| 1 | #!/usr/bin/perl |
|---|
| 2 | |
|---|
| 3 | use strict; |
|---|
| 4 | |
|---|
| 5 | use Getopt::Std; |
|---|
| 6 | use IO::File; |
|---|
| 7 | use IO::Dir; |
|---|
| 8 | use IO::Pipe; |
|---|
| 9 | use File::Copy; |
|---|
| 10 | |
|---|
| 11 | my @scripts = ("federate.sh", "smbmount.pl", "make_hosts", "fed-tun.pl"); |
|---|
| 12 | my $local_script_dir = "."; |
|---|
| 13 | my($pid, $gid); # Process and group IDs for calling parse.tcl |
|---|
| 14 | my $splitter_config; # Configuration file |
|---|
| 15 | my $debug; # True if thecalled in debug mode |
|---|
| 16 | my $verbose; # True for extra progress reports |
|---|
| 17 | my $startem; # If true, start the sub-experiments |
|---|
| 18 | my $eid; # Experiment ID |
|---|
| 19 | my $tcl; # The experiment description (topology file) |
|---|
| 20 | my $master; # Master testbed |
|---|
| 21 | my $tmpdir; # tmp files |
|---|
| 22 | my $tb_config; # testbed configurations |
|---|
| 23 | my $smb_share; # Share to mount from the master |
|---|
| 24 | my $project_user; # User to mount project dirs as |
|---|
| 25 | my($gw_pubkey, $gw_pubkey_base);# Connector pubkey (full path & basename) |
|---|
| 26 | my($gw_secretkey, $gw_secretkey_base);# Connector secret key (full path & |
|---|
| 27 | # basename) |
|---|
| 28 | my $tcl_splitter; # tcl program to split experiments |
|---|
| 29 | # (changed during devel) |
|---|
| 30 | my $tclsh; # tclsh to call directly (changed during devel) |
|---|
| 31 | my $muxmax; # Maximum number of links/lans over 1 gw pair |
|---|
| 32 | my @tarfiles; # Tarfiles in use by this experiment |
|---|
| 33 | my @rpms; # Rpms in use by this experiment |
|---|
| 34 | my $timeout; # The timeout to use for experiment swap ins |
|---|
| 35 | my %opts; # Parsed options |
|---|
| 36 | |
|---|
| 37 | my $tbparams = {}; # Map of the per-testbed parameters from the |
|---|
| 38 | # testbeds file. It is a reference to a hash |
|---|
| 39 | # of hashes (because it's passed around a bunch |
|---|
| 40 | # and it's nicer to have one access pattern |
|---|
| 41 | # throughout the script, in the main loop and |
|---|
| 42 | # the subroutines). That access is exemplified |
|---|
| 43 | # by $tbparams->{'deter'}->{'domain'} which is |
|---|
| 44 | # the domain parameter of the DETER testbed. |
|---|
| 45 | my $fail_soft; # Do not swap failed sub-experiments out |
|---|
| 46 | my $max_children=1; # Maximum number of simultaneous swap-ins |
|---|
| 47 | |
|---|
| 48 | # Parse the config file. The format is a colon-separated parameter name |
|---|
| 49 | # followed by the value of that parameter to the end of the line. This parses |
|---|
| 50 | # that format and puts the parameters into the referenced hash. Parameter |
|---|
| 51 | # names are mapped to lower case, parameter values are unchanged. Returns 0 on |
|---|
| 52 | # failure (e.g. file open) and 1 on success. |
|---|
| 53 | sub parse_config { |
|---|
| 54 | my($file, $href) = @_; |
|---|
| 55 | my $fh = new IO::File($file); |
|---|
| 56 | |
|---|
| 57 | unless ($fh) { |
|---|
| 58 | warn "Can't open $file: $!\n"; |
|---|
| 59 | return 0; |
|---|
| 60 | } |
|---|
| 61 | |
|---|
| 62 | while (<$fh>) { |
|---|
| 63 | next if /^\s*#/ || /^\s*$/; # Skip comments & blanks |
|---|
| 64 | chomp; |
|---|
| 65 | /^([^:]+):\s*(.*)/ && do { |
|---|
| 66 | my $key = $1; |
|---|
| 67 | |
|---|
| 68 | $key =~ tr/A-Z/a-z/; |
|---|
| 69 | $href->{$key} = $2; |
|---|
| 70 | next; |
|---|
| 71 | }; |
|---|
| 72 | warn "Unparasble line in $file: $_\n"; |
|---|
| 73 | } |
|---|
| 74 | $fh->close(); # It will close when it goes out of scope, but... |
|---|
| 75 | return 1; |
|---|
| 76 | } |
|---|
| 77 | |
|---|
| 78 | # Parse an easier-to-read testbeds file (the original was comma-separated |
|---|
| 79 | # unadorned strings). The format is a testbed scope as [testbed] followed by |
|---|
| 80 | # the colon-separated attribute-value pairs for the testbed. Right now these |
|---|
| 81 | # go into a set of global hashes indexed by testbed, but that should probably |
|---|
| 82 | # change. |
|---|
| 83 | |
|---|
| 84 | sub parse_testbeds { |
|---|
| 85 | my($file, $tbparams) = @_; # Testbeds file and parameter hash |
|---|
| 86 | my $fh = new IO::File($file); # Testbeds filehandle |
|---|
| 87 | my $tb; # Current testbed |
|---|
| 88 | # Convert attribute in the file to tbparams hash key |
|---|
| 89 | my %attr_to_hash = ( |
|---|
| 90 | "opsnode" => "host", |
|---|
| 91 | "user" => "user", |
|---|
| 92 | "domain" => "domain", |
|---|
| 93 | "project" => "project", |
|---|
| 94 | "connectortype" => "gwtype", |
|---|
| 95 | "slavenodestartcmd" => "expstart", |
|---|
| 96 | "slaveconnectorstartcmd" => "gwstart", |
|---|
| 97 | "masternodestartcmd" => "mexpstart", |
|---|
| 98 | "masterconnectorstartcmd" => "mgwstart", |
|---|
| 99 | "connectorimage" => "gwimage", |
|---|
| 100 | "fileserver" => "fs", |
|---|
| 101 | "boss" => "boss", |
|---|
| 102 | "tunnelcfg" => "tun" |
|---|
| 103 | ); |
|---|
| 104 | |
|---|
| 105 | |
|---|
| 106 | unless ($fh) { |
|---|
| 107 | warn "Can't open $file: $!\n"; |
|---|
| 108 | return 0; |
|---|
| 109 | } |
|---|
| 110 | |
|---|
| 111 | while (<$fh>) { |
|---|
| 112 | next if /^\s*#/ || /^\s*$/; # Skip comments & blanks |
|---|
| 113 | chomp; |
|---|
| 114 | /^\s*\[(.*)\]/ && do { |
|---|
| 115 | $tb = $1; |
|---|
| 116 | $tbparams->{$tb} = {} unless $tbparams->{$tb}; |
|---|
| 117 | next; |
|---|
| 118 | }; |
|---|
| 119 | |
|---|
| 120 | /^([^:]+):\s*(.*)/ && do { |
|---|
| 121 | unless ($tb) { |
|---|
| 122 | warn "Ignored attribute definition before testbed " . |
|---|
| 123 | "defined in $file: $_\n"; |
|---|
| 124 | next; |
|---|
| 125 | } |
|---|
| 126 | my $key = $1; |
|---|
| 127 | $key =~ tr/A-Z/a-z/; |
|---|
| 128 | my $var = $attr_to_hash{$key}; |
|---|
| 129 | |
|---|
| 130 | if ($var) { $tbparams->{$tb}->{$var} = $2; } |
|---|
| 131 | else { warn "Unknown keyword $key in $file\n"; } |
|---|
| 132 | |
|---|
| 133 | next; |
|---|
| 134 | }; |
|---|
| 135 | warn "Unparasble line in $file: $_\n"; |
|---|
| 136 | } |
|---|
| 137 | $fh->close(); # It will close when it goes out of scope, but... |
|---|
| 138 | return 1; |
|---|
| 139 | } |
|---|
| 140 | |
|---|
| 141 | |
|---|
| 142 | # use scp to transfer a file, reporting true if successful and false otherwise. |
|---|
| 143 | # Parameters are the local file name, the ssh host destination (either hostname |
|---|
| 144 | # oe user@host), and an optional destination file name or directory. If no |
