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revision 1.2 by joko, Tue Feb 11 05:14:28 2003 UTC revision 1.16 by joko, Wed Jun 25 22:49:56 2003 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ---------------------------------------------------------------------------  ## ---------------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.16  2003/06/25 22:49:56  joko
6    ##  RUNNING_IN_HELL mode for detach option
7    ##
8    ##  Revision 1.15  2003/06/24 20:21:12  jonen
9    ##  + changed linux part of run_cmd to use Proc::Background instead of IPC::...
10    ##
11    ##  Revision 1.14  2003/06/24 20:13:18  joko
12    ##  + sub findpatch
13    ##  + now using findpatch and Proc::Background for win32/perl
14    ##
15    ##  Revision 1.13  2003/06/23 20:58:31  joko
16    ##  restructured, hopefully makes Linux and Windows (and *BSD) more compatible...  what about IPC::Cmd???
17    ##
18    ##  Revision 1.12  2003/06/23 19:43:19  joko
19    ##  minor cleanup
20    ##  now using IPC::Session::NoShell
21    ##
22    ##  Revision 1.11  2003/06/23 17:41:50  jonen
23    ##  + NEW - used IPC::Session instead of IPC::Run to get better results at linux
24    ##
25    ##  Revision 1.10  2003/06/23 15:59:16  joko
26    ##  major/minor fixes?
27    ##
28    ##  Revision 1.9  2003/05/13 05:36:24  joko
29    ##  heavy modifications to run_cmd
30    ##  + sub get_executable
31    ##  + sub get_executable_wrapper
32    ##
33    ##  Revision 1.8  2003/04/04 17:31:59  joko
34    ##  + sub make_guid
35    ##
36    ##  Revision 1.7  2003/03/29 07:24:10  joko
37    ##  enhanced 'run_cmd': now tries to execute program with appropriate application (e.g. 'cmd.exe' or 'perl')
38    ##
39    ##  Revision 1.6  2003/03/28 06:58:06  joko
40    ##  new: 'run_cmd' now asynchronous! (via IPC::Run...)
41    ##
42    ##  Revision 1.5  2003/02/22 17:26:13  joko
43    ##  + enhanced unix compatibility fix
44    ##
45    ##  Revision 1.4  2003/02/22 17:19:36  joko
46    ##  + unix compatibility fix
47    ##
48    ##  Revision 1.3  2003/02/14 14:17:04  joko
49    ##  - shortened seperator
50    ##
51  ##  Revision 1.2  2003/02/11 05:14:28  joko  ##  Revision 1.2  2003/02/11 05:14:28  joko
52  ##  + refactored code from libp.pm  ##  + refactored code from libp.pm
53  ##  ##
# Line 24  our @EXPORT_OK = qw( Line 70  our @EXPORT_OK = qw(
70    run_cmd run_cmds    run_cmd run_cmds
71    get_chomped    get_chomped
72    bool2status    bool2status
73      make_guid
74  );  );
75    
76    
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -   main  
   
77  use Data::Dumper;  use Data::Dumper;
78  use POSIX qw(strftime);  use POSIX qw( strftime );
79    #use IPC::Run qw( run timeout );
80    use IPC::Run qw( start pump finish timeout run timer ) ;
81    use Carp;
82    
83    # NEW - 2003-06-23 for Linux (what about *BSD?)
84    use IPC::Session;
85    
86    use File::Spec;
87    use Proc::Background;
88    
89    
90  # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;  # $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime;
91  # see "perldoc -f localtime"  # see "perldoc -f localtime"
   
92  sub now {  sub now {
93    my $options = shift;    my $options = shift;
94    my $pattern = "%Y-%m-%d %H:%M:%S";    my $pattern = "%Y-%m-%d %H:%M:%S";
# Line 47  sub today { Line 101  sub today {
101    return strftime("%Y-%m-%d", localtime);    return strftime("%Y-%m-%d", localtime);
102  }  }
103    
104    sub RUNNING_IN_HELL () { $^O eq 'MSWin32' }
105    
106    
107    sub get_executable {
108      my $cmd = shift;
109      # FIXME: detect type of program and run with proper application/interpreter
110      # using IPC::Run we have to dispatch this on our own! *no* os-interaction or interpolation here!?
111      # => better use absolute path-names only?!
112      my $application = '';
113      if ($cmd =~ m/\w+\.pl\s*.*/) {
114          $application = get_interpreter_wrapper($cmd, 'perl');
115          #$cmd = "$application $cmd" if $application;
116          $application .= ' ';
117        
118      } else {
119        $application = './';
120      }
121      return $application;
122    }
123    
124    sub get_interpreter_wrapper {
125      my $cmd = shift;
126      my $language = shift;
127      $language ||= '';
128    
129      my $wrapper = '';
130    
131      if ($language eq 'perl') {
132      
133        if (RUNNING_IN_HELL()) {
134          # Required to adapt to IPC::Run on win32.
