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     shift
  32     # Remove the --detach and to put the process under gdb control.
  33     # Also remove --vconsole:off to allow error message to show up
  34     # on the console.
  35     # Use "DISPLAY" variable to determine out if X is supported
  36     if $under_gdb && [ "$DISPLAY" ]; then
  37         args=`echo $@ |sed s/--detach//g | sed s/--vconsole:off//g`
  38         xterm_title=$1
  39         run_xterm $xterm_title gdb -ex run --args $args
  40     else
  41         run $@
  42     fi
  43 }
  44
  45 gdb_vswitchd=false
  46 gdb_ovsdb=false
  47 builddir=
  48 srcdir=
  49 schema=
  50 installed=false
  51 built=false
  52
  53 for option; do
  54     # This option-parsing mechanism borrowed from a Autoconf-generated
  55     # configure script under the following license:
  56
  57     # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
  58     # 2002, 2003, 2004, 2005, 2006, 2009, 2013 Free Software Foundation, Inc.
  59     # This configure script is free software; the Free Software Foundation
  60     # gives unlimited permission to copy, distribute and modify it.
  61
  62     # If the previous option needs an argument, assign it.
  63     if test -n "$prev"; then
  64         eval $prev=\$option
  65         prev=
  66         continue
  67     fi
  68     case $option in
  69         *=*) optarg=`expr "X$option" : '[^=]*=\(.*\)'` ;;
  70         *) optarg=yes ;;
  71     esac
  72
  73     case $dashdash$option in
  74         --)
  75             dashdash=yes ;;
  76         -h|--help)
  77             cat <<EOF
  78 ovs-sandbox, for starting a sandboxed dummy Open vSwitch environment
  79 usage: $0 [OPTION...]
  80
  81 If you run ovs-sandbox from an OVS build directory, it uses the OVS that
  82 you built.  Otherwise, if you have an installed Open vSwitch, it uses
  83 the installed version.
  84
  85 These options force ovs-sandbox to use a particular OVS build:
  86   -b, --builddir=DIR   specify Open vSwitch build directory
  87   -s, --srcdir=DIR     specify Open vSwitch source directory
  88 These options force ovs-sandbox to use an installed Open vSwitch:
  89   -i, --installed      use installed Open vSwitch
  90   -g, --gdb-vswitchd   run ovs-vswitchd under gdb
  91   -d, --gdb-ovsdb      run ovsdb-server under gdb
  92   -S, --schema=FILE    use FILE as vswitch.ovsschema
  93
  94 Other options:
  95   -h, --help           Print this usage message.
  96 EOF
  97             exit 0
  98             ;;
  99
 100         --b*=*)
 101             builddir=$optarg
 102             built=:
 103             ;;
 104         -b|--b*)
 105             prev=builddir
 106             built=:
 107             ;;
 108         --sr*=*)
 109             srcdir=$optarg
 110             built=false
 111             ;;
 112         -s|--sr*)
 113             prev=srcdir
 114             built=false
 115             ;;
 116         -i|--installed)
 117             installed=:
 118             ;;
 119         --sc*=*)
 120             schema=$optarg
 121             installed=:
 122             ;;
 123         -S|--sc*)
 124             prev=schema
 125             installed=:
 126             ;;
 127         -g|--gdb-v*)
 128             gdb_vswitchd=true
 129             ;;
 130         -d|--gdb-o*)
 131             gdb_ovsdb=true
 132             ;;
 133         -*)
 134             echo "unrecognized option $option (use --help for help)" >&2
 135             exit 1
 136             ;;
 137         *)
 138             echo "$option: non-option arguments not supported (use --help for help)" >&2
 139             exit 1
 140             ;;
 141     esac
 142     shift
 143 done
 144
 145 if $installed && $built; then
 146     echo "sorry, conflicting options (use --help for help)" >&2
 147     exit 1
 148 elif $installed || $built; then
 149     :
 150 elif test -e vswitchd/ovs-vswitchd; then
 151     built=:
 152     builddir=.
 153 elif (ovs-vswitchd --version) >/dev/null 2>&1; then
 154     installed=:
 155 else
 156     echo "can't find an OVS build or install (use --help for help)" >&2
 157     exit 1
 158 fi
 159
 160 if $built; then
 161     if test ! -e "$builddir"/vswitchd/ovs-vswitchd; then
 162         echo "$builddir does not appear to be an OVS build directory" >&2
 163         exit 1
 164     fi
 165     builddir=`cd $builddir && pwd`
 166
 167     # Find srcdir.