|---|
| 145 | # destination is given, the file is transferred to the given user's home |
|---|
| 146 | # directory. If only a machine is given in the ssh host destination, the |
|---|
| 147 | # current user is used. |
|---|
| 148 | sub scp_file { |
|---|
| 149 | my($file, $user, $host, $dest) = @_; |
|---|
| 150 | |
|---|
| 151 | # XXX system with a relative pathname is sort of gross |
|---|
| 152 | system("scp $file $user\@$host:$dest"); |
|---|
| 153 | if ($?) { |
|---|
| 154 | warn "scp failed $?\n"; |
|---|
| 155 | return 0; |
|---|
| 156 | } |
|---|
| 157 | else { return 1; } |
|---|
| 158 | } |
|---|
| 159 | |
|---|
| 160 | # use ssh to execute the given command on the machine (and as the user) in |
|---|
| 161 | # $where. Parameters are the ssh destination directive ($where) and the |
|---|
| 162 | # command to execute, and a prefix to be placed on a message generated if the |
|---|
| 163 | # command fails. On failure print a warning if a warning prefix was given and |
|---|
| 164 | # return false. If timeout is given fork a process and set an alarm of that |
|---|
| 165 | # many seconds. Timeouts also return 0; |
|---|
| 166 | sub ssh_cmd { |
|---|
| 167 | my($user, $host, $cmd, $wname, $timeout) = @_; |
|---|
| 168 | my $pid; # Child pid |
|---|
| 169 | |
|---|
| 170 | $timeout = 0 unless $timeout; # Force default timeout |
|---|
| 171 | |
|---|
| 172 | if ( $pid = fork () ) { |
|---|
| 173 | # Parent process |
|---|
| 174 | # The eval acts as a signal catcher. If the alarm goes off inside |
|---|
| 175 | # the eval, the die will put "alarm\n" into $@, otherwise the |
|---|
| 176 | # return value of the execution in the child process will be used. |
|---|
| 177 | my $rv = eval { |
|---|
| 178 | local $SIG{'ALRM'} = sub{ die "alarm\n"; }; |
|---|
| 179 | my $rv; |
|---|
| 180 | |
|---|
| 181 | alarm $timeout; |
|---|
| 182 | $rv = waitpid($pid, 0); |
|---|
| 183 | alarm 0; |
|---|
| 184 | $rv; |
|---|
| 185 | }; |
|---|
| 186 | |
|---|
| 187 | # If the eval succeeded, $@ will be null and we can use $rv, which |
|---|
| 188 | # is the return code from the subprocess. If the eval timed out, |
|---|
| 189 | # print a warning and assume the best. |
|---|
| 190 | if ($@ eq "alarm\n" ) { |
|---|
| 191 | warn "$wname timed out - pid $pid still live\n"; |
|---|
| 192 | return 1; |
|---|
| 193 | } |
|---|
| 194 | else { |
|---|
| 195 | return $rv; |
|---|
| 196 | } |
|---|
| 197 | } |
|---|
| 198 | else { |
|---|
| 199 | # Child process |
|---|
| 200 | exec("ssh $user\@$host $cmd"); |
|---|
| 201 | exit 0; |
|---|
| 202 | } |
|---|
| 203 | } |
|---|
| 204 | |
|---|
| 205 | # Ship local copies of the federation scripts out to the given host. If any of |
|---|
| 206 | # the script transfers fails, return 0. The scripts to transfer are from the |
|---|
| 207 | # global @scripts and are found locally in $local_script_dir (another global). |
|---|
| 208 | sub ship_scripts { |
|---|
| 209 | my($host, $user, $dest_dir) = @_; # Where, who, where remotely |
|---|
| 210 | my $s; |
|---|
| 211 | |
|---|
| 212 | &ssh_cmd($user, $host, "mkdir -p $dest_dir"); |
|---|
| 213 | for $s (@scripts) { |
|---|
| 214 | &scp_file("$local_script_dir/$s", $user, $host, $dest_dir) || |
|---|
| 215 | return 0; |
|---|
| 216 | } |
|---|
| 217 | return 1; |
|---|
| 218 | } |
|---|
| 219 | |
|---|
| 220 | # Ship per-testbed configuration generated by this script to the remote /proj |
|---|
| 221 | # directories on the remote testbeds |
|---|
| 222 | sub ship_configs { |
|---|
| 223 | my($host, $user, $src_dir, $dest_dir) = @_; # Where, who, where remotely |
|---|
| 224 | my($d, $f); |
|---|
| 225 | |
|---|
| 226 | $d = IO::Dir->new($src_dir) || return 0; |
|---|
| 227 | |
|---|
| 228 | # All directories under $tmpdir are 770 so we can delete them later. |
|---|
| 229 | &ssh_cmd($user, $host, "mkdir -p $dest_dir") || return 0; |
|---|
| 230 | &ssh_cmd($user, $host, "chmod 770 $dest_dir") || return 0; |
|---|
| 231 | while ( $f = $d->read()) { |
|---|
| 232 | next if $f =~ /^\./; |
|---|
| 233 | if ( -d "$src_dir/$f" ) { |
|---|
| 234 | &ship_configs($host, $user, "$src_dir/$f", "$dest_dir/$f") || |
|---|
| 235 | return 0; |
|---|
| 236 | } |
|---|
| 237 | else { |
|---|
| 238 | &scp_file("$src_dir/$f", $user, $host, $dest_dir) || return 0; |
|---|
| 239 | } |
|---|
| 240 | } |
|---|
| 241 | return 1; |
|---|
| 242 | } |
|---|
| 243 | |
|---|
| 244 | # Start a sub section of the experiment on a given testbed. The testbed and |
|---|
| 245 | # the user to start the experiment as are pulled from the global per-testbed |
|---|
| 246 | # hash, passed in as $tbparams, as is the project name on the remote testbed. |
|---|
| 247 | # Parameters are the testbed and the experiment id. Configuration files are |
|---|
| 248 | # scp-ed over to the target testbed from the global $tmpdir/$tb directory. |
|---|
| 249 | # Then the current state of the experiment determined using expinfo. From that |
|---|
| 250 | # state, the experiment is either created, modified or spapped in. If |
|---|
| 251 | # everything succeeds, true is returned. If the global verbose is set progress |
|---|
| 252 | # messages are printed. |
|---|
| 253 | sub start_segment { |
|---|
| 254 | my($tb, $eid, $tbparams, $timeout) = @_;# testbed, experiment ID, |
|---|
| 255 | # per-testbed parameters and remote |
|---|
| 256 | # swap-in timeout |
|---|
| 257 | my $host = # Host name of remote ops (FQDN) |
|---|
| 258 | $tbparams->{$tb}->{'host'} . $tbparams->{$tb}->{'domain'}; |
|---|
| 259 | my $user = $tbparams->{$tb}->{'user'}; # user to pass to ssh |
|---|
| 260 | my $pid = $tbparams->{$tb}->{'project'};# remote project to start the |
|---|
| 261 | # experiment under |
|---|
| 262 | my $tclfile = "./$eid.$tb.tcl"; # Local tcl file with the |
|---|
| 263 | # sub-experiment |
|---|
| 264 | my $proj_dir = "/proj/$pid/exp/$eid/tmp"; # Where to stash federation stuff |
|---|
| 265 | my $tarfiles_dir = "/proj/$pid/tarfiles/$eid"; # Where to stash tarfiles |
|---|
| 266 | my $rpms_dir = "/proj/$pid/rpms/$eid"; # Where to stash rpms |
|---|
| 267 | my $to_hostname = "$proj_dir/hosts"; # remote hostnames file |
|---|
| 268 | my $state; # State of remote experiment |
|---|
| 269 | my $status = new IO::Pipe; # The pipe to get status |
|---|
| 270 | |
|---|
| 271 | # Determine the status of the remote experiment |
|---|
| 272 | $status->reader("ssh $user\@$host /usr/testbed/bin/expinfo $pid $eid") || |
|---|