135          #$wrapper = 'cmd.exe /C perl';
136          #$wrapper = 'start perl';
137          $wrapper = 'perl';
138          #$wrapper = 'cmd.exe /C';
139        } else {
140          # NEW 2003-06-23 - needed if used with IPC::Session (at Linux)
141          #  whats about Win32?
142          $wrapper = 'perl';
143        }
144        
145      } else {
146        die("No wrapper for language '$language'.");
147      }
148      
149      return $wrapper;
150    }
151    
152    
153  sub run_cmd {  sub run_cmd {
154    my $cmd = shift;    my $cmd = shift;
155    my $caption = shift;    my $caption = shift;
156    #$cmd = 'perl ' . $cmd;    my $options = shift;
157    my $sep = "-" x 90;    
158    print $sep, "\n";    #print STDOUT "run_cmd - options: ", Dumper($options), "\n";
159    print "  ", $cmd, "\n";    
160    print "  ", $caption, "\n" if $caption;    # report - header
161    print $sep, "\n";    my $sep = "-" x 60;
162    system($cmd);    print STDOUT $sep, "\n";
163      print STDOUT "  ", $cmd;
164      print STDOUT " - ", $caption if $caption;
165      print STDOUT "\n", $sep, "\n";
166      
167      # strip name of executable from full command string
168      $cmd =~ m/^(.+?)\s(.*)$/;
169      my $executable = $1;
170      my $executable_args = $2;
171      
172    =pod
173      # for unix: check if executable is in local directory, if so - prefix with './'
174      if (!RUNNING_IN_HELL()) {
175        #if ($cmd !~ m/\//) {
176        if (-e $executable) {
177        }
178      }
179    =cut
180    
181      # new of 2003-05-07: basedir option to be prepended to command string
182      my $basedir = $options->{BASEDIR};
183      my $use_path = $options->{USE_PATH};
184    
185      # for all systems: check existance of files - use basedir if given, try current directory otherwise
186      if ($basedir) {
187        -e "$basedir/$executable" or die("$basedir/$executable does not exist.");
188        $basedir .= '/';
189        $cmd = "$basedir$cmd";
190      } elsif ($use_path) {
191        #$basedir = "";
192        $basedir = findpath($executable);
193        #print "basedir: $basedir", "\n";
194        my $abspath = File::Spec->catfile($basedir, $executable);
195        #print STDOUT "PATH: ", $abspath, "\n";
196        -e $abspath or die("$abspath does not exist.");
197        $cmd = $abspath . ' ' . $executable_args;
198      } else {
199        -e $executable or die("$executable does not exist.");
200        #$basedir = ".";
201        #$basedir .= './';
202        $basedir = "";
203        $cmd = "$basedir$cmd";
204      }
205    
206      # V1 - backticks or qq{}
207    #`$cmd`;    #`$cmd`;
208    print "ready.", "\n";    #qq{$cmd};
209      
210      # V2 - via 'system'
211      #system($cmd);
212    
213      #if (not $use_path) {
214        my $application = get_executable($cmd);
215        $cmd = "$application$cmd" if $application;
216      #}
217    
218      my @cmd = split(' ', $cmd);
219    
220      # V3 - using IPC (optional)
221      if ($options->{async}) {
222    
223        #run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?";
224    
225        print STDOUT "run_cmd[async]: Proc::Background: $cmd", "\n";
226        
227        # V3.1 - using IPC::Run
228        #
229        # tests:
230        
231        if (RUNNING_IN_HELL()) {
232        
233          #my $in; my $out; my $err;
234          
235          #print STDOUT "findpath: ", findpath('rap.pl'), "\n";
236          
237          # no success!
238          #start \@cmd, timeout(0) or croak("run_cmd: IPC::Run could not start '$cmd'.");
239          #
240          # success on Win32, but seems broken at 'timeout' on linux:
241          #run(\@cmd, timeout(3)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
242          #start(\@cmd, timer(2)) or croak("run_cmd: IPC::Run could not start '$cmd'.");
243          #start(\@cmd, \undef) or croak("run_cmd: IPC::Run could not start '$cmd'.");
244          #start \@cmd or croak("run_cmd: IPC::Run could not start '$cmd'.");
245          #start(\@cmd, timeout(1)) or croak("run_cmd: IPC::Run could not start '$cmd'.");      
246              
247          # other tests ;)
248          #$IPC::Run::Timer::timeout = 2000;
249          #start $cmd or die("IPC::Run could not start '$cmd'.");
250          
251          #my $in; my $out; my $t;
252          #my $harness = start( \@cmd, \$in, \$out, $t = timer( 5 ) ) ;
253          #my $harness = start( \@cmd ) ;
254          #$harness->pump_nb();
255          
256          #my $postfix = '2>&1 |';
257          #open PIPE, "$cmd $postfix" or die("run_cmd: could not run in background via open!");
258          
259          my $proc1 = Proc::Background->new(@cmd);
260          print "pid: ", $proc1->pid(), "\n";
261    
262          
263        } else {
264    
265          #print STDOUT "run_cmd: IPC::Session: $cmd", "\n";
266    
267          # V3.2 - using IPC::Session
268          #  success on Linux AND Win32 ??
