PATH
 211     export PATH
 212 else
 213     case $schema in
 214         '')
 215             for schema in \
 216                 /usr/local/share/openvswitch/vswitch.ovsschema \
 217                 /usr/share/openvswitch/vswitch.ovsschema \
 218                 none; do
 219                 if test -r $schema; then
 220                     break
 221                 fi
 222             done
 223             ;;
 224         /*) ;;
 225         *) schema=`pwd`/$schema ;;
 226     esac
 227     if test ! -r "$schema"; then
 228         echo "can't find vswitch.ovsschema, please specify --schema" >&2
 229         exit 1
 230     fi
 231 fi
 232
 233 # Create sandbox.
 234 rm -rf sandbox
 235 mkdir sandbox
 236 sandbox=`cd sandbox && pwd`
 237
 238 # Set up environment for OVS programs to sandbox themselves.
 239 OVS_RUNDIR=$sandbox; export OVS_RUNDIR
 240 OVS_LOGDIR=$sandbox; export OVS_LOGDIR
 241 OVS_DBDIR=$sandbox; export OVS_DBDIR
 242 OVS_SYSCONFDIR=$sandbox; export OVS_SYSCONFDIR
 243
 244 if $built; then
 245     # Easy access to OVS manpages.
 246     (cd "$builddir" && ${MAKE} install-man mandir="$sandbox"/man)
 247     MANPATH=$sandbox/man:; export MANPATH
 248 fi
 249
 250 # Ensure cleanup.
 251 trap 'kill `cat "$sandbox"/*.pid`' 0 1 2 3 13 14 15
 252
 253 # Create database and start ovsdb-server.
 254 touch "$sandbox"/.conf.db.~lock~
 255 run ovsdb-tool create conf.db "$schema"
 256 rungdb $gdb_ovsdb $gdb_ovsdb_ex ovsdb-server --detach --no-chdir --pidfile -vconsole:off --log-file \
 257     --remote=punix:"$sandbox"/db.sock
 258
 259 #Add a small delay to allow ovsdb-server to launch.
 260 sleep 0.1
 261
 262 #Wait for ovsdb-server to finish launching.
 263 if test ! -e "$sandbox"/db.sock; then
 264     echo -n "Waiting for ovsdb-server to start..."
 265     while test ! -e "$sandbox"/db.sock; do
 266         sleep 1;
 267     done
 268     echo "  Done"
 269 fi
 270
 271 # Initialize database.
 272 run ovs-vsctl --no-wait -- init
 273
 274 # Start ovs-vswitchd.
 275 rungdb $gdb_vswitchd $gdb_vswitchd_ex ovs-vswitchd --detach --no-chdir --pidfile -vconsole:off --log-file \
 276     --enable-dummy=override -vvconn -vnetdev_dummy
 277
 278 cat <<EOF
 279
 280
 281
 282 ----------------------------------------------------------------------
 283 You are running in a dummy Open vSwitch environment.  You can use
 284 ovs-vsctl, ovs-ofctl, ovs-appctl, and other tools to work with the
 285 dummy switch.
 286
 287 Log files, pidfiles, and the configuration database are in the
 288 "sandbox" subdirectory.
 289
 290 Exit the shell to kill the running daemons.
 291 EOF
 292
 293 status=0; $SHELL || status=$?
 294
 295 cat <<EOF
 296 ----------------------------------------------------------------------
 297
 298
 299
 300 EOF
 301
 302 exit $status