| 273 | die "Can't ssh to $user\@$host:$!\n"; |
|---|
| 274 | |
|---|
| 275 | # XXX: this is simple now. Parsing may become more complex |
|---|
| 276 | while (<$status>) { |
|---|
| 277 | /State: (\w+)/ && ($state = $1); |
|---|
| 278 | /No\s+such\s+experiment/ && ($state = "none"); |
|---|
| 279 | } |
|---|
| 280 | $status->close(); |
|---|
| 281 | print "$tb: $state\n"; |
|---|
| 282 | |
|---|
| 283 | # Copy the experiment definition data over |
|---|
| 284 | print "transferring subexperiment to $tb\n" if $verbose; |
|---|
| 285 | &scp_file("$tmpdir/$tb/$tclfile", $user, $host) || return 0; |
|---|
| 286 | # Clear out any old experiment data; if not deleted, copies over it by |
|---|
| 287 | # different users will fail. |
|---|
| 288 | # (O /bin/csh, how evil thou art. The -c and the escaped single quotes |
|---|
| 289 | # force the /bin/sh interpretation of the trailing * (which we need to keep |
|---|
| 290 | # tmp around)) Again, this needs to be done more properly once we have a |
|---|
| 291 | # non-ssh interface here.) |
|---|
| 292 | print "clearing experiment subdirs on $tb\n" if $verbose; |
|---|
| 293 | &ssh_cmd($user, $host, "/bin/sh -c \\'/bin/rm -rf $proj_dir/*\\'") || |
|---|
| 294 | return 0; |
|---|
| 295 | print "clearing experiment tarfiles subdirs on $tb\n" if $verbose; |
|---|
| 296 | &ssh_cmd($user, $host, "/bin/rm -rf $tarfiles_dir/") || |
|---|
| 297 | return 0; |
|---|
| 298 | print "creating tarfiles subdir $tarfiles_dir on $tb\n" if $verbose; |
|---|
| 299 | &ssh_cmd($user, $host, "mkdir -p $tarfiles_dir", "create tarfiles") || |
|---|
| 300 | return 0; |
|---|
| 301 | print "clearing experiment rpms subdirs on $tb\n" if $verbose; |
|---|
| 302 | &ssh_cmd($user, $host, "/bin/rm -rf $rpms_dir/") || |
|---|
| 303 | return 0; |
|---|
| 304 | print "creating rpms subdir $rpms_dir on $tb\n" if $verbose; |
|---|
| 305 | &ssh_cmd($user, $host, "mkdir -p $rpms_dir", "create rpms") || |
|---|
| 306 | return 0; |
|---|
| 307 | # Remote experiment is active. Modify it. |
|---|
| 308 | if ($state eq "active") { |
|---|
| 309 | print "Transferring federation support files to $tb\n" if $verbose; |
|---|
| 310 | # First copy new scripts and hostinfo into the remote /proj |
|---|
| 311 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
|---|
| 312 | return 0; |
|---|
| 313 | &ship_scripts($host, $user, $proj_dir) || return 0; |
|---|
| 314 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
|---|
| 315 | |
|---|
| 316 | if ( -d "$tmpdir/tarfiles") { |
|---|
| 317 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
|---|
| 318 | return 0; |
|---|
| 319 | } |
|---|
| 320 | |
|---|
| 321 | if ( -d "$tmpdir/rpms") { |
|---|
| 322 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
|---|
| 323 | return 0; |
|---|
| 324 | } |
|---|
| 325 | |
|---|
| 326 | print "Modifying $eid in place on $tb\n" if $verbose; |
|---|
| 327 | &ssh_cmd($user, $host, "/usr/testbed/bin/modexp -r -s -w $pid " . |
|---|
| 328 | "$eid $tclfile", "modexp", $timeout) || return 0; |
|---|
| 329 | return 1; |
|---|
| 330 | } |
|---|
| 331 | |
|---|
| 332 | # Remote experiment is swapped out, modify it and swap it in. |
|---|
| 333 | if ($state eq "swapped") { |
|---|
| 334 | print "Transferring federation support files to $tb\n" if $verbose; |
|---|
| 335 | # First copy new scripts and hostinfo into the remote /proj (because |
|---|
| 336 | # the experiment exists, the directory tree should be there. |
|---|
| 337 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
|---|
| 338 | return 0; |
|---|
| 339 | &ship_scripts($host, $user, $proj_dir) || return 0; |
|---|
| 340 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
|---|
| 341 | if ( -d "$tmpdir/tarfiles") { |
|---|
| 342 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
|---|
| 343 | return 0; |
|---|
| 344 | } |
|---|
| 345 | |
|---|
| 346 | if ( -d "$tmpdir/rpms") { |
|---|
| 347 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
|---|
| 348 | return 0; |
|---|
| 349 | } |
|---|
| 350 | |
|---|
| 351 | print "Modifying $eid on $tb\n" if $verbose; |
|---|
| 352 | &ssh_cmd($user, $host, "/usr/testbed/bin/modexp -w $pid $eid $tclfile", |
|---|
| 353 | "modexp") || return 0; |
|---|
| 354 | print "Swapping $eid in on $tb\n" if $verbose; |
|---|
| 355 | # Now start up |
|---|
| 356 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid in", |
|---|
| 357 | "swapexp", $timeout) || return 0; |
|---|
| 358 | return 1; |
|---|
| 359 | } |
|---|
| 360 | |
|---|
| 361 | # No remote experiment. Create one. We do this in 2 steps so we can put |
|---|
| 362 | # the configuration files and scripts into the new experiment directories. |
|---|
| 363 | if ($state eq "none") { |
|---|
| 364 | |
|---|
| 365 | if ( -d "$tmpdir/tarfiles") { |
|---|
| 366 | # Tarfiles have to exist for the creation to work |
|---|
| 367 | print "copying tarfiles to $tb\n"; |
|---|
| 368 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
|---|
| 369 | return 0; |
|---|
| 370 | } |
|---|
| 371 | |
|---|
| 372 | if ( -d "$tmpdir/rpms") { |
|---|
| 373 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
|---|
| 374 | return 0; |
|---|
| 375 | } |
|---|
| 376 | |
|---|
| 377 | print "Creating $eid on $tb\n" if $verbose; |
|---|
| 378 | &ssh_cmd($user, $host, "/usr/testbed/bin/startexp -i -f -w -p " . |
|---|
| 379 | "$pid -e $eid $tclfile", "startexp") || return 0; |
|---|
| 380 | # After startexp succeeds, the per-experiment directories exist on the |
|---|
| 381 | # remote testbed. |
|---|
| 382 | print "Transferring federation support files to $tb\n" if $verbose; |
|---|
| 383 | # First copy new scripts and hostinfo into the remote /proj |
|---|
| 384 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
|---|
| 385 | return 0; |
|---|
| 386 | &ship_scripts($host, $user, $proj_dir) || return 0; |
|---|
| 387 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
|---|
| 388 | # Now start up |
|---|
| 389 | print "Swapping $eid in on $tb\n" if $verbose; |
|---|
| 390 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid in", |
|---|
| 391 | "swapexp", $timeout) || return 0; |
|---|
| 392 | return 1; |
|---|
| 393 | } |
|---|
| 394 | |
|---|
| 395 | # Every branch for a known state returns. If execution gets here, the |
|---|
| 396 | # state is unknown. |
|---|
| 397 | warn "unknown state: $state\n"; |
|---|
| 398 | return 0; |
|---|
| 399 | } |
|---|
| 400 | |
|---|
| 401 | # Swap out a sub-experiment - probably because another has failed. Arguments |
|---|