269          #
270          # set timeout:
271          #  (don't really know why we needs some secconds
272          #   to wait for init of process !?!)
273          #my $session_timeout = 15;
274          # set session name (default: cmd as string):
275          #my $session_command = $cmd;
276          #my $session_shell = "/bin/sh";
277          # create session (beware of using '->new' here!?):
278          #my $session = new IPC::Session($session_shell, $session_timeout);
279          
280          # send 'cmd' to session - not required since complete command is sent via constructor above
281          #$session->send($cmd);
282    
283          #my $output = $session->stdout();
284          #print "WS::Admin started.\n" if $output = ' ';
285    
286          # tests
287          #$session->send("echo hello");
288          #chomp(my $hello = $session->stdout());      
289          #print "ok 3\n" if $hello eq "hello";
290          
291          # optional switch case:
292          #for ($session->stdout()) {
293          #  /_bootDataBases/ && do { print "WS::Admin started.\n" };
294          #}
295          # optional get error:
296          #my $err = session->stderr();
297          #print "ERR: " . Dumper($err) . "\n";
298    
299          #open( *OUT, ">out.txt" ) ;
300          #open( *ERR, ">err.txt" ) ;
301          #run(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
302          #my ($out, $err);
303          #my $h = start(\@cmd, \undef,  \*OUT, \*ERR  ) or croak("run_cmd: IPC::Run could not start '$cmd'.");
304          #finish $h if $err =~ /error/;
305          
306          # get child pid
307          #my $kid;
308          #do { $kid=wait(); } until $kid > 0;
309          #print "Child PID: " . $kid . "n";
310    
311          #finish $h;
312    
313          
314          # test using Proc::Background - success !!
315          my $proc = Proc::Background->new($cmd);
316          my $kid = $proc->pid();
317          print STDOUT "run_cmd: Proc::Background: $cmd, child PID $kid", "\n";
318          $proc->wait();
319          $proc->die();
320    
321        }
322    
323    
324      } elsif ($options->{detach}) {
325    
326        if (RUNNING_IN_HELL()) {
327          print STDOUT "run_cmd[detach]: Proc::Background: $cmd", "\n";
328          my $proc1 = Proc::Background->new(@cmd);
329          print "pid: ", $proc1->pid(), "\n";
330        } else {
331          print STDERR "run_cmd[detach]: system('$cmd' &).", "\n";
332          system($cmd . ' &');    
333        }
334    
335      } else {
336        print STDOUT "run_cmd: system('$cmd').", "\n";
337        system($cmd);
338      }
339      
340      print STDOUT "run_cmd: ready.", "\n";
341      
342  }  }
343    
344  sub run_cmds {  sub run_cmds {
345      my $options = {};
346      if (ref $_[$#_] eq 'HASH') {
347        #print "YAI", "\n";
348        $options = pop @_;
349      }
350    foreach (@_) {    foreach (@_) {
351      run_cmd($_);      run_cmd($_, '', $options);
352    }    }
353  }  }
354    
# Line 78  sub bool2status { Line 363  sub bool2status {
363    return ($bool ? 'ok' : 'failed');    return ($bool ? 'ok' : 'failed');
364  }  }
365    
366    # create global unique identifers using Data::UUID
367    # if updating this code, please also modify Tangram::Storage::make_guid
368    sub make_guid
369      {
370        my $self = shift;
371    
372        my $guid;
373    
374        # try to use Data::UUID first ...
375        eval("use Data::UUID;");
376        if (!$@) {
377          my $ug = Data::UUID->new();
378          $guid = $ug->create_str();
379          
380        # ... if this fails, try to fallback to Data::UUID::PurePerl instead ...
381        } else {
382          eval("use Data::UUID::PurePerl;");
383          if (!$@) {
384            $guid = Data::UUID::PurePerl::generate_id();
385          } else {
386            croak "couldn't create globally unique identifier";
387          }
388        }
389        
390        return $guid;
391      }
392    
393    # [modified] from: http://www.mit.edu/afs/athena/contrib/watchmaker/src/pt/Configure
394    sub findpath {
395        #local($path);
396        #local($arg) = shift;
397        my $arg = shift;
398        my $path;
399        #for my $dir (split(/:/,$ENV{'PATH'})) {
400        for my $dir (File::Spec->path()) {
401            #if (-x "$dir/$arg" && -f _) {
402            #print STDOUT "scanning: ", "$dir/$arg", "\n";
403            if (-e "$dir/$arg") {
404                #$path = "$dir/$arg";
405                #$path = "$dir/";
406                $path = $dir;
407                last;
408            }
409        }
410        $path;
411    }
412    
413  1;  1;
414    __END__
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