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revision 1.5 by joko, Sat Feb 22 17:26:13 2003 UTC revision 1.17 by jonen, Wed Jul 2 11:17:32 2003 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ---------------------------------------------------------------------------  ## ---------------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.17  2003/07/02 11:17:32  jonen
6    ##  minor changes
7    ##
8    ##  Revision 1.16  2003/06/25 22:49:56  joko
9    ##  RUNNING_IN_HELL mode for detach option
10    ##
11    ##  Revision 1.15  2003/06/24 20:21:12  jonen
12    ##  + changed linux part of run_cmd to use Proc::Background instead of IPC::...
13    ##
14    ##  Revision 1.14  2003/06/24 20:13:18  joko
15    ##  + sub findpatch
16    ##  + now using findpatch and Proc::Background for win32/perl
17    ##
18    ##  Revision 1.13  2003/06/23 20:58:31  joko
19    ##  restructured, hopefully makes Linux and Windows (and *BSD) more compatible...  what about IPC::Cmd???
20    ##
21    ##  Revision 1.12  2003/06/23 19:43:19  joko
22    ##  minor cleanup
23    ##  now using IPC::Session::NoShell
24    ##
25    ##  Revision 1.11  2003/06/23 17:41:50  jonen
26    ##  + NEW - used IPC::Session instead of IPC::Run to get better results at linux
27    ##
28    ##  Revision 1.10  2003/06/23 15:59:16  joko
29    ##  major/minor fixes?
30    ##
31    ##  Revision 1.9  2003/05/13 05:36:24  joko
32    ##  heavy modifications to run_cmd
33    ##  + sub get_executable
34    ##  + sub get_executable_wrapper
35    ##
36    ##  Revision 1.8  2003/04/04 17:31:59  joko
37    ##  + sub make_guid
38    ##
39    ##  Revision 1.7  2003/03/29 07:24:10  joko
40    ##  enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
41    ##
42    ##  Revision 1.6  2003/03/28 06:58:06  joko
43    ##  new: 'run_cmd' now asynchronous! (via IPC::Run...)
44    ##
45  ##  Revision 1.5  2003/02/22 17:26:13  joko  ##  Revision 1.5  2003/02/22 17:26:13  joko
46  ##  + enhanced unix compatibility fix  ##  + enhanced unix compatibility fix
47  ##  ##
# Line 33  our @EXPORT_OK = qw( Line 73  our @EXPORT_OK = qw(
73    run_cmd run_cmds    run_cmd run_cmds
74    get_chomped    get_chomped
75    bool2status    bool2status
76      make_guid
77  );  );
78    
79    
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -   main  
   
80  use Data::Dumper;  use Data::Dumper;
81  use POSIX qw(strftime);  use POSIX qw( strftime );
82    #use IPC::Run qw( run timeout );
83    use IPC::Run qw( start pump finish timeout run timer ) ;
84    use Carp;
85    
86    # NEW - 2003-06-23 for Linux (what about *BSD?)
87    use IPC::Session;
88    
89    use File::Spec;
90    use Proc::Background;
91    
92    
93  # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;  # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
94  # see "perldoc -f localtime"  # see "perldoc -f localtime"
   
95  sub now {  sub now {
96    my $options = shift;    my $options = shift;
97    my $pattern = "%Y-%m-%d %H:%M:%S";    my $pattern = "%Y-%m-%d %H:%M:%S";
# Line 56  sub today { Line 104  sub today {
104    return strftime("%Y-%m-%d", localtime);    return strftime("%Y-%m-%d", localtime);
105  }  }
106    
107    sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
108    
109    
110    sub get_executable {
111      my $cmd = shift;
112      # FIXME: detect type of program and run with proper application/interpreter
113      # using IPC::Run we have to dispatch this on our own! *no* os-interaction or interpolation here!?
114      # => better use absolute path-names only?!
115      my $application = '';
116      if ($cmd =~ m/\w+\.pl\s*.*/) {
117          $application = get_interpreter_wrapper($cmd, 'perl');
118          #$cmd = "$application $cmd" if $application;
119          $application .= ' ';
120        
121      } else {
122        $application = './';
123      }
124      return $application;
125    }
126    
127    sub get_interpreter_wrapper {
128      my $cmd = shift;
129      my $language = shift;
130      $language ||= '';
131    
132      my $wrapper = '';
133    
134      if ($language eq 'perl') {
135      
136        if (RUNNING_IN_HELL()) {
137          # Required to adapt to IPC::Run on win32.
138          #$wrapper = 'cmd.exe /C perl';
139          #$wrapper = 'start perl';
140          $wrapper = 'perl';
141          #$wrapper = 'cmd.exe /C';
142        } else {
143          # NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
144          #  whats about Win32?