| 402 | # are testbed and experiment. Most of the control flow is similar to |
|---|
| 403 | # start_segment, though much simpler. |
|---|
| 404 | sub stop_segment { |
|---|
| 405 | my($tb, $eid, $tbparams) = @_; # testbed, experiment ID and |
|---|
| 406 | # per-testbed parameters |
|---|
| 407 | my $user = $tbparams->{$tb}->{'user'}; # testbed user |
|---|
| 408 | my $host = # Ops node |
|---|
| 409 | $tbparams->{$tb}->{'host'} . $tbparams->{$tb}->{'domain'}; |
|---|
| 410 | my $pid = $tbparams->{$tb}->{'project'};# testbed project |
|---|
| 411 | |
|---|
| 412 | print "Stopping $eid on $tb\n" if $verbose; |
|---|
| 413 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid out", |
|---|
| 414 | "swapexp (out)") || return 0; |
|---|
| 415 | return 1; |
|---|
| 416 | } |
|---|
| 417 | |
|---|
| 418 | |
|---|
| 419 | $pid = $gid = "dummy"; # Default project and group to pass to |
|---|
| 420 | # $tcl_splitter above. These are total |
|---|
| 421 | # dummy arguments; the splitter doesn't |
|---|
| 422 | # use them at all, but we supply them to |
|---|
| 423 | # keep our changes to the parser minimal. |
|---|
| 424 | # Argument processing. |
|---|
| 425 | getopts('Ft:c:p:f:ndvN', \%opts); |
|---|
| 426 | $splitter_config = $opts{'c'} || "./splitter.conf"; |
|---|
| 427 | $debug = $opts{'d'}; |
|---|
| 428 | $verbose = $opts{'v'} || $opts{'d'}; |
|---|
| 429 | |
|---|
| 430 | &parse_config("$splitter_config", \%opts) || |
|---|
| 431 | die "Cannot read config file $splitter_config: $!\n"; |
|---|
| 432 | |
|---|
| 433 | warn "-N does nothing now. Only one testbeds format supported.\n" |
|---|
| 434 | if $opts{'N'}; |
|---|
| 435 | $fail_soft = $opts{'F'} || $opts{'failsoft'}; |
|---|
| 436 | $startem = $opts{'n'} ? 0 : 1; # If true, start the sub-experiments |
|---|
| 437 | $timeout = $opts{'t'} || $opts{'timeout'}; |
|---|
| 438 | $eid = $opts{'experiment'}; # Experiment ID |
|---|
| 439 | $tcl = $opts{'f'} || shift; # The experiment description |
|---|
| 440 | $master = $opts{'master'}; # Master testbed |
|---|
| 441 | $tmpdir = $opts{'tmpdir'} || $opts{'tempdir'}|| "/tmp"; # tmp files |
|---|
| 442 | $tb_config = $opts{'testbeds'} || "./testbeds"; # testbed configurations |
|---|
| 443 | $local_script_dir = $opts{'scriptdir'}; # Local scripts |
|---|
| 444 | $muxmax = $opts{'muxlimit'} || 3; # Number of connections muxed on one |
|---|
| 445 | # gateway |
|---|
| 446 | |
|---|
| 447 | $max_children = $opts{'p'} || $opts{'maxchildren'} |
|---|
| 448 | if $opts{'p'} || $opts{'maxchildren'}; |
|---|
| 449 | |
|---|
| 450 | $smb_share = $opts{'smbshare'} || # Share to mount from the master |
|---|
| 451 | die "Must give an SMB share\n"; |
|---|
| 452 | $project_user = $opts{'smbuser'} || # User to mount project dirs as |
|---|
| 453 | die "Must give an SMB user\n"; |
|---|
| 454 | |
|---|
| 455 | # For now specify these. We may want to generate them later. |
|---|
| 456 | $gw_pubkey = $opts{'gatewaypubkey'}; |
|---|
| 457 | ($gw_pubkey_base = $gw_pubkey) =~ s#.*/##; |
|---|
| 458 | $gw_secretkey = $opts{'gatewaysecretkey'}; |
|---|
| 459 | ($gw_secretkey_base = $gw_secretkey) =~ s#.*/##; |
|---|
| 460 | |
|---|
| 461 | # tcl program to split experiments (changed during devel) |
|---|
| 462 | $tcl_splitter = $opts{'tclparse'} || "/usr/testbed/lib/ns2ir/parse.tcl"; |
|---|
| 463 | # tclsh to call directly (changed during devel) |
|---|
| 464 | $tclsh = $opts{'tclsh'} || "/usr/local/bin/otclsh"; |
|---|
| 465 | |
|---|
| 466 | # Prefix to avoid collisions |
|---|
| 467 | $tmpdir .= "/split$$"; |
|---|
| 468 | |
|---|
| 469 | print "Temp files are in $tmpdir\n" if $verbose; |
|---|
| 470 | # Create a workspace |
|---|
| 471 | unless (-d "$tmpdir") { |
|---|
| 472 | mkdir("$tmpdir") || die "Can't create $tmpdir: $!"; |
|---|
| 473 | } |
|---|
| 474 | |
|---|
| 475 | # Validate scripts directory |
|---|
| 476 | for my $s (@scripts) { |
|---|
| 477 | die "$local_script_dir/$s not in local script directory. Try -d\n" |
|---|
| 478 | unless -r "$local_script_dir/$s"; |
|---|
| 479 | } |
|---|
| 480 | |
|---|
| 481 | die "Must supply file, master and experiment" unless $master && $tcl && $eid; |
|---|
| 482 | |
|---|
| 483 | &parse_testbeds($tb_config, $tbparams) || |
|---|
| 484 | die "Cannot testbed congfigurations from $tb_config: $!\n"; |
|---|
| 485 | |
|---|
| 486 | # Open a pipe to the splitter program and start it parsing the experiments |
|---|
| 487 | my $pipe = new IO::Pipe; |
|---|
| 488 | # NB no more -p call on parse call. |
|---|
| 489 | $pipe->reader("$tclsh $tcl_splitter -s -x $muxmax -m $master $pid $gid $eid $tcl") || |
|---|
| 490 | die "Cannot execute $tclsh $tcl_splitter -s -x $muxmax -m $master $pid $gid $eid $tcl:$!\n"; |
|---|
| 491 | |
|---|
| 492 | # Parsing variables |
|---|
| 493 | my $ctb; # Current testbed |
|---|
| 494 | my %allocated; # If allocated{$tb} > 0, $tb is in use |
|---|
| 495 | my $destfile; # File that the sub-experiment tcl file is |
|---|
| 496 | # being written to, or "" if none. Also used |
|---|
| 497 | # for hostnames file. |
|---|
| 498 | my $desthandle; # File handle for distfile |
|---|
| 499 | my $gateways; # when gateway lists are being processed this |
|---|
| 500 | # is the testbed whose gateways are being |
|---|
| 501 | # gathered. |
|---|
| 502 | my $control_gateway; # Control net gateway for the current testbed |
|---|
| 503 | my %active_end; # If active_end{"a-b"} > 0 then a is the active |
|---|
| 504 | # end of the a <-> b connector pair. |
|---|
| 505 | |
|---|
| 506 | # Parse the splitter output. This loop creates the sub experiments, gateway |
|---|
| 507 | # configurations and hostnames file |
|---|
| 508 | while (<$pipe>) { |
|---|
| 509 | # Start of a sub-experiment |
|---|
| 510 | /^#\s+Begin\s+Testbed\s+\((\w+)\)/ && do { |
|---|
| 511 | $ctb = $1; |
|---|
| 512 | |
|---|
| 513 | # If we know the testbed, start collecting its sub experiment tcl |
|---|
| 514 | # description. If not, warn the caller and ignore the configuration of |
|---|
| 515 | # this testbed. |
|---|
| 516 | if ($tbparams->{$ctb}) { |
|---|
| 517 | $allocated{$ctb}++; # Keep track of the testbeds allocated |
|---|
| 518 | |
|---|
| 519 | unless (-d "$tmpdir/$ctb") { |
|---|
| 520 | mkdir("$tmpdir/$ctb") || die "Can't create $tmpdir/$ctb: $!"; |
|---|
| 521 | } |
|---|
| 522 | $destfile = "$tmpdir/$ctb/$eid.$ctb.tcl"; |
|---|
| 523 | |
|---|
| 524 | $desthandle = new IO::File(">$destfile") || |
|---|
| 525 | die "Cannot open $destfile:$!\n"; |
