mirror of
https://github.com/xcat2/xcat-core.git
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305 lines
7.9 KiB
Perl
Executable File
305 lines
7.9 KiB
Perl
Executable File
#!/usr/bin/env perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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use File::Basename;
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use Data::Dumper;
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use File::Path;
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use POSIX qw(WNOHANG setsid :errno_h);
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use Term::ANSIColor qw(:constants);
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$Term::ANSIColor::AUTORESET = 1;
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$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
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my $program_name = basename($0);
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my $pro_dir = "$::XCATROOT/probe/";
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my $plugin_dir = "$pro_dir/subcmds";
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my %cmds = ();
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my $verbose = 0;
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my $color = (-t *STDOUT);
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my $fullmsg = 0;
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my $help = 0;
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my $list = 0;
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$::USAGE = "Usage:
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xcatprobe -h
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xcatprobe -l
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xcatprobe [-V] <subcommand> <attrbute_to_subcommand>
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Options:
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-h : get usage information of $program_name
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-l : list all valid sub commands
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-V : print verbose information of $program_name
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-w : show each line completely. By default long lines are truncated.
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";
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#-----------------------------------
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=head3
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Description:
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Load sub commands from ~/subcmds directory
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Using -t option of command to judge if it is valid.
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If command in ~/subcmds has syntax error, or doesn't follow interface specification, this command will be skipped
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=cut
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#-----------------------------------
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sub loadsubcmds {
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my @candidate = glob("$plugin_dir/*");
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my @subcmds = ();
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my $output;
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print "Starting to load sub command form ~/subcmds.............\n" if ($verbose);
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foreach (@candidate) {
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my $cmdname = basename("$_");
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$output = `$_ -T 2>&1`;
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chomp($output);
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print "\n-->$_\n[OUTPUT]:\n$output\n" if ($verbose);
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if ($output !~ /\[(\w+)\]\s*:\s*(.+)/) {
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print "skip $_ for doing '$_ -T' failed, bad format\n" if ($verbose);
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next;
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} else {
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my $desc = $2;
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unless ($1 =~ /^ok$/) {
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print "skip $_ for doing '$_ -T' failed, invalid flag\n" if ($verbose);
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next;
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}
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$cmds{$cmdname} = $desc;
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print "load $_ \n" if ($verbose);
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}
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}
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print "\nLoad sub command.........[done]\n" if ($verbose);
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}
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#-----------------------------------
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=head3
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Description:
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Format the output of sub command, make them colorfully.
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=cut
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#----------------------------------
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sub format_cmd_output {
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my $line = shift;
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my $color = shift;
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my $fullmsg = shift;
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my $msg;
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my $flag;
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if ($line =~ /\[(\w+)\]\s*:(.+)/) {
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$flag = $1;
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$msg = $2;
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} else {
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$msg = $line;
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}
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$msg =~ s/\t/ /g;
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my $flaglen = 6;
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my $desiredwidth = 120;
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my $screenwidth = (`tput cols` + 0);
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my $maxlen = ($screenwidth > $desiredwidth ? $desiredwidth : $screenwidth);
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my @finalmsg = ();
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my $msglen = length($msg);
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if ($msglen <= $maxlen) {
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if (!$fullmsg && $flag) {
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my $leftspace = $maxlen - length($msg);
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if ($leftspace < $flaglen) {
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$msg = substr($msg, 0, $maxlen - $flaglen);
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$msg =~ s/(.*).../$1\.\.\./g;
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}
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}
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push @finalmsg, $msg;
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} else {
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my @tmpmsg = split("", $msg);
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my $head = 0;
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my $tail = $maxlen;
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while ($head < $msglen) {
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push @finalmsg, substr($msg, $head, ($tail - $head));
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if (!$fullmsg) {
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if ($flag) {
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$finalmsg[0] =~ s/(.*).........$/$1\.\.\./g;
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} else {
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$finalmsg[0] =~ s/(.*)...$/$1\.\.\./g;
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}
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last;
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}
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$head = $tail;
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$tail = $head + ($maxlen <= ($msglen - $tail) ? $maxlen : ($msglen - $tail));
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}
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}
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for (my $i = 0 ; $i < $#finalmsg + 1 ; ++$i) {
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if ($i ne $#finalmsg) {
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print "$finalmsg[$i]\n";
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next;
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}
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if ($flag) {
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my $leftspace = $maxlen - length($finalmsg[$i]);
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my $spacenum = (($leftspace >= $flaglen) ? ($leftspace - $flaglen) : ($screenwidth - length($finalmsg[$i]) + $maxlen - $flaglen));
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my $spacestr = " " x $spacenum;
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print "$finalmsg[$i]$spacestr";
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if ($flag =~ /failed/i) {
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if ($color) {
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print BOLD RED "[FAIL]\n";