145          $wrapper = 'perl';
146        }
147        
148      } else {
149        die("No wrapper for language '$language'.");
150      }
151      
152      return $wrapper;
153    }
154    
155    
156  sub run_cmd {  sub run_cmd {
157    my $cmd = shift;    my $cmd = shift;
158    my $caption = shift;    my $caption = shift;
159    #$cmd = 'perl ' . $cmd;    my $options = shift;
160      
161      #print STDOUT "run_cmd - options: ", Dumper($options), "\n";
162      
163      # report - header
164    my $sep = "-" x 60;    my $sep = "-" x 60;
165    print $sep, "\n";    print STDOUT $sep, "\n";
166    print "  ", $cmd, "\n";    print STDOUT "  ", $cmd;
167    print "  ", $caption, "\n" if $caption;    print STDOUT " - ", $caption if $caption;
168    print $sep, "\n";    print STDOUT "\n", $sep, "\n";
169        
170    # strip name of executable from full command string    # strip name of executable from full command string
171    $cmd =~ m/(.+?)\s/;    $cmd =~ m/^(.+?)\s(.*)$/;
172    my $executable = $1;    my $executable = $1;
173      my $executable_args = $2;
174        
175    =pod
176    # for unix: check if executable is in local directory, if so - prefix with './'    # for unix: check if executable is in local directory, if so - prefix with './'
177    if (!RUNNING_IN_HELL()) {    if (!RUNNING_IN_HELL()) {
178      #if ($cmd !~ m/\//) {      #if ($cmd !~ m/\//) {
179      if (-e $executable) {      if (-e $executable) {
       $cmd = "./$cmd";  
180      }      }
181    }    }
182      =cut
183    system($cmd);  
184      # new of 2003-05-07: basedir option to be prepended to command string
185      my $basedir = $options->{BASEDIR};
186      my $use_path = $options->{USE_PATH};
187    
188      # for all systems: check existance of files - use basedir if given, try current directory otherwise
189      if ($basedir) {
190        -e "$basedir/$executable" or die("$basedir/$executable does not exist.");
191        $basedir .= '/';
192        $cmd = "$basedir$cmd";
193      } elsif ($use_path) {
194        #$basedir = "";
195        $basedir = findpath($executable);
196        #print "basedir: $basedir", "\n";
197        my $abspath = File::Spec->catfile($basedir, $executable);
198        #print STDOUT "PATH: ", $abspath, "\n";
199        -e $abspath or die("$abspath does not exist.");
200        $cmd = $abspath . ' ' . $executable_args;
201      } else {
202        -e $executable or die("$executable does not exist.");
203        #$basedir = ".";
204        #$basedir .= './';
205        $basedir = "";
206        $cmd = "$basedir$cmd";
207      }
208    
209      # V1 - backticks or qq{}
210    #`$cmd`;    #`$cmd`;
211    print "ready.", "\n";    #qq{$cmd};
212      
213      # V2 - via 'system'
214      #system($cmd);
215    
216      #if (not $use_path) {
217        my $application = get_executable($cmd);
218        $cmd = "$application$cmd" if $application;
219      #}
220    
221      my @cmd = split(' ', $cmd);
222    
223      # V3 - using IPC (optional)
224      if ($options->{async}) {
225    
226        #run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
227    
228        print STDOUT "run_cmd[async]: Proc::Background: $cmd", "\n";
229        
230        # V3.1 - using IPC::Run
231        #
232        # tests:
233        
234        if (RUNNING_IN_HELL()) {
235        
236          #my $in; my $out; my $err;
237          
238          #print STDOUT "findpath: ", findpath('rap.pl'), "\n";
239          
240          # no success!
241          #start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
242          #
243          # success on Win32, but seems broken at 'timeout' on linux:
244          #run(\@cmd, timeout(3)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
245          #start(\@cmd, timer(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
246          #start(\@cmd, \undef) or croak("run_cmd: IPC::Run could not start '$cmd'.");
247          #start \@cmd or croak("run_cmd: IPC::Run could not start '$cmd'.");
248          #start(\@cmd, timeout(1)) or croak("run_cmd: IPC::Run could not start '$cmd'.");      
249              
250          # other tests ;)
251          #$IPC::Run::Timer::timeout = 2000;
252          #start $cmd or die("IPC::Run could not start '$cmd'.");
253          
254          #my $in; my $out; my $t;
255          #my $harness = start( \@cmd, \$in, \$out, $t = timer( 5 ) ) ;
256          #my $harness = start( \@cmd ) ;
257          #$harness->pump_nb();
258          
259          #my $postfix = '2>&1 |';
260          #open PIPE, "$cmd $postfix" or die("run_cmd: could not run in background via open!");
261          
262          my $proc1 = Proc::Background->new(@cmd);
263          print "pid: ", $proc1->pid(), "\n";
264    
265          
266        } else {
267    
268          #print STDOUT "run_cmd: IPC::Session: $cmd", "\n";
269    
270          # V3.2 - using IPC::Session
271          #  success on Linux AND Win32 ??