|---|
| 526 | } |
|---|
| 527 | else { |
|---|
| 528 | warn "No such testbed $ctb\n"; |
|---|
| 529 | $destfile = ""; |
|---|
| 530 | } |
|---|
| 531 | next; |
|---|
| 532 | }; |
|---|
| 533 | |
|---|
| 534 | # End of that experiment |
|---|
| 535 | /^#\s+End\s+Testbed\s+\((\w+)\)/ && do { |
|---|
| 536 | # Simple syntax check and close out this experiment's tcl description |
|---|
| 537 | die "Mismatched testbed markers ($1, $ctb)\n" unless ($1 eq $ctb); |
|---|
| 538 | $desthandle->close(); |
|---|
| 539 | $destfile = $ctb = ""; |
|---|
| 540 | next; |
|---|
| 541 | }; |
|---|
| 542 | |
|---|
| 543 | # Beginning of a gateway set |
|---|
| 544 | /^#\s+Begin\s+gateways\s+\((\w+)\)/ && do { |
|---|
| 545 | $gateways = $1; |
|---|
| 546 | # If we've heard of this tb, create the config lines for it one at a |
|---|
| 547 | # time. |
|---|
| 548 | if ($allocated{$gateways}) { |
|---|
| 549 | # Just in case. This directory should already have been created |
|---|
| 550 | # above. |
|---|
| 551 | unless (-d "$tmpdir/$gateways") { |
|---|
| 552 | mkdir("$tmpdir/$gateways") || |
|---|
| 553 | die "Can't create $tmpdir/$gateways: $!"; |
|---|
| 554 | } |
|---|
| 555 | } |
|---|
| 556 | else { |
|---|
| 557 | warn "Gateways given (and ignored) for testbed not in use: " . |
|---|
| 558 | "$gateways\n"; |
|---|
| 559 | $gateways = 0; |
|---|
| 560 | } |
|---|
| 561 | next; |
|---|
| 562 | }; |
|---|
| 563 | # End of the gateways section. Output the client config for this testbed |
|---|
| 564 | /^#\s+End\s+gateways\s+\((\w+)\)/ && do { |
|---|
| 565 | die "Mismatched gateway markers ($1, $gateways)\n" |
|---|
| 566 | unless !$gateways || $gateways == $1; |
|---|
| 567 | |
|---|
| 568 | if ($control_gateway ) { |
|---|
| 569 | # Client config |
|---|
| 570 | my $cc = new IO::File(">$tmpdir/$gateways/client.conf"); |
|---|
| 571 | my $master_project = $tbparams->{$master}->{'project'}; |
|---|
| 572 | die "Can't open $tmpdir/$gateways/client.conf: $!\n" unless $cc; |
|---|
| 573 | print $cc "ControlGateway: $control_gateway\n"; |
|---|
| 574 | print $cc "SMBShare: $smb_share\n"; |
|---|
| 575 | print $cc "ProjectUser: $project_user\n"; |
|---|
| 576 | print $cc "ProjectName: $master_project\n"; |
|---|
| 577 | $cc->close(); |
|---|
| 578 | } |
|---|
| 579 | else { warn "No control gateway for $gateways?\n"; } |
|---|
| 580 | |
|---|
| 581 | $gateways = 0; |
|---|
| 582 | next; |
|---|
| 583 | }; |
|---|
| 584 | # Beginning of the hostnames list. Collection is always in the hostnames |
|---|
| 585 | # file. |
|---|
| 586 | /^#\s+Begin\s+hostnames/ && do { |
|---|
| 587 | $destfile = "$tmpdir/hostnames"; |
|---|
| 588 | $desthandle = new IO::File(">$destfile") || |
|---|
| 589 | die "Can't open $destfile:$!\n"; |
|---|
| 590 | next; |
|---|
| 591 | }; |
|---|
| 592 | # end of the hostnames list. |
|---|
| 593 | /^#\s+End\s+hostnames/ && do { |
|---|
| 594 | $desthandle->close(); |
|---|
| 595 | $destfile = ""; |
|---|
| 596 | next; |
|---|
| 597 | }; |
|---|
| 598 | |
|---|
| 599 | # Generate gateway configuration info, one file per line |
|---|
| 600 | $gateways && do { |
|---|
| 601 | chomp; |
|---|
| 602 | my($dtb, $myname, $desthost, $type) = split(" ", $_); |
|---|
| 603 | |
|---|
| 604 | # Many of these are to simplify print statements |
|---|
| 605 | my $sdomain = # domain for the source |
|---|
| 606 | $tbparams->{$gateways}->{'domain'}; |
|---|
| 607 | my $ddomain = # domain for the destination |
|---|
| 608 | $tbparams->{$dtb}->{'domain'}; |
|---|
| 609 | my $sproject = # Project of the destination |
|---|
| 610 | $tbparams->{$gateways}->{'project'}; |
|---|
| 611 | my $fs = # Master fs node (FQDN) |
|---|
| 612 | $tbparams->{$master}->{'fs'} . $tbparams->{$master}->{'domain'}; |
|---|
| 613 | my $boss = # Master boss node (FQDN) |
|---|
| 614 | $tbparams->{$master}->{'boss'} . $tbparams->{$master}->{'domain'}; |
|---|
| 615 | my $remote_script_dir = # Remote fed script location |
|---|
| 616 | "/proj/" . $tbparams->{$dtb}->{'project'} . "/exp/$eid/tmp"; |
|---|
| 617 | my $active; # Is this the active side of |
|---|
| 618 | # the connector? |
|---|
| 619 | |
|---|
| 620 | $sdomain = ".$eid." . $tbparams->{$gateways}->{'project'} . "$sdomain"; |
|---|
| 621 | $ddomain = ".$eid." . $tbparams->{$dtb}->{'project'} . "$ddomain"; |
|---|
| 622 | |
|---|
| 623 | my $conf_file = "$myname$sdomain.gw.conf"; |
|---|
| 624 | # translate to lower case so the `hostname` hack for specifying |
|---|
| 625 | # configuration files works. |
|---|
| 626 | $conf_file =~ tr/A-Z/a-z/; |
|---|
| 627 | |
|---|
| 628 | # If either end of this link is in the master side of the testbed, that |
|---|
| 629 | # side is the active end. Otherwise the first testbed encountered in |
|---|
| 630 | # the file will be the active end. The $active_end variable keeps |
|---|
| 631 | # track of those decisions |
|---|
| 632 | if ( $dtb eq $master ) { $active = "false"; } |
|---|
| 633 | elsif ($gateways eq $master ) { $active = "true"; } |
|---|
| 634 | elsif ( $active_end{"$dtb-$gateways"} ) { $active="false"; } |
|---|
| 635 | else { $active_end{"$gateways-$dtb"}++; $active = "true"; } |
|---|
| 636 | |
|---|
| 637 | # This is used to create the client configuration. |
|---|
| 638 | $control_gateway = "$myname$sdomain" |
|---|
| 639 | if $type =~ /(control|both)/; |
|---|
| 640 | |
|---|
| 641 | # Write out the file |
|---|
| 642 | my $gwconfig = new IO::File(">$tmpdir/$gateways/$conf_file")|| |
|---|
| 643 | die "can't open $tmpdir/$gateways/$conf_file: $!\n"; |
|---|
| 644 | |
|---|
| 645 | print $gwconfig "Active: $active\n"; |
|---|
| 646 | print $gwconfig "TunnelCfg: " . $tbparams->{$gateways}->{'tun'} . "\n"; |
|---|
| 647 | print $gwconfig "BossName: $boss\n"; |
|---|
| 648 | print $gwconfig "FsName: $fs\n"; |
|---|
| 649 | print $gwconfig "Type: $type\n"; |
|---|
| 650 | print $gwconfig "RemoteScriptDir: $remote_script_dir\n"; |
|---|
| 651 | print $gwconfig "Peer: $desthost$ddomain\n"; |
|---|
| 652 | print $gwconfig "Pubkeys: " . |
|---|
| 653 | "/proj/$sproject/exp/$eid/tmp/$gw_pubkey_base\n"; |
|---|
| 654 | print $gwconfig "Privkeys: " . |
|---|
| 655 | "/proj/$sproject/exp/$eid/tmp/$gw_secretkey_base\n"; |
|---|
| 656 | $gwconfig->close(); |
|---|
| 657 | |
|---|
| 658 | # This testbed has a gateway (most will) so make a copy of the keys it |
|---|
| 659 | # needs in this testbed's subdirectory. start_segment will transfer |
|---|
| 660 | # them. |
|---|