 168     case $srcdir in
 169         '')
 170             srcdir=$builddir
 171             if test ! -e "$srcdir"/WHY-OVS.md; then
 172                 srcdir=`cd $builddir/.. && pwd`
 173             fi
 174             ;;
 175         /*) ;;
 176         *) srcdir=`pwd`/$srcdir ;;
 177     esac
 178     schema=$srcdir/vswitchd/vswitch.ovsschema
 179     if test ! -e "$schema"; then
 180         echo >&2 'source directory not found, please use --srcdir'
 181         exit 1
 182     fi
 183
 184     # Put built tools early in $PATH.
 185     if test ! -e $builddir/vswitchd/ovs-vswitchd; then
 186         echo >&2 'build not found, please change set $builddir or change directory'
 187         exit 1
 188     fi
 189     PATH=$builddir/ovsdb:$builddir/vswitchd:$builddir/utilities:$PATH
 190     export PATH
 191 else
 192     case $schema in
 193         '')
 194             for schema in \
 195                 /usr/local/share/openvswitch/vswitch.ovsschema \
 196                 /usr/share/openvswitch/vswitch.ovsschema \
 197                 none; do
 198                 if test -r $schema; then
 199                     break
 200                 fi
 201             done
 202             ;;
 203         /*) ;;
 204         *) schema=`pwd`/$schema ;;
 205     esac
 206     if test ! -r "$schema"; then
 207         echo "can't find vswitch.ovsschema, please specify --schema" >&2
 208         exit 1
 209     fi
 210 fi
 211
 212 # Create sandbox.
 213 rm -rf sandbox
 214 mkdir sandbox
 215 sandbox=`cd sandbox && pwd`
 216
 217 # Set up environment for OVS programs to sandbox themselves.
 218 OVS_RUNDIR=$sandbox; export OVS_RUNDIR
 219 OVS_LOGDIR=$sandbox; export OVS_LOGDIR
 220 OVS_DBDIR=$sandbox; export OVS_DBDIR
 221 OVS_SYSCONFDIR=$sandbox; export OVS_SYSCONFDIR
 222
 223 if $built; then
 224     # Easy access to OVS manpages.
 225     (cd "$builddir" && ${MAKE} install-man mandir="$sandbox"/man)
 226     MANPATH=$sandbox/man:; export MANPATH
 227 fi
 228
 229 # Ensure cleanup.
 230 trap 'kill `cat "$sandbox"/*.pid`' 0 1 2 3 13 14 15
 231
 232 # Create database and start ovsdb-server.
 233 touch "$sandbox"/.conf.db.~lock~
 234 run ovsdb-tool create conf.db "$schema"
 235 rungdb $gdb_ovsdb ovsdb-server --detach --no-chdir --pidfile -vconsole:off --log-file \
 236     --remote=punix:"$sandbox"/db.sock
 237
 238 #Add a small delay to allow ovsdb-server to launch.
 239 sleep 0.1
 240
 241 #Wait for ovsdb-server to finish launching.
 242 if test ! -e "$sandbox"/db.sock; then
 243     echo -n "Waiting for ovsdb-server to start..."
 244     while test ! -e "$sandbox"/db.sock; do
 245         sleep 1;
 246     done
 247     echo "  Done"
 248 fi
 249
 250 # Initialize database.
 251 run ovs-vsctl --no-wait -- init
 252
 253 # Start ovs-vswitchd.
 254 rungdb $gdb_vswitchd ovs-vswitchd --detach --no-chdir --pidfile -vconsole:off --log-file \
 255     --enable-dummy=override -vvconn -vnetdev_dummy
 256
 257 cat <<EOF
 258
 259
 260
 261 ----------------------------------------------------------------------
 262 You are running in a dummy Open vSwitch environment.  You can use
 263 ovs-vsctl, ovs-ofctl, ovs-appctl, and other tools to work with the
 264 dummy switch.
 265
 266 Log files, pidfiles, and the configuration database are in the
 267 "sandbox" subdirectory.
 268
 269 Exit the shell to kill the running daemons.
 270 EOF
 271
 272 status=0; $SHELL || status=$?
 273
 274 cat <<EOF
 275 ----------------------------------------------------------------------
 276
 277
 278
 279 EOF
 280
 281 exit $status