272          #
273          # set timeout:
274          #  (don't really know why we needs some secconds
275          #   to wait for init of process !?!)
276          #my $session_timeout = 15;
277          # set session name (default: cmd as string):
278          #my $session_command = $cmd;
279          #my $session_shell = "/bin/sh";
280          # create session (beware of using '->new' here!?):
281          #my $session = new IPC::Session($session_shell, $session_timeout);
282          
283          # send 'cmd' to session - not required since complete command is sent via constructor above
284          #$session->send($cmd);
285    
286          #my $output = $session->stdout();
287          #print "WS::Admin started.\n" if $output = ' ';
288    
289          # tests
290          #$session->send("echo hello");
291          #chomp(my $hello = $session->stdout());      
292          #print "ok 3\n" if $hello eq "hello";
293          
294          # optional switch case:
295          #for ($session->stdout()) {
296          #  /_bootDataBases/ && do { print "WS::Admin started.\n" };
297          #}
298          # optional get error:
299          #my $err = session->stderr();
300          #print "ERR: " . Dumper($err) . "\n";
301    
302          #open( *OUT, ">out.txt" ) ;
303          #open( *ERR, ">err.txt" ) ;
304          #run(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
305          #my ($out, $err);
306          #my $h = start(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
307          #finish $h if $err =~ /error/;
308          
309          # get child pid
310          #my $kid;
311          #do { $kid=wait(); } until $kid > 0;
312          #print "Child PID: " . $kid . "n";
313    
314          #finish $h;
315    
316          
317          # test using Proc::Background - success !!
318          my $proc = Proc::Background->new($cmd);
319          my $kid = $proc->pid();
320          print STDOUT "run_cmd: Proc::Background: $cmd, child PID $kid", "\n";
321          $proc->wait();
322          $proc->die();
323    
324        }
325    
326    
327      } elsif ($options->{detach}) {
328    
329        if (RUNNING_IN_HELL()) {
330          print STDOUT "run_cmd[detach]: Proc::Background: $cmd", "\n";
331          my $proc1 = Proc::Background->new(@cmd);
332          print "pid: ", $proc1->pid(), "\n";
333        } else {
334          print STDOUT "run_cmd[detach]: system('$cmd' &).", "\n";
335          system($cmd . ' &');    
336        }
337    
338      } else {
339        print STDOUT "run_cmd: system('$cmd').", "\n";
340        system($cmd);
341      }
342      
343      print STDOUT "run_cmd: ready.", "\n";
344      
345  }  }
346    
347  sub run_cmds {  sub run_cmds {
348      my $options = {};
349      if (ref $_[$#_] eq 'HASH') {
350        #print "YAI", "\n";
351        $options = pop @_;
352      }
353    foreach (@_) {    foreach (@_) {
354      run_cmd($_);      run_cmd($_, '', $options);
355    }    }
356  }  }
357    
# Line 100  sub bool2status { Line 366  sub bool2status {
366    return ($bool ? 'ok' : 'failed');    return ($bool ? 'ok' : 'failed');
367  }  }
368    
369  sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }  # create global unique identifers using Data::UUID
370    # if updating this code, please also modify Tangram::Storage::make_guid
371    sub make_guid
372      {
373        my $self = shift;
374    
375        my $guid;
376    
377        # try to use Data::UUID first ...
378        eval("use Data::UUID;");
379        if (!$@) {
380          my $ug = Data::UUID->new();
381          $guid = $ug->create_str();
382          
383        # ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
384        } else {
385          eval("use Data::UUID::PurePerl;");
386          if (!$@) {
387            $guid = Data::UUID::PurePerl::generate_id();
388          } else {
389            croak "couldn't create globally unique identifier";
390          }
391        }
392        
393        return $guid;
394      }
395    
396    # [modified] from: http://www.mit.edu/afs/athena/contrib/watchmaker/src/pt/Configure
397    sub findpath {
398        #local($path);
399        #local($arg) = shift;
400        my $arg = shift;
401        my $path;
402        #for my $dir (split(/:/,$ENV{'PATH'})) {
403        for my $dir (File::Spec->path()) {
404            #if (-x "$dir/$arg" && -f _) {
405            #print STDOUT "scanning: ", "$dir/$arg", "\n";
406            if (-e "$dir/$arg") {
407                #$path = "$dir/$arg";
408                #$path = "$dir/";
409                $path = $dir;
410                last;
411            }
412        }
413        $path;
414    }
415    
416  1;  1;
417    __END__

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