| 661 | unless (-r "$tmpdir/$gateways/$gw_pubkey_base" ) { |
|---|
| 662 | copy($gw_pubkey, "$tmpdir/$gateways/$gw_pubkey_base") || |
|---|
| 663 | die "Can't copy pubkeys ($gw_pubkey to " . |
|---|
| 664 | "$tmpdir/$gateways/$gw_pubkey_base): $!\n"; |
|---|
| 665 | } |
|---|
| 666 | if ($active eq "true" ) { |
|---|
| 667 | unless (-r "$tmpdir/$gateways/$gw_secretkey_base" ) { |
|---|
| 668 | copy($gw_secretkey, "$tmpdir/$gateways/$gw_secretkey_base") || |
|---|
| 669 | die "Can't copy secret keys ($gw_secretkey to " . |
|---|
| 670 | "$tmpdir/$gateways/$gw_secretkey_base): $!\n"; |
|---|
| 671 | } |
|---|
| 672 | } |
|---|
| 673 | |
|---|
| 674 | #done processing gateway entry, ready for next line |
|---|
| 675 | next; |
|---|
| 676 | }; |
|---|
| 677 | (/^#\s+Begin\s+tarfiles/../^#\s+End\s+tarfiles/) && do { |
|---|
| 678 | next if /^#/; |
|---|
| 679 | chomp; |
|---|
| 680 | push(@tarfiles, $_); |
|---|
| 681 | next; |
|---|
| 682 | }; |
|---|
| 683 | (/^#\s+Begin\s+rpms/../^#\s+End\s+rpms/) && do { |
|---|
| 684 | next if /^#/; |
|---|
| 685 | chomp; |
|---|
| 686 | push(@rpms, $_); |
|---|
| 687 | next; |
|---|
| 688 | }; |
|---|
| 689 | |
|---|
| 690 | next unless $destfile; # Unidentified testbed, ignore config |
|---|
| 691 | # local copies that can be used in the substitutions below |
|---|
| 692 | my $gwtype = $tbparams->{$ctb}->{'gwtype'}; |
|---|
| 693 | my $gwimage = $tbparams->{$ctb}->{'gwimage'}; |
|---|
| 694 | my $mgwstart = $tbparams->{$ctb}->{'mgwstart'}; |
|---|
| 695 | my $mexpstart = $tbparams->{$ctb}->{'mexpstart'}; |
|---|
| 696 | my $gwstart = $tbparams->{$ctb}->{'gwstart'}; |
|---|
| 697 | my $expstart = $tbparams->{$ctb}->{'expstart'}; |
|---|
| 698 | my $project = $tbparams->{$ctb}->{'project'}; |
|---|
| 699 | |
|---|
| 700 | # Substitute variables |
|---|
| 701 | s/GWTYPE/$gwtype/g; |
|---|
| 702 | s/GWIMAGE/$gwimage/g; |
|---|
| 703 | if ($ctb eq $master ) { |
|---|
| 704 | s/GWSTART/$mgwstart/g; |
|---|
| 705 | s/EXPSTART/$mexpstart/g; |
|---|
| 706 | } |
|---|
| 707 | else { |
|---|
| 708 | s/GWSTART/$gwstart/g; |
|---|
| 709 | s/EXPSTART/$expstart/g; |
|---|
| 710 | } |
|---|
| 711 | # XXX: oh is this bad |
|---|
| 712 | s#GWCONF#FEDDIR\`hostname\`.gw.conf#g; |
|---|
| 713 | s#PROJDIR#/proj/$project/#g; |
|---|
| 714 | s#EID#$eid#g; |
|---|
| 715 | s#FEDDIR#/proj/$project/exp/$eid/tmp/#g; |
|---|
| 716 | print $desthandle $_; |
|---|
| 717 | } |
|---|
| 718 | $pipe->close(); |
|---|
| 719 | die "No nodes in master testbed ($master)\n" unless $allocated{$master}; |
|---|
| 720 | |
|---|
| 721 | # Copy tarfiles and rpms needed at remote sites to the staging directories. |
|---|
| 722 | # Start_segment will distribute them |
|---|
| 723 | for my $t (@tarfiles) { |
|---|
| 724 | die "tarfile '$t' unreadable: $!\n" unless -r $t; |
|---|
| 725 | unless (-d "$tmpdir/tarfiles") { |
|---|
| 726 | mkdir("$tmpdir/tarfiles") || |
|---|
| 727 | die "Can't create $tmpdir/tarfiles:$!\n"; |
|---|
| 728 | } |
|---|
| 729 | copy($t, "$tmpdir/tarfiles") || |
|---|
| 730 | die "Can't copy $t to $tmpdir/tarfiles:$!\n"; |
|---|
| 731 | } |
|---|
| 732 | |
|---|
| 733 | for my $r (@rpms) { |
|---|
| 734 | die "rpm '$r' unreadable: $!\n" unless -r $r; |
|---|
| 735 | unless (-d "$tmpdir/rpms") { |
|---|
| 736 | mkdir("$tmpdir/rpms") || |
|---|
| 737 | die "Can't create $tmpdir/rpms:$!\n"; |
|---|
| 738 | } |
|---|
| 739 | copy($r, "$tmpdir/rpms") || |
|---|
| 740 | die "Can't copy $r to $tmpdir/rpms:$!\n"; |
|---|
| 741 | } |
|---|
| 742 | |
|---|
| 743 | exit(0) unless $startem; |
|---|
| 744 | |
|---|
| 745 | my %started; # If $started{$tb} then $tb successfully started |
|---|
| 746 | my %child; # If $child{$pid} then a process with that pid is |
|---|
| 747 | # working on a starting a segment |
|---|
| 748 | my $nworking = 0; # Number of children working on swapin |
|---|
| 749 | my $pid; # Scratch variable for pids |
|---|
| 750 | |
|---|
| 751 | # Start up the slave sub-experiments first |
|---|
| 752 | TESTBED: |
|---|
| 753 | for my $tb (keys %allocated) { |
|---|
| 754 | if ( $tb ne $master ) { |
|---|
| 755 | while ( $nworking == $max_children ) { |
|---|
| 756 | print "Waiting for a child process to complete\n" if $verbose; |
|---|
| 757 | if (($pid = wait()) != -1 ) { |
|---|
| 758 | # The $? >> 8 is the exit code of the subprocess, which is |
|---|
| 759 | # non-zero if the &start_segment routine failed. |
|---|
| 760 | my $exit_code = ($? >> 8); |
|---|
| 761 | |
|---|
| 762 | print "Child $pid completed exit code ($exit_code)\n" |
|---|
| 763 | if $verbose; |
|---|
| 764 | $nworking--; |
|---|
| 765 | $started{$child{$pid}}++ unless $exit_code; |
|---|
| 766 | if ($child{$pid} ) { delete $child{$pid}; } |
|---|
| 767 | else { warn "Reaped a pid we did not start?? ($pid)\n"; } |
|---|
| 768 | last TESTBED if $exit_code; |
|---|
| 769 | } |
|---|
| 770 | else { warn "wait returned without reaping: $!\n"; } |
|---|
| 771 | } |
|---|
| 772 | if ( $pid = fork() ) { |
|---|
| 773 | # Parent process |
|---|
| 774 | $nworking ++; |
|---|
| 775 | $child{$pid} = $tb; |
|---|
| 776 | print "Started process $pid to start testbed $tb\n" |
|---|
| 777 | if $verbose; |
|---|
| 778 | } |
|---|
| 779 | else { |
|---|
| 780 | # Child. Note that we reverse the sense of the return code when it |
|---|
| 781 | # becomes an exit value. Zero exit values indicate success. |
|---|
| 782 | exit(!&start_segment($tb, $eid, $tbparams, $timeout)); |
|---|
| 783 | } |
|---|
| 784 | } |
|---|
| 785 | } |
|---|
| 786 | |
|---|
| 787 | # Now wait for any still running processes. |
|---|
| 788 | while ( $nworking ) { |
|---|
| 789 | print "Waiting for a child process to complete ($nworking running)\n" |
|---|
| 790 | if $verbose; |
|---|
| 791 | if (($pid = wait()) != -1 ) { |
|---|
| 792 | # The $? >> 8 is the exit code of the subprocess, which is |
|---|
| 793 | # non-zero if the &start_segment routine failed. |
|---|
| 794 | my $exit_code = ($? >> 8); |
|---|
| 795 | |
|---|
| 796 | print "Child $pid completed exit code ($exit_code)\n" |
|---|
| 797 | if $verbose; |
|---|
| 798 | $nworking--; |
|---|
| 799 | $started{$child{$pid}}++ unless $exit_code; |
|---|
| 800 | if ($child{$pid} ) { delete $child{$pid}; } |
|---|
| 801 | else { warn "Reaped a pid we did not start?? ($pid)\n"; } |
|---|
| 802 | } |
|---|
| 803 | else { warn "wait returned without reaping: $!\n"; } |
|---|
| 804 | } |
|---|
| 805 | |
|---|
| 806 | # Now the master |
|---|
| 807 | if (&start_segment($master, $eid, $tbparams, $timeout)) { |