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} else {
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print "[FAIL]\n";
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}
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} elsif ($flag =~ /warning/i) {
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if ($color) {
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print BOLD BLUE "[WARN]\n";
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} else {
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print "[WARN]\n";
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}
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} elsif ($flag =~ /ok/i) {
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if ($color) {
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print BOLD GREEN "[ OK ]\n";
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} else {
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print "[ OK ]\n";
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}
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} elsif ($flag =~ /debug/i) {
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print "\n";
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} elsif ($flag =~ /info/i) {
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print "[INFO]\n";
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}
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} else {
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print "$finalmsg[$i]\n";
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}
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}
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return 0;
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}
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#-----------------------------------
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=head3
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Description:
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List all valid sub command in ~/subcmds directory
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=cut
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#----------------------------------
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sub listvalidsubcmd {
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my $maxlen = 0;
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foreach my $key (keys %cmds) {
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$maxlen = length($key) if (length($key) > $maxlen);
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}
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$maxlen += 4;
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my $desiredwidth = 120;
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my $screenwidth = (`tput cols` + 0);
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my $finallen = ($screenwidth > $desiredwidth ? $desiredwidth : $screenwidth);
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print "Supported sub commands are:\n";
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foreach my $key (keys %cmds) {
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my @desc = split(" ", $cmds{$key});
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my $str = "";
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my @formatdesc = ();
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foreach my $word (@desc) {
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if (length($str) + length($word) > $finallen - $maxlen) {
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$str =~ s/([^\s]+)\s$/$1/g;
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push @formatdesc, $str;
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$str = "";
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}
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$str .= $word . " ";
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}
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$str =~ s/([^\s]+)\s$/$1/g;
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push @formatdesc, $str;
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if ($color) {
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print BOLD GREEN "$key";
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} else {
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print "$key";
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}
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my $space = " " x ($maxlen - length($key));
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print "$space$formatdesc[0]\n";
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delete $formatdesc[0];
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$space = " " x $maxlen;
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foreach my $line (@formatdesc) {
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print "$space$line\n" if (length($line));
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}
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}
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}
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#######################################
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# main
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#######################################
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my @tmpargv = @ARGV;
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my @supportopt = ("-V", "-h", "-l", "-w");
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my $pluginname;
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my $optnum = 0;
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foreach my $attr (@tmpargv) {
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if ($attr =~ /^-/) {
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unless (grep(/^$attr$/, @supportopt)) {
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print "Unsupported attribute: $attr\n";
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print $::USAGE;
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exit 1;
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}
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$optnum++;
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$help = 1 if ($attr eq "-h");
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$verbose = 1 if ($attr eq "-V");
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$list = 1 if ($attr eq "-l");
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$fullmsg = 1 if ($attr eq "-w");
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} else {
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$pluginname = $attr;
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last;
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}
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}
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&loadsubcmds;
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if (defined($pluginname)) {
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my $hit = 0;
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foreach my $key (keys %cmds) {
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$hit = 1 if ($pluginname eq $key);
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}
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unless ($hit) {
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print "Unsupported sub command: $pluginname\n";
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&listvalidsubcmd;
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exit 1;
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}
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}
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if ($help) {
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print $::USAGE;
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exit 0;
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}
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if ($ARGV[0] eq "-l") {
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&listvalidsubcmd;
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exit 0;
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}
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if (!defined($pluginname)) {
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print "There isn't sub command input from command line, use '-l' to list all valid subcommand\n";
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exit 0;
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}
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splice(@tmpargv, 0, $optnum + 1);
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my $pluginattrs = join(" ", @tmpargv);
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my $subcmd = "$plugin_dir/$pluginname $pluginattrs";
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print "\nsubcmd = $subcmd\n" if ($verbose);
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my $subcmdpid = 0;
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$SIG{TERM} = $SIG{INT} = sub {
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$subcmdpid or exit 0;
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kill 'INT', $subcmdpid;
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};
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$subcmdpid = open(PIPE, "$subcmd |") or die("Something went wrong while fork()ing to handle subcommand $subcmd: $!");
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while (<PIPE>) {
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chomp;
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format_cmd_output($_, $color, $fullmsg);
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}
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close(PIPE); # This will set the $? properly
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my $ret = $? >> 8;
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exit $ret;
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