|---|
| 808 | $started{$master}++; |
|---|
| 809 | } |
|---|
| 810 | |
|---|
| 811 | # If any testbed failed, swap the rest out. |
|---|
| 812 | if ( !$fail_soft && scalar(keys %started) != scalar(keys %allocated)) { |
|---|
| 813 | for my $tb (keys %started) { &stop_segment($tb, $eid, $tbparams); } |
|---|
| 814 | print "Error starting experiment\n"; |
|---|
| 815 | exit(1); |
|---|
| 816 | } |
|---|
| 817 | print "Experiment started\n"; |
|---|
| 818 | print "Deleting $tmpdir (-d to leave them in place)\n" if $verbose && !$debug; |
|---|
| 819 | system("rm -rf $tmpdir") unless $debug; |
|---|
| 820 | exit(0); # set the exit value |
|---|
| 821 | |
|---|
| 822 | =pod |
|---|
| 823 | |
|---|
| 824 | =head1 NAME |
|---|
| 825 | |
|---|
| 826 | B<splitter.pl> |
|---|
| 827 | |
|---|
| 828 | =head1 SYNOPSIS |
|---|
| 829 | |
|---|
| 830 | B<splitter.pl> [B<-ndF>] [B<-t> I<secs>] [B<-c> F<config_file>] |
|---|
| 831 | [B<-f> F<experiment_tcl>] [B<-p> I<max_procs>] [F<experiment_tcl>] |
|---|
| 832 | |
|---|
| 833 | =head1 DESCRIPTION |
|---|
| 834 | |
|---|
| 835 | B<splitter.pl> invokes the DETER experiment parser to split an annotated |
|---|
| 836 | experiment into multiple sub-experments and instantiates the sub-experiments on |
|---|
| 837 | their intended testbeds. Annotation is accomplished using the |
|---|
| 838 | tb-set-node-testbed command, added to the parser. |
|---|
| 839 | |
|---|
| 840 | Much of the script's behavior depends on the configuration file, specified with |
|---|
| 841 | the B<-c> flag and defaulting to F<./splitter.conf>. |
|---|
| 842 | |
|---|
| 843 | The testbed labels supplied in the B<tb-set-node-testbed> command are |
|---|
| 844 | meaningful based on their presence in the testbeds file. that file can be |
|---|
| 845 | specified in the configuration file using the B<Testbeds> directive, and |
|---|
| 846 | defaults to F<./testbeds>. The syntax is described below. |
|---|
| 847 | |
|---|
| 848 | Most of the intermediate files are staged in a sub-directory of a temporary |
|---|
| 849 | files directory and deleted at the end of the script. Specifying the B<-d> |
|---|
| 850 | flag on the command line avoids the deletion for debbugging. By default the |
|---|
| 851 | temporary files directory is directory is F</tmp> and can be reset in the |
|---|
| 852 | configuration file using the B<Tmpdir> directive. Intermediate files are |
|---|
| 853 | stored under a subdirectory formed by adding the process ID of the splitter |
|---|
| 854 | process. For example, if the temporary files directory is F</tmp> and the |
|---|
| 855 | B<splitter.pl> process ID is 2323, the temporary files will be stored in |
|---|
| 856 | F</tmp/split2323/>. |
|---|
| 857 | |
|---|
| 858 | The expreriment is split out into one experiment description per testbed in the |
|---|
| 859 | temporary directory named as F<experiment.testbed.tcl> where the experiment is |
|---|
| 860 | the experiment ID given in the configuration file, and the testbed is the |
|---|
| 861 | tb-set-node-testbed parameter for the nodes in the file. |
|---|
| 862 | |
|---|
| 863 | If the B<-n> option is absent the sub-experiments are then instantiated on |
|---|
| 864 | their testbeds. (Here B<-n> is analogous to its use in L<make(1)>). |
|---|
| 865 | Per-testbed parameters are set in the testbeds file. Sub-experiments on |
|---|
| 866 | slave testbeds are instantiated in a random order, but the master testbed is |
|---|
| 867 | currently instantiated last. |
|---|
| 868 | |
|---|
| 869 | Slave testbeds can be swapped in in parallel by specifying the B<-p> parameter |
|---|
| 870 | and the maximum number of simultaneous processes to start. |
|---|
| 871 | |
|---|
| 872 | Scripts to start federation (the federation kit) are copied into the local |
|---|
| 873 | experiment's tmp file - e.g., F</proj/DETER/exp/simple-split/tmp>. These are |
|---|
| 874 | taken from the directory given by the B<ScriptDir> directive in the |
|---|
| 875 | configuration file. |
|---|
| 876 | |
|---|
| 877 | If B<-t> is given the parameter is treated as a parameter to B<Timeout> in |
|---|
| 878 | F<splitter.conf>. |
|---|
| 879 | |
|---|
| 880 | If any sub-experiment fails to instantiate, the other sub-exeriments are |
|---|
| 881 | swapped out. B<-F> avoids this swap out, which can also be specified as |
|---|
| 882 | B<SoftFail: true> in F<splitter.conf> |
|---|
| 883 | |
|---|
| 884 | =head2 Configuration File |
|---|
| 885 | |
|---|
| 886 | The configuration file is a simple set of colon-separated parameters and |
|---|
| 887 | values. A configuration file must be present, either specified in the B<-c> |
|---|
| 888 | flag or the default F<./splitter.conf>. All the parameter names are case |
|---|
| 889 | insensitive, but should not include any whitespace. Parameter values may |
|---|
| 890 | include whitespace, but no newlines. |
|---|
| 891 | |
|---|
| 892 | Possible parameters are: |
|---|
| 893 | |
|---|
| 894 | =over 5 |
|---|
| 895 | |
|---|
| 896 | =item Experiment |
|---|
| 897 | |
|---|
| 898 | The name of the experiment on the various testbeds |
|---|
| 899 | |
|---|
| 900 | =item Master |
|---|
| 901 | |
|---|
| 902 | The master testbed label from the testbeds file, described below. |
|---|
| 903 | |
|---|
| 904 | =item Testbeds |
|---|
| 905 | |
|---|
| 906 | The testbeds file described below, giving per-testbed parameters. If this |
|---|
| 907 | directive is absent the testbeds file defaults to F<./testbeds> |
|---|
| 908 | |
|---|
| 909 | =item ScriptDir |
|---|
| 910 | |
|---|
| 911 | Location of the default federation scripts, i.e. the federation kit. |
|---|
| 912 | |
|---|
| 913 | =item GatewayPubkey |
|---|
| 914 | |
|---|
| 915 | =item GatewaySecretKey |
|---|
| 916 | |
|---|
| 917 | The names of the files containing secret and public keys to use in setting up |
|---|
| 918 | tunnels between testbeds. These will eventually be automatically generated. |
|---|
| 919 | |
|---|
| 920 | =item TmpDir |
|---|
| 921 | |
|---|
| 922 | =item TempDir |
|---|
| 923 | |
|---|
| 924 | The directory where temporary files are created. These are synonyms, but |
|---|
| 925 | should both be specified, B<TmpDir> has priority. If neither is specified, |
|---|
| 926 | F</tmp> is used. |
|---|
| 927 | |
|---|
| 928 | =item SMBShare |
|---|
| 929 | |
|---|
| 930 | The SMB share on the master testbed that will be exported to remote clients. |
|---|
| 931 | |
|---|
| 932 | =item SMBUser |
|---|
| 933 | |
|---|
| 934 | The experiment user to mount project directories as. This user needs to be a |
|---|
| 935 | member of the exported experiment - that is one of the users in the project |
|---|
| 936 | containing this experiment on the master testbed. |
|---|
| 937 | |
|---|
| 938 | =item Timeout |
|---|
| 939 | |
|---|
| 940 | Value in seconds after which a swap-in operatioin will be considered a success. |
|---|
| 941 | Often long swap-ins will hang when there are partial failures. This works |
|---|
| 942 | around this issue. (This behavior can be requested on the command line by |
|---|
| 943 | specifying B<-t> I<secs>.) |
|---|
| 944 | |
|---|
| 945 | =item FailSoft |
|---|
| 946 | |
|---|
| 947 | If not set, failure of any sub experiment swaps the rest out. Setting this to |
|---|
| 948 | any value avoids this swap out. (This behavior can be requested on the command |
|---|
| 949 | line by specifying B<-F>.) |
|---|
| 950 | |
|---|
| 951 | =item MuxLimit |
|---|
| 952 | |
|---|
| 953 | The maximum bumber of links/lans carried by one gateway pair |
|---|
| 954 | |
|---|
| 955 | =item Tclparse |
|---|
| 956 | |
|---|
| 957 | The pathname to the experiment parsing program. Only developers should set |
|---|
| 958 | this. |
|---|
| 959 | |
|---|
| 960 | =item Tclsh |
|---|
| 961 | |
|---|
| 962 | The pathname to the local oTcl shell. Only developers should set |
|---|
| 963 | this. |
|---|
| 964 | |
|---|
| 965 | =back |
|---|
| 966 | |
|---|
| 967 | =head2 Testbeds file |
|---|
| 968 | |
|---|
| 969 | The configuration file (F<./testbeds> unless overridden by B<-c>) is a file of |
|---|
| 970 | scoped attribute-value pairs where each attribute is specified on a separate |
|---|
| 971 | line of the configuration file. Each testbed's parameters are preceeded by the |
|---|
| 972 | testbed label in brackets ([]) on a line by itself. After that the parameters |
|---|
| 973 | are specified as parameter: value. This is essentially the same format as the |
|---|
| 974 | configuration file. Parameters are: |
|---|
| 975 | |
|---|
| 976 | =over 4 |
|---|
| 977 | |
|---|
| 978 | =item User |
|---|
| 979 | |
|---|
| 980 | The user under which to make requests to this testbed. The user running |
|---|
| 981 | B<splitter.pl> must be able to authenicate as this user under L<ssh(1)> to this |
|---|
| 982 | testbed. |
|---|
| 983 | |
|---|
| 984 | =item OpsNode |
|---|
| 985 | |
|---|
| 986 | The host name of the testbed's ops node. The user calling B<splitter.pl> must |
|---|
| 987 | be able to execute commands on this host via L<ssh(1)>. |
|---|
| 988 | |
|---|
| 989 | =item Domain |
|---|
| 990 | |
|---|
| 991 | The domain of nodes in this testbed (including the ops host). This parameter |
|---|
| 992 | should always start with a period. |
|---|
| 993 | |
|---|
| 994 | =item Project |
|---|
| 995 | |
|---|
| 996 | The project under which to instantiate sub-experiments on this testbed. |
|---|
| 997 | |
|---|
| 998 | =item ConnectorType |
|---|
| 999 | |
|---|
| 1000 | The node type for inter-testbed connector nodes on this testbed. |
|---|
| 1001 | |
|---|
| 1002 | =item SlaveNodeStartCmd |
|---|
| 1003 | |
|---|
| 1004 | The start command to run on experimental nodes when this testbed is used as a |
|---|
| 1005 | slave. In all the start commands the following string substitutions are made: |
|---|
| 1006 | |
|---|
| 1007 | =over 10 |
|---|
| 1008 | |
|---|
| 1009 | =item FEDDIR |
|---|
| 1010 | |
|---|
| 1011 | The local experiment's federation scripts directory. Each local experiment |
|---|
| 1012 | will have this replaced by the scripts directory on its local boss. |
|---|
| 1013 | |
|---|
| 1014 | =item GWCONF |
|---|
| 1015 | |
|---|
| 1016 | The full pathname of the gateway configuration file. As with FEDDIR, this is |
|---|
| 1017 | on the local boss. |
|---|
| 1018 | |
|---|
| 1019 | =item PROJDIR |
|---|
| 1020 | |
|---|
| 1021 | The project directory on the local boss. |
|---|
| 1022 | |
|---|
| 1023 | =item EID |
|---|
| 1024 | |
|---|
| 1025 | The local experiment name. |
|---|
| 1026 | |
|---|
| 1027 | =back |
|---|
| 1028 | |
|---|
| 1029 | All startcmds specified in F<testbeds> undergo these expansions. |
|---|
| 1030 | |
|---|
| 1031 | =item SlaveConnectorStartCmd |
|---|
| 1032 | |
|---|
| 1033 | The start command to run on gateway nodes when this testbed is used as a slave. |
|---|
| 1034 | The same string substitutions are made in this command as in SlaveNodeStartCmd. |
|---|
| 1035 | |
|---|
| 1036 | =item MasterNodeStartCmd |
|---|
| 1037 | |
|---|
| 1038 | The start command to run on experimental nodes when this testbed is used as a |
|---|
| 1039 | master. The same string substitutions are made in this command as in |
|---|
| 1040 | SlaveNodeStartCmd. |
|---|
| 1041 | |
|---|
| 1042 | =item MasterConnectorStartCmd |
|---|
| 1043 | |
|---|
| 1044 | The start command to run on gateway nodes when this testbed is used as a |
|---|
| 1045 | master. The same string substitutions are made in this command as in |
|---|
| 1046 | SlaveNodeStartCmd. |
|---|
| 1047 | |
|---|
| 1048 | =item ConnectorImage |
|---|
| 1049 | |
|---|
| 1050 | The disk image to be loaded on a gateway node on this testbed. |
|---|
| 1051 | |
|---|
| 1052 | =item FileServer |
|---|
| 1053 | |
|---|
| 1054 | The node in the master testbed from which filesystems are mounted. |
|---|
| 1055 | |
|---|
| 1056 | =item Boss |
|---|
| 1057 | |
|---|
| 1058 | The node in the master testbed that controls the testbed. |
|---|
| 1059 | |
|---|
| 1060 | =item TunnelCfg |
|---|
| 1061 | |
|---|
| 1062 | True if the connector needs to do DETER federation. This parameter will |
|---|
| 1063 | probably be removed. |
|---|
| 1064 | |
|---|
| 1065 | |
|---|
| 1066 | =back |
|---|
| 1067 | |
|---|
| 1068 | =head1 ENVIRONMENT |
|---|
| 1069 | |
|---|
| 1070 | B<splitter.pl> does not directly make use of environment variables, but calls |
|---|
| 1071 | out to L<ssh(1)> and (indirectly) to L<sh(1)>, which may be influenced by the |
|---|
| 1072 | environment. |
|---|
| 1073 | |
|---|
| 1074 | =head1 BUGS |
|---|
| 1075 | |
|---|
| 1076 | A deprecated B<-N> flag was used to select testbeds file format. Only one |
|---|
| 1077 | format is supported now, and B<-N> generates a warning, but otherwise does not |
|---|
| 1078 | affect B<splitter.pl>. |
|---|
| 1079 | |
|---|
| 1080 | =head1 SEE ALSO |
|---|
| 1081 | |
|---|
| 1082 | L<sh(1)>, L<ssh(1)> |
|---|
| 1083 | |
|---|
| 1084 | =cut |
